CN109321132A

CN109321132A - Coating composition, coating piece and preparation method thereof, household electrical appliance

Info

Publication number: CN109321132A
Application number: CN201811172158.1A
Authority: CN
Inventors: 赵莉
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2018-10-08
Filing date: 2018-10-08
Publication date: 2019-02-12
Anticipated expiration: 2038-10-08
Also published as: WO2020073888A1; CN109321132B

Abstract

The present invention provides the household electrical appliance of a kind of coating composition, the coating piece as obtained by the coating composition, the preparation method and application of the coating piece coating piece.Contain polysilazane and fumed silica, the chemical structure of the polysilazane in the coating composition are as follows:Wherein, R₁、R₂And R₃At least one of three is low-surface-energy group, and the low-surface-energy group is hydrogen-based, siloxy, alkyl siloxy, fluoroalkyl or alkyl fluoride ether.Present invention coating piece as obtained by the coating composition has the advantages that hardness is high, adhesion is good, temperature tolerance is good, easy to clean and can reach food touch-safe rank.

Description

Coating composition, coating piece and preparation method thereof, household electrical appliance

Technical field

The present invention relates to field of home appliance technology more particularly to a kind of coating compositions, made by the coating composition Coating piece, the preparation method and application of the coating piece coating piece household electrical appliance.

Background technique

In micro- roasting field, it usually needs form coating in the surface of kitchen appliance class product, the material of above-mentioned coating is main are as follows: porcelain Glaze (enamel can be formed in product surface enamel technology), organosilicon, epoxy powder (can be used the ring by way of dusting Oxygen powder spray is in product surface) or silica solution+organic-silicon hybridization coating.However, above-mentioned coating has, hardness is low, adhesion The disadvantages of difference, temperature tolerance are poor, hardly possible cleans and there are food touch-safe hidden danger.

Summary of the invention

The main purpose of the present invention is to provide a kind of coating compositions, it is intended to make the painting as obtained by the coating composition Layer has the advantages that hardness height, adhesion is good, temperature tolerance is good, easy to clean and can reach food touch-safe rank.

In order to solve the above technical problems, contain polysilazane, fumed silica in coating composition provided by the invention, The chemical structure of the polysilazane are as follows:Wherein, R₁、R₂And R₃At least one of three is low-surface-energy Group, the low-surface-energy group are hydrogen-based, siloxy, alkyl siloxy, fluoroalkyl or alkyl fluoride ether.

Further, the R₁、R₂And R₃Any in three or any two be alkyl, aryl, olefine, alkoxy, Or naphthenic base.

Further, it is 10~80% that the polysilazane, which accounts for the mass percentage content of the coating composition, described The mass percentage content that fumed silica accounts for the coating composition is 2~40%.

Further, it is 10~60% that the polysilazane, which accounts for the mass percentage content of the coating composition, described The mass percentage content that fumed silica accounts for the coating composition is 2~30%.

Further, solvent is also contained in the coating composition, the solvent accounts for the quality hundred of the coating composition Dividing than content is 10~80%.

Further, the solvent is in alkane solvents, ether solvent, ketones solvent and benzenesulfonamide derivative species solvent At least one.

Further, the alkane solvents are selected from n-hexane, normal octane, n-decane, chloroform, methylene chloride, two At least one of vinyl chloride and mineral oil are a variety of；The ether solvent in ether, petroleum ether and butyl oxide extremely Few one kind；The ketones solvent is selected from least one of acetone, methyl ethyl ketone, cyclohexanone and isophorone；The benzene derivative Class solvent is selected from least one of toluene, meta-xylene, paraxylene, ortho-xylene and chlorobenzene.

The present invention also provides a kind of coating piece, the coating piece includes matrix and the face painting for being formed in described matrix surface Layer, the coating composition is contained in the finishing coat.

Further, the range of the thickness of the finishing coat is 0.01 micron~100 microns.

Further, the coating piece further includes the prime coat being formed between matrix and finishing coat, the prime coat Preparing raw material includes polysilazane and polysiloxanes, and the polysilazane and polysiloxanes, which are copolymerized, generates poly- silicon nitrogen Alkane-polysiloxane copolymer.

Further, it is 6~96% that the polysilazane, which accounts for the range of the mass percent for preparing raw material, described poly- The range that siloxanes accounts for the mass percent for preparing raw material is 4~94%.

Further, the range of the thickness of the prime coat is 0.01 micron~100 microns.

Further, the structural formula for preparing the polysilazane in raw material are as follows:Wherein, R₄For hydrogen-based, Alkane, cycloalkane, olefine, aryl, alkoxy, alkyl siloxy or alkylamino radical, R₅For hydrogen-based, alkane, cycloalkane, alkene Hydrocarbon, aryl, alkoxy, alkyl siloxy or alkylamino radical, R₆For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy, alkane Base siloxy or alkylamino radical.

Further, the R₄And R₅At least one of be hydrogen-based or olefine.

Further, the molecular weight for preparing the polysilazane in raw material is 100~1000.

Further, the structural formula of the polysiloxanes are as follows:Wherein, R₇For hydrogen-based, alkane, cycloalkane, Olefine, aryl, alkoxy or alkyl siloxy, R₈For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy or alkane Base siloxy.

Further, the molecular weight of the polysiloxanes is 100~1300.

Further, the raw material for preparing further includes solvent, and the solvent accounts for the mass percent for preparing raw material Range is 10~66%, and the solvent is in alkane solvents, ether solvent, ketones solvent and benzenesulfonamide derivative species solvent It is at least one.

Further, the raw material for preparing further includes catalyst, and the catalyst accounts for the quality percentage for preparing raw material The range of ratio is 0.01~5%, and the catalyst is amines catalyst and/or metal-based catalysts.

Further, the raw material for preparing further includes filler, and the filler accounts for the mass percent for preparing raw material Range be 1~50%, the filler be selected from silicon carbide, aluminium oxide, titanium oxide, zinc oxide, magnesia, aluminium hydroxide, white carbon black, At least one of concave convex rod, kaolin, bentonite, glass microsphere and ceramic microsphere.

Further, the raw material for preparing further includes filler and catalyst, and the filler accounts for the quality for preparing raw material The range of percentage is 1~50%, and the range that the catalyst accounts for the mass percent for preparing raw material is 10~66%, institute The range for stating the mass percent that polysiloxanes and polysilazane account for the coating composition is 0.01~5%.

The present invention also provides a kind of preparation methods of coating piece, comprising the following steps:

Matrix and the coating composition are provided；

By the coating composition in the surface of matrix, finishing coat is formed in the surface of matrix, the coating is made Part.

Further, the preparation method is further comprising the steps of:

There is provided prime coat prepares raw material, and the raw material for preparing includes: polysilazane and polysiloxanes；

Mixing polysilazane and polysiloxanes, polysilazane and polysiloxanes are copolymerized, and it is poly- to generate polysilazane- Paint base composition is made in silicone copolymers；

By the basecoat composition in the surface of matrix, prime coat is formed, coats institute then at the surface of the prime coat Coating composition is stated, forms the finishing coat in the surface of prime coat, the coating piece is made.

The present invention also provides a kind of household electrical appliance, the household electrical appliance include the coating piece.

Contain polysilazane and fumed silica, the gas phase dioxy in the coating composition of technical solution of the present invention SiClx is homogeneously dispersed in the polysilazane.R in the polysilazane₁、R₂And R₃At least one of three is low table Face energy group, the low-surface-energy group are hydrogen-based, siloxy, alkyl siloxy, fluoroalkyl or alkyl fluoride ether, the low surface Energy group can make the polysilazane have characteristic easy to clean, so that the finishing coat as obtained by the coating composition also has Advantage easy to clean.Moreover, the fumed silica can make the finishing coat as obtained by the coating composition have hardness it is high, The advantage that adhesion is good and temperature tolerance is good.Further, the polysilazane and fumed silica are not admitted to toxic have Evil substance, so that the finishing coat as obtained by the coating composition also can reach food touch-safe rank.

Specific embodiment

The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment Only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention In explaining relative positional relationship, motion conditions etc. between component each under a certain particular pose, if the particular pose occurs When change, then directionality instruction also correspondingly changes correspondingly.

In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result, Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model Within enclosing.

The present invention provides a kind of coating composition.

Contain polysilazane and fumed silica, the chemical structure of the polysilazane in the coating composition are as follows:Wherein, R₁、R₂And R₃At least one of three is low-surface-energy group, and the low-surface-energy group is hydrogen Base, siloxy, alkyl siloxy, fluoroalkyl or alkyl fluoride ether.

In one embodiment of the invention, R₁、R₂And R₃Three is low-surface-energy group.

In another embodiment of the present invention, R₁、R₂And R₃One in three is low-surface-energy group.

In further embodiment of this invention, R₁、R₂And R₃Two in three are low-surface-energy group.

In one embodiment of the invention, the R₁、R₂And R₃Any in three or any two be alkyl, aryl, olefine, Alkoxy or naphthenic base.

In an embodiment of the present invention, R₁For low-surface-energy group, R₂And R₃For alkyl, aryl, olefine, alkoxy or Naphthenic base.

In an alternative embodiment of the invention, R₁And R₃For low-surface-energy group, R₂For alkyl, aryl, olefine, alkoxy, Or naphthenic base.

In still another embodiment of the process, R₂For low-surface-energy group, R₁And R₃For alkyl, aryl, olefine, alkoxy, Or naphthenic base.

It should be understood that R can be arranged according to actual needs₁、R₂And R₃Type.

It should be noted that R₁、R₂And R₃Also the group of same or similar function can be realized for other, the present invention is to this With no restrictions.

The mass percentage content that the polysilazane accounts for the coating composition is 10~80%, the gas phase titanium dioxide The mass percentage content that silicon accounts for the coating composition is 2~40%.

Specifically, the polysilazane account for the coating composition mass percentage content be 10%, 20%, 30%, 40%, 50%, 60%, 70% or 80%.

Specifically, the fumed silica account for the coating composition mass percentage content can for 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 20%, 30% or 40%.

In an embodiment of the present invention, the polysilazane account for the coating composition mass percentage content be 10~ 60%, the mass percentage content that the fumed silica accounts for the coating composition is 2~30%.

In an embodiment of the present invention, it is 10 that the polysilazane, which accounts for the range of the mass percent of the coating composition, ~80%.Preferably, it is 20~70% that the polysilazane, which accounts for the range of the mass percent of the coating composition, more excellent It is selected as 30~50%, further preferably 40~45%.

In an embodiment of the present invention, the fumed silica accounts for the range of the mass percent of the coating composition It is 2~40%.Preferably, it is 5~30% that the fumed silica, which accounts for the range of the mass percent of the coating composition, More preferably 5~20%, further preferably 10~20%.

It should be understood that can polysilazane in adjusting coating composition, fumed silica and molten be come according to actual needs The content of agent.

The molecular formula of the fumed silica is SiO₂, it is white puff sprills, there is porous, non-toxic and tasteless nothing The characteristic of pollution etc., the hardness that can significantly improve finishing coat is high, adhesion is good and temperature tolerance is good.

The mass percentage content that the polysilazane of technical solution of the present invention accounts for the coating composition is 10~80%, gas The mass percentage content that aerosil accounts for the coating composition is 2~40%, the polysilazane of above-mentioned content, gas phase two After silica mixing, it can form that hardness is high, adhesion is good, temperature tolerance is good easy to clean and can reach food connects in the surface of matrix Touch the finishing coat of security level.

Also contain solvent in the coating composition, the mass percentage content that the solvent accounts for the coating composition is 10~80%.

Specifically, the solvent account for the coating composition mass percentage content be 10%, 20%, 30%, 40%, 50%, 60%, 70% or 80%.

In an embodiment of the present invention, the solvent account for the mass percent of the coating composition range be 10~ 80%.Preferably, it is 20~70%, more preferably 30 that the solvent, which accounts for the range of the mass percent of the coating composition, ~50%, further preferably 40~45%.

The solvent can be selected from least one in alkane solvents, ether solvent, ketones solvent and benzenesulfonamide derivative species solvent Kind.

The alkane solvents can be selected from n-hexane, normal octane, n-decane, chloroform, methylene chloride, dichloroethylene, And at least one of mineral oil.

The ether solvent can be selected from least one of ether, petroleum ether and butyl oxide.

The ketones solvent can be selected from least one of acetone, methyl ethyl ketone, cyclohexanone and isophorone.

The benzenesulfonamide derivative species solvent in toluene, meta-xylene, paraxylene, ortho-xylene and chlorobenzene at least It is a kind of.

It should be understood that can the content and type of solvent in adjusting coating composition be come according to actual needs.

It should be noted that the solvent can dissolve the reagent of polysilazane also for other, the present invention does not limit this System.

Contain solvent in the coating composition of technical solution of the present invention, polysilazane dissolves in solvent, so that the painting Feed composition can relatively easily be formed in the surface of matrix.

In an embodiment of the present invention, also contain colorant in the coating composition, which accounts for the coating composition Mass percent range be 0.01~5%, preferably 0.1~5%, more preferably 1~5%, further preferably 2~ 3%.

It should be understood that the vividness of colorant also can be improved in the fumed silica, so that finishing coat is presented preferably Appearance.

The colorant is selected from white pigment, yellow colorant, orange pigment, black pigment, purple, brown colorant, green At least one of color colorant, blue colorant, grey colorant and red colorant, so that by obtained by the coating composition Finishing coat has colorful appearance.

The white pigment is selected from stibium trioxide (Antimony white), barium sulfate (Barium sulfate), lithopone (Lithopone), at least one of titanium white (Titanium white) and zinc white (Zinc white).

The yellow colorant is nickel titanate antimony (Nickel titanate antimony) and/or titanium chromium palm fibre (Chrome titanium brown)。

The orange pigment is zinc-tin rutile (Rutile Tin Zinc).

The black pigment is black selected from copper-chrome black spinelle (Copper chromite black spinel), titanium (Titanium black), manganese dioxide (MnO₂), Ma Sihei (Mars black), ivory black (Ivory black) and carbon black At least one of (Carbon black).

The purple is cobalt phosphate (Cobalt Phosphate).

The brown colorant is titanium manganese brown (Manganese antimony titanate brown) and/or zinc-iron chromium palm fibre (Chromium iron zinc brown)。

The green pigment is cobalt green (Cobalt green), malachite (Malachite) and glauconite (Green At least one of earth).

The blue colorant is selected from celestine (Ultramarine), cobalt blue (Cobalt blue), Egyptian blue (Egyptian Blue), at least one of the Chinese blue (Han blue), chessy copper (Azurite), yttrium indium manganese blue (YInMn blue).

The grey colorant is copper-chrome black spinelle (Copper chromite black spinel), titanium is black (Titanium black), manganese dioxide (MnO₂), Ma Sihei (Mars black), violet black (Vine black), ivory black At least one of (Ivory black), carbon black (Carbon black) and stibium trioxide (Antimony white), barium sulfate (Barium Sulfate), lithopone (Lithopone), titanium white (Titanium white), in zinc white (Zinc white) Burnt ochre (Burnt sienna), Indian red (India can be also further added in the mixture at least one mixture Red), at least one of cobalt blue (Cobalt blue).

The red colorant is selected from burnt sienna (Burnt Sienna), burnt ochre (Red ochre) and Indian red (India At least one of Red).

It should be understood that colorant can be selected according to actual needs, so that finishing coat shows preferable appearance.

It should be understood that each component of coating composition of the invention, such as polysilazane, solvent, fumed silica, color Material is not admitted to poisonous and harmful substance, so that the finishing coat as made from the coating composition, which also has, can reach food touch-safe The advantages of rank.

The present invention also provides a kind of coating pieces comprising matrix and the finishing coat for being formed in described matrix surface, the face Contain the coating composition in coating.

It should be understood that the finishing coat can be formed by the coating composition in matrix surface.

It should be understood that the thermal weight loss in 500 DEG C of oxygen atmosphere of the finishing coat as obtained by the coating composition is small In 5%, show that the finishing coat has very excellent heat resistance.

Component, proportion of the coating composition etc. please refer to above-described embodiment, since this coating piece is using above-mentioned all Whole technical solutions of embodiment, therefore at least all beneficial effects brought by the technical solution with above-described embodiment, This is no longer repeated one by one.

The range of the thickness of the finishing coat is 0.01 micron~100 microns, preferably 1 micron~80 microns, more excellent It is selected as 2 microns~50 microns, further preferably 5 microns~20 microns.

The thickness of the finishing coat can for 0.01 micron, 1 micron, 2 microns, 5 microns, 10 microns, 20 microns, 50 microns or 100 microns.

It should be understood that the thickness of the finishing coat can be adjusted according to actual demand.

In technical solution of the present invention, the range of the thickness of the finishing coat can be 1~100 micron, in the surface shape of matrix After finishing coat at above-mentioned thickness, which can be effectively protected matrix so that the coating piece have it is easy to clean, reach The advantages that food touch-safe rank.

The coating piece further includes the prime coat being formed between matrix and finishing coat, and the prime coat prepares raw material packet Polysilazane and polysiloxanes are included, the polysilazane and polysiloxanes are copolymerized generation polysilazane-polysiloxanes Copolymer.

In an embodiment of the present invention, the polysilazane account for the mass percent for preparing raw material range be 6~ 96%, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 4~94%.

In an embodiment of the present invention, the polysilazane account for the mass percent for preparing raw material range be 6~ 96%.Preferably, it is 10~80% that the polysilazane, which accounts for the range of the mass percent for preparing raw material, more preferably 15~60%, further preferably 20~50%.

In an embodiment of the present invention, the polysiloxanes account for the mass percent for preparing raw material range be 4~ 94%.Preferably, it is 10~70% that the polysiloxanes, which accounts for the range of the mass percent for preparing raw material, more preferably 15~60%, further preferably 20~50%.

The raw material for preparing of the prime coat of technical solution of the present invention includes polysilazane and polysiloxanes.The polysilazane and poly- Siloxanes can be copolymerized and generate polysilazane-polysiloxane copolymer.The polysilazane-polysiloxane copolymer tool Have the advantages that hardness is high, adhesion is good and temperature tolerance is good, and the polysilazane-polysiloxane copolymer be not belonging to it is poisonous and harmful Substance so that the coating piece with the prime coat have that hardness is high, adhesion is good, temperature tolerance is good and food touch-safe it is excellent Point.

The range of the thickness of the prime coat is 0.01 micron~100 microns, preferably 1 micron~80 microns, more excellent It is selected as 2 microns~50 microns, further preferably 5 microns~20 microns.

The thickness of the prime coat can for 0.01 micron, 1 micron, 2 microns, 5 microns, 10 microns, 20 microns, 50 microns or 100 microns.

It should be understood that the thickness of the prime coat can be adjusted according to actual demand.

In technical solution of the present invention, the range of the thickness of the prime coat can be 1~100 micron, in the surface shape of matrix After prime coat at above-mentioned thickness, which can be effectively protected matrix, and improve between finishing coat and matrix Bonding strength also may make the coating piece to have the advantages that hardness is high, adhesion is good, temperature tolerance is good and food touch-safe.

The structural formula for preparing the polysilazane in raw material are as follows:Wherein, R₄For hydrogen-based, alkane, cycloalkanes Hydrocarbon, olefine, aryl, alkoxy, alkyl siloxy or alkylamino radical, R₅For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkane Oxygroup, alkyl siloxy or alkylamino radical, R₆For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy, alkyl siloxy, Or alkylamino radical.

The structural formula of the polysiloxanes are as follows:Wherein, R₇For hydrogen-based, alkane, cycloalkane, olefine, virtue Base, alkoxy or alkyl siloxy, R₈For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy or alkyl siloxy.

In an embodiment of the present invention, R₄And R₅At least one of the two is hydrogen-based or olefine.

It should be understood that the polysilazane prepared in raw material and polysiloxanes are heat-resisting material.

It should be understood that R₄、R₅And R₆It can be adjusted according to actual needs for identical group or in different groups Section.

It should be understood that R₇And R₈It can be adjusted according to actual needs for identical group or in different groups.

It should be noted that R₄、R₅And R₆The group of same or similar function, the present invention couple can also can be realized for other This is with no restrictions；R₇And R₈The group of same or similar function can also can be realized for other, the present invention is without limitation.

In technical solution of the present invention, the polysilazane can be copolymerized with the polysiloxanes, generate priming paint group The matrix resin of object is closed, hardness is high so that the prime coat as obtained by the paint base composition has, adhesion is good, temperature tolerance It is good and the advantages of reach food touch-safe rank.

The molecular weight for preparing the polysilazane in raw material is 100~1000, and the molecular weight of the polysiloxanes is 100 ~1300.

In one embodiment of the invention, the molecular weight of the polysilazane is 100,200,300,400,500,600,700, 800,900 or 1000.

In one embodiment of the invention, the molecular weight of the polysilazane is preferably 100~700, more preferably 100~ 300。

In one embodiment of the invention, the molecular weight of the polysiloxanes is 100,200,300,400,500,600,700, 800,900,1000,1100,1200 or 1300.

In one embodiment of the invention, the molecular weight of the polysiloxanes is preferably 200~900, more preferably 200~ 500。

The molecular weight for preparing the polysilazane in raw material of technical solution of the present invention is 100~1000, point of polysiloxanes Son amount is 100~1300, and the polysiloxanes that the polysilazane and molecular weight that molecular weight is 100~1000 are 100~1300 occurs After copolyreaction, polysilazane-polysiloxane copolymer is produced, polysilazane-polysiloxane copolymer bottom will be contained After coating compositions are formed in matrix formation prime coat, which has preferable hardness, adhesion and temperature tolerance.

The raw material for preparing further includes solvent, the solvent account for the mass percent for preparing raw material range be 10~ 66%, preferably 15~50%, more preferably 20~40%, further preferably 30~35%.

The solvent in alkane solvents, ether solvent, ketones solvent and benzenesulfonamide derivative species solvent at least one Kind.

It should be noted that other solvents that can dissolve polysiloxanes and polysilazane copolymers also can be used as it is of the invention Solvent, the present invention are without limitation.

Polysilazane-the polysiloxane copolymer dissolves in solvent, so that polysilazane-polysiloxane copolymer can Relatively easily it is formed in the surface of matrix.

The raw material for preparing further includes catalyst, and the range that the catalyst accounts for the mass percent for preparing raw material is 0.01~5%, preferably 0.1~5%, more preferably 1~5%, further preferably 2~3%.

The catalyst is amines catalyst and/or metal-based catalysts.

The amines catalyst can be selected from one of fatty amine, cycloaliphatic amines, hydramine and aromatic amine or a variety of.

The fatty amine can be selected from least one of diethylamine, triethylamine and triethylene tetramine.

The cycloaliphatic amines can be selected from least one of triethylenediamine, piperazine, piperidines and morpholine.

The hydramine can be selected from N, N- dimethylethanolamine, diisopropanolamine (DIPA) and N, in N- diethyl ethylene diamine at least It is a kind of.

The aromatic amine is selected from least one of aniline, o-phenylenediamine, benzidine and n,N-Dimethylaniline.

The metal-based catalysts can be organotin catalysts and/or palladium class catalyst.

The organotin catalysts can be selected from dibutyltindilaurylmercaptide cinnamic acid rouge, stannous octoate, stannous methide and triphenyltin At least one of.

The palladium class catalyst can be selected from carbon/palladium, palladium chloride, propionic acid palladium salt, acetic acid palladium salt and triphenyl phosphorus palladium extremely Few one kind.

It should be noted that catalyst of the invention can be also other catalyst with similar performance, the present invention is to this With no restrictions.

The catalyst can accelerate the copolyreaction between polysilazane and polysiloxanes, to generate institute in a short time State polysilazane-polysiloxane copolymer.

The raw material for preparing further includes filler, the filler account for the mass percent for preparing raw material range be 1~ 50%, preferably 5~40%, preferably 10~30%, more preferably 15~25%.

The filler is selected from silicon carbide, aluminium oxide, titanium oxide, zinc oxide, magnesia, aluminium hydroxide, white carbon black (titanium dioxide Silica aerogel), concave convex rod, kaolin, bentonite, at least one of glass microsphere and ceramic microsphere.

The partial size of the filler may be less than 3 microns, it is preferable that less than 2 microns, more preferably 1 micron.

In an embodiment of the present invention, the range of the partial size of the filler is 0.2~0.8 micron.It should be understood that described The partial size of filler is 0.2 micron, 0.3 micron, 0.4 micron, 0.5 micron, 0.6 micron, 0.7 micron or 0.8 micron.

It should be understood that filler can relatively evenly divide when setting 0.2~0.8 micron for the particle size range of the filler It dissipates in preparing in raw material, and makes the surface of prime coat obtained more smooth.

In an alternative embodiment of the invention, the range of the partial size of the filler is 0.2~0.5 micron, more flat to obtain Whole prime coat.

In an embodiment of the present invention, grinder can be used to grind filler, to reduce the partial size of filler, then will be through Filler after milled processed is added in polysilazane-polysiloxane copolymer.

In an alternative embodiment of the invention, after filler being added to polysilazane-polysiloxane copolymer, prime coat is obtained Head product, which can be ground, to reduce the partial size of filler in paint base composition.

In an embodiment of the present invention, it is scattered in prime coat to the uniform filling.

In technical solution of the present invention, the filler is selected from silicon carbide, aluminium oxide, titanium oxide, zinc oxide, magnesia, hydrogen-oxygen Change in aluminium, white carbon black (aerosil), concave convex rod, kaolin, bentonite, glass microsphere and ceramic microsphere at least One kind, to improve hardness, adhesion and temperature tolerance by prime coat.

It should be noted that other fillers with high temperature resistance also can be used as filler of the invention, the present invention is to this With no restrictions.

It should be understood that polysilazane, polysiloxanes, solvent, catalyst and filler in paint base composition of the invention It is not admitted to poisonous and harmful substance, so that preparing prime coat obtained by raw material as this has the advantages that food touch-safe.

In an embodiment of the present invention, the prime coat prepare raw material include: polysiloxanes, it is polysilazane, filler, molten Agent and catalyst.Wherein, the polysiloxanes and polysilazane account for the mass percent range for preparing raw material be 10%~ 80%, it is 1~50% that filler, which accounts for the mass percent range for preparing raw material, and solvent accounts for the quality percentage for preparing raw material It is 10~66% than range, it is 0.01~5% that catalyst, which accounts for the mass percent range for preparing raw material,.

Matrix, polysilazane, solvent and fumed silica are provided；

Solvent is added into the polysilazane, is stirred with 100~700 revs/min of speed, preferably with 200 ~400 revs/min of speed is stirred, and adds fumed silica, is stirred with 100~2000 revs/min of speed It mixes, is preferably stirred with 1000~1500 revs/min of speed, so that polysilazane, solvent and fumed silica are mixed It closes uniformly, obtains coating composition.

It should be understood that also colorant can be added into the polysilazane, so that finishing coat when fumed silica is added Show preferable appearance.

It should be understood that heating when the coating composition is formed in the surface of matrix to matrix, should add The temperature of heat treatment is lower than 300 DEG C, preferably 100 DEG C~280 DEG C, more preferably 120~150 DEG C, so that matrix surface Curing of coating composition forms finishing coat.The range of the thickness of the finishing coat can be 1~100 micron.

In an embodiment of the present invention, pre-treatment can be carried out to matrix, the pre-treatment can be oil removing, cleaning and drying Deng improving finishing coat in the adhesive force of matrix surface so that matrix surface is clean.

In the inventive solutions, can directly consolidate in the surface of matrix to coating composition coating composition It can be prepared by the coating piece after change, so that the preparation method of coating piece of the invention has the advantages that moulding process is simple.And And the temperature of the curing process is lower than 300 DEG C, the cured technical solution of high temperature compared to the prior art, coating piece of the invention Preparation method also have the advantages that energy consumption it is low.

It should be understood that not needed before carrying out sanding etc. to matrix since the finishing coat has preferable adhesion Reason, reduce the technology difficulty of the preparation method of the coating piece, and compared to the prior art in need to matrix carry out sanding The technical solution of processing, the preparation method of coating piece of the invention also have the advantages that environmental protection.

The preparation method is further comprising the steps of:

The basecoat composition in the surface of matrix, is formed prime coat by matrix, described in prime coat coating Coating composition forms the finishing coat in the surface of prime coat, the coating piece is made.

It should be understood that can be first ground to the coating composition, then by ground treated Coating material composition Object is coated on the surface of matrix.

In an embodiment of the present invention, polysiloxanes and polysilazane can be placed in reactor, to polysiloxanes and poly- silicon Azane carries out first time stir process so that polysiloxanes is uniformly mixed with polysilazane, and polysiloxanes can occur with polysilazane Copolyreaction generates polysiloxanes-polysilazane copolymers.

In the present invention one is implemented, the stirring rate of the first time stir process is 100~800 revs/min, preferably 200~600 revs/min, more preferably 400~500 revs/min.

It should be understood that the time of the copolyreaction can be 10 seconds~50 minutes, can need to adjust according to actual production The time of whole copolyreaction.

It should be noted that the stirring rate of the first time stir process and the time of copolyreaction can be also other numbers Value, the present invention are without limitation.

It should be understood that matrix can be coated in by modes such as spraying, spin coating, showering, dip-coatings for the paint base composition After upper, curing process is carried out to paint base composition, to form prime coat, which can be to be heating and curing or UV solidification.

After mixing polysilazane and polysiloxanes, the preparation method of the paint base composition further include: to polysilazane and The step of catalyst is added in polysiloxanes, wherein the range that the catalyst accounts for the mass percent for preparing raw material is 0.01~5%, preferably 0.1~5%, more preferably 1~5%, further preferably 2~3%.

The catalyst is amines catalyst and/or metal-based catalysts.

It should be understood that second of stir process is carried out to it after catalyst is added into polysilazane and polysiloxanes, So that polysilazane, polysiloxanes and catalyst are uniformly mixed.

In an embodiment of the present invention, the stirring rate of second of stir process can be 1000~2000 revs/min, excellent It is selected as 1200~1800 revs/min, more preferably 1500~1600 revs/min.

In an embodiment of the present invention, the time of second of stir process can be 10 seconds~50 minutes, preferably 5~ 15 minutes, more preferably 8~12 minutes.

It should be noted that the time of the stirring rate of second of stir process and second of stir process can also be Other numerical value, the present invention are without limitation.

It should be noted that other catalyst with similar performance also can be used as catalyst of the invention, the present invention couple This is with no restrictions.

In the technical solution of the present invention, catalyst can be added into polysilazane and polysiloxanes, to promote polysiloxanes It is copolymerized with polysilazane, generates the matrix resin of paint base composition of the invention, i.e., polysiloxanes-polysilazane is total Polymers.

It, can also be poly- to polysilazane-before obtaining the paint base composition after generating polysilazane-polysiloxane copolymer Filler and/or solvent are added in silicone copolymers.

The range that the solvent accounts for the mass percent for preparing raw material is 10~66%, preferably 15~50%, more Add preferably 20~40%, further preferably 30~35%.

The range that the filler accounts for the mass percent for preparing raw material is 1~50%, preferably 5~40%, preferably It is 10~30%, more preferably 15~25%.

The filler can be selected from silicon carbide, aluminium oxide, titanium oxide, zinc oxide, magnesia, aluminium hydroxide, white carbon black, bumps At least one of stick, kaolin, bentonite, glass microsphere and ceramic microsphere.

It in an embodiment of the present invention, can be to it after solvent and filler being added into polysilazane-polysiloxane copolymer Third time stir process is carried out, so that polysilazane-polysiloxane copolymer, solvent and filler are uniformly mixed.

It should be understood that solvent first can be added into the polysilazane-polysiloxane copolymer, filler is added, it is right It carries out third time stir process.Solvent and filler can also be added into the polysilazane-polysiloxane copolymer simultaneously, it is right It carries out third time stir process.Solvent/filler is either only added into the polysilazane-polysiloxane copolymer, it is right It carries out third time stir process.

The stirring rate of the third time stir process can be 100~3000 revs/min, preferably 500~2000 revs/min Clock, more preferably 1000~1500 revs/min.

In an embodiment of the present invention, the time of the third time stir process can be 2~20 minutes, preferably 5~15 Minute, more preferably 8~12 minutes.

It should be noted that the stirring rate of the third time stir process and the time of third time stir process can also be Other numerical value, the present invention are without limitation.

It should be understood that filler can be uniformly dispersed when setting 0.2~0.8 micron for the particle size range of the filler In polysilazane-polysiloxane copolymer, and make primer coat surface obtained more smooth.

In an alternative embodiment of the invention, the unit of the partial size of the filler is 0.2~0.5 micron, more flat to obtain Whole prime coat.

In an embodiment of the present invention, grinder can be used to grind filler, to reduce the partial size of filler, then will be through Filler after milled processed is added into polysilazane-polysiloxane copolymer.

In an alternative embodiment of the invention, directly the biggish filler of partial size can be added total to polysilazane-polysiloxanes In polymers, the head product of prime coat is obtained, then be ground to the head product of the prime coat, to reduce in the head product The partial size of filler.

The time of the milled processed can be 30~60 minutes, preferably 40~50 minutes.It can adjust according to actual needs Whole milling time, to obtain the filler of corresponding partial size.

It should also be noted that, the order of addition and lapping mode of each component can roots in the preparation method of the prime coat It is adjusted according to actual demand, and above-mentioned mixing speed, mixing time, milling time etc. are the typical case in preparation process Value, can be adjusted according to actual needs.

The household electrical appliance can for micro-wave oven, electromagnetic oven, oven, bread producing machine, flour stranding machine, smoke exhaust ventilator, air burst pot, Cake shelves, humidifier, insulating pot, hair dryer, juice extractor, pressure cooker, electric cooker, water heater, computer, electric fan, electricity pan-fried disk, soya-bean milk Machine, air-conditioning, speaker, cooking stove or refrigerator etc..

In an embodiment of the present invention, the coating piece can be the shell of household electrical appliance.Specifically, which can be family The shell or inner casing of electrical appliance.

In a specific embodiment of the invention, when the household electrical appliance are that micro-wave oven, air burst pot or oven etc. add When thermoelectricity device, the coating piece can be inner cavity or the heating dish of micro-wave oven or oven.

The specific structure of the coating piece please refers to above-described embodiment, since this household electrical appliance uses above-mentioned all embodiments Whole technical solutions, therefore at least with above-described embodiment technical solution brought by all beneficial effects, herein no longer It repeats one by one.

It should be understood that the raw material for preparing of the top coat layer and prime coat is not domestic and international regulation limitation or is forbidden to use Substance, and harmful substance will not be generated in the preparation process of the coating piece, so that the top coat layer, prime coat, painting Cover part and the advantages of electronic device all has safety and environmental protection.

The following are several embodiments of the preparation method of coating piece of the present invention:

Embodiment 1

The preparation method of the coating piece the following steps are included:

Matrix is provided；

Polysilazane and fumed silica, the R of the polysilazane are provided₁For hydrogen-based, R₂For fluoroalkyl, R₃For aryl, Wherein, it is 70% which, which accounts for the mass percentage content of the coating composition, which accounts for the painting The mass percentage content of feed composition is 30%；

Polysilazane, paraxylene and fumed silica are mixed, is stirred, is applied with 300 revs/min of speed Feed composition；

By the coating composition in the surface of matrix, the finishing coat with a thickness of 40 microns, system are formed in matrix surface Obtain the coating piece.

Embodiment 2

The preparation method of the coating piece the following steps are included:

Matrix is provided；

Polysilazane, paraxylene, fumed silica and titanium white, the R of the polysilazane are provided₁For hydrogen-based, R₂For fluothane Base, R₃For aryl, polysilazane, paraxylene, fumed silica and titanium white are mixed, is stirred with 400 revs/min of speed It mixes, obtains coating composition, wherein the mass percentage content that the polysilazane accounts for the coating composition is 40%, this is right The mass percentage content that dimethylbenzene accounts for the coating composition is 40%, which accounts for the coating composition Mass percentage content is 15%, and the mass percentage content which accounts for the coating composition is 5%；

Embodiment 3

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane and polysiloxanes that this, which prepares raw material, wherein the poly- silicon The R of azane₄For hydrogen-based, R₅For hydrogen-based, R₆For hydrogen-based, the polysilazane accounts for the range of the mass percent for preparing raw material It is 60%, the R of the polysiloxanes₇For hydrogen-based, R₈For olefine, the polysiloxanes accounts for the quality percentage for preparing raw material The range of ratio is 40%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 600 revs/min of speed Alkane, polysiloxanes are copolymerized with polysilazane, generate polysiloxanes-polysilazane copolymers, obtain paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 70 microns is formed；

Polysilazane, paraxylene and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride ether, R₂For Alkyl, R₃For hydrogen-based；

Polysilazane and paraxylene are mixed, is stirred with 100 revs/min of speed, so that polysilazane is dissolved in diformazan Benzene obtains solution, then fumed silica is added into the solution, is stirred with 1000 revs/min of speed, until obtaining transparent Coating composition, wherein polysilazane account for coating composition mass percentage content be 80%, paraxylene accounts for coating group The mass percentage content for closing object is 18%, and the mass percentage content that fumed silica accounts for coating composition is 2%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 20 microns is formed, the painting is obtained Cover part.

Embodiment 4

The preparation method of the coating piece the following steps are included:

Matrix is provided；

Prime coat is provided and prepares raw material, this prepare raw material include: polysilazane, polysiloxanes, butyl oxide, cyclohexanone, The aluminium oxide and dibutyltindilaurylmercaptide cinnamic acid rouge that particle size range is 0.2~0.4 micron, wherein the R of the polysilazane₄For virtue Base, R₅For hydrogen-based, R₆For alkylamino radical, the range that the polysilazane accounts for the mass percent for preparing raw material is 40%, described The R of polysiloxanes₇For cycloalkane, R₈For alkyl siloxy, the polysiloxanes accounts for the model of the mass percent for preparing raw material Enclosing is 25%, and the range that the butyl oxide accounts for the mass percent for preparing raw material is 20%, and the cyclohexanone accounts for the system The range of the mass percent of standby raw material is 4%, and the range that the aluminium oxide accounts for the mass percent for preparing raw material is 8%, the range that the dibutyltindilaurylmercaptide cinnamic acid rouge accounts for the mass percent for preparing raw material is 3%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 200 revs/min of speed Alkane adds dibutyltindilaurylmercaptide cinnamic acid rouge, so that polysiloxanes is copolymerized with polysilazane, generates polysiloxanes- After butyl oxide and cyclohexanone are added in the copolymer, then into the copolymer aluminium oxide is added in polysilazane copolymers, with 1200 revs/min of speed is stirred, and obtains paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 25 microns is formed；

There is provided polysilazane, to butyl oxide and fumed silica, wherein the R of the polysilazane₁For fluoroalkyl, R₂For virtue Base, R₃For hydrogen-based；

It mixes polysilazane and to butyl oxide, is stirred with 100 revs/min of speed, so that polysilazane is dissolved in two fourths Ether obtains solution, then fumed silica is added into the solution, is stirred with 1200 revs/min of speed, until obtaining transparent Coating composition, wherein polysilazane account for coating composition mass percentage content be 80%, coating group is accounted for butyl oxide The mass percentage content for closing object is 18%, and the mass percentage content that fumed silica accounts for coating composition is 2%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 30 microns is formed, the painting is obtained Cover part.

Embodiment 5

The preparation method of the coating piece the following steps are included:

Matrix is provided；

Prime coat is provided and prepares raw material, this prepare raw material include: polysilazane, polysiloxanes, toluene, isophorone, The silicon carbide that the aluminium oxide and particle size range that particle size range is 2~4 microns are 1~3 micron, wherein the R of the polysilazane₄ For olefine, R₅For alkylsiloxane, R₆For alkane, the polysilazane accounts for the range of the mass percent for preparing raw material It is 20%, the R of the polysiloxanes₇For alkane, R₈For olefine, the polysiloxanes accounts for the quality percentage for preparing raw material The range of ratio is 20%, and the range that the toluene accounts for the mass percent for preparing raw material is 18%, and the isophorone accounts for The range of the mass percent for preparing raw material is 20%, and the aluminium oxide accounts for the model of the mass percent for preparing raw material Enclosing is 12%, and the range that the silicon carbide accounts for the mass percent for preparing raw material is 10%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 200 revs/min of speed Alkane, polysiloxanes are copolymerized with polysilazane, polysiloxanes-polysilazane copolymers are generated, by toluene and different Fo Er After ketone is added in the copolymer, then aluminium oxide and silicon carbide are added into the copolymer, are carried out with 1200 revs/min of speed Stirring obtains head product, is ground to head product, so that the range of the partial size of aluminium oxide and silicon carbide is 0.2~0.3 Micron obtains paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 55 microns is formed；

Polysilazane, toluene and fumed silica are provided, wherein the R of the polysilazane₁For siloxy, R₂For olefine, R₃For hydrogen-based；

Polysilazane and toluene are mixed, is stirred with 600 revs/min of speed, so that polysilazane is dissolved in toluene, is obtained molten Liquid, then fumed silica is added into the solution, it is stirred with 1200 revs/min of speed, until obtaining transparent coating group Close object, wherein the mass percentage content that polysilazane accounts for coating composition is 70%, and toluene accounts for the quality hundred of coating composition Dividing than content is 18%, and the mass percentage content that fumed silica accounts for coating composition is 12%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 60 microns is formed, the painting is obtained Cover part.

Embodiment 6

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, ortho-xylene, petroleum that this, which prepares raw material, Aluminium oxide, the white carbon black that particle size range is 0.2~0.4 micron and the acetic acid palladium salt that ether, particle size range are 0.2~0.4 micron, Wherein, the R of the polysilazane₄For hydrogen-based, R₅For cycloalkane, R₆For hydrogen-based, the polysilazane accounts for the matter for preparing raw material The range for measuring percentage is 15%, the R of the polysiloxanes₇For alkylamino radical, R₈For alkoxy, the polysiloxanes accounts for the system The range of the mass percent of standby raw material is 15%, and the range that the ortho-xylene accounts for the mass percent for preparing raw material is 20%, the range that the petroleum ether accounts for the mass percent for preparing raw material is 20%, and it is former that the aluminium oxide accounts for the preparation The range of the mass percent of material is 11%, and the range that the white carbon black accounts for the mass percent for preparing raw material is 15%, The range that the acetic acid palladium salt accounts for the mass percent for preparing raw material is 4%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 220 revs/min of speed Alkane adds acetic acid palladium salt, so that polysiloxanes is copolymerized with polysilazane, it is total to generate polysiloxanes-polysilazane Polymers after ortho-xylene and petroleum ether are added in the copolymer, then aluminium oxide and white carbon black is added into the copolymer, with 1500 revs/min of speed is stirred, and obtains paint base composition；

Polysilazane, petroleum ether and fumed silica are provided, wherein the R of the polysilazane₁For hydrogen-based, R₂For hydrogen-based, R₃ For hydrogen-based；

Polysilazane and petroleum ether are mixed, is stirred with 450 revs/min of speed, so that polysilazane is dissolved in petroleum ether, is obtained Solution is obtained, then fumed silica is added into the solution, is stirred with 1600 revs/min of speed, until obtaining transparent painting Feed composition, wherein the mass percentage content that polysilazane accounts for coating composition is 80%, and petroleum ether accounts for coating composition Mass percentage content is 18%, and the mass percentage content that fumed silica accounts for coating composition is 2%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 80 microns is formed, the painting is obtained Cover part.

Embodiment 7

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, n-hexane, acetone, grain that this, which prepares raw material, Concave convex rod that diameter range is 1~3 micron, the white carbon black that particle size range is 1~3 micron, the oxidation that particle size range is 1~2 micron Magnesium and triethylene tetramine, wherein the R of the polysilazane₄For alkylamino radical, R₅For alkyl, R₆For aryl, the polysilazane is accounted for The range of the mass percent for preparing raw material is 12%, the R of the polysiloxanes₇For alkylsiloxane, R₈For cycloalkane, The range that the polysiloxanes accounts for the mass percent for preparing raw material is 11%, and the n-hexane accounts for the raw material for preparing The range of mass percent is 27%, and the range that the acetone accounts for the mass percent for preparing raw material is 27%, described recessed The range that convex stick accounts for the mass percent for preparing raw material is 4%, and the white carbon black accounts for the quality percentage for preparing raw material The range of ratio is 4%, and the range that the magnesia accounts for the mass percent for preparing raw material is 14%, the triethylene tetramine The range for accounting for the mass percent for preparing raw material is 1%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 320 revs/min of speed Alkane adds triethylene tetramine, so that polysiloxanes is copolymerized with polysilazane, generates polysiloxanes-polysilazane Copolymer after n-hexane and acetone are added in the copolymer, then concave convex rod, magnesia and hard charcoal is added into the copolymer It is black, it is stirred with 1700 revs/min of speed, obtains head product, head product is ground, so that concave convex rod, oxygen The range for changing the partial size of magnesium and white carbon black is 0.2~0.3 micron, obtains paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 15 microns is formed；

Polysilazane, n-hexane and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride ether, R₂For alkane Base, R₃For hydrogen-based；

Polysilazane and petroleum ether are mixed, is stirred with 450 revs/min of speed, so that polysilazane is dissolved in n-hexane, is obtained Solution is obtained, then fumed silica is added into the solution, ultrasonic disperse, until obtaining transparent coating composition, wherein poly- The mass percentage content that silazane accounts for coating composition is 70%, and the mass percentage content that n-hexane accounts for coating composition is 22%, the mass percentage content that fumed silica accounts for coating composition is 8%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 10 microns is formed, the painting is obtained Cover part.

Embodiment 8

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, methyl ethyl ketone, diformazan that this, which prepares raw material, Aluminium oxide that benzene, particle size range are 1.3~3 microns, the titanium oxide that particle size range is 1.5~3 microns, particle size range are 1.2~2 The bentonite and triphenyltin of micron, wherein the R of the polysilazane₄For aryl, R₅For aryl, R₆For hydrogen-based, the poly- silicon The range that azane accounts for the mass percent for preparing raw material is 10%, the R of the polysiloxanes₇For olefine, R₈For hydrogen-based, The range that the polysiloxanes accounts for the mass percent for preparing raw material is 10%, and the methyl ethyl ketone accounts for the raw material for preparing The range of mass percent is 20%, and the range that the meta-xylene accounts for the mass percent for preparing raw material is 23%, institute Stating aluminium oxide and accounting for the range of the mass percent for preparing raw material is 30%, and the titanium oxide accounts for the quality for preparing raw material The range of percentage is 3%, and the range that the bentonite accounts for the mass percent for preparing raw material is 3%, the triphenyl The range that tin accounts for the mass percent for preparing raw material is 1%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 280 revs/min of speed Alkane adds triphenyltin, so that polysiloxanes is copolymerized with polysilazane, it is total to generate polysiloxanes-polysilazane Polymers after methyl ethyl ketone and meta-xylene are added in the copolymer, then aluminium oxide, titanium oxide and swollen is added into the copolymer Profit soil, is stirred with 1300 revs/min of speed, is obtained head product, is ground to head product, so that aluminium oxide, The range of titanium oxide and bentonitic partial size is 0.2~0.3 micron, obtains paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 75 microns is formed；

Polysilazane, methyl ethyl ketone and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride ether, R₂For alkane Base, R₃For hydrogen-based；

Polysilazane and petroleum ether are mixed, is stirred with 450 revs/min of speed, so that polysilazane is dissolved in methyl ethyl ketone, is obtained Solution is obtained, then fumed silica is added into the solution, ultrasonic disperse, until obtaining transparent coating composition, wherein poly- The mass percentage content that silazane accounts for coating composition is 60%, and the mass percentage content that methyl ethyl ketone accounts for coating composition is 25%, the mass percentage content that fumed silica accounts for coating composition is 15%；

Embodiment 9

The preparation method of the coating piece the following steps are included:

Matrix is provided；

Prime coat is provided and prepares raw material, this prepare raw material include: polysilazane, polysiloxanes, ether, paraxylene, White carbon black that particle size range is 1.3~3 microns, the aluminium hydroxide that particle size range is 1.5~3 microns, particle size range be 0.1~ 0.3 micron of glass microsphere and n,N-Dimethylaniline, wherein the R of the polysilazane₄For olefine, R₅For aryl, R₆For Hydrogen-based, the range that the polysilazane accounts for the mass percent for preparing raw material is 6%, the R of the polysiloxanes₇For alkane Hydrocarbon, R₈For alkane, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 4%, and the ether accounts for described The range for preparing the mass percent of raw material is 35.5%, and the paraxylene accounts for the model of the mass percent for preparing raw material Enclosing is 30%, and the range that the white carbon black accounts for the mass percent for preparing raw material is 10%, and the aluminium hydroxide accounts for described The range for preparing the mass percent of raw material is 12%, and the glass microsphere accounts for the range of the mass percent for preparing raw material It is 2%, the range that the n,N-Dimethylaniline accounts for the mass percent for preparing raw material is 0.5%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 480 revs/min of speed Alkane adds n,N-Dimethylaniline, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon of polysiloxanes- Azane copolymer after ether and paraxylene are added in the copolymer, then white carbon black and hydrogen-oxygen is added into the copolymer Change aluminium, be stirred with 1300 revs/min of speed, obtain head product, head product is ground so that white carbon black and The range of the partial size of aluminium hydroxide is 0.2~0.3 micron, adds glass microsphere, obtains paint base composition；

Polysilazane, ether and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride ether, R₂For alkyl, R₃For hydrogen-based；

Polysilazane and ether are mixed, is stirred with 450 revs/min of speed, so that polysilazane is dissolved in ether, is obtained molten Liquid, then fumed silica is added into the solution, ultrasonic disperse, until obtaining transparent coating composition, wherein poly- silicon nitrogen The mass percentage content that alkane accounts for coating composition is 40%, and the mass percentage content that ether accounts for coating composition is 30%, The mass percentage content that fumed silica accounts for coating composition is 30%；

Embodiment 10

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, butyl oxide and Sanya second that this, which prepares raw material, Base diamines, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆For hydrogen-based, it is former that the polysilazane accounts for the preparation The range of the mass percent of material is 30%, the R of the polysiloxanes₇For hydrogen-based, R₈For olefine, the polysiloxanes accounts for institute The range for stating the mass percent for preparing raw material is 50%, and the butyl oxide accounts for the range of the mass percent for preparing raw material It is 15%, the range that the triethylenediamine accounts for the mass percent for preparing raw material is 5%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 280 revs/min of speed Alkane adds triethylenediamine, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon nitrogen of polysiloxanes- Butyl oxide is added in the copolymer by alkyl copolymer, is stirred with 1500 revs/min of speed, and paint base composition is obtained；

Polysilazane, butyl oxide and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride ether, R₂For alkane Base, R₃For hydrogen-based；

Polysilazane and butyl oxide are mixed, is stirred with 150 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica is added into the solution, ultrasonic disperse, until obtaining transparent coating composition, wherein poly- The mass percentage content that silazane accounts for coating composition is 30%, and the mass percentage content that butyl oxide accounts for coating composition is 35%, the mass percentage content that fumed silica accounts for coating composition is 35%；

Embodiment 11

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, butyl oxide and Sanya second that this, which prepares raw material, Base diamines, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆For hydrogen-based, it is former that the polysilazane accounts for the preparation The range of the mass percent of material is 40%, the R of the polysiloxanes₇For hydrogen-based, R₈For olefine, the polysiloxanes accounts for institute The range for stating the mass percent for preparing raw material is 40%, and the butyl oxide accounts for the range of the mass percent for preparing raw material It is 15%, the range that the triethylenediamine accounts for the mass percent for preparing raw material is 5%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 250 revs/min of speed Alkane adds triethylenediamine, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon nitrogen of polysiloxanes- Butyl oxide is added in the copolymer by alkyl copolymer, is stirred with 1100 revs/min of speed, and paint base composition is obtained；

Polysilazane and butyl oxide are mixed, is stirred with 150 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica is added into the solution, ultrasonic disperse, until obtaining transparent coating composition, wherein poly- The mass percentage content that silazane accounts for coating composition is 20%, and the mass percentage content that butyl oxide accounts for coating composition is 42%, the mass percentage content that fumed silica accounts for coating composition is 38%；

Embodiment 12

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, butyl oxide and Sanya second that this, which prepares raw material, Base diamines, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆For hydrogen-based, it is former that the polysilazane accounts for the preparation The range of the mass percent of material is 50%, the R of the polysiloxanes₇For hydrogen-based, R₈For olefine, the polysiloxanes accounts for institute The range for stating the mass percent for preparing raw material is 30%, and the butyl oxide accounts for the range of the mass percent for preparing raw material It is 15%, the range that the triethylenediamine accounts for the mass percent for preparing raw material is 5%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 300 revs/min of speed Alkane adds triethylenediamine, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon nitrogen of polysiloxanes- Butyl oxide is added in the copolymer by alkyl copolymer, is stirred with 1400 revs/min of speed, and paint base composition is obtained；

By the basecoat composition in matrix surface, the prime coat with a thickness of 10 microns is formed；

Polysilazane and butyl oxide are mixed, is stirred with 300 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica is added into the solution, ultrasonic disperse, until obtaining transparent coating composition, wherein poly- The mass percentage content that silazane accounts for coating composition is 10%, and the mass percentage content that butyl oxide accounts for coating composition is 50%, the mass percentage content that fumed silica accounts for coating composition is 40%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 50 microns is formed, the painting is obtained Cover part.

Embodiment 13

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, butyl oxide, particle size range that this, which prepares raw material, For 0.1~0.2 micron of silicon carbide and triethylenediamine, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆ For hydrogen-based, the range that the polysilazane accounts for the mass percent for preparing raw material is 50%, the R of the polysiloxanes₇For Hydrogen-based, R₈For olefine, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 30%, the butyl oxide The range for accounting for the mass percent for preparing raw material is 10%, and the silicon carbide accounts for the mass percent for preparing raw material Range is 5%, and the range that the triethylenediamine accounts for the mass percent for preparing raw material is 5%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 500 revs/min of speed Alkane adds triethylenediamine, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon nitrogen of polysiloxanes- After butyl oxide is added in the copolymer, then into the copolymer silicon carbide is added, with 1000 revs/min in alkyl copolymer Speed is stirred, and obtains paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 30 microns is formed；

Polysilazane, butyl oxide, Indian red and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride Ether, R₂For hydrogen-based, R₃For aryl；

Polysilazane and butyl oxide are mixed, is stirred with 200 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica, ultrasonic disperse, coating composition are added into the solution, wherein polysilazane accounts for coating group The mass percentage content for closing object is 10%, and the mass percentage content that butyl oxide accounts for coating composition is 70%, gas phase dioxy The mass percentage content that SiClx accounts for coating composition is 18%, and the Indian red accounts for the mass percent of the coating composition Range be 2%；

Embodiment 14

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, butyl oxide, particle size range that this, which prepares raw material, For 0.1~0.2 micron of aluminium oxide and triethylenediamine, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆ For hydrogen-based, the range that the polysilazane accounts for the mass percent for preparing raw material is 50%, the R of the polysiloxanes₇For Hydrogen-based, R₈For olefine, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 30%, the butyl oxide The range for accounting for the mass percent for preparing raw material is 10%, and the aluminium oxide accounts for the mass percent for preparing raw material Range is 7%, and the range that the triethylenediamine accounts for the mass percent for preparing raw material is 3%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 120 revs/min of speed Alkane adds triethylenediamine, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon nitrogen of polysiloxanes- After butyl oxide is added in the copolymer, then into the copolymer aluminium oxide is added, with 1100 revs/min in alkyl copolymer Speed is stirred, and obtains paint base composition；

Polysilazane, butyl oxide, Chinese indigo plant and fumed silica are provided, wherein the R of the polysilazane₁For alkyl fluoride ether, R₂ For hydrogen-based, R₃For aryl；

Polysilazane and butyl oxide are mixed, is stirred with 200 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica and Chinese indigo plant are added into the solution, ultrasonic disperse obtains coating composition, wherein poly- silicon nitrogen The mass percentage content that alkane accounts for coating composition is 10%, and the mass percentage content that butyl oxide accounts for coating composition is 80%, the mass percentage content that fumed silica accounts for coating composition is 8%, and the Chinese indigo plant accounts for the coating composition The range of mass percent is 2%；

Embodiment 15

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, butyl oxide, particle size range that this, which prepares raw material, For 1~3 micron of silicon carbide and stannous methide, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆For hydrogen-based, institute Stating polysilazane and accounting for the range of the mass percent for preparing raw material is 50%, the R of the polysiloxanes₇For hydrogen-based, R₈For chain Alkene, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 30%, and the butyl oxide accounts for the preparation The range of the mass percent of raw material is 10%, and the range that the silicon carbide accounts for the mass percent for preparing raw material is 7%, The range that the stannous methide accounts for the mass percent for preparing raw material is 3%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 420 revs/min of speed Alkane adds stannous methide, so that polysiloxanes is copolymerized with polysilazane, it is total to generate polysiloxanes-polysilazane After butyl oxide is added in the copolymer, then into the copolymer silicon carbide is added, with 1000 revs/min of speed in polymers It is stirred, obtains head product, head product is ground, so as to be reduced to 0.2~0.3 micro- for the range of the partial size of silicon carbide Rice obtains paint base composition；

Polysilazane, butyl oxide and fumed silica are provided, wherein the R of the polysilazane₁For aryl chain alkene, R₂For Aryl chain alkene, R₃For fluoroalkyl；

Polysilazane and butyl oxide are mixed, is stirred with 300 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica is added into the solution, is stirred with 1500 revs/min of speed, until obtaining transparent painting Feed composition, wherein the mass percentage content that polysilazane accounts for coating composition is 60%, and butyl oxide accounts for coating composition Mass percentage content is 20%, and the mass percentage content that fumed silica accounts for coating composition is 20%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 25 microns is formed, the painting is obtained Cover part.

Embodiment 16

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, paraxylene, partial size model that this, which prepares raw material, Enclose the silicon carbide and triethylenediamine for 1~3 micron, wherein the R of the polysilazane₄For hydrogen-based, R₅For hydrogen-based, R₆For Hydrogen-based, the range that the polysilazane accounts for the mass percent for preparing raw material is 20%, the R of the polysiloxanes₇For hydrogen Base, R₈For olefine, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 15%, the paraxylene The range for accounting for the mass percent for preparing raw material is 4%, and the silicon carbide accounts for the mass percent for preparing raw material Range is 60%, and the range that the triethylenediamine accounts for the mass percent for preparing raw material is 1%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 510 revs/min of speed Alkane adds triethylenediamine, so that polysiloxanes is copolymerized with polysilazane, generates the poly- silicon nitrogen of polysiloxanes- After paraxylene is added in the copolymer, then into the copolymer silicon carbide is added, with 1100 revs/min in alkyl copolymer Speed be stirred, obtain head product, head product is ground, so that the range of the partial size of silicon carbide is reduced to 0.21 ~0.33 micron, obtain paint base composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 26 microns is formed；

Polysilazane, paraxylene and fumed silica are provided, wherein the R of the polysilazane₁For fluoroalkyl, R₂For alkane Oxygroup, R₃For alkyl fluoride ether；

Polysilazane and butyl oxide are mixed, is stirred with 350 revs/min of speed, so that polysilazane is dissolved in butyl oxide, is obtained Solution is obtained, then fumed silica is added into the solution, is stirred with 1000 revs/min of speed, until obtaining transparent painting Feed composition, wherein the mass percentage content that polysilazane accounts for coating composition is 60%, and paraxylene accounts for coating composition Mass percentage content be 20%, fumed silica account for coating composition mass percentage content be 20%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 35 microns is formed, the painting is obtained Cover part.

Embodiment 17

The preparation method of the coating piece the following steps are included:

Matrix is provided；

There is provided prime coat prepares raw material, and it includes: polysilazane, polysiloxanes, paraxylene and partial size that this, which prepares raw material, The silicon carbide that range is 0.2~0.3 micron, wherein the R of the polysilazane₄For hydrogen-based, R₅For alkane, R₆It is described for hydrogen-based The range that polysilazane accounts for the mass percent for preparing raw material is 25%, the R of the polysiloxanes₇For alkylamino radical, R₈For chain Alkene, the range that the polysiloxanes accounts for the mass percent for preparing raw material is 25%, and the paraxylene accounts for the system The range of the mass percent of standby raw material is 20%, and the range that the silicon carbide accounts for the mass percent for preparing raw material is 30%；

Polysilazane and polysiloxanes are placed in reactor, polysilazane and poly- silicon oxygen are mixed with 560 revs/min of speed Alkane, polysiloxanes are copolymerized with polysilazane, generate polysiloxanes-polysilazane copolymers, paraxylene is added After into the copolymer, then into the copolymer silicon carbide is added, is stirred with 1100 revs/min of speed, obtains priming paint Composition；

By the basecoat composition in matrix surface, the prime coat with a thickness of 2 microns is formed；

Polysilazane, paraxylene and fumed silica are provided, wherein the R of the polysilazane₁For fluoroalkyl, R₂For fluorine Alkyl, R₃For fluoroalkyl；

Polysilazane and paraxylene are mixed, is stirred with 200 revs/min of speed, so that polysilazane is dissolved in diformazan Benzene obtains solution, then fumed silica is added into the solution, is stirred with 1100 revs/min of speed, until obtaining transparent Coating composition, wherein polysilazane account for coating composition mass percentage content be 60%, paraxylene accounts for coating group The mass percentage content for closing object is 20%, and the mass percentage content that fumed silica accounts for coating composition is 20%；

By the coating composition in the surface of prime coat, the finishing coat with a thickness of 5 microns is formed, the coating is obtained Part.

The hardness of the coating piece of above-described embodiment 1-17, adhesion temperature tolerance and water contact angle are tested, test knot Fruit please join table 1.

The physical property measurement result of the coating piece of 1 embodiment 1-17 of table

	Hardness (H)	Attachment	Heatproof (weightless %)	Water contact angle (°)
					Embodiment 1	9	0	1.73	121
Embodiment 2	9	0	1.32	120
					Embodiment 3	9	0	1.36	119
Embodiment 4	9	0	1.44	118
					Embodiment 5	9	0	1.56	118
Embodiment 6	9	0	2.02	117
					Embodiment 7	8	0	2.05	117
Embodiment 8	8	0	2.31	115
					Embodiment 9	8	0	1.86	116
Embodiment 10	8	0	1.09	115
					Embodiment 11	7	0	1.79	115
Embodiment 12	7	0	1.07	116
					Embodiment 13	7	0	1.06	116
Embodiment 14	9	0	1.08	117
					Embodiment 15	9	0	1.15	123
Embodiment 16	9	0	1.15	125
					Embodiment 17	8	0	1.14	123

The hardness of the coating piece of embodiment 1-17 is tested according to GB/T 6739-1796 (hardness of film method of testing), The range for showing the hardness of the coating piece of embodiment 1-17 is 6~9H, shows that the coating piece of embodiment 1-17 all has preferably Hardness.

The adhesion of the coating piece of embodiment 1-17 is tested according to GB/T 9286 (adhesive force method of testing), is shown The hundred lattice attachment of the coating piece of embodiment 1-17 can reach 0 grade, show that the adhesion of the coating piece of embodiment 1-17 is also preferable.

The weightlessness of the coating piece of embodiment 1-17 is tested according to GB/T 9286 (temperature tolerance test method), display is real The temperature tolerance for applying the coating piece of a 1-17 is also preferable.

It is tested using water contact angle of the shape image analysis method to the coating piece of embodiment 1-17, embodiment 1-17 Coating piece water contact angle be greater than 90 °, show the advantages of coating piece of embodiment 1-17 all has easy cleaning.

The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all in the present invention Inventive concept under, using equivalent structure transformation made by present specification, be applied directly or indirectly in other phases The technical field of pass is included in scope of patent protection of the invention.

Claims

1. a kind of coating composition, which is characterized in that contain polysilazane and fumed silica in the coating composition, The chemical structure of the polysilazane are as follows:Wherein, R₁、R₂And R₃At least one of three is low-surface-energy Group, the low-surface-energy group are hydrogen-based, siloxy, alkyl siloxy, fluoroalkyl or alkyl fluoride ether.

2. coating composition as described in claim 1, which is characterized in that the R₁、R₂And R₃Any or wantonly two in three A is alkyl, aryl, olefine, alkoxy or naphthenic base.

3. coating composition as described in claim 1, which is characterized in that the polysilazane accounts for the matter of the coating composition Measure degree be 10~80%, the fumed silica account for the coating composition mass percentage content be 2~ 40%.

4. coating composition as claimed in claim 3, which is characterized in that the polysilazane accounts for the matter of the coating composition Measure degree be 10~60%, the fumed silica account for the coating composition mass percentage content be 2~ 30%.

5. such as the described in any item coating compositions of claim 3-4, which is characterized in that also containing molten in the coating composition Agent, the mass percentage content that the solvent accounts for the coating composition is 10~80%.

6. coating composition as claimed in claim 5, which is characterized in that the solvent be selected from alkane solvents, ether solvent, At least one of ketones solvent and benzenesulfonamide derivative species solvent.

7. coating composition as claimed in claim 6, which is characterized in that the alkane solvents be selected from n-hexane, normal octane, At least one of n-decane, chloroform, methylene chloride, dichloroethylene and mineral oil are a variety of；The ether solvent is selected from At least one of ether, petroleum ether and butyl oxide；The ketones solvent is selected from acetone, methyl ethyl ketone, cyclohexanone and different Fo Er At least one of ketone；The benzenesulfonamide derivative species solvent is in toluene, meta-xylene, paraxylene, ortho-xylene and chlorobenzene At least one.

8. a kind of coating piece, which is characterized in that including matrix and the finishing coat for being formed in described matrix surface, in the finishing coat Contain such as described in any item coating compositions of claim 1-7.

9. coating piece as claimed in claim 8, which is characterized in that the range of the thickness of the finishing coat be 0.01 micron~ 100 microns.

10. coating piece as claimed in claim 8, which is characterized in that the coating piece further includes being formed in matrix and finishing coat Between prime coat, the raw material for preparing of the prime coat includes polysilazane and polysiloxanes, the polysilazane and poly- silicon oxygen Alkane is copolymerized generation polysilazane-polysiloxane copolymer.

11. coating piece as claimed in claim 10, which is characterized in that the polysilazane accounts for the quality hundred for preparing raw material The range for dividing ratio is 6~96%, and the range that the polysiloxanes accounts for the mass percent for preparing raw material is 4~94%.

12. coating piece as claimed in claim 10, which is characterized in that the range of the thickness of the prime coat be 0.01 micron~ 100 microns.

13. coating piece as claimed in claim 10, which is characterized in that the structural formula for preparing the polysilazane in raw material Are as follows:Wherein, R₄For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy, alkyl siloxy or alkanamine Base, R₅For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy, alkyl siloxy or alkylamino radical, R₆For hydrogen-based, alkane, Cycloalkane, olefine, aryl, alkoxy, alkyl siloxy or alkylamino radical.

14. coating piece as claimed in claim 13, which is characterized in that the R₄And R₅At least one of be hydrogen-based or alkene Hydrocarbon.

15. coating piece as claimed in claim 10, which is characterized in that the molecular weight for preparing the polysilazane in raw material is 100~1000.

16. coating piece as claimed in claim 10, which is characterized in that the structural formula of the polysiloxanes are as follows: Wherein, R₇For hydrogen-based, alkane, cycloalkane, olefine, aryl, alkoxy or alkyl siloxy, R₈For hydrogen-based, alkane, cycloalkanes Hydrocarbon, olefine, aryl, alkoxy or alkyl siloxy.

17. coating piece as claimed in claim 10, which is characterized in that the molecular weight of the polysiloxanes is 100~1300.

18. coating piece as claimed in claim 11, which is characterized in that the raw material for preparing further includes solvent, and the solvent accounts for The range of the mass percent for preparing raw material is 10~66%, and the solvent is selected from alkane solvents, ether solvent, ketone At least one of solvent and benzenesulfonamide derivative species solvent.

19. coating piece as claimed in claim 11, which is characterized in that the raw material for preparing further includes catalyst, the catalysis The range that agent accounts for the mass percent for preparing raw material is 0.01~5%, and the catalyst is amines catalyst and/or metal Class catalyst.

20. coating piece as claimed in claim 11, which is characterized in that the raw material for preparing further includes filler, and the filler accounts for The range of the mass percent for preparing raw material is 1~50%, and the filler is selected from silicon carbide, aluminium oxide, titanium oxide, oxidation At least one in zinc, magnesia, aluminium hydroxide, white carbon black, concave convex rod, kaolin, bentonite, glass microsphere and ceramic microsphere Kind.

21. coating piece as claimed in claim 18, which is characterized in that the raw material for preparing further includes filler and catalyst, institute Stating filler and accounting for the range of the mass percent for preparing raw material is 1~50%, and the catalyst accounts for the matter for preparing raw material The range for measuring percentage is 10~66%, and the polysiloxanes and polysilazane account for the mass percent of the coating composition Range is 0.01~5%.

22. a kind of preparation method of coating piece, comprising the following steps:

There is provided matrix and such as coating composition of any of claims 1-7；

By the coating composition in the surface of matrix, finishing coat is formed in the surface of matrix, the coating piece is made.

23. the preparation method of coating piece as claimed in claim 22, which is characterized in that the preparation method further includes following step It is rapid:

Mixing polysilazane and polysiloxanes, polysilazane and polysiloxanes are copolymerized, and generate the poly- silicon oxygen of polysilazane- Paint base composition is made in alkyl copolymer；

By the basecoat composition in the surface of matrix, prime coat is formed, coats the painting then at the surface of the prime coat Feed composition forms the finishing coat in the surface of prime coat, the coating piece is made.

24. a kind of household electrical appliance, which is characterized in that the household electrical appliance include such as the described in any item coatings of claim 8-21 Part.