CN112137421A - Coating and cooking utensil - Google Patents
Coating and cooking utensil Download PDFInfo
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- CN112137421A CN112137421A CN202010597711.7A CN202010597711A CN112137421A CN 112137421 A CN112137421 A CN 112137421A CN 202010597711 A CN202010597711 A CN 202010597711A CN 112137421 A CN112137421 A CN 112137421A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 274
- 238000010411 cooking Methods 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 224
- 239000011148 porous material Substances 0.000 claims abstract description 87
- 239000000126 substance Substances 0.000 claims abstract description 42
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 27
- 239000011737 fluorine Substances 0.000 claims description 26
- 229910052731 fluorine Inorganic materials 0.000 claims description 26
- 239000003973 paint Substances 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 239000010439 graphite Substances 0.000 claims description 17
- 229910002804 graphite Inorganic materials 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- QLOAVXSYZAJECW-UHFFFAOYSA-N methane;molecular fluorine Chemical compound C.FF QLOAVXSYZAJECW-UHFFFAOYSA-N 0.000 claims description 8
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 8
- 229910021536 Zeolite Inorganic materials 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000010457 zeolite Substances 0.000 claims description 7
- 239000002318 adhesion promoter Substances 0.000 claims description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 150000001282 organosilanes Chemical class 0.000 claims description 3
- QCTJRYGLPAFRMS-UHFFFAOYSA-N prop-2-enoic acid;1,3,5-triazine-2,4,6-triamine Chemical compound OC(=O)C=C.NC1=NC(N)=NC(N)=N1 QCTJRYGLPAFRMS-UHFFFAOYSA-N 0.000 claims description 3
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 86
- 239000002987 primer (paints) Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
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- WDJHALXBUFZDSR-UHFFFAOYSA-N Acetoacetic acid Natural products CC(=O)CC(O)=O WDJHALXBUFZDSR-UHFFFAOYSA-N 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- WOWBFOBYOAGEEA-UHFFFAOYSA-N diafenthiuron Chemical compound CC(C)C1=C(NC(=S)NC(C)(C)C)C(C(C)C)=CC(OC=2C=CC=CC=2)=C1 WOWBFOBYOAGEEA-UHFFFAOYSA-N 0.000 description 1
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- FGBJXOREULPLGL-UHFFFAOYSA-N ethyl cyanoacrylate Chemical compound CCOC(=O)C(=C)C#N FGBJXOREULPLGL-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/025—Vessels with non-stick features, e.g. coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Cookers (AREA)
Abstract
The application provides a coating and a cooking utensil, wherein the coating comprises a non-stick coating, an inorganic non-stick material and a substance containing a reactive group; the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass ratio of the inorganic non-stick material in the coating is 1-20%. The coating can improve the adhesive force of the coating and enhance the binding force of the non-stick layer and the vessel.
Description
Technical Field
The application relates to the technical field of non-stick materials, in particular to a coating and a cooking utensil.
Background
The non-stick coating is a special coating with the surface of the coating not easy to adhere by other viscous substances or easy to remove after adhesion, has the advantages of small friction coefficient, low surface energy, non-stick property, good weather resistance and the like, and is widely applied to the fields of household appliances, cooking utensils, automobiles and the like. For example, a common non-stick pan is used for cooking food, has the advantages of non-stick pan when frying/frying food, less oil smoke, easy cleaning and the like, and is generally favored by consumers since the world. With the development of economy and the improvement of living standard of people, the requirement on cooking utensils is higher and higher, so that the improvement of the service performance of the non-stick layer is always the direction of efforts of researchers.
The existing cooking utensil can form a non-stick layer by coating the non-stick coating on the surface of a utensil, so that the non-stick effect is achieved. However, the non-stick coating obtained by coating the existing non-stick coating has the defects that the non-stick property can be rapidly lost under the conditions of high alkalinity and surface abrasion, and the non-stick service life is short.
Disclosure of Invention
The application provides a coating and a cooking utensil to improve the adhesive force of the coating and enhance the binding force of an anti-sticking layer and a utensil.
The first aspect of the application provides a coating comprising a non-stick coating, the coating further comprising an inorganic non-stick material and a substance containing reactive groups;
the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass ratio of the inorganic non-stick material in the coating is 1-20%.
The coating comprises a non-stick coating, an inorganic non-stick material and a substance containing a reactive group, wherein the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the inorganic porous material and the self-lubricating material have stable crystals and high melting points, so that the inorganic non-stick material has better thermal stability and high temperature resistance, and the addition of the inorganic non-stick material on the base material of the existing non-stick coating increases the structural stability of the coating, so that the coating is not easy to change substances and age in the cooking process. In addition, the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and are not easy to scratch, so that the durability of the coating can be effectively improved, and the service life of the coating is prolonged. The mass proportion of the inorganic non-stick material in the coating is 1-20% so as to avoid the influence of excessive inorganic non-stick material on the film forming performance and the later construction performance of the coating. In addition, substances containing reactive groups in the coating can form covalent bonds with oxides on the surface of the vessel, so that the bonding force between the coating and the vessel is enhanced.
In addition, the inorganic porous material has non-stick performance due to the characteristics of low surface energy and porous oil absorption, and the self-lubricating material also has non-stick performance due to the characteristics of self-lubricating and porous oil absorption formed by the lamellar crystals, so that the non-stick performance of the non-stick coating can be assisted
Optionally, the mass ratio of the substance containing the reactive group in the coating is 0.5-5%, so that the bonding force of the coating can be improved, the coating formed by the coating can be prevented from falling off from the surface of a vessel, and the film-forming property of the coating is not affected, so that the coating can form a smooth and continuous coating.
Optionally, the inorganic non-stick material comprises a self-lubricating material, and the mass ratio of the self-lubricating material in the coating is 1-10%, so that the coating has a lasting non-stick property and cannot fall off due to laminar lubrication.
Optionally, the inorganic non-stick material comprises an inorganic porous material, and the mass ratio of the inorganic porous material in the coating is 1-20%, so that the coating has a lasting non-stick property and keeps a good film-forming property.
Optionally, the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, and the mass ratio of the inorganic non-stick material in the coating is 1% -15%.
The inorganic non-stick material in the coating comprises a self-lubricating material and an inorganic porous material, so that the coating has the properties of the inorganic porous material and the self-lubricating material simultaneously, and the non-stick effect of the coating is improved; the mass proportion of the inorganic non-stick material is 1-15%, so that the coating has lasting non-stick performance and keeps good film forming performance.
Optionally, the mass ratio of the self-lubricating material in the inorganic non-stick material is 20% -50%, and the mass ratio of the inorganic porous material is 50% -80%.
The content of the inorganic porous material in the inorganic non-stick material is not less than that of the self-lubricating material, so that the situation that the bonding force between the coating and a vessel or between two adjacent coatings formed by the coating is reduced due to overhigh self-lubricating performance of the coating is prevented, the coatings are easy to fall off, and the non-stick service life of a cooking utensil is influenced; the mass ratio of the self-lubricating material is not less than 20%, so that the self-lubricating material and the inorganic porous material jointly play a non-stick role, and the influence of oil stains or impurities on the non-stick performance in the use process is reduced.
Optionally, the particle size of the inorganic non-stick material is 300-2000 meshes, so that the inorganic non-stick material has a complete surface structure and a good non-stick property, and the inorganic non-stick material, a substance containing a reactive group and a non-stick coating are uniformly mixed to form a smooth and uniform non-stick layer on the surface of a vessel.
Optionally, the inorganic porous material is one or more of diatomite, bentonite or zeolite mixed at any proportion, that is, the inorganic porous material is made of natural inorganic porous materials such as diatomite, bentonite or zeolite, so that raw materials are convenient to obtain, and the manufacturing cost is reduced.
Optionally, the self-lubricating material is one or more of graphite, graphite fluoride or molybdenum disulfide mixed at any proportion, that is, the self-lubricating material is made of natural inorganic self-lubricating materials such as graphite, graphite fluoride or molybdenum disulfide, raw materials are convenient to obtain, and manufacturing cost is reduced.
Optionally, the reactive group-containing material is a hydroxyl or carboxyl-containing compound or mixture.
Optionally, the substance containing the reactive group is one or more of an organosilane, an adhesion promoter or melamine acrylate mixed in any proportion.
A second aspect of the present application provides a cooking appliance comprising a vessel, the surface of the vessel being provided with a non-stick layer comprising a primer layer applied to the surface of the vessel, characterised in that the composition of the primer layer comprises a non-stick coating, an inorganic non-stick material and a substance containing reactive groups;
the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass proportion of the inorganic non-stick material in the base coat is 1-20%.
Optionally, the non-stick layer comprises at least a primer layer, the primer layer is coated on the surface of the vessel, and the primer layer is coated by the coating.
The non-stick layer of the cooking utensil at least comprises the base coat, the base coat is coated on the surface of a utensil, and the base coat is formed by coating paint, so that the durability and the bonding performance of the base coat are improved, the service life of the non-stick layer is prolonged, and the bonding force of the non-stick layer is improved by bonding the base coat and the surface of the utensil.
Optionally, the non-stick layer further comprises a midcoat layer applied to a side of the base coat layer facing away from the vessel, the composition of the midcoat layer comprising a non-stick coating and an inorganic non-stick material.
The cooking utensil also comprises a middle coating, wherein the middle coating is coated on one side of the bottom coating, which is far away from the utensil, and the components of the middle coating comprise non-stick paint and inorganic non-stick material.
Optionally, the inorganic non-stick material is a self-lubricating material;
the mass ratio of the self-lubricating material in the bottom coating is 2-5%; and/or
The mass proportion of the self-lubricating material in the middle coating is 5-8%.
In the non-stick layer of the cooking utensil, the mass proportion of the allowed self-lubricating material in the bottom coating is small, so that the phenomenon that the bonding force between the bottom coating and a utensil is reduced due to the overhigh self-lubricating property of the bottom coating is prevented, and the coating is easy to fall off is avoided; the mass ratio of the self-lubricating material allowed in the middle coating is larger, so that the middle coating has a durable non-stick performance, and the service life of the cooking utensil is prolonged.
Optionally, the inorganic non-stick material is an inorganic porous material;
the mass ratio of the inorganic porous material in the bottom coating is 5-15%; and/or
The mass proportion of the inorganic porous material in the intermediate coating is 5-10%.
In the non-stick layer of the cooking utensil, the mass ratio of the allowed inorganic porous materials in the bottom coating layer is larger, and the mass ratio of the allowed inorganic porous materials in the middle coating layer is smaller, so that the bottom coating layer has longer non-stick performance than the middle coating layer, and the service life of the cooking utensil is prolonged.
Optionally, the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, wherein the self-lubricating material accounts for 20-50% of the mass of the inorganic non-stick material, and the inorganic porous material accounts for 50-80% of the mass of the inorganic porous material;
the mass ratio of the inorganic non-stick material in the bottom coating is 5-15%; and/or
The mass proportion of the inorganic porous material in the intermediate coating is 5-10%.
The inorganic non-stick material in the non-stick layer of the cooking utensil simultaneously comprises the self-lubricating material and the inorganic porous material, so that the coating has the performances of the inorganic porous material and the self-lubricating material simultaneously, and the non-stick effect of the coating is improved; the content of the inorganic porous material is not less than that of the self-lubricating material, so that the phenomenon that the bonding force between the coating and a vessel or between two adjacent coatings formed by the coating is reduced due to overhigh self-lubricating performance of the coating is prevented, the coatings are easy to fall off, and the non-stick service life of a cooking utensil is influenced; the ratio of the mass of the allowed inorganic non-stick material in the base coat is larger, and the ratio of the mass of the allowed inorganic non-stick material in the intermediate coat is smaller, so that the base coat has longer-lasting non-stick performance than the intermediate coat, and the service life of the cooking utensil is prolonged.
Optionally, the non-stick coating is a fluorine-containing coating, the non-stick layer further comprises a top coating, the top coating is coated on one side of the middle coating, which is far away from the bottom coating, and the top coating is formed by coating the fluorine-containing coating.
As the fluorine-containing coating has higher non-stick performance and film-forming performance, the non-stick performance of the inorganic non-stick material is slightly inferior to that of the fluorine-containing coating and the film-forming performance is poorer; the non-stick layer of the cooking utensil adopts the fluorine-containing paint to form the top coating, so that the non-stick effect of the cooking utensil at the initial use stage can be optimal, the non-stick layer can form a smooth and flat surface, and the non-stick layer adopts the paint to form the bottom coating and/or the middle coating, so that the cooking utensil has a lasting non-stick effect.
Optionally, the thickness of the non-stick layer is 30-45 μm, and within the thickness range, the non-stick layer can be ensured to completely cover the vessel, and the non-stick layer has better hardness and higher non-stick performance, and also has better appearance and good construction performance.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a partial structural schematic view of a cooking appliance provided in an embodiment of the present application.
Reference numerals:
1-a vessel;
2-a non-stick layer;
20-a base coat;
22-middle coating;
24-topcoat layer.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The embodiment of the application provides a coating, which comprises a non-stick coating, an inorganic non-stick material and a substance containing a reactive group, wherein the non-stick coating can be any existing non-stick coating, such as a fluorine-containing coating or a ceramic coating, and the like, that is, the inorganic non-stick material and the substance containing the reactive group are added on the basis of the existing non-stick coating to form a new coating; the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, that is, the inorganic non-stick material can only comprise the inorganic porous material, can only comprise the self-lubricating material, and can also comprise the inorganic porous material and the self-lubricating material. The inorganic porous material and the self-lubricating material have stable crystals and high melting points, so that the heat stability and the high temperature resistance are better, the inorganic non-stick material is added on the base material of the existing non-stick coating, the structure stability of the coating is improved, and the coating is not easy to change substances and age in the cooking process. In addition, the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and are not easy to scratch, so that the durability of the coating can be effectively improved, and the service life of the coating is prolonged. In addition, substances containing reactive groups in the coating can form covalent bonds with oxides on the surface of the vessel, so that the bonding force between the coating and the vessel is enhanced.
Furthermore, the mass proportion of the inorganic non-stick material in the coating is 1-20% so as to avoid the influence of excessive inorganic non-stick material on the film forming performance and the later construction performance of the coating; when the mass ratio of the inorganic non-stick material is more than 20%, the inorganic non-stick material is excessive, so that the coating is difficult to form a smooth and uniform coating, or the coating is difficult to combine with the vessel 1, so that the coating is easy to fall off; when the mass proportion of the inorganic non-stick material is less than 1%, the inorganic non-stick material is too little to effectively function, and the coating is still easy to wear and rapidly loses the non-stick performance.
Specifically, typically but not by way of limitation, the mass proportion of the inorganic non-stick material in the coating may be, for example, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, etc.
In an embodiment, the inorganic non-stick material only comprises self-lubricating material, and the mass ratio of the self-lubricating material in the coating is 1% to 10%, for example, the mass ratio of the self-lubricating material may be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, etc. Within the range, the coating has lasting non-stick performance and keeps stronger bonding performance; when the mass proportion of the self-lubricating material is more than 10%, the self-lubricating property of the coating is too high, so that the binding force between the coating and the utensil 1 or between two adjacent coatings formed by the coating is reduced, the coatings are easy to fall off, and the non-stick service life of the cooking utensil is influenced; when the mass proportion of the self-lubricating material is less than 1%, the content of the self-lubricating material in the coating is too small to effectively play a role, and the coating is still easy to wear and quickly loses the non-stick property.
In another embodiment, the inorganic non-stick material comprises only inorganic porous material, the mass ratio of the inorganic porous material in the coating is 1% to 20%, for example, the mass ratio of the inorganic porous material may be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, or the like. Within the range, the coating has lasting non-stick performance and keeps better film-forming performance; when the mass ratio of the inorganic porous material is more than 20%, the content of the inorganic porous material in the coating is excessive, so that the coating is difficult to form a smooth and uniform coating; when the mass ratio of the inorganic porous material is less than 1%, the content of the inorganic porous material in the coating is too small to effectively function, and the coating is still easy to wear and rapidly loses the non-stick property.
Under another embodiment, the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, so that the coating has the properties of the inorganic porous material and the self-lubricating material simultaneously, and the non-stick effect of the coating is improved; the mass ratio of the inorganic non-stick material in the paint is 1% to 15%, for example, the mass ratio of the inorganic non-stick material in the paint may be 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, or the like. Within this range, the coating can have long-lasting non-stick properties and maintain good film-forming properties. When the mass proportion of the inorganic non-stick material in the coating is more than 15%, the content of the inorganic non-stick material in the coating is too much, so that the binding force and the film-forming property of the coating are reduced, a coating formed by the coating is easy to fall off, and the coating is difficult to form a smooth and uniform coating; when the mass proportion of the inorganic non-stick material in the coating is less than 1%, the content of the inorganic non-stick material in the coating is too small to effectively function, and the coating is still easy to wear and rapidly loses the non-stick property.
Preferably, when the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, the mass ratio of the self-lubricating material in the inorganic non-stick material is 20% to 50%, and the mass ratio of the inorganic porous material is 50% to 80%, for example, the mass ratio of the inorganic porous material may be 50%, 55%, 60%, 65%, 70%, 75% or 80%, etc., and correspondingly, the mass ratio of the self-lubricating material may be 50%, 45%, 40%, 35%, 30%, 25% or 20%, etc. On one hand, the bonding performance of the self-lubricating material is poor, the formed coating is easy to fall off, the mass proportion of the self-lubricating material is not more than 50%, and the mass proportion of the inorganic porous material is not less than 50%, so that the content of the inorganic porous material is not less than the content of the self-lubricating material, the situation that the bonding force between the coating and the utensil 1 or between two adjacent coatings formed by the coating is reduced due to overhigh self-lubricating performance of the coating is prevented, the coating is easy to fall off, and the non-stick service life of a cooking utensil is influenced; on the other hand, micropores of the inorganic porous material are easily blocked by oil stains or impurities in the using process, so that the non-stick performance is reduced, the mass proportion of the self-lubricating material is not less than 20%, and the mass proportion of the inorganic porous material is not more than 80%, so that the self-lubricating material and the inorganic porous material play a non-stick role together, and the influence of the oil stains or the impurities on the non-stick performance in the using process is reduced.
Further, the inorganic porous material is one or more of diatomite, bentonite or zeolite. And because the material characteristics of the diatomite, the bentonite or the zeolite are similar, the materials have low surface energy, stable microporous structure and crystal, and similar melting point and hardness which can influence the non-stick performance and the non-stick service life. Therefore, when the inorganic porous material is a mixture of a plurality of kinds of diatomaceous earth, bentonite, or zeolite (a plurality of kinds, including two or more kinds, in the present application), it is mixed in any ratio of any plurality. The inorganic porous material is made of natural inorganic porous materials such as diatomite, bentonite or zeolite, raw materials are convenient to obtain, and the manufacturing cost is reduced.
Specifically, the inorganic porous material has non-stick properties due to the characteristics of low surface energy and porous oil absorption. The non-stick performance of the inorganic porous material is explained in detail by taking diatomite as an example, the diatomite is composed of amorphous hydrous silicon dioxide which is in an amorphous structure, the arrangement of atoms in a three-dimensional space is short-range ordered and long-range disordered, and the surface energy is small, so that the diatomite layer has good non-stick performance; in addition, the diatomite has a special porous structure, the pore size is in the micron level, and a large amount of edible oil can be adsorbed in the using process, so that a layer of oil film is always kept on the surface of the diatomite layer, the non-stick performance of the diatomite layer is further enhanced, and the cooking utensil achieves a good non-stick effect.
Further, the self-lubricating material is one or more of graphite, graphite fluoride or molybdenum disulfide. And because the material characteristics of graphite, graphite fluoride or molybdenum disulfide are similar, the layered crystal, the microporous structure and the crystal stability, the melting point and the hardness which can influence the non-stick performance and the non-stick service life of each material are similar. Therefore, when the self-lubricating material is a mixture of a plurality of graphite, graphite fluoride or molybdenum disulfide, the self-lubricating material is a mixture of any plurality of graphite, graphite fluoride or molybdenum disulfide in any proportion. The self-lubricating material is made of natural inorganic self-lubricating materials such as graphite, graphite fluoride or molybdenum disulfide, raw materials are convenient to obtain, and the manufacturing cost is reduced.
Specifically, the self-lubricating material has non-stick properties due to the self-lubricating and porous oil-absorbing properties of the lamellar crystals. The non-stick performance of the self-lubricating material is explained in detail by taking natural crystalline graphite as an example, and the natural crystalline graphite has a layered crystal structure, so that the natural crystalline graphite has good self-lubricating performance; carbon atoms form a hexagonal net-shaped graphite layer by using sp2 hybridized orbitals, the bond energy between carbon and carbon belongs to a resonance R-bond, and the bond energy is up to 627kJ/mol, so that the single-layer graphite layer has firm property and is prevented from being mechanically scratched in the using process; the acting force between the graphite layers belongs to weak van der Waals force, and the bonding energy is only 5.4kJ/mol, so that the multilayer graphite layers have good interlayer slippage, and the natural crystalline graphite has non-stick performance. In addition, a plurality of gaps are formed among the layered structures of the graphite, the size of the gaps is in the micron level, a large amount of edible oil can be adsorbed in the actual use process, a layer of oil film is always kept on the surface, and the non-stick performance is further enhanced.
Further, the mass proportion of the substance containing the reactive group in the coating is less than or equal to 5 percent; preferably, the following components are adopted: 0.5% to 5%, for example, the mass ratio of the reactive group-containing substance in the coating material may be 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, or the like. In the range, the binding force of the coating can be improved, the coating formed by the coating is prevented from falling off from the surface of the vessel 1, and the film forming property of the coating is not influenced, so that the coating can form a smooth and continuous coating; when the mass ratio of the reactive group-containing substance is more than 5%, the reactive group-containing substance is excessive, resulting in difficulty in forming a smooth and uniform non-stick coating layer on the coating material; when the mass ratio of the reactive group-containing substance is less than 0.5%, the reactive group-containing substance is too small to exert an effective action, and the adhesion between the coating layer formed by the coating material and the vessel 1 is still poor, so that the non-stick layer 2 is still likely to fall off.
Further, the substance containing the reactive group is a compound or a mixture containing a hydroxyl group or a carboxyl group, and the hydroxyl group or the carboxyl group can interact with the compound on the surface of the vessel, so that the coating and the vessel are firmly combined together.
Further, the reactive group-containing substance is one or more of an organosilane, an adhesion promoter (for example, a cyanoacetoxy-based wet adhesion promoter, an acetoacetic acid-based adhesion promoter, HMDAA, or the like), and melamine acrylate, and is mixed in an arbitrary ratio.
The non-stick coating of the embodiment of the application is an existing non-stick coating, such as a fluorine coating or a ceramic coating. Particularly, the fluorine coating is very easy to shovel off in long-term use due to the soft texture; thus, the conventional fluorine coating needs to be added with the inorganic non-stick material and the substance containing reactive groups to improve the hardness, heat resistance and bonding force.
To illustrate the bonding properties of the above coatings of the present application, the present application takes the existing fluorine coating as a non-stick coating as a representative, and a bonding property comparison experiment is performed. Specifically, the existing fluorine paint, inorganic non-stick material added to fluorine paint and substance containing reactive group are respectively coated on the surface of a vessel to form a coating, and the adhesion of the coating is tested, and the comparative experiment is shown in tables 1 to 4.
The specific test procedure can be referred to as follows: the coating surface on the test panel is bonded with the coating on another test column through adhesives (epoxy resin adhesive and quick-drying cyanoacrylate adhesive), the stress of the coating vertically upwards is measured through a hydraulic or mechanical method, and the measured tensile force per unit area is used for representing the adhesive force of the coating.
Wherein, each sample number represents a group of sample pots, and the experimental results are the average value of the experimental results of the group of sample pots, for example, 1# represents a group of existing fluorine paint non-stick pots, and the adhesive force 1.6 is the average value of the adhesive force of the group of fluorine paint pots.
Except for different coatings, other parameters (such as the shape, the size, the material, the thickness, the forming process, the pretreatment and the like of the vessel) of each group of embodiments are completely the same, and the rest of experimental conditions are also completely the same.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
As can be seen from the data in tables 1 to 4, the adhesion force is reduced after the inorganic non-stick material is added into the fluorine-containing coating, so that the bonding performance of the coating and the vessel is poor; when a substance containing a reactive group is further added, the adhesion is enhanced. When the addition amount of the substance containing the reactive group is 0.5-5%, the adhesive force is obviously enhanced, and the more the addition amount of the substance containing the reactive group is, the more the adhesive force is obviously enhanced; when the addition amount of the substance containing the reactive group is less than 0.5 percent, the adhesive force of the coating is not obviously increased, and the adhesive force is still lower than that of the existing fluorine-containing coating and can not meet the use requirement; when the amount of the reactive group-containing substance added exceeds 5%, the film-forming properties are affected, so that experimental tests cannot be conducted. Furthermore, when the mass proportion of the inorganic non-stick material exceeds 20%, the sample has an unacceptable coating, so that the experimental test cannot be performed. It should be noted that when the mass ratio of the inorganic non-stick material is less than 1%, and only a proper ratio of the reactive group is added, the qualification of the coating is not affected, and the coating has good adhesion, but the non-stick property of the ware is affected.
Further, the particle size of the inorganic non-stick material is 300 mesh to 2000 mesh, preferably 500 mesh to 1000 mesh, and typically, but not limitatively, the particle size of the self-lubricating material may be, for example, 300 mesh, 400 mesh, 500 mesh, 600 mesh, 700 mesh, 800 mesh, 900 mesh, 1000 mesh, 1100 mesh, 1200 mesh, 1300 mesh, 1400 mesh, 1500 mesh, 1600 mesh, 1700 mesh, 1800 mesh, 1900 mesh, 2000 mesh, or the like. The inorganic non-stick material can have a complete surface structure and a good non-stick performance, and can be uniformly mixed with a non-stick coating to form a smooth and uniform coating on the surface of the utensil 1; when the particle size of the inorganic non-stick material is smaller than 2000 meshes, the structure (such as a porous or lamellar crystal structure) of the non-stick property formed by the inorganic non-stick material itself is damaged due to the undersize of the inorganic non-stick material, so that the non-stick property is lost, and the processing cost of the inorganic non-stick material is also overlarge; when the particle size of the inorganic non-stick material is larger than 300 meshes, the inorganic non-stick material and the non-stick coating material are difficult to uniformly mix due to the excessively large size of the inorganic non-stick material, or the coating formed by the coating material has a non-smooth surface and a granular feeling.
Specifically, the inorganic non-stick material is ground and then mixed with the non-stick paint, and the mixture is uniformly stirred and dispersed to form the paint provided by the embodiment of the application. The substance containing the reactive group can be directly added into the non-stick coating and fully and uniformly stirred.
The inorganic non-stick material can be added in the form of powder or slurry. Preferably, the inorganic non-stick material is ground to a suitable particle size before being mixed with the non-stick coating in powder or slurry form. When the inorganic non-stick material is added in a slurry state, mixing the inorganic non-stick material and polyethylene glycol (0.1-20%) according to a proportion and ball-milling to obtain powder; adding the powder obtained by ball milling into an aqueous solvent (at least one of water, ethanol, methanol and the like), adding a proper amount of auxiliary agents (such as a dispersing agent, a defoaming agent and the like), and uniformly stirring to obtain slurry, wherein the concentration of the slurry is 1-70%, preferably 25-50%.
Typically, but not limitatively, the slurry concentration (mass proportion of inorganic non-stick material in the slurry) may be, for example, 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, etc.
As shown in fig. 1, the embodiment of the present application also provides a cooking utensil, which comprises a vessel 1, wherein the surface of the vessel 1 is provided with a non-stick layer 2, the non-stick layer 2 comprises a base coat layer 20 coated on the surface of the vessel 1, and the composition of the base coat layer 20 comprises a non-stick coating, an inorganic non-stick material and a substance containing reactive groups; the inorganic non-stick material comprises inorganic porous material and/or self-lubricating material, the mass proportion of the inorganic non-stick material in the bottom coating 20 is 1% -20%, so that the durability and the bonding performance of the bottom coating 20 are increased, the surface performance of the bottom coating 20 and the surface performance of the utensil 1 are firmly bonded, the service life of the non-stick layer 2 is prolonged, and the bonding force of the non-stick layer 2 is improved.
Specifically, typically but not by way of limitation, the mass proportion of the inorganic non-stick material in the primer layer 20 can be, for example, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, or the like.
Further, the non-stick layer 2 further comprises a middle coating 22, the middle coating 22 is applied to the side of the base coat layer 20 facing away from the vessel 1, the components of the middle coating 22 comprise a non-stick coating and an inorganic non-stick material, and the middle coating 22 does not directly contact with the vessel 1, so that the coating adopted by the middle coating 22 can not contain substances containing reactive groups, and the material composition of the middle coating 22 can be simplified, thereby simplifying the manufacturing process, saving raw materials and reducing the production cost. Specifically, the coating used for the middle coating 22 may be an existing non-stick coating; or the mixture of the existing non-stick coating and inorganic non-stick material; as can the primer layer 20.
In one embodiment, the inorganic non-stick material added in the coating is a self-lubricating material; the mass proportion of the self-lubricating material in the bottom coating 20 is 2-5%; and/or the mass proportion of the self-lubricating material in the middle coating layer 22 is 5-8%. Specifically, that is, the undercoat layer 20 and the intermediate coat layer 22 may be arbitrarily selected one satisfying the above range; or most preferably, both the primer layer 20 and the midcoat layer 22 satisfy the above ranges. The mass proportion of the allowed self-lubricating material in the bottom coating 20 is small, so that the phenomenon that the self-lubricating performance of the bottom coating 20 is too high, the binding force between the bottom coating 20 and the vessel 1 is reduced, and the coating is easy to fall off is avoided; the mass proportion of self-lubricating material allowed in the middle coat 22 is large, so that the middle coat 22 has a long-lasting non-stick property, thereby prolonging the service life of the cooking utensil. Illustratively, the mass ratio of the self-lubricating material in the primer layer 20 may be selected as follows: 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%; the mass ratio of the self-lubricating material in the middle coating 22 can be selected as follows: 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, etc.
In another embodiment, the inorganic non-stick material added in the coating is an inorganic porous material; the mass ratio of the inorganic porous material in the bottom coating 20 is 5-15%; and/or the mass ratio of the inorganic porous material in the intermediate coating layer 22 is 5-10%. Specifically, that is, the undercoat layer 20 and the intermediate coat layer 22 may be arbitrarily selected one satisfying the above range; or most preferably, both the primer layer 20 and the midcoat layer 22 satisfy the above ranges. The greater mass fraction of inorganic porous material allowed in the primer layer 20 and the lesser mass fraction of inorganic porous material allowed in the midcoat layer 22 provide a more durable non-stick property of the primer layer 20 than the midcoat layer 22, thereby extending the useful life of the cooking utensil. Illustratively, the mass ratio of the inorganic porous material in the undercoat layer 20 may be selected as follows: 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5% or 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, etc.; the mass ratio of the inorganic porous material in the intermediate coating layer 22 can be selected as follows: 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, or 10%, etc.
In another embodiment, the inorganic non-stick material added in the coating comprises a self-lubricating material and an inorganic porous material, wherein the mass ratio of the self-lubricating material in the inorganic non-stick material is 20-50%, and the mass ratio of the inorganic porous material in the inorganic non-stick material is 50-80%. The mass proportion of the inorganic non-stick material in the bottom coating 20 is 5-15%; and/or the mass ratio of the inorganic porous material in the intermediate coating layer 22 is 5-10%; specifically, that is, the undercoat layer 20 and the intermediate coat layer 22 may be arbitrarily selected one satisfying the above range; or most preferably, both the primer layer 20 and the midcoat layer 22 satisfy the above ranges. The inorganic non-stick material in the non-stick layer 2 simultaneously comprises a self-lubricating material and an inorganic porous material, so that the coating has the properties of the inorganic porous material and the self-lubricating material simultaneously, and the non-stick effect of the coating is improved; the content of the inorganic porous material is not less than that of the self-lubricating material, so that the phenomenon that the bonding force between the coating and the utensil 1 or between two adjacent coatings formed by the coating is reduced due to overhigh self-lubricating performance of the coating is prevented, the coatings are easy to fall off, and the non-stick service life of the cooking utensil is influenced; the mass ratio of the self-lubricating material is not less than 20%, so that the self-lubricating material and the inorganic porous material jointly play a non-stick role, and the influence of oil stains or impurities on the non-stick performance in the use process is reduced. The greater mass proportion of inorganic non-stick material allowed in the primer coating 20 and the lesser mass proportion of inorganic non-stick material allowed in the midcoat 22 provide the primer coating 20 with more sustained non-stick properties than the midcoat 22, thereby extending the useful life of the cooking utensil, and provide the primer coating 20 with sustained non-stick properties than the midcoat 22, thereby extending the useful life of the cooking utensil.
Further, the non-stick paint may be a fluorine-containing paint, the non-stick layer 2 further includes a top coat 24, the top coat 24 is applied to a side of the middle coat 22 away from the base coat 20 to form a non-stick surface of the non-stick layer 2, and the top coat 24 is formed by applying the fluorine-containing paint. As the fluorine-containing coating has higher non-stick performance and film-forming performance, the non-stick performance of the inorganic non-stick material is slightly inferior to that of the fluorine-containing coating and the film-forming performance is poorer; the non-stick layer 2 of the cooking utensil adopts the fluorine-containing paint to form the top coating 24, so that the non-stick effect of the cooking utensil at the initial use stage can be optimal, and the non-stick layer 2 can form a smooth and flat surface. The non-stick layer 2 is formed by the base coat 20 and/or the intermediate coat 22 by the coating, so that the cooking utensil has a durable non-stick effect. It will be appreciated that the non-stick layer 2 may also not include the top coat 24, such that the midcoat 22 or the base coat 20 directly forms the non-stick surface of the non-stick layer 2.
Specifically, in the initial stage of use of the cooking utensil, the top coating 24 has a non-stick effect, so that the non-stick performance of the cooking utensil is optimal; with the increasing use time, the top coating 24 is abraded or falls off to reduce the non-stick property to a certain extent or completely disappear, and then the intermediate coating 22 or the base coating 20 containing the inorganic non-stick material is exposed, so that the inorganic non-stick material can exert the non-stick effect, and the non-stick life of the non-stick layer 2 is prolonged.
Further, the thickness of the non-stick layer 2 is 30 μm to 45 μm, and the thickness of the non-stick layer 2 may be selected as follows: 30 μm, 33 μm, 38 μm, 42 μm, 45 μm, and the like. Within the thickness range, the non-stick layer 2 can be ensured to completely cover the utensil 1, the non-stick layer 2 has better hardness and higher non-stick performance, and the non-stick layer 2 can also have better appearance and good construction performance.
Specifically, the fluorine-containing coating material used in the examples of the present application may be of a commonly known type, such as commercially available products, or may be prepared by itself by a method known to those skilled in the art. For example, EZ-3700-6901-20A, EZ-3700-9501-20A, EZ-1900-6902-20A, EZ-1900-9501-20A, EZ-1900-6X01-20A, EZ-1900-9502-20A provided by Dajin fluorine coating company, or 465G-83300, 455K-09500, 465G-83270, 456K-09273, 459G-06190, 459K-09190 and the like provided by Kemu chemical company can be used.
Wherein, the formula of the fluorine-containing coating can be referred as follows:
the coating comprises, by weight, 15-50 parts of polytetrafluoroethylene resin (or derivative resin thereof such as PFA), 1-5 parts of pigment, 1-10 parts of filler, 0-10 parts of binder, 1-0 part of auxiliary agent (dispersing agent, emulsifier, stabilizer, defoamer, wetting agent and the like), and 10-30 parts of solvent, wherein specific types of raw materials such as pigment, filler, binder and the like are not particularly limited, and reference can be made to the prior art.
The coating that this application embodiment provided uses the construction mode that forms cooking utensil in the cooking utensil can refer to as follows:
(a) dispersing the coating;
(b) pretreating a vessel;
(c) spraying a coating;
(d) and sintering the composite coating to form the non-stick layer 2.
Mixing a non-stick coating, an inorganic non-stick material and a substance containing reactive groups, placing the mixture on a dispersion machine for rolling dispersion, and selecting proper dispersion conditions according to requirements; for example, the dispersion is carried out at 30 to 50rpm for 40min, and then filtered through a 100 to 200 mesh screen.
The step (b) comprises the steps of pretreating the vessel, and then preheating the pretreated vessel at the preheating temperature of about 30 ℃.
In the step (c), the base coat and the middle coat or the base coat, the middle coat and the top coat are sprayed in sequence according to the requirement, the content of the inorganic non-stick material and/or the substance containing the reactive group in the coating used in each layer can be the same or different, in order to further increase the non-stick effect, the content of the inorganic non-stick material and/or the substance containing the reactive group in the coating used in each layer is preferably different, and the coating in each layer can be dispersed respectively, for example, the coating used in the base coat contains the inorganic non-stick material and the substance containing the reactive group at the same time, the coating used in the middle coat only contains the inorganic non-stick material and the substance containing the reactive group without the top coat, and the coating used in the middle coat is a common fluorine-.
The step (c) specifically comprises: spraying a bottom coating, namely uniformly spraying the coating on the surface of the vessel by using an air spray gun, wherein the atomization pressure is 0.1-0.4 Mpa, the film thickness is 15-30 mu m, and then drying for 6-12min at 80-120 ℃; spraying a middle coating, uniformly spraying the coating on the surface of the vessel by using an air spray gun, wherein the atomization pressure is 0.1-0.4 Mpa, the film thickness is 8-20 mu m, and then drying for 4-8min at the temperature of 60-80 ℃; and (3) spraying a surface coating, namely uniformly spraying the coating on the surface of the vessel by using an air spray gun, wherein the atomization pressure is 0.1-0.4 Mpa, and the film thickness is 10-25 mu m.
And (d) sintering the cooking utensil sprayed with the coating in a sintering furnace, keeping the temperature at 60-100 ℃ for 3-6 min, and then heating to 380-450 ℃ for sintering for 4-8 min.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (18)
1. A coating comprising a non-stick coating, characterized in that the coating further comprises an inorganic non-stick material and a substance containing reactive groups;
the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass ratio of the inorganic non-stick material in the coating is 1-20%.
2. The coating material according to claim 1, wherein the mass ratio of the reactive group-containing substance in the coating material is 0.5% to 5%.
3. The paint according to claim 1, wherein the inorganic non-stick material comprises a self-lubricating material, and the mass proportion of the self-lubricating material in the paint is 1-10%.
4. The coating according to claim 1, wherein the inorganic non-stick material comprises an inorganic porous material, and the mass ratio of the inorganic porous material in the coating is 1-20%.
5. The coating according to claim 1, wherein the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, and the mass proportion of the inorganic non-stick material in the coating is 1-15%.
6. The paint according to claim 5, characterized in that the mass proportion of the self-lubricating material in the inorganic non-stick material is 20-50% and the mass proportion of the inorganic porous material is 50-80%.
7. The coating of claim 1 wherein said inorganic non-stick material has a particle size of 300 to 2000 mesh.
8. The coating according to any one of claims 1 to 7, wherein the inorganic porous material is one or more of diatomaceous earth, bentonite, or zeolite mixed in any proportion.
9. The coating according to any one of claims 1 to 7, wherein the self-lubricating material is one or more of graphite, graphite fluoride or molybdenum disulfide mixed in any proportion.
10. A coating according to any one of claims 1 to 7, characterised in that the substance containing reactive groups is a compound or mixture containing hydroxyl or carboxyl groups.
11. The coating according to claim 10, wherein the reactive group-containing substance is one or more of an organosilane, an adhesion promoter or melamine acrylate mixed at any ratio.
12. Cooking utensil comprising a vessel (1), the surface of the vessel (1) being provided with a non-stick layer (2), the non-stick layer (2) comprising a primer layer (20) applied to the surface of the vessel (1), characterized in that the composition of the primer layer (20) comprises a non-stick coating, an inorganic non-stick material and a substance containing reactive groups;
the inorganic non-stick material comprises an inorganic porous material and/or a self-lubricating material, and the mass proportion of the inorganic non-stick material in the base coat is 1-20%.
13. The cooking appliance according to claim 12, wherein the non-stick layer (2) further comprises a middle coat (22), the middle coat (22) being applied to the side of the base coat (20) facing away from the vessel (1), the composition of the middle coat (22) comprising a non-stick paint and an inorganic non-stick material.
14. The cooking appliance according to claim 13, wherein the inorganic non-stick material is a self-lubricating material;
the mass proportion of the self-lubricating material in the bottom coating (20) is 2-5%; and/or
The mass proportion of the self-lubricating material in the middle coating (22) is 5% -8%.
15. The cooking appliance of claim 13, wherein the inorganic non-stick material is an inorganic porous material;
the mass ratio of the inorganic porous material in the bottom coating (20) is 5-15%; and/or
The mass proportion of the inorganic porous material in the intermediate coating (22) is 5-10%.
16. The cooking utensil of claim 13 wherein the inorganic non-stick material comprises a self-lubricating material and an inorganic porous material, wherein the mass ratio of the self-lubricating material to the inorganic non-stick material is 20-50%, and the mass ratio of the inorganic porous material is 50-80%;
the mass proportion of the inorganic non-stick material in the bottom coating (20) is 5-15%; and/or
The mass proportion of the inorganic porous material in the intermediate coating (22) is 5-10%.
17. The cooking appliance according to claim 13, wherein the non-stick coating is a fluorine-containing coating, the non-stick layer (2) further comprising a top coat layer (24), the top coat layer (24) being applied to the side of the middle coat layer (22) facing away from the base coat layer (20), the top coat layer (24) being applied with a fluorine-containing coating.
18. The cooking appliance according to claim 17, the thickness of the non-stick layer (2) being between 30 μ ι η and 45 μ ι η.
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| CN201910580415 | 2019-06-28 | ||
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| CN2019111962116 | 2019-11-29 | ||
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| CN202010597711.7A Active CN112137421B (en) | 2019-06-28 | 2020-06-28 | Paint and cooking utensil |
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| CN114605914A (en) * | 2022-03-29 | 2022-06-10 | 武汉苏泊尔炊具有限公司 | Modified ceramic coating, modified base oil, modified surface oil, composite coating and cooker |
| TWI806700B (en) * | 2021-12-20 | 2023-06-21 | 大陸商凱燦貿易(深圳)有限公司 | Cooking utensil and method for manufacturing thereof |
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| CN113171006A (en) * | 2021-04-13 | 2021-07-27 | 杭州九阳小家电有限公司 | Non-stick pan and manufacturing method thereof |
| CN113307494A (en) * | 2021-05-13 | 2021-08-27 | 章益鹏 | Ceramic coating added with porous material and preparation method thereof |
| CN114634724A (en) * | 2022-03-29 | 2022-06-17 | 武汉苏泊尔炊具有限公司 | Modified spray material, non-stick material and cooker |
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| Publication number | Publication date |
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| CN112137421B (en) | 2024-03-15 |
| CN112137426A (en) | 2020-12-29 |
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