CN109943187A - A kind of composite heat resistance salt tolerant enamel - Google Patents
A kind of composite heat resistance salt tolerant enamel Download PDFInfo
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- CN109943187A CN109943187A CN201910124845.4A CN201910124845A CN109943187A CN 109943187 A CN109943187 A CN 109943187A CN 201910124845 A CN201910124845 A CN 201910124845A CN 109943187 A CN109943187 A CN 109943187A
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Abstract
The invention discloses a kind of composite heat resistance salt tolerant enamels, belong to technical field of paint preparation.The present invention impregnates sepiolite and oxalic acid, is conducive to the uniform protection to enameled wire, adds a small amount of nanometer iron powder and silane coupling agent; it is stably dispersed in nanometer iron powder in system; Organic silicon protective film and small molecule alcohol are generated, achievees the effect that heat dissipation, reaches the protection to enameled wire；Flake aluminum is pre-processed with glycerol and titanate coupling agent; aluminium powder surface can be protected not to be etched in the process of processing and using; also the cohesive force of aluminium powder and macromolecule viscosity component such as epoxy resin, phenolic resin can be improved; while raising gloss of film is spent; anti-permeability performance is improved well, and ammonium fluoride, urea, ferrous sulfate, zinc nitrate etc. are raw material, produce the ingredients such as zinc ferrite; its histocompatbility can be improved, and assign the performance that system inhales wave, resistance to punching.The present invention solves the problems, such as that the hot punching performance and salt spray resistance of common enamel at present be not good enough.
Description
Technical field
The invention discloses a kind of composite heat resistance salt tolerant enamels, belong to technical field of paint preparation.
Background technique
With the raising of economy and living standards of the people, wire enamel is in military and people's livelihood field demand all rapid
Increase.As a kind of coating that electrical insulation capability is excellent, wire enamel is the essential material of electrical equipment, and quality is excellent
The bad economic and technical norms and service life for being directly related to electrical equipment.Since electrical equipment and electrical is always towards small in size, power
Big trend development, coil can generate very big heat in the process of running, therefore want to the temperature classification of insulating materials
Ask higher and higher, and the development of nuclear power and cosmic space technology more proposes harsh high temperature resistant requirement to winding wire, together
When, the mechanization of winding and high speed process need winding wire to have good surface property.Enameled wire is one of winding wire
Principal item is made of conductor and insulating layer two, after the annealed softening of bare wire, using multiple japanning, is baked.But it wants
It produces and not only met the requirements of the standard, but also meet the product of customer requirement and be not easy to, by raw material quality, technological parameter is raw for it
Equipment is produced, the factors such as environment influence, and therefore, the mass property of various enameled wires is different, but all has mechanical performance, chemistry
Performance, electrical property, the big performance of hot property four.Wire enamel belongs to one kind of electric insulation paint, mainly by base-material, curing agent, wave
Material composition is sent out, pigment, filler, fire retardant etc. can also be added according to demand.Can volatile substance in paint solution according to molten
Solution film forming matter can be divided into solvent and diluent, can reduce the viscosity of film forming matter, convenient for japanning.Diluent cannot dissolve
Filmogen cannot be used alone, and need to dissolve each other with solvent.Toxicity and cost can not only be reduced, volatile substance is also made
Evaporating temperature range broaden, to reduce maximum evaporation speed, be conducive to the good paint film of forming properties.The master of paint solution
It wants ingredient and key factor is binder resin, the performance of resin directly determines the performance and the scope of application of paint.According to tree used
Rouge, wire enamel can be divided into oil paint, epoxy-based lacquers, organic silicon resin paint, acetal paint, poly- cruel paint, poly- ammonia and extremely paint, gather cruel imines
Paint, poly- phthalimide paint, poly- phthalein amine phthalimide paint etc..According to using temperature that wire enamel can be divided into different temperature classifications, and will
>=180 DEG C of insulated paint is known as high temperature-resistant wire lacquer.The enameled wire that polyester wire coating enamel is coated has good attachment
Power, insulating properties and mechanical performance, therefore become the principal item of wire enamel, account for about 50% or so of wire enamel total amount.Mesh
Preceding polyester wire coating enamel, including import paint mainly use dimethyl terephthalate (DMT), ethylene glycol, glycerol, cresols, dimethylbenzene
It is prepared Deng for main raw material(s).Be using the advantages of phenol solvent it is good to the dissolubility of resin, enameled wire coats any surface finish, hold
Easily realize the enameled wire product of good technique index.But a series of problem is also brought using phenol solvent.It is paint first
Enamel quality is unstable, and enameled wire product quality, it may appear that the appearance including paint blacks, the smell is awful, paint solution storage
Phenomena such as muddy afterwards；Product temperature classification is inadequate, and hot punching performance and salt water resistance pin hole performance be not good enough, therefore, develops in recent years
Various enamel kinds.The technology development of enamel is advanced to a certain extent, but it is practical also more to be applied to production
More work will be done.
Summary of the invention
The technical problems to be solved by the invention: not good enough for the hot punching performance and salt spray resistance of current common enamel
The problem of, a kind of composite heat resistance salt tolerant enamel is provided.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of composite heat resistance salt tolerant enamel, according to the mass fraction, including following component: 3 ~ 7 parts of Nano-meter SiO_2s2, 2 ~ 5 parts of lubrications
Agent, 2 ~ 5 parts of plasticizer, 40 ~ 60 parts of water, further includes: 25 ~ 45 parts of enamel base-materials, 12 ~ 18 parts of compound auxiliary materials.
The preparation method of the enamel base-material, includes the following steps:
(1) in 40 ~ 55 DEG C, 1:12 ~ 20 take sepiolite, oxalic acid solution to be mixed in mass ratio, stand, are passed through saturated steam
Pressure is controlled up to 2.7 ~ 3.3MPa, pressure maintaining is handled, and pressure release obtains pretreatment sepiolite, is taken pretreatment sepiolite microwave drying, is obtained dry
Dry sepiolite takes dry sepiolite, and heat preservation roasting is cooling, obtains modified meerschaum；
(2) according to parts by weight, 20 ~ 40 parts of reagent As, 1 ~ 4 part of film forming agent, 8 ~ 15 parts of pre-treating aluminium powders, 4 ~ 8 parts of Nanoscale Irons are taken
Powder, 12 ~ 20 parts of modified meerschaums, 4 ~ 8 parts of silane coupling agent KH-560 first take reagent A, film forming agent, modified meerschaum, silane even
Join agent KH-560 mixing, in 45 ~ 55 DEG C, constant temperature stirring obtains mixed liquor, takes mixed liquor that nanometer iron powder, pre-treating aluminium powder is added
Mixing, high-speed stirred, in 55 ~ 70 DEG C of rotary evaporations to get enamel base-material.
Film forming agent in the step (2): 7 ~ 10:2 in mass ratio takes polyvinyl butyral, polyvinylpyrrolidone to stir
Mixing is mixed to get film forming agent.
Pre-treating aluminium powder in the step (2): according to parts by weight, take 10 ~ 20 parts of flake aluminums, 1 ~ 4 part three it is different
Stearyl isopropyl titanate, 6 ~ 10 parts of glycerol, 40 ~ 60 parts of ethanol solutions first take flake aluminum and glycerol to be mixed, are added
Isopropyl triisostearoyltitanate and ethanol solution, in 35 ~ 50 DEG C of ultrasonic disperses to get pre-treating aluminium powder.
Reagent A in the step (2): 7 ~ 14:3:1 in mass ratio take dehydrated alcohol, isopropanol, glycerol mixing to get
Reagent A.
The preparation of the compound auxiliary material: 3:1:1:15 ~ 25 take ammonium fluoride, urea, ferrous sulfate, water mixed in mass ratio
It closes, stirs, sealing, in 150 ~ 170 DEG C, constant temperature is stirred to react, centrifugation, takes centrifugation object to be washed with dehydrated alcohol, in 90 ~ 100 DEG C
Item is dry, obtains dried object, takes dried object 3:1:20 in mass ratio ~ 40 that auxiliary agent, reagent B mixing is added, and ultrasonic immersing must impregnate
Material, takes impregnant to filter, and collects filter cake and is washed with water, in -20 DEG C of freeze-dryings to get compound auxiliary material.
The reagent B: 6 ~ 10:1 in mass ratio takes dopamine solution, NH4Cl mixes to get reagent B.
The auxiliary agent: 5 ~ 8:2 in mass ratio takes phenolic resin, epoxy resin mixing to get auxiliary agent.
The plasticizer: 3 ~ 7:1 in mass ratio takes triethyl citrate, diethylenetriamine mixing to get plasticizer.
The lubricant: 5:1 ~ 3 take microcrystalline wax, magnesium stearate mixing to get lubricant in mass ratio.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention impregnates sepiolite and oxalic acid, makes oxalic acid root portion enter sepiolite by ion exchange, logical steam adds
Pressure processing, so that inside is uniformly dispersed, microwave drying makes moisture sub-resonance be homogenized internal composition, and roasting may make oxalate to turn
Turn to carbon monoxide, carbon dioxide gas, carbon monoxide can also play the role of improving fuel efficiency so that sepiolite inner pore by into
One step is got through, and the reunion of sepiolite ingredient is broken, and is conducive to the uniform protection to enameled wire, is added a small amount of nanometer iron powder and silane
Coupling agent, wherein the compatible of inorganic nanometer iron powder and organic solvent reagent A and other organic principles can be improved in silane coupling agent
Property, it is stably dispersed in nanometer iron powder in system, in addition, in use, being coated on the silane coupled of nanometer iron powder surface
Agent ingredient can be contacted with moisture in air and be hydrolyzed, and generate Organic silicon protective film and small molecule alcohol, the molten boiling of small molecule alcohol
Point is lower, can quickly volatilize, and achievees the effect that heat dissipation, and nanometer iron powder activity is high, after contacting with oxygen in air, can quickly send out
Raw oxidation reaction, generates oxidation film, collectively forms protective film with silane coupling agent and film forming agent, provides the work of similar " passivation "
With, the function and effect of heat-resisting ageing-resisting and salt tolerant are improved, thus, reach the protection to enameled wire；
(2) present invention flake aluminum is pre-processed with glycerol and titanate coupling agent, can protect aluminium powder surface processing and
It is not etched in use process, the cohesive force of aluminium powder and macromolecule viscosity component such as epoxy resin, phenolic resin also can be improved, benefit
Bridge formation is formed between macromolecule viscosity component and aluminium powder with titanate coupling agent, the film layer after solidifying is made to form solid entirety
Film, and flake aluminum can be in close evenly distributed paint film, while improving gloss of film and spending, so that corrosive medium can not be straight
Connect and internally permeated by outside, anti-permeability performance can be improved well, salt spray resistance after use and the performances such as corrosion-resistant into
One step is significantly improved；
(3) present invention produces the ingredients such as zinc ferrite, herein mistake with ammonium fluoride, urea, ferrous sulfate, zinc nitrate etc. for raw material
Cheng Zhong, produces good inorganic soft magnetic materials, and during the subsequent filling to this enamel system, can be well
Imparting system inhales the performance of wave, resistance to punching, and can keep from heat the aggravation corroded well, and improve impact resistance stability,
Also, under the immersion of dopamine, aoxidized under the action of oxygen in air, polymerization crosslinking occurs, its group can be effectively improved
Compatibility is knitted, the function and effect between its component are coordinated, meanwhile, tunable film forming agent provides multiple cross-linked effect, reinforces enamel
The stabilization filming function of base-material, and then further reinforce the heat-resisting salt spray resistance protection to enameled wire.
Specific embodiment
Reagent A: 7 ~ 14:3:1 in mass ratio takes dehydrated alcohol, isopropanol, glycerol mixing to get reagent A.
Reagent B: 6 ~ 10:1 in mass ratio to take concentration be the dopamine solution of 2g/L, NH4Cl mixes to get reagent B.
Lubricant: 5:1 ~ 3 take microcrystalline wax, magnesium stearate mixing to get lubricant in mass ratio.
Film forming agent: 7 ~ 10:2 in mass ratio takes polyvinyl butyral, polyvinylpyrrolidone to be stirred to get film forming
Agent.
Plasticizer: 3 ~ 7:1 in mass ratio takes triethyl citrate, diethylenetriamine mixing to get plasticizer.
Auxiliary agent: 5 ~ 8:2 in mass ratio takes phenolic resin, epoxy resin mixing to get auxiliary agent.
Pre-treating aluminium powder: according to parts by weight, flake aluminum, 1 ~ 4 part of three isostearoyl of 10 ~ 20 parts of 40 meshes of mistake are taken
The ethanol solution that base isopropyl titanate, 6 ~ 10 parts of glycerol, 40 ~ 60 parts of volume fractions are 70%, first takes flake aluminum and glycerol in appearance
Device mixing stirs 35 ~ 60min with 400 ~ 700r/min, isopropyl triisostearoyltitanate and ethanol solution is added, moves to super
Sound separating apparatus, in 35 ~ 50 DEG C, under the conditions of 55 ~ 60kHz supersonic frequency, 2 ~ 4h of ultrasonic disperse is to get pre-treating aluminium powder.
The preparation method of enamel base-material, includes the following steps:
(1) in 40 ~ 55 DEG C, the oxalic acid solution that 1:12 ~ 20 take sepiolite in mass ratio, mass fraction is 12% is mixed in reaction kettle,
25 ~ 45min is stirred with 400 ~ 700r/min, 1 ~ 3h is stored at room temperature, pours into steam-explosion jar, be passed through in saturated steam to steam-explosion jar
Pressure is up to 2.7 ~ 3.3MPa, after pressure maintaining handles 1 ~ 3min, opens steam-explosion jar outlet valve, and pressure release to normal pressure obtains pretreatment sepiolite,
Pretreatment sepiolite is taken to obtain dry sepiolite with the dry 6 ~ 12min of 400W power microwave in microwave dryer, take dry Hai Pao
Stone moves into tube furnace, roasts 3 ~ 5h in 400 ~ 650 DEG C of heat preservations, cools to room temperature with the furnace, obtain modified meerschaum；
(2) according to parts by weight, 20 ~ 40 parts of reagent As, 1 ~ 4 part of film forming agent, 8 ~ 15 parts of pre-treating aluminium powders, 4 ~ 8 parts of Nanoscale Irons are taken
Powder, 12 ~ 20 parts of modified meerschaums, 4 ~ 8 parts of silane coupling agent KH-560 first take reagent A, film forming agent, modified meerschaum, silane even
Join agent KH-560 in reaction kettle, in 45 ~ 55 DEG C, 30 ~ 55min is stirred with 400 ~ 700r/min constant temperature, mixed liquor is obtained, takes mixed liquor
Nanometer iron powder is added, the mixing of pre-treating aluminium powder is revolved after 2000 ~ 3000r/min high-speed stirred, 15 ~ 25min in 55 ~ 70 DEG C
Turn to be evaporated to original volume 25 ~ 45% are to get enamel base-material.
The preparation of compound auxiliary material: 3:1:1:15 ~ 25 take ammonium fluoride, urea, ferrous sulfate, water in reaction kettle in mass ratio
Mixing, with 400 ~ 700r/min, 35 ~ 60min of magnetic agitation, obtains mixed liquor, takes mixed liquor 8 ~ 15:5 in mass ratio that quality point is added
Number is mixed for 15% zinc nitrate solution in polytetrafluoroethyllining lining stainless steel cauldron, sealing, in 150 ~ 170 DEG C, with
After 600 ~ 900r/min constant temperature is stirred to react 7 ~ 10h, centrifuge is moved to, 7 ~ 14min is centrifuged with 3000 ~ 4000r/min, takes centrifugation
After object washs 2 ~ 4 times with dehydrated alcohol, it is transferred to vacuum oven, it is dry to constant weight in 90 ~ 100 DEG C of items, dried object is obtained, drying is taken
Auxiliary agent, reagent B mixing is added in object 3:1:20 in mass ratio ~ 40, under the conditions of supersonic frequency is 55 ~ 60kHz, ultrasonic immersing 20 ~
40min obtains impregnant, and impregnant is taken to filter, after collecting filter cake washing 2 ~ 4 times, in -20 DEG C of freeze-dryings to get compound auxiliary
Material.
A kind of composite heat resistance salt tolerant enamel, according to the mass fraction, including following component: 3 ~ 7 parts of Nano-meter SiO_2s2, 2 ~ 5 parts
Lubricant, 2 ~ 5 parts of plasticizer, 40 ~ 60 parts of water, 25 ~ 45 parts of enamel base-materials, 12 ~ 18 parts of compound auxiliary materials.
Embodiment 1
Reagent A: 7:3:1 in mass ratio takes dehydrated alcohol, isopropanol, glycerol mixing to get reagent A.
Reagent B: 6:1 in mass ratio to take concentration be the dopamine solution of 2g/L, NH4Cl mixes to get reagent B.
Lubricant: 5:1 in mass ratio takes microcrystalline wax, magnesium stearate mixing to get lubricant.
Film forming agent: 7:2 in mass ratio takes polyvinyl butyral, polyvinylpyrrolidone to be stirred to get film forming agent.
Plasticizer: 3:1 in mass ratio takes triethyl citrate, diethylenetriamine mixing to get plasticizer.
Auxiliary agent: 5:2 in mass ratio takes phenolic resin, epoxy resin mixing to get auxiliary agent.
Pre-treating aluminium powder: according to parts by weight, flake aluminum, the 1 part of three isostearoyl base titanium of 10 parts of 40 meshes of mistake are taken
The ethanol solution that isopropyl propionate, 6 parts of glycerol, 40 parts of volume fractions are 70%, first takes flake aluminum and glycerol to mix in container, with
400r/min stirs 35min, and isopropyl triisostearoyltitanate and ethanol solution is added, moves to ultrasonic disperse instrument, in 40 DEG C,
Under the conditions of 55kHz supersonic frequency, ultrasonic disperse 2h is to get pre-treating aluminium powder.
The preparation method of enamel base-material, includes the following steps:
(1) in 40 DEG C, the oxalic acid solution that 1:12 in mass ratio takes sepiolite, mass fraction is 12% is mixed in reaction kettle, with
400r/min stirs 25min, is stored at room temperature 1h, pours into steam-explosion jar, is passed through saturated steam to steam explosion pressure inside the tank and reaches
2.7MPa after pressure maintaining handles 1min, opens steam-explosion jar outlet valve, and pressure release to normal pressure obtains pretreatment sepiolite, takes pretreatment Hai Pao
Stone is obtained dry sepiolite, dry sepiolite is taken to move into tube furnace in microwave dryer with the dry 6min of 400W power microwave, in
400 DEG C of heat preservations roast 3h, cool to room temperature with the furnace, obtain modified meerschaum；
(2) according to parts by weight, take 20 parts of reagent As, 1 part of film forming agent, 8 parts of pre-treating aluminium powders, 4 parts of nanometer iron powders, 12 parts change
Property sepiolite, 4 parts of silane coupling agent KH-560, first take reagent A, film forming agent, modified meerschaum, silane coupling agent KH-560 in anti-
Kettle is answered, in 45 DEG C, 30min is stirred with 400r/min constant temperature, obtains mixed liquor, takes mixed liquor that nanometer iron powder, pretreatment aluminium powder is added
Material mixing, after 2000r/min high-speed stirred 15min, in 55 DEG C of rotary evaporations to original volume 25% to get enamel base-material.
The preparation of compound auxiliary material: 3:1:1:15 in mass ratio takes ammonium fluoride, urea, ferrous sulfate, water mixed in reaction kettle
It closes, with 400r/min magnetic agitation 35min, obtains mixed liquor, take mixed liquor 8:5 in mass ratio that the nitre that mass fraction is 15% is added
Sour zinc solution is mixed in polytetrafluoroethyllining lining stainless steel cauldron, sealing, in 150 DEG C, with the stirring of 600r/min constant temperature
After reacting 7h, centrifuge is moved to, 7min is centrifuged with 3000r/min, after taking centrifugation object to wash 2 times with dehydrated alcohol, is transferred to vacuum
Drying box obtains dried object in 90 DEG C of items dryings to constant weight, takes dried object 3:1:20 in mass ratio that auxiliary agent, reagent B mixing is added,
Under the conditions of supersonic frequency is 55kHz, ultrasonic immersing 20min obtains impregnant, impregnant is taken to filter, and collects filter cake and washes 4 times
Afterwards, in -20 DEG C of freeze-dryings to get compound auxiliary material.
A kind of composite heat resistance salt tolerant enamel, according to the mass fraction, including following component: 3 parts of Nano-meter SiO_2s2, 2 parts of lubrications
Agent, 2 parts of plasticizer, 40 parts of water, 25 parts of enamel base-materials, 12 parts of compound auxiliary materials.
Embodiment 2
Reagent A: 14:3:1 in mass ratio takes dehydrated alcohol, isopropanol, glycerol mixing to get reagent A.
Reagent B: 10:1 in mass ratio to take concentration be the dopamine solution of 2g/L, NH4Cl mixes to get reagent B.
Lubricant: 5:3 in mass ratio takes microcrystalline wax, magnesium stearate mixing to get lubricant.
Film forming agent: 10:2 in mass ratio takes polyvinyl butyral, polyvinylpyrrolidone to be stirred to get film forming
Agent.
Plasticizer: 7:1 in mass ratio takes triethyl citrate, diethylenetriamine mixing to get plasticizer.
Auxiliary agent: 8:2 in mass ratio takes phenolic resin, epoxy resin mixing to get auxiliary agent.
Pre-treating aluminium powder: according to parts by weight, flake aluminum, the 4 part of three isostearoyl base titanium of 20 parts of 40 meshes of mistake are taken
The ethanol solution that isopropyl propionate, 10 parts of glycerol, 60 parts of volume fractions are 70%, first takes flake aluminum and glycerol to mix in container, with
700r/min stirs 60min, and isopropyl triisostearoyltitanate and ethanol solution is added, moves to ultrasonic disperse instrument, in 45 DEG C,
Under the conditions of 60kHz supersonic frequency, ultrasonic disperse 4h is to get pre-treating aluminium powder.
The preparation method of enamel base-material, includes the following steps:
(1) in 55 DEG C, the oxalic acid solution that 1:20 in mass ratio takes sepiolite, mass fraction is 12% is mixed in reaction kettle, with
700r/min stirs 45min, is stored at room temperature 3h, pours into steam-explosion jar, is passed through saturated steam to steam explosion pressure inside the tank and reaches
3.3MPa after pressure maintaining handles 3min, opens steam-explosion jar outlet valve, and pressure release to normal pressure obtains pretreatment sepiolite, takes pretreatment Hai Pao
Stone is obtained dry sepiolite, dry sepiolite is taken to move into tube furnace in microwave dryer with the dry 12min of 400W power microwave, in
650 DEG C of heat preservations roast 5h, cool to room temperature with the furnace, obtain modified meerschaum；
(2) according to parts by weight, take 40 parts of reagent As, 4 parts of film forming agents, 15 parts of pre-treating aluminium powders, 8 parts of nanometer iron powders, 20 parts change
Property sepiolite, 8 parts of silane coupling agent KH-560, first take reagent A, film forming agent, modified meerschaum, silane coupling agent KH-560 in anti-
Kettle is answered, in 55 DEG C, 55min is stirred with 700r/min constant temperature, obtains mixed liquor, takes mixed liquor that nanometer iron powder, pretreatment aluminium powder is added
Material mixing, after 3000r/min high-speed stirred 25min, in 70 DEG C of rotary evaporations to original volume 45% to get enamel base-material.
The preparation of compound auxiliary material: 3:1:1:25 in mass ratio takes ammonium fluoride, urea, ferrous sulfate, water mixed in reaction kettle
It closes, with 700r/min magnetic agitation 60min, obtains mixed liquor, take mixed liquor 15:5 in mass ratio that the nitre that mass fraction is 15% is added
Sour zinc solution is mixed in polytetrafluoroethyllining lining stainless steel cauldron, sealing, in 170 DEG C, with the stirring of 900r/min constant temperature
After reacting 10h, centrifuge is moved to, 14min is centrifuged with 4000r/min, after taking centrifugation object to wash 4 times with dehydrated alcohol, is transferred to true
Empty drying box, it is dry to constant weight in 100 DEG C of items, dried object is obtained, takes dried object 3:1:40 in mass ratio that auxiliary agent, reagent B is added mixed
It closes, under the conditions of supersonic frequency is 60kHz, ultrasonic immersing 40min obtains impregnant, impregnant is taken to filter, and collects filter cake washing 2
After secondary, in -20 DEG C of freeze-dryings to get compound auxiliary material.
A kind of composite heat resistance salt tolerant enamel, according to the mass fraction, including following component: 7 parts of Nano-meter SiO_2s2, 5 parts of lubrications
Agent, 5 parts of plasticizer, 60 parts of water, 45 parts of enamel base-materials, 18 parts of compound auxiliary materials.
Embodiment 3
Reagent A: 11:3:1 in mass ratio takes dehydrated alcohol, isopropanol, glycerol mixing to get reagent A.
Reagent B: 8:1 in mass ratio to take concentration be the dopamine solution of 2g/L, NH4Cl mixes to get reagent B.
Lubricant: 5:2 in mass ratio takes microcrystalline wax, magnesium stearate mixing to get lubricant.
Film forming agent: 9:2 in mass ratio takes polyvinyl butyral, polyvinylpyrrolidone to be stirred to get film forming agent.
Plasticizer: 5:1 in mass ratio takes triethyl citrate, diethylenetriamine mixing to get plasticizer.
Auxiliary agent: 7:2 in mass ratio takes phenolic resin, epoxy resin mixing to get auxiliary agent.
Pre-treating aluminium powder: according to parts by weight, flake aluminum, the 3 part of three isostearoyl base titanium of 15 parts of 40 meshes of mistake are taken
The ethanol solution that isopropyl propionate, 8 parts of glycerol, 50 parts of volume fractions are 70%, first takes flake aluminum and glycerol to mix in container, with
600r/min stirs 50min, and isopropyl triisostearoyltitanate and ethanol solution is added, moves to ultrasonic disperse instrument, in 50 DEG C,
Under the conditions of 57kHz supersonic frequency, ultrasonic disperse 3h is to get pre-treating aluminium powder.
The preparation method of enamel base-material, includes the following steps:
(1) in 45 DEG C, the oxalic acid solution that 1:15 in mass ratio takes sepiolite, mass fraction is 12% is mixed in reaction kettle, with
500r/min stirs 35min, is stored at room temperature 2h, pours into steam-explosion jar, is passed through saturated steam to steam explosion pressure inside the tank and reaches
3.2MPa after pressure maintaining handles 2min, opens steam-explosion jar outlet valve, and pressure release to normal pressure obtains pretreatment sepiolite, takes pretreatment Hai Pao
Stone is obtained dry sepiolite, dry sepiolite is taken to move into tube furnace in microwave dryer with the dry 8min of 400W power microwave, in
550 DEG C of heat preservations roast 4h, cool to room temperature with the furnace, obtain modified meerschaum；
(2) according to parts by weight, take 30 parts of reagent As, 3 parts of film forming agents, 11 parts of pre-treating aluminium powders, 6 parts of nanometer iron powders, 15 parts change
Property sepiolite, 6 parts of silane coupling agent KH-560, first take reagent A, film forming agent, modified meerschaum, silane coupling agent KH-560 in anti-
Kettle is answered, in 50 DEG C, 45min is stirred with 500r/min constant temperature, obtains mixed liquor, takes mixed liquor that nanometer iron powder, pretreatment aluminium powder is added
Material mixing, after 2500r/min high-speed stirred 20min, in 60 DEG C of rotary evaporations to original volume 35% to get enamel base-material.
The preparation of compound auxiliary material: 3:1:1:23 in mass ratio takes ammonium fluoride, urea, ferrous sulfate, water mixed in reaction kettle
It closes, with 500r/min magnetic agitation 50min, obtains mixed liquor, take mixed liquor 9:5 in mass ratio that the nitre that mass fraction is 15% is added
Sour zinc solution is mixed in polytetrafluoroethyllining lining stainless steel cauldron, sealing, in 160 DEG C, with the stirring of 700r/min constant temperature
After reacting 9h, centrifuge is moved to, 12min is centrifuged with 3500r/min, after taking centrifugation object to wash 3 times with dehydrated alcohol, is transferred to vacuum
Drying box obtains dried object in 95 DEG C of items dryings to constant weight, takes dried object 3:1:30 in mass ratio that auxiliary agent, reagent B mixing is added,
Under the conditions of supersonic frequency is 57kHz, ultrasonic immersing 30min obtains impregnant, impregnant is taken to filter, and collects filter cake and washes 3 times
Afterwards, in -20 DEG C of freeze-dryings to get compound auxiliary material.
A kind of composite heat resistance salt tolerant enamel, according to the mass fraction, including following component: 4 parts of Nano-meter SiO_2s2, 3 parts of lubrications
Agent, 3 parts of plasticizer, 50 parts of water, 35 parts of enamel base-materials, 16 parts of compound auxiliary materials.
Comparative example 1: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking enamel base-material.
Comparative example 2: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking compound auxiliary material.
Comparative example 3: the composite heat resistance salt tolerant enamel of Shanghai City company production.
The composite heat resistance salt tolerant enamel that above-described embodiment is obtained with comparative example is detected, cut through temperature uses
Softening breakdown test instrument is detected；Breakdown voltage test is detected using voltage breakdown experiment apparatus；By embodiment and comparison
The composite heat resistance salt tolerant enamel that example obtains coats the enameled wire of line footpath 0.150mm, and enameled wire outer diameter is 0.180mm, stretches 3%
Or 5% or and bending under the conditions of carry out salt water pinhole test, obtain that the results are shown in Table 1.
Table 1:
In summary, composite heat resistance salt tolerant enamel effect of the invention is more preferable as can be seen from Table 1, is worth of widely use, with
The upper preferred mode only of the invention, is not intended to limit the invention, all within the spirits and principles of the present invention, is made
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of composite heat resistance salt tolerant enamel, according to the mass fraction, including following component: 3 ~ 7 parts of Nano-meter SiO_2s2, 2 ~ 5 parts of lubrications
Agent, 2 ~ 5 parts of plasticizer, 40 ~ 60 parts of water, which is characterized in that further include: 25 ~ 45 parts of enamel base-materials, 12 ~ 18 parts of compound auxiliary
Material.
2. a kind of composite heat resistance salt tolerant enamel according to claim 1, which is characterized in that the preparation of the enamel base-material
Method includes the following steps:
(1) in 40 ~ 55 DEG C, 1:12 ~ 20 take sepiolite, oxalic acid solution to be mixed in mass ratio, stand, are passed through saturated steam
Pressure is controlled up to 2.7 ~ 3.3MPa, pressure maintaining is handled, and pressure release obtains pretreatment sepiolite, is taken pretreatment sepiolite microwave drying, is obtained dry
Dry sepiolite takes dry sepiolite, and heat preservation roasting is cooling, obtains modified meerschaum；
(2) according to parts by weight, 20 ~ 40 parts of reagent As, 1 ~ 4 part of film forming agent, 8 ~ 15 parts of pre-treating aluminium powders, 4 ~ 8 parts of Nanoscale Irons are taken
Powder, 12 ~ 20 parts of modified meerschaums, 4 ~ 8 parts of silane coupling agent KH-560 first take reagent A, film forming agent, modified meerschaum, silane even
Join agent KH-560 mixing, in 45 ~ 55 DEG C, constant temperature stirring obtains mixed liquor, takes mixed liquor that nanometer iron powder, pre-treating aluminium powder is added
Mixing, high-speed stirred, in 55 ~ 70 DEG C of rotary evaporations to get enamel base-material.
3. a kind of composite heat resistance salt tolerant enamel according to claim 2, which is characterized in that the film forming in the step (2)
Agent: 7 ~ 10:2 in mass ratio takes polyvinyl butyral, polyvinylpyrrolidone to be stirred to get film forming agent.
4. a kind of composite heat resistance salt tolerant enamel according to claim 2, which is characterized in that the pre- place in the step (2)
Manage aluminium powder material: according to parts by weight, take 10 ~ 20 parts of flake aluminums, 1 ~ 4 part of isopropyl triisostearoyltitanate, 6 ~ 10 parts it is sweet
Oil, 40 ~ 60 parts of ethanol solutions first take flake aluminum and glycerol to be mixed, isopropyl triisostearoyltitanate and second are added
Alcoholic solution, in 35 ~ 50 DEG C of ultrasonic disperses to get pre-treating aluminium powder.
5. a kind of composite heat resistance salt tolerant enamel according to claim 2, which is characterized in that the reagent in the step (2)
A: 7 ~ 14:3:1 in mass ratio takes dehydrated alcohol, isopropanol, glycerol mixing to get reagent A.
6. a kind of composite heat resistance salt tolerant enamel according to claim 1, which is characterized in that the system of the compound auxiliary material
Standby: 3:1:1:15 ~ 25 take ammonium fluoride, urea, ferrous sulfate, water mixing in mass ratio, stir, sealing, permanent in 150 ~ 170 DEG C
Temperature is stirred to react, centrifugation, is taken centrifugation object to be washed with dehydrated alcohol, in 90 ~ 100 DEG C of dryings, is obtained dried object, take dried object by quality
Auxiliary agent, reagent B mixing is added than 3:1:20 ~ 40, ultrasonic immersing obtains impregnant, impregnant is taken to filter, filter cake washing is collected, in-
20 DEG C of freeze-dryings are to get compound auxiliary material.
7. a kind of composite heat resistance salt tolerant enamel according to claim 6, which is characterized in that the reagent B: in mass ratio 6 ~
10:1 takes dopamine solution, NH4Cl mixes to get reagent B.
8. a kind of composite heat resistance salt tolerant enamel according to claim 6, which is characterized in that the auxiliary agent: in mass ratio 5 ~
8:2 takes phenolic resin, epoxy resin mixing to get auxiliary agent.
9. a kind of composite heat resistance salt tolerant enamel according to claim 1, which is characterized in that the plasticizer: in mass ratio 3
~ 7:1 takes triethyl citrate, diethylenetriamine mixing to get plasticizer.
10. a kind of composite heat resistance salt tolerant enamel according to claim 1, which is characterized in that the lubricant: in mass ratio
5:1 ~ 3 take microcrystalline wax, magnesium stearate mixing to get lubricant.
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| US20030203991A1 (en) * | 2002-04-30 | 2003-10-30 | Hydromer, Inc. | Coating composition for multiple hydrophilic applications |
| CN106675401A (en) * | 2017-01-07 | 2017-05-17 | 丹阳市沃德立电工材料有限公司 | Corona-resistant wire enamel and preparation method thereof |
| CN107275107A (en) * | 2017-05-16 | 2017-10-20 | 江苏大学 | A kind of combination electrode material and Preparation method and use |
| CN107573760A (en) * | 2017-10-19 | 2018-01-12 | 周夕和 | One kind is raised one's hat humidity-preserving type white board pen ink |
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