CN115926500A - Water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating and preparation method thereof - Google Patents
Water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating and preparation method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000000576 coating method Methods 0.000 title claims abstract description 66
- 239000011248 coating agent Substances 0.000 title claims abstract description 61
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000003973 paint Substances 0.000 claims abstract description 57
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 239000002270 dispersing agent Substances 0.000 claims abstract description 27
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 24
- 239000008367 deionised water Substances 0.000 claims abstract description 21
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 13
- 239000013078 crystal Substances 0.000 claims abstract description 11
- 239000006184 cosolvent Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 140
- 238000002156 mixing Methods 0.000 claims description 61
- 239000000463 material Substances 0.000 claims description 42
- 239000011347 resin Substances 0.000 claims description 27
- 229920005989 resin Polymers 0.000 claims description 27
- 238000005507 spraying Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 10
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- 238000009736 wetting Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000003472 neutralizing effect Effects 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 240000002853 Nelumbo nucifera Species 0.000 abstract description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 abstract description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009967 tasteless effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical group CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 4
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical group [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 231100000252 nontoxic Toxicity 0.000 description 4
- 230000003000 nontoxic effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 241000320380 Silybum Species 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coatings, in particular to a water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating and a preparation method thereof, wherein the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following raw materials in parts by weight: 50-70 parts of water-based nano tree, 18-23 parts of color paste, 12-18 parts of crystal whisker silicon, 0.4-0.8 part of water-based dispersant, 1-1.5 parts of water-based anti-graffiti auxiliary agent, 0.5-0.9 part of flatting agent, 0.4-0.8 part of defoaming agent, 3-5 parts of cosolvent, 0.2-0.8 part of neutralizer and 6-16 parts of deionized water. The obtained paint film has good insulativity, good hydrophobicity, lotus flower effect, safety, environmental protection and no toxicity, and has ultrahigh heat resistance, the heat resistance temperature reaches above 800 ℃, and the coating keeps tasteless and smokeless under the condition of high temperature or combustion.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating and a preparation method thereof.
Background
The vehicle-mounted power battery has a wide application prospect, and in order to enhance the safety performance of the vehicle-mounted power battery, a battery cover plate or a battery shell is usually arranged on the vehicle-mounted power battery, and a high-temperature-resistant insulating coating is coated on the battery cover plate to form a high-temperature-resistant insulating coating. The battery accident takes place, when producing high temperature, and the insulating coating of coating high temperature resistance can protect the battery apron well, reduces the possibility that the battery apron takes place to warp, effectively keeps the structural stability of battery apron, reduces the diffusion velocity and the diffusion area of high temperature high fever to promote the on-vehicle power battery's of car security performance.
However, the existing insulating coating has the following technical defects, and cannot well meet the application requirements of the vehicle-mounted power battery:
1. the coating dibutyltin seriously exceeds the standard or contains a large amount of harmful substances such as benzene, dimethylbenzene and other organic solvents, and has poor environmental protection property.
2. The heat resistance is insufficient, the coating does not meet the requirement of ultrahigh heat resistance, and when the temperature reaches 400 ℃, a paint film is completely damaged, so that the structural stability of the battery cover cannot be well maintained.
3. Mainly takes the organic silicon coating as a main material, can generate smoke and odor under the condition that the temperature exceeds 400 ℃ or the combustion is carried out by open fire, and has lower safety.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating, the obtained paint film has good insulativity and good hydrophobicity, achieves the lotus flower effect, is safe, environment-friendly and non-toxic, has ultrahigh heat resistance, has the heat resistance temperature of over 800 ℃, and can keep tasteless and smokeless under the condition of high temperature or combustion.
The purpose of the invention is realized by the following technical scheme: a water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following raw materials in parts by weight:
the aqueous dispersant is a Pick BYK-190 dispersant.
The water-based anti-doodling auxiliary agent is a digao 5100 anti-doodling auxiliary agent.
The leveling agent is an AMORSO-328 leveling agent produced by Shanghai Jiechuan industry Co.
The defoaming agent is a siloco Silok-4075 defoaming agent.
The cosolvent is ethylene glycol monobutyl ether.
The neutralizer is a hamming DMAE ammonia neutralizer.
The water-based nano resin comprises the following raw materials in parts by weight:
the catalyst is a mixture of formic acid and acetic acid in a mass ratio of 2-4:1-2.
The wetting leveling agent is a digao 4100 leveling agent.
The water-based nano resin disclosed by the invention adopts silica sol and alumina sol as main materials, and various raw materials are cooperated with each other, so that the heat resistance is excellent, the heat resistance temperature can reach more than 1000 ℃, and the heat resistance of the insulating coating disclosed by the invention can be effectively improved.
The color paste comprises the following raw materials in parts by weight:
the auxiliary agent is a hamming steud 299 aqueous thickener.
The toner is copper-chromium black powder.
The dispersant is a Pico BYK-190 dispersant.
The self-grinding color paste has good thermal stability and good heat resistance, the heat resistance temperature reaches 800 ℃, and the heat resistance of the insulating coating can be effectively improved.
The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: 1) Preparing the water-based nano resin for later use; 2) Preparing color paste for later use; 3) Uniformly stirring and mixing the water-based nano resin and the cosolvent to obtain a primary mixed material; 4) Uniformly mixing the water-based dispersing agent, the defoaming agent, the flatting agent and part of deionized water, then adding the mixture into the primary mixed material, and uniformly stirring and mixing the mixture to obtain a secondary mixed material; 5) Adding the water-based anti-graffiti auxiliary agent, the color paste and the crystal whisker silicon into the secondary mixed material, and uniformly stirring and mixing to obtain a third mixed material; 6) And adding the neutralizing agent and the rest deionized water into the third mixed material, and uniformly stirring and mixing to obtain the insulating coating.
The rotating speed of stirring and mixing in the step 3) is 300-400r/min, and the stirring time is 13-17min.
The rotating speed of stirring and mixing in the step 4) is 450-500r/min, and the stirring time is 12-14min.
The rotating speed of stirring and mixing in the step 5) is 550-600r/min, and the stirring time is 25-35min.
The rotating speed of stirring and mixing in the step 6) is 550-650r/min, and the stirring time is 20-30min.
The preparation of the water-based nano resin comprises the following steps: adding silica sol, alumina sol, deionized water and a catalyst into a reaction kettle, and stirring for reaction fully, wherein the stirring speed is 500-800r/min, and the stirring time is 10-30min; then adding methyl trimethoxysilane, phenyl trimethoxysilane and tetraethoxysilane, and fully stirring for reaction at the stirring speed of 500-800r/min for 2-3h; and cooling, adding the wetting and leveling agent, stirring and mixing uniformly at the stirring speed of 300-400r/min for 5-10min to obtain the water-based nano resin.
The color paste preparation method comprises the following steps: adding deionized water into a stirring kettle, adding a dispersing agent while stirring, and stirring and mixing uniformly at a stirring speed of 80-120r/min for 5-10min; adding the toner and the crystal whisker silicon while stirring, and stirring and mixing uniformly at the stirring speed of 600-1000r/min for 10-30min; adding the auxiliary agent while stirring, stirring and mixing uniformly, wherein the stirring speed is 500-1000r/min, and the stirring time is 10-30min, so as to obtain a semi-finished product color paste; and adding the semi-finished color paste into a grinder, and grinding the fineness of the semi-finished color paste to be below 10 mu m to obtain the color paste.
The application method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: and uniformly spraying the insulating paint on the surface of the base material to form a coating, and baking the base material sprayed with the coating in an environment at 180-230 ℃ for 30-40min to obtain a dry paint film.
In the process of high-temperature baking of the insulating coating, the raw material components are subjected to crosslinking reaction, the color paste, the water-based nano resin and the rest are cooperatively matched with each other, the heat resistance of the insulating coating is further improved, and the formed dry paint film has ultrahigh heat resistance, has no chalking phenomenon at the temperature of over 800 ℃, and cannot be damaged by high temperature.
The method also comprises the following steps of before spraying: stirring and dispersing the insulating paint, and then filtering by adopting a #100-150 stainless steel filter screen; when spraying: the diameter of the spray nozzle of the spray gun is 1.5-2mm, and the spraying pressure is 0.2-0.3MPa.
The thickness of the dried paint film after spraying is controlled between 50 and 80 mu m.
The invention has the beneficial effects that:
according to the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating, an obtained paint film has good insulating property and good surface hydrophobicity, so that moisture cannot permeate a coating, and a lotus flower effect is achieved; the existing common heat-resistant coating is mainly applied to organic silicon coatings, and can generate smoke and odor under the condition of burning at the temperature of over 400 ℃ or open fire, the coating does not contain harmful substances of organic solvents such as dibutyltin, benzene, xylene and the like, all reagents are water-based reagents, the obtained insulating coating belongs to water-based coatings, compared with the existing insulating coatings, the VOC is extremely low, the coating is safe, environment-friendly and non-toxic, and the coating is odorless and smokeless under the condition of high temperature or burning; the heat resistance of the existing insulating paint after film forming can only reach 400 ℃, but the insulating paint has ultrahigh heat resistance, the heat resistance temperature reaches more than 800 ℃, the requirement of a vehicle-mounted power battery can be well met, and the safety of the vehicle-mounted power battery is improved.
The preparation method disclosed by the invention is simple to operate and suitable for large-scale popularization, a paint film formed by the produced insulating paint has good insulativity and good hydrophobicity, the lotus flower effect is achieved, the paint is safe, environment-friendly and non-toxic, the paint has ultrahigh heat resistance, the heat resistance temperature reaches above 800 ℃, and the paint can keep tasteless and smokeless under the condition of high temperature or combustion.
The application method of the insulating coating is simple to operate, the obtained paint film has good insulativity and good hydrophobicity, achieves the lotus flower effect, is safe, environment-friendly and non-toxic, has ultrahigh heat resistance, has the heat resistance temperature of over 800 ℃, and can keep the coating tasteless and smokeless under the condition of high temperature or combustion.
Detailed Description
The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention.
Example 1
A water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following raw materials in parts by weight:
the water-based dispersant is ByK-190 dispersant.
The water-based anti-doodling auxiliary agent is a digao 5100 anti-doodling auxiliary agent.
The leveling agent is an AMORSO-328 leveling agent produced by Shanghai Jiechuan industry Co. The defoaming agent is a siloco Silok-4075 defoaming agent.
The cosolvent is ethylene glycol monobutyl ether.
The neutralizer is a HAIMENS DMAE ammonia neutralizer.
The water-based nano resin comprises the following raw materials in parts by weight:
the catalyst is a mixture of formic acid and acetic acid in a mass ratio of 2:1.
The wetting leveling agent is a digao 4100 leveling agent.
The color paste comprises the following raw materials in parts by weight:
the auxiliary agent is a Hamming Silybum 299 aqueous thickener.
The toner is copper-chromium black powder.
The dispersant is a Pico BYK-190 dispersant.
The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: 1) Preparing the water-based nano resin for later use; 2) Preparing color paste for later use; 3) Uniformly stirring and mixing the water-based nano resin and the cosolvent to obtain a primary mixed material; 4) Uniformly mixing the water-based dispersing agent, the defoaming agent, the flatting agent and part of deionized water, then adding the mixture into the primary mixed material, and uniformly stirring and mixing the mixture to obtain a secondary mixed material; 5) Adding the water-based anti-graffiti auxiliary agent, the color paste and the crystal whisker silicon into the secondary mixed material, and uniformly stirring and mixing to obtain a third mixed material; 6) And adding the neutralizing agent and the rest deionized water into the third mixed material, and uniformly stirring and mixing to obtain the insulating coating.
The rotating speed of stirring and mixing in the step 3) is 300r/min, and the stirring time is 13min.
The rotating speed of stirring and mixing in the step 4) is 450r/min, and the stirring time is 12min.
The rotating speed of stirring and mixing in the step 5) is 550r/min, and the stirring time is 25min.
The rotating speed of stirring and mixing in the step 6) is 550r/min, and the stirring time is 20min.
The preparation of the water-based nano resin comprises the following steps: adding silica sol, alumina sol, deionized water and a catalyst into a reaction kettle, and stirring for reaction fully, wherein the stirring speed is 500r/min, and the stirring time is 10min; then adding methyl trimethoxysilane, phenyl trimethoxysilane and tetraethoxysilane, and fully stirring for 2 hours at the stirring speed of 500 r/min; and cooling, adding the wetting and leveling agent, stirring and mixing uniformly at the stirring speed of 300r/min for 5min to obtain the water-based nano resin.
The color paste preparation method comprises the following steps: adding deionized water into a stirring kettle, adding a dispersing agent while stirring, and stirring and mixing uniformly at a stirring speed of 80r/min for 5min; adding toner and crystal whisker silicon while stirring, stirring and mixing uniformly, wherein the stirring speed is 600r/min, and the stirring time is 10min; adding the auxiliary agent while stirring, stirring and mixing uniformly at the stirring speed of 500r/min for 10min to obtain a semi-finished product color paste; and adding the semi-finished color paste into a grinder, and grinding the fineness of the semi-finished color paste to be below 10um to obtain the color paste.
The application method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: and uniformly spraying the insulating paint on the surface of the base material to form a coating, and baking the base material sprayed with the coating in an environment at 180 ℃ for 40min to obtain a dry paint film.
The method also comprises the following steps of before spraying: stirring and dispersing the insulating paint, and then filtering by adopting a #100 stainless steel filter screen; when spraying: the diameter of the nozzle of the spray gun is 1.5mm, and the spraying pressure is 0.2MPa.
The thickness of the dried paint film after spraying is controlled at 50 μm.
Example 2
A water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following raw materials in parts by weight:
the aqueous dispersant is a Pick BYK-190 dispersant.
The water-based anti-doodling auxiliary agent is a digao 5100 anti-doodling auxiliary agent.
The leveling agent is an AMORSO-328 leveling agent produced by Shanghai Jieshuan industries, ltd. The defoaming agent is a siloco Silok-4075 defoaming agent.
The cosolvent is ethylene glycol monobutyl ether.
The neutralizer is a hamming DMAE ammonia neutralizer.
The water-based nano resin comprises the following raw materials in parts by weight:
the catalyst is a mixture of formic acid and acetic acid in a mass ratio of 1:1.
The wetting leveling agent is a digao 4100 leveling agent.
The color paste comprises the following raw materials in parts by weight:
the auxiliary agent is a Hamming Silybum 299 aqueous thickener.
The toner is copper-chromium black powder.
The dispersant is a Pico BYK-190 dispersant.
The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: 1) Preparing the water-based nano resin for later use; 2) Preparing color paste for later use; 3) Uniformly stirring and mixing the water-based nano resin and the cosolvent to obtain a primary mixed material; 4) Uniformly mixing the water-based dispersing agent, the defoaming agent, the flatting agent and part of deionized water, then adding the mixture into the primary mixed material, and uniformly stirring and mixing the mixture to obtain a secondary mixed material; 5) Adding the water-based anti-graffiti auxiliary agent, the color paste and the crystal whisker silicon into the secondary mixed material, and uniformly stirring and mixing to obtain a third mixed material; 6) And adding the neutralizing agent and the rest deionized water into the third mixed material, and uniformly stirring and mixing to obtain the insulating coating.
The rotating speed of stirring and mixing in the step 3) is 350r/min, and the stirring time is 15min.
The rotating speed of stirring and mixing in the step 4) is 470r/min, and the stirring time is 13min.
The rotating speed of stirring and mixing in the step 5) is 580r/min, and the stirring time is 30min.
The rotating speed of stirring and mixing in the step 6) is 600r/min, and the stirring time is 25min.
The preparation of the water-based nano resin comprises the following steps: adding silica sol, alumina sol, deionized water and a catalyst into a reaction kettle, and stirring for sufficient reaction, wherein the stirring speed is 650r/min, and the stirring time is 20min; then adding methyl trimethoxysilane, phenyl trimethoxysilane and tetraethoxysilane, and fully stirring and reacting at the stirring speed of 650r/min for 2.5 hours; and cooling, adding the wetting and leveling agent, stirring and mixing uniformly at the stirring speed of 350r/min for 8min to obtain the water-based nano resin.
The color paste preparation method comprises the following steps: adding deionized water into a stirring kettle, adding a dispersing agent while stirring, and stirring and mixing uniformly at a stirring speed of 100r/min for 8min; adding the toner and the crystal whisker silicon while stirring, and stirring and mixing uniformly at the stirring speed of 800r/min for 20min; adding the auxiliary agent while stirring, stirring and mixing uniformly, wherein the stirring speed is 750r/min, and the stirring time is 20min, so as to obtain a semi-finished product color paste; and adding the semi-finished color paste into a grinder, and grinding the fineness of the semi-finished color paste to be below 10um to obtain the color paste.
The application method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: and uniformly spraying the insulating paint on the surface of the base material to form a coating, and baking the base material sprayed with the coating in an environment at 200 ℃ for 35min to obtain a dry paint film.
The method also comprises the following steps of before spraying: stirring and dispersing the insulating paint, and then filtering by adopting a #150 stainless steel filter screen; when spraying: the diameter of the nozzle of the spray gun is 1.8mm, and the spraying pressure is 0.25MPa.
The thickness of the dried paint film after spraying is controlled to be 65 mu m.
Example 3
A water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following raw materials in parts by weight:
the aqueous dispersant is a Pick BYK-190 dispersant.
The water-based anti-doodling auxiliary agent is a digao 5100 anti-doodling auxiliary agent.
The leveling agent is an AMORSO-328 leveling agent produced by Shanghai Jieshuan industries, ltd.
The defoaming agent is a siloco Silok-4075 defoaming agent.
The cosolvent is ethylene glycol monobutyl ether.
The neutralizer is a HAIMENS DMAE ammonia neutralizer.
The water-based nano resin comprises the following raw materials in parts by weight:
the catalyst is a mixture of formic acid and acetic acid in a mass ratio of 3:2.
The wetting leveling agent is a digao 4100 leveling agent.
The color paste comprises the following raw materials in parts by weight:
the auxiliary agent is a Hamming Silybum 299 aqueous thickener.
The toner is copper-chromium black powder.
The dispersant is a Pico BYK-190 dispersant.
The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: 1) Preparing the water-based nano resin for later use; 2) Preparing color paste for later use; 3) Uniformly stirring and mixing the water-based nano resin and the cosolvent to obtain a primary mixed material; 4) Uniformly mixing the water-based dispersing agent, the defoaming agent, the flatting agent and part of deionized water, then adding the mixture into the primary mixed material, and uniformly stirring and mixing the mixture to obtain a secondary mixed material; 5) Adding the water-based anti-doodling auxiliary agent, the color paste and the crystal whisker silicon into the secondary mixed material, and uniformly stirring and mixing to obtain a tertiary mixed material; 6) And adding the neutralizing agent and the rest deionized water into the third mixed material, and stirring and mixing uniformly to obtain the insulating paint.
The rotating speed of stirring and mixing in the step 3) is 400r/min, and the stirring time is 17min.
The rotating speed of stirring and mixing in the step 4) is 500r/min, and the stirring time is 14min.
The rotating speed of stirring and mixing in the step 5) is 600r/min, and the stirring time is 35min.
The rotating speed of stirring and mixing in the step 6) is 650r/min, and the stirring time is 30min.
The preparation of the water-based nano resin comprises the following steps: adding silica sol, alumina sol, deionized water and a catalyst into a reaction kettle, and stirring for reaction fully, wherein the stirring speed is 800r/min, and the stirring time is 30min; then adding methyl trimethoxysilane, phenyl trimethoxysilane and tetraethoxysilane, and fully stirring for reaction at the stirring speed of 800r/min for 3 hours; and cooling, adding the wetting and leveling agent, stirring and mixing uniformly at the stirring speed of 400r/min for 10min to obtain the water-based nano resin.
The color paste preparation method comprises the following steps: adding deionized water into a stirring kettle, adding a dispersing agent while stirring, and stirring and mixing uniformly at a stirring speed of 120r/min for 10min; adding toner and crystal whisker silicon while stirring, stirring and mixing uniformly, wherein the stirring speed is 1000r/min, and the stirring time is 30min; adding the auxiliary agent while stirring, stirring and mixing uniformly, wherein the stirring speed is 1000r/min, and the stirring time is 30min, so as to obtain a semi-finished product color paste; and adding the semi-finished color paste into a grinder, and grinding the fineness of the semi-finished color paste to be below 10um to obtain the color paste.
The application method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating comprises the following steps: and uniformly spraying the insulating paint on the surface of the base material to form a coating, and baking the base material sprayed with the coating in an environment at 230 ℃ for 40min to obtain a dry paint film.
The method also comprises the following steps of before spraying: stirring and dispersing the insulating paint, and then filtering by adopting a #150 stainless steel filter screen; when spraying: the diameter of the nozzle of the spray gun is 2mm, and the spraying pressure is 0.3MPa.
The thickness of the dried paint film after spraying is controlled to be 80 mu m.
The dry paint films obtained in examples 2 to 3 were subjected to the following property tests and the test results are reported in the following table:
and (3) testing items:
1. and (3) testing the adhesive force: A3M adhesive tape with the adhesive layer thickness of 1mm and the width of 10mm is attached to the surface of a dry paint film, an eraser is used for forcibly wiping an attaching area back and forth, the attaching length is 3cm, then the adhesive tape is quickly torn off at an angle of 90 degrees, the test is repeated for 5 times in the same attaching area, no paint is dropped in the attaching area, and no color is dropped, so that the product is qualified.
2. And (3) corrosion resistance detection: when the paint is respectively put into acid gas environments of high-concentration hydrogen sulfide, hydrogen dioxide and nitrogen dioxide for 30 days, the surface color of the dry paint film is not changed, and the paint is qualified without corrosion.
3. And (3) salt spray testing: and (3) placing the dry paint film into 5% neutral saline to be soaked for 500 hours, wherein the surface of the dry paint film has no bubbles, and the paint is qualified if no paint is dropped.
4. Electrolyte resistance test: and (3) soaking the dry paint film in the battery electrolyte for 24 hours, wherein the paint film has no bubbles, no surface change and no color difference, and is qualified.
5. And (3) testing heat resistance: and placing the dry paint film in an environment of 800 ℃ for 24 hours, wherein the dry paint film has no bubbles, no cracks and no pulverization, and is qualified.
6. And (3) insulation testing: applying 3500V voltage to the dry paint film, detecting the current, and observing whether the dry paint film is broken down; and if the current is less than 10mA, the product is qualified.
The detection result shows that the paint film obtained by the invention has ultrahigh heat resistance, the heat resistance temperature reaches above 800 ℃, the paint film still keeps complete, has no bubbles, cracks and chalking phenomena under the condition of high temperature or combustion, and the paint film obtained by the insulating paint has good adhesion performance, excellent acid corrosion resistance, electrolyte resistance and salt resistance, good insulating performance and excellent high-voltage electric shock resistance.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (10)
1. The water-based high-temperature-resistant inorganic nano silicon-aluminum insulating paint is characterized in that: the feed comprises the following raw materials in parts by weight:
2. the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating as claimed in claim 1, which is characterized in that: the water-based nano resin comprises the following raw materials in parts by weight:
3. the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating as claimed in claim 2, characterized in that: the catalyst is a mixture of formic acid and acetic acid in a mass ratio of 2-4:1-2.
4. The water-based high-temperature-resistant inorganic nano silicon-aluminum insulating paint as claimed in claim 1, characterized in that: the color paste comprises the following raw materials in parts by weight:
5. the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating as claimed in claim 4, wherein: the auxiliary agent is a thickening agent.
6. The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps: the method comprises the following steps: 1) Preparing the water-based nano resin for later use; 2) Preparing color paste for later use; 3) Uniformly stirring and mixing the water-based nano resin and the cosolvent to obtain a primary mixed material; 4) Uniformly mixing the water-based dispersing agent, the defoaming agent, the flatting agent and part of deionized water, then adding the mixture into the primary mixed material, and uniformly stirring and mixing the mixture to obtain a secondary mixed material; 5) Adding the water-based anti-graffiti auxiliary agent, the color paste and the crystal whisker silicon into the secondary mixed material, and uniformly stirring and mixing to obtain a third mixed material; 6) And adding the neutralizing agent and the rest deionized water into the third mixed material, and uniformly stirring and mixing to obtain the insulating coating.
7. The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating according to claim 7, characterized in that: the preparation of the water-based nano resin comprises the following steps: adding silica sol, alumina sol, deionized water and a catalyst into a reaction kettle, and stirring for full reaction; then adding methyl trimethoxysilane, phenyl trimethoxysilane and tetraethoxysilane, and stirring for full reaction; and cooling, adding the wetting and leveling agent, and stirring and mixing uniformly to obtain the water-based nano resin.
8. The preparation method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating according to claim 7, characterized in that: the color paste preparation method comprises the following steps: adding deionized water into a stirring kettle, adding a dispersing agent while stirring, and stirring and mixing uniformly; adding the toner and the crystal whisker silicon while stirring, and stirring and mixing the mixture evenly; adding the auxiliary agent while stirring, and stirring and mixing uniformly to obtain a semi-finished product color paste; and adding the semi-finished color paste into a grinder, and grinding the fineness of the semi-finished color paste to be below 10um to obtain the color paste.
9. The use method of the water-based high-temperature-resistant inorganic nano silicon aluminum insulating coating as claimed in any one of claims 1 to 8, characterized in that: the method comprises the following steps: uniformly spraying the insulating paint on the surface of the base material to form a coating, and baking the base material sprayed with the coating in an environment at 180-230 ℃ for 30-40min to obtain a dry paint film.
10. The use method of the water-based high-temperature-resistant inorganic nano silicon-aluminum insulating coating according to claim 9, characterized in that: the method also comprises the following paint preparation steps before spraying: stirring and dispersing the insulating paint, and then filtering by adopting a #100-150 stainless steel filter screen; when spraying: the diameter of the spray nozzle of the spray gun is 1.5-2mm, and the spraying pressure is 0.2-0.3MPa.
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