CN112961575A - Aqueous bi-component epoxy coating on surface of battery cell shell and preparation method thereof - Google Patents
Aqueous bi-component epoxy coating on surface of battery cell shell and preparation method thereof Download PDFInfo
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- 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
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C09D7/20—Diluents or solvents
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention relates to a waterborne two-component epoxy coating on the surface of a battery cell shell and a preparation method thereof, wherein the waterborne two-component epoxy coating comprises a first component and a second component which are matched according to the weight percentage, and the first component comprises the following components: 13.5 to 18 percent of deionized water, 0.5 to 1.0 percent of dispersant, 0.1 to 0.2 percent of first defoaming agent, 0.12 to 0.25 percent of second defoaming agent, 0.3 to 0.6 percent of flatting agent, 0.1 to 0.2 percent of bactericide, 0.5 to 1.5 percent of flash rust inhibitor, 0.1 to 0.5 percent of scratch-resistant and wear-resistant agent, 0.2 to 0.5 percent of organic modified bentonite, 0.1 to 0.5 percent of pH regulator, 7 to 16.5 percent of flame retardant, 0.15 to 0.25 percent of thickener, 3.0 to 5.0 percent of titanium pigment, 4.0 to 6.0 percent of phthalocyanine blue, 5.0 to 10.0 percent of modified barium sulfate, 4.0 to 9.0 percent of zinc-free environment-friendly type antirust pigment and 35 to 55 percent of aqueous epoxy curing agent; the second component includes: 97.3 to 98.4 percent of waterborne epoxy resin, 1.5 to 2.5 percent of adhesion promoter and 0.1 to 0.2 percent of second defoaming agent. The invention can well solve the problems of coating insulativity, wear resistance, corrosion resistance, flame retardance, poor adhesion of aluminum materials and the like.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a waterborne two-component epoxy coating on the surface of a battery cell shell and a preparation method thereof.
Background
With the continuous improvement and development of power battery technology, the application scale of new energy vehicles is greatly expanded, power batteries are mainly assembled into a battery pack on the new energy vehicles to form an electric energy storage system, the power batteries are mainly assembled by a power battery module, a Battery Management System (BMS), a thermal management system, an electrical system, a structural system and the like through a grouping process, several or more than ten modules are connected in series inside one battery pack, and the modules are formed by connecting electric cores in series and parallel through collecting electrodes. Currently, the shell protection of a single battery cell usually adopts a mode of wrapping a blue film so as to achieve the purposes of insulating from other modules or shells and preventing the battery from being attached or scratched by foreign matters.
The wrapping blue film on the market usually takes a polyester film as a base material, and acrylic glue is coated on the base material for being adhered to the outer parts of various aluminum shells, steel shells, soft packages, polymer single batteries or battery packs. The thickness of the battery cell insulation tape is generally 0.015-0.2mm, and in practical application, the fact that the battery cell insulation tape is stuck on a battery cell shell to wrap a blue magic tape is easy to damage due to the fact that the battery cell insulation tape is stuck on a hard object, and the battery cell insulation tape can cause insulation failure of the battery cell due to the fact that the battery cell insulation tape is stuck on the hard object, so that scrapping or safety accidents occur.
Therefore, the combination of the characteristics of the shell material and the insufficient wrapping blue film stimulates the thinking trend of replacing the wrapping blue film with the organic coating. There are currently several explorations in conjunction with the latest environmental standards: powder coating; ② UV photocureable coating; ③ solvent-free coating; fourthly, water paint; the powder coating has the advantages of no VOC emission and excellent performance, but has the biggest problems that the curing problem is too high, and the battery core shell is easy to deform under high temperature; the UV photocureable coating has very high curing speed and is suitable for efficient production line operation, but is mainly used for transparent coating and thin coating at present due to the UV coating curing mode, so that the performance of the UV photocureable coating cannot meet the requirement; the solvent-free coating has good wear resistance, but the coating is too thick at one time, which affects the subsequent assembly of the battery core. The solvent-free polyurea coating has good elasticity and wear resistance, but has poor adhesive force on aluminum materials, can be overcome by coating a primer once, increases the process complexity and influences the production efficiency, can realize self-drying or curing at lower temperature, has controllable film thickness and excellent comprehensive performance;
disclosure of Invention
The invention aims to provide a water-based two-component epoxy coating on the surface of a battery cell shell and a preparation method thereof.
The above object of the present invention is achieved by the following technical solutions:
a bicomponent epoxy coating on the surface of a battery cell shell comprises a first component and a second component which are proportioned according to weight percentage;
the first component includes:
the second component includes:
97.3 to 98.4 percent of waterborne epoxy resin
1.5 to 2.5 percent of adhesion promoter
0.1 to 0.2 percent of second antifoaming agent.
The invention is further configured to: the aqueous bi-component epoxy coating on the surface of the battery cell shell comprises a first component and a second component which are proportioned according to weight percentage;
the first component includes:
16.37 percent of deionized water
0.8 percent of dispersant
0.15 percent of first defoaming agent
0.18 percent of second antifoaming agent
0.45 percent of flatting agent
0.15 percent of bactericide
1.0 percent of flash rust inhibitor
0.3 percent of scratch-resistant and wear-resistant agent
0.35 percent of organic modified bentonite
0.3 percent of pH regulator
11.25 percent of flame retardant
0.2 percent of thickening agent
Titanium dioxide 4.0%
Phthalocyanine blue 5.0%
8.0 percent of modified barium sulfate
Zinc-free environment-friendly anti-rust pigment 6.5%
45% of water-based epoxy curing agent;
the second component includes:
98.0 percent of waterborne epoxy resin
2.0 percent of adhesion promoter
0.15 percent of second antifoaming agent.
The invention is further configured to: the mass ratio of the first component to the second component is 7: 1.
The invention is further configured to: the first defoaming agent includes an organically modified polysiloxane, and the second defoaming agent includes an acetylene glycol-based defoaming agent.
The invention is further configured to: the waterborne epoxy curing agent comprises a modified amine waterborne epoxy curing agent.
The invention is further configured to: the thickness of the coating obtained by spraying the aqueous two-component epoxy coating on the surface of the battery cell shell is 120-170 mu m.
The invention is further configured to: the water-based epoxy curing agent is specifically a water solution of modified amine, the scratch-resistant and wear-resistant agent is specifically a polysiloxane dispersion liquid with ultra-large molecular weight, the flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant, and the adhesion promoter is specifically modified epoxy phosphate.
The invention is further configured to: the water-based epoxy resin is prepared by adopting a reverse phase emulsification technology.
A preparation method of a waterborne two-component epoxy coating on the surface of a battery cell shell comprises the following steps:
preparing a first component:
(1) slowly adding the waterborne epoxy curing agent in the formula into a mixing tank, adding the dispersing agent, the flatting agent and the first defoaming agent under the stirring state of 300r/min, and then stirring at the speed of 500r/min for dispersing for 10-30 min;
(2) slowly adding part of deionized water and the flash rust inhibitor under the stirring state of 300r/min, then stirring at the speed of 500r/min, and dispersing for 10-30 min;
(3) slowly adding organic modified bentonite, a flame retardant, titanium dioxide, phthalocyanine blue, modified barium sulfate and a zinc-free environment-friendly antirust pigment under the stirring state of 300r/min, slowly increasing the speed, after the substances are completely soaked, increasing the speed to 1000r/min, stirring for 25-35min, soaking a sealing cover for 4h, after the substances are fully soaked, transferring the substances to a horizontal sand mill to start grinding, starting circulating cooling water, controlling the grinding temperature not to exceed 40 ℃, measuring by a scraper blade fineness meter until the fineness reaches 18-23um, and discharging grinding slurry to a paint mixing tank;
(4) slowly adding bactericide, second defoaming agent, pH regulator under stirring at 300r/min, increasing the speed to 500r/min, dispersing for 15-30min, adjusting the viscosity to 55-65s with deionized water and thickener, filtering with 200 mesh filter cloth, and packaging to obtain the first component;
preparing a second component:
(5) adding slow water-based epoxy resin into a paint mixing tank without water and other impurities, starting stirring to 300r/min, slowly adding the adhesion promoter and the second defoaming agent according to the formula amount, accelerating to 1000r/min, dispersing for 15-30min, and stopping stirring.
(6) Standing for defoaming for 30min, filtering with 200 mesh filter cloth, and packaging to obtain a second component;
(7) when the aqueous two-component epoxy coating needs to be used, the first component prepared in the step (4) and the second component prepared in the step (6) are mixed and stirred uniformly, and the aqueous two-component epoxy coating on the surface of the battery cell shell is obtained.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the water-based epoxy curing agent used in the invention is a water-based dispersion of modified amine, the water-based epoxy resin is prepared by adopting an inverse emulsification technology, the VOC content is low, the finally prepared coating has good decoration, and can be used as a primer-topcoat integrated coating. The flame retardant is a phosphorus-nitrogen halogen-free flame retardant, so that flame spread when the battery is on fire can be effectively prevented, the safety and environment-friendly coefficient is improved, the adhesion promoter is modified epoxy phosphate, the adhesion of the coating film on different base materials such as stainless steel and aluminum materials can be enhanced, and the compactness of the coating film can be improved;
2. the product provided by the invention is a blue electric core shell surface insulation and wear-resistant water-based bi-component epoxy coating, and water is used as a diluent, so that almost no VOC is generated; the coating can meet the requirements of assembly line operation during coating, is convenient to construct, can be forcedly dried at low temperature after being sprayed and can also be naturally dried, a three-dimensional net-shaped structure is formed after being completely cured, the requirements of coatings with high insulativity, high decorativeness, high wear resistance, high adhesive force, high flame retardance and high durability are met, the service life of the coatings can be effectively prolonged, the economic benefit is improved, and the coating is particularly suitable for decorating and protecting low-surface-tension substrates such as aluminum materials, stainless steel and the like.
Detailed Description
The invention discloses a waterborne two-component epoxy coating on the surface of a battery cell shell, which comprises a first component and a second component in percentage by weight as follows:
the first component includes:
the second component includes:
97.3 to 98.4 percent of waterborne epoxy resin
1.5 to 2.5 percent of adhesion promoter
0.1 to 0.2 percent of second antifoaming agent.
The mass ratio of the first component to the second component is 7: 1.
The first defoaming agent includes an organically modified polysiloxane, and the second defoaming agent includes an acetylene glycol-based defoaming agent.
The waterborne epoxy curing agent comprises a modified amine waterborne epoxy curing agent.
The thickness of the coating obtained by spraying the aqueous two-component epoxy coating on the surface of the battery cell shell is 120-170 mu m.
The water-based epoxy curing agent is specifically a water-based dispersion of modified amine, the scratch-resistant and wear-resistant agent is specifically a polysiloxane dispersion with ultra-high molecular weight, the flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant, and the adhesion promoter is specifically modified epoxy phosphate.
The water-based epoxy resin is prepared by adopting a reverse phase emulsification technology.
A preparation method of a waterborne two-component epoxy coating on the surface of a battery cell shell comprises the following steps:
preparing a first component:
(1) slowly adding the waterborne epoxy curing agent in the formula into a mixing tank, adding the dispersing agent, the flatting agent and the first defoaming agent under the stirring state of 300r/min, and then stirring at the speed of 500r/min for dispersing for 10-30 min;
(2) slowly adding part of deionized water and the flash rust inhibitor under the stirring state of 300r/min, then stirring at the speed of 500r/min, and dispersing for 10-30 min;
(3) slowly adding organic modified bentonite, a flame retardant, titanium dioxide, phthalocyanine blue, modified barium sulfate and a zinc-free environment-friendly antirust pigment under the stirring state of 300r/min, slowly increasing the speed, after the substances are completely soaked, increasing the speed to 1000r/min, stirring for 25-35min, soaking a sealing cover for 4h, after the substances are fully soaked, transferring the substances to a horizontal sand mill to start grinding, starting circulating cooling water, controlling the grinding temperature not to exceed 40 ℃, measuring by a scraper blade fineness meter until the fineness reaches 18-23um, and discharging grinding slurry to a paint mixing tank;
(4) slowly adding bactericide, second defoaming agent, pH regulator under stirring at 300r/min, increasing the speed to 500r/min, dispersing for 15-30min, adjusting the viscosity to 55-65s with deionized water and thickener, filtering with 200 mesh filter cloth, and packaging to obtain the first component;
preparing a second component:
(5) adding slow water-based epoxy resin into a paint mixing tank without water and other impurities, starting stirring to 300r/min, slowly adding the adhesion promoter and the second defoaming agent according to the formula amount, accelerating to 1000r/min, dispersing for 15-30min, and stopping stirring.
(6) Standing for defoaming for 30min, filtering with 200 mesh filter cloth, and packaging to obtain a second component;
(7) when the aqueous two-component epoxy coating needs to be used, the first component prepared in the step (4) and the second component prepared in the step (6) are mixed and stirred uniformly, and the aqueous two-component epoxy coating on the surface of the battery cell shell is obtained.
In order to make the aforementioned and other objects, features, and advantages of the present invention comprehensible, several embodiments accompanied with the present invention are described below to illustrate a method for preparing a two-component waterborne epoxy coating on a surface of a cell casing.
Example 1
The invention discloses a two-component epoxy coating on the surface of a battery cell shell, which comprises a first component and a second component in percentage by weight as follows:
the first component includes: 16.37 percent of deionized water, 0.8 percent of dispersant, 0.15 percent of first defoaming agent, 0.18 percent of second defoaming agent, 0.45 percent of flatting agent, 0.15 percent of bactericide, 1.0 percent of flash rust inhibitor, 0.3 percent of anti-scraping and wear-resisting agent, 0.35 percent of organic modified bentonite, 0.3 percent of pH regulator, 0.2 percent of thickener, 11.25 percent of flame retardant, 4.0 percent of titanium pigment, 5.0 percent of phthalocyanine blue, 8.0 percent of modified barium sulfate, 6.5 percent of zinc-free environment-friendly anti-rust pigment and 45 percent of water-based epoxy curing agent;
the second component includes: 98.0 percent of water-based epoxy resin, 2.0 percent of adhesion promoter and 0.15 percent of second defoaming agent.
The mass ratio of the first component to the second component is 7: 1.
The first defoaming agent includes an organically modified polysiloxane, and the second defoaming agent includes an acetylene glycol-based defoaming agent.
The waterborne epoxy curing agent comprises a modified amine waterborne epoxy curing agent.
The thickness of the coating obtained by spraying the two-component epoxy coating on the surface of the battery cell shell is 120-170 mu m.
The water-based epoxy curing agent is specifically a water-based dispersion of modified amine, the scratch-resistant and wear-resistant agent is specifically a polysiloxane dispersion with ultra-high molecular weight, the flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant, and the adhesion promoter is specifically modified epoxy phosphate.
The water-based epoxy resin is prepared by adopting a reverse phase emulsification technology.
A preparation method of a waterborne two-component epoxy coating on the surface of a battery cell shell comprises the following steps:
preparing a first component:
(1) slowly adding the waterborne epoxy curing agent in the formula into a mixing tank, adding the dispersing agent, the flatting agent and the first defoaming agent under the stirring state of 300r/min, and then stirring at the speed of 500r/min for dispersing for 10-30 min;
(2) slowly adding part of deionized water and the flash rust inhibitor under the stirring state of 300r/min, then stirring at the speed of 500r/min, and dispersing for 10-30 min;
(3) slowly adding organic modified bentonite, a flame retardant, titanium dioxide, phthalocyanine blue, modified barium sulfate and a zinc-free environment-friendly antirust pigment under the stirring state of 300r/min, slowly increasing the speed, after the substances are completely soaked, increasing the speed to 1000r/min, stirring for 25-35min, soaking a sealing cover for 4h, after the substances are fully soaked, transferring the substances to a horizontal sand mill to start grinding, starting circulating cooling water, controlling the grinding temperature not to exceed 40 ℃, measuring by a scraper blade fineness meter until the fineness reaches 18-23um, and discharging grinding slurry to a paint mixing tank;
(4) slowly adding bactericide, second defoaming agent, pH regulator under stirring at 300r/min, increasing the speed to 500r/min, dispersing for 15-30min, adjusting the viscosity to 55-65s with deionized water and thickener, filtering with 200 mesh filter cloth, and packaging to obtain the first component;
preparing a second component:
(5) adding slow water-based epoxy resin into a paint mixing tank without water and other impurities, starting stirring to 300r/min, slowly adding the adhesion promoter and the second defoaming agent according to the formula amount, accelerating to 1000r/min, dispersing for 15-30min, and stopping stirring.
(6) Standing for defoaming for 30min, filtering with 200 mesh filter cloth, and packaging to obtain a second component;
(7) when the aqueous two-component epoxy coating needs to be used, the first component prepared in the step (4) and the second component prepared in the step (6) are mixed and stirred uniformly, and the aqueous two-component epoxy coating on the surface of the battery cell shell is obtained.
Example 2
The invention discloses a waterborne two-component epoxy coating on the surface of a battery cell shell, which comprises a first component and a second component in percentage by weight as follows:
the first component includes: 13.5 percent of deionized water, 0.5 percent of dispersant, 0.1 percent of first defoaming agent, 0.12 percent of second defoaming agent, 0.3 percent of flatting agent, 0.1 percent of bactericide, 0.5 percent of flash rust inhibitor, 0.1 percent of scratch-resistant and wear-resistant agent, 0.2 percent of organic modified bentonite, 0.1 percent of pH regulator, 0.1 percent of thickener, 3.0 percent of flame retardant 7 titanium pigment, 4.0 percent of phthalocyanine blue, 9.0 percent of modified barium sulfate, 4.0 percent of zinc-free environment-friendly anti-rust pigment and 35 percent of water-based epoxy curing agent;
the second component includes: 97.3 percent of water-based epoxy resin, 1.5 percent of adhesion promoter and 0.1 percent of second defoaming agent.
The mass ratio of the first component to the second component is 7: 1.
The first defoaming agent includes an organically modified polysiloxane, and the second defoaming agent includes an acetylene glycol-based defoaming agent.
The waterborne epoxy curing agent comprises a modified amine waterborne epoxy curing agent.
The thickness of the coating obtained by spraying the aqueous two-component epoxy coating on the surface of the battery cell shell is 120-170 mu m.
The water-based epoxy curing agent is specifically a water-based dispersion of modified amine, the scratch-resistant and wear-resistant agent is specifically a polysiloxane dispersion with ultra-high molecular weight, the flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant, and the adhesion promoter is specifically modified epoxy phosphate.
The water-based epoxy resin is prepared by adopting a reverse phase emulsification technology.
A preparation method of a waterborne two-component epoxy coating on the surface of a battery cell shell comprises the following steps:
preparing a first component:
(1) slowly adding the waterborne epoxy curing agent in the formula into a mixing tank, adding the dispersing agent, the flatting agent and the first defoaming agent under the stirring state of 300r/min, and then stirring at the speed of 500r/min for dispersing for 10-30 min;
(2) slowly adding part of deionized water and the flash rust inhibitor under the stirring state of 300r/min, then stirring at the speed of 500r/min, and dispersing for 10-30 min;
(3) slowly adding organic modified bentonite, a flame retardant, titanium dioxide, phthalocyanine blue, modified barium sulfate and a zinc-free environment-friendly antirust pigment under the stirring state of 300r/min, slowly increasing the speed, after the substances are completely soaked, increasing the speed to 1000r/min, stirring for 25-35min, soaking a sealing cover for 4h, after the substances are fully soaked, transferring the substances to a horizontal sand mill to start grinding, starting circulating cooling water, controlling the grinding temperature not to exceed 40 ℃, measuring by a scraper blade fineness meter until the fineness reaches 18-23um, and discharging grinding slurry to a paint mixing tank;
(4) slowly adding bactericide, second defoaming agent, pH regulator under stirring at 300r/min, increasing the speed to 500r/min, dispersing for 15-30min, adjusting the viscosity to 55-65s with deionized water and thickener, filtering with 200 mesh filter cloth, and packaging to obtain the first component;
preparing a second component:
(5) adding slow water-based epoxy resin into a paint mixing tank without water and other impurities, starting stirring to 300r/min, slowly adding the adhesion promoter and the second defoaming agent according to the formula amount, accelerating to 1000r/min, dispersing for 15-30min, and stopping stirring.
(6) Standing for defoaming for 30min, filtering with 200 mesh filter cloth, and packaging to obtain a second component;
(7) when the aqueous two-component epoxy coating needs to be used, the first component prepared in the step (4) and the second component prepared in the step (6) are mixed and stirred uniformly, and the aqueous two-component epoxy coating on the surface of the battery cell shell is obtained.
Example 3
The invention discloses a waterborne two-component epoxy coating on the surface of a battery cell shell, which comprises a first component and a second component in percentage by weight as follows:
the first component includes: 18% of deionized water, 1.0% of dispersing agent, 0.2% of first defoaming agent, 0.25% of second defoaming agent, 0.6% of flatting agent, 0.2% of bactericide, 1.5% of flash rust inhibitor, 0.5% of scratch-resistant and wear-resistant agent, 0.5% of organic modified bentonite, 0.5% of pH regulator, 0.25% of thickening agent, 16.5% of flame retardant, 5.0% of titanium dioxide, 6.0% of phthalocyanine blue, 5.0% of modified barium sulfate, 9.0% of zinc-free environment-friendly anti-rust pigment and 55% of water-based epoxy curing agent;
the second component includes: 98.4 percent of waterborne epoxy resin, 2.5 percent of adhesion promoter and 0.2 percent of second defoaming agent.
The mass ratio of the first component to the second component is 7: 1.
The first defoaming agent includes an organically modified polysiloxane, and the second defoaming agent includes an acetylene glycol-based defoaming agent.
The waterborne epoxy curing agent comprises a modified amine waterborne epoxy curing agent.
The thickness of the coating obtained by spraying the aqueous two-component epoxy coating on the surface of the battery cell shell is 120-170 mu m.
The water-based epoxy curing agent is specifically a water-based dispersion of modified amine, the scratch-resistant and wear-resistant agent is specifically a polysiloxane dispersion with ultra-high molecular weight, the flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant, and the adhesion promoter is specifically modified epoxy phosphate.
The water-based epoxy resin is prepared by adopting a reverse phase emulsification technology.
A preparation method of a waterborne two-component epoxy coating on the surface of a battery cell shell comprises the following steps:
preparing a first component:
(1) slowly adding the waterborne epoxy curing agent in the formula into a mixing tank, adding the dispersing agent, the flatting agent and the first defoaming agent under the stirring state of 300r/min, and then stirring at the speed of 500r/min for dispersing for 10-30 min;
(2) slowly adding part of deionized water and the flash rust inhibitor under the stirring state of 300r/min, then stirring at the speed of 500r/min, and dispersing for 10-30 min;
(3) slowly adding organic modified bentonite, a flame retardant, titanium dioxide, phthalocyanine blue, modified barium sulfate and a zinc-free environment-friendly antirust pigment under the stirring state of 300r/min, slowly increasing the speed, after the substances are completely soaked, increasing the speed to 1000r/min, stirring for 25-35min, soaking a sealing cover for 4h, after the substances are fully soaked, transferring the substances to a horizontal sand mill to start grinding, starting circulating cooling water, controlling the grinding temperature not to exceed 40 ℃, measuring by a scraper blade fineness meter until the fineness reaches 18-23um, and discharging grinding slurry to a paint mixing tank;
(4) slowly adding bactericide, second defoaming agent, pH regulator under stirring at 300r/min, increasing the speed to 500r/min, dispersing for 15-30min, adjusting the viscosity to 55-65s with deionized water and thickener, filtering with 200 mesh filter cloth, and packaging to obtain the first component;
preparing a second component:
(5) adding slow water-based epoxy resin into a paint mixing tank without water and other impurities, starting stirring to 300r/min, slowly adding the adhesion promoter and the second defoaming agent according to the formula amount, accelerating to 1000r/min, dispersing for 15-30min, and stopping stirring.
(6) Standing for defoaming for 30min, filtering with 200 mesh filter cloth, and packaging to obtain a second component;
(7) when the aqueous two-component epoxy coating needs to be used, the first component prepared in the step (4) and the second component prepared in the step (6) are mixed and stirred uniformly, and the aqueous two-component epoxy coating on the surface of the battery cell shell is obtained.
Practical application tests prove that the detection results of the embodiments 1 to 3 of the invention are as follows:
the technical scheme in the embodiment of the application at least has the following technical effects or advantages: the waterborne epoxy curing agent used in the invention is a modified amine waterborne dispersion, the waterborne epoxy resin is prepared by adopting an inverse emulsification technology, the VOC content is low, and the finally prepared coating has good decoration and can be used as a primer-topcoat coating. The anti-scraping wear-resisting agent in the components is polysiloxane dispersion liquid with ultra-high molecular weight, and can reduce the surface friction coefficient of a paint film, prevent adhesion and improve the wear resistance. The flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant. The adhesion promoter is modified epoxy phosphate, can enhance the adhesion of a coating film on different base materials, such as stainless steel, aluminum materials and the like, can improve the compactness of the coating film, has the hardness of more than 1H, the electrical insulation property of more than or equal to 800M omega, the water resistance of more than 180 days, the neutral salt spray resistance of 1000H, the shear strength of more than 10MPa, the humidity and heat resistance of 1000H, the adhesion of 0 level, the wear resistance of 4000 times of cycle test, the 10 percent sulfuric acid resistance of 35 days, the 10 percent sodium hydroxide resistance of 35 days and the butanone wiping resistance of 200 times without change.
The product provided by the invention is a blue electric core shell surface insulation and wear-resistant water-based bi-component epoxy coating, and water is used as a diluent, so that almost no VOC is generated; the service life of the component I and the component II is 3-4 hours after mixing, the coating can meet the flow line operation, the construction is convenient, and the coating can be forcibly dried at low temperature (50 ℃/30min) or naturally dried. After being completely cured, the coating forms a three-dimensional net structure, meets the requirements of a coating with high insulativity, high decorativeness, high wear resistance, high adhesive force and high durability, can effectively prolong the service life of the coating, improves the economic benefit, and is particularly suitable for decoration and protection of low surface tension substrates such as aluminum materials, stainless steel and the like.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The waterborne two-component epoxy coating on the surface of the battery cell shell is characterized in that: the composition comprises a first component and a second component in percentage by weight as follows:
the first component includes:
13.5 to 18 percent of deionized water
0.5 to 1.0 percent of dispersant
0.1 to 0.2 percent of first defoaming agent
0.12 to 0.25 percent of second antifoaming agent
0.3 to 0.6 percent of flatting agent
0.1 to 0.2 percent of bactericide
0.5 to 1.5 percent of flash rust inhibitor
0.1 to 0.5 percent of scratch-resistant and wear-resistant agent
0.2 to 0.5 percent of organic modified bentonite
0.1 to 0.5 percent of pH regulator
7.0 to 16.5 percent of flame retardant
0.15 to 0.25 percent of thickening agent
Titanium dioxide 3.0-5.0%
Phthalocyanine blue 4.0-6.0%
5.0 to 10.0 percent of modified barium sulfate
Zinc-free environment-friendly antirust pigment 4.0-9.0%
35-55% of water-based epoxy curing agent;
the second component includes:
97.3 to 98.4 percent of waterborne epoxy resin
1.5 to 2.5 percent of adhesion promoter
0.1 to 0.2 percent of second antifoaming agent.
2. The aqueous two-component epoxy coating for the surface of the battery cell casing, according to claim 1, is characterized in that: the aqueous bi-component epoxy coating on the surface of the battery cell shell comprises a first component and a second component which are proportioned according to weight percentage;
the first component includes:
16.37 percent of deionized water
0.8 percent of dispersant
0.15 percent of first defoaming agent
0.18 percent of second antifoaming agent
0.45 percent of flatting agent
0.15 percent of bactericide
1.0 percent of flash rust inhibitor
0.3 percent of scratch-resistant and wear-resistant agent
0.35 percent of organic modified bentonite
0.3 percent of pH regulator
11.25 percent of flame retardant
0.2 percent of thickening agent
Titanium dioxide 4.0%
Phthalocyanine blue 5.0%
8.0 percent of modified barium sulfate
Zinc-free environment-friendly anti-rust pigment 6.5%
45% of water-based epoxy curing agent;
the second component includes:
98.0 percent of waterborne epoxy resin
2.0 percent of adhesion promoter
0.15 percent of second antifoaming agent.
3. The aqueous two-component epoxy coating for the surface of the battery cell casing, according to claim 1, is characterized in that: the mass ratio of the first component to the second component is 7: 1.
4. The aqueous two-component epoxy coating for the surface of the battery cell casing, according to claim 1, is characterized in that: the first defoaming agent includes an organically modified polysiloxane, and the second defoaming agent includes an acetylene glycol-based defoaming agent.
5. The aqueous two-component epoxy coating for the surface of the battery cell casing, according to claim 1, is characterized in that: the waterborne epoxy curing agent comprises a modified amine waterborne epoxy curing agent.
6. The two-component epoxy coating for the surface of the cell casing of claim 1, wherein: the thickness of the coating obtained by spraying the two-component epoxy coating on the surface of the battery cell shell is 120-170 mu m.
7. The aqueous two-component epoxy coating for the surface of the battery cell casing, according to claim 1, is characterized in that: the water-based epoxy curing agent is specifically an aqueous dispersion of modified amine, the scratch-resistant and wear-resistant agent is specifically a polysiloxane dispersion with ultra-high molecular weight, the flame retardant is specifically a phosphorus-nitrogen halogen-free flame retardant, and the adhesion promoter is specifically modified epoxy phosphate.
8. The two-component epoxy coating for the surface of the cell casing of claim 1, wherein: the water-based epoxy resin is prepared by adopting a reverse phase emulsification technology.
9. The method for preparing the aqueous two-component epoxy coating on the surface of the battery cell shell according to any one of claims 1 to 8, wherein the method comprises the following steps: the method comprises the following steps:
preparing a first component:
(1) slowly adding the waterborne epoxy curing agent in the formula into a mixing tank, adding the dispersing agent, the flatting agent and the first defoaming agent under the stirring state of 300r/min, and then stirring at the speed of 500r/min for dispersing for 10-30 min;
(2) slowly adding part of deionized water and the flash rust inhibitor under the stirring state of 300r/min, then stirring at the speed of 500r/min, and dispersing for 10-30 min;
(3) slowly adding organic modified bentonite, a flame retardant, titanium dioxide, phthalocyanine blue, modified barium sulfate and a zinc-free environment-friendly antirust pigment under the stirring state of 300r/min, slowly increasing the speed, after the substances are completely soaked, increasing the speed to 1000r/min, stirring for 25-35min, soaking a sealing cover for 4h, after the substances are fully soaked, transferring the substances to a horizontal sand mill to start grinding, starting circulating cooling water, controlling the grinding temperature not to exceed 40 ℃, measuring by a scraper blade fineness meter until the fineness reaches 18-23um, and discharging grinding slurry to a paint mixing tank;
(4) slowly adding bactericide, second defoaming agent, pH regulator under stirring at 300r/min, increasing the speed to 500r/min, dispersing for 15-30min, adjusting the viscosity to 55-65s with deionized water and thickener, filtering with 200 mesh filter cloth, and packaging to obtain the first component;
preparing a second component:
(5) adding slow water-based epoxy resin into a paint mixing tank without water and other impurities, starting stirring to 300r/min, slowly adding the adhesion promoter and the second defoaming agent according to the formula amount, accelerating to 1000r/min, dispersing for 15-30min, and stopping stirring.
(6) standing for defoaming for 30min, filtering with 200-mesh filter cloth, and packaging to obtain a second component;
(7) when the aqueous two-component epoxy coating needs to be used, the first component prepared in the step (4) and the second component prepared in the step (6) are mixed and stirred uniformly, and the aqueous two-component epoxy coating on the surface of the battery cell shell is obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116179045A (en) * | 2022-11-21 | 2023-05-30 | 成都虹润制漆有限公司 | Fiber-reinforced water-based insulating paint and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811000A (en) * | 2017-01-11 | 2017-06-09 | 合肥英索莱特新材料科技有限公司 | Double-component aqueous corrosion-resistant epoxy paint |
| CN109370383A (en) * | 2018-10-30 | 2019-02-22 | 永济优耐特绝缘材料有限责任公司 | A kind of fast-drying aqueous coating of salt spray resistance and preparation method thereof |
| CN109880484A (en) * | 2019-02-20 | 2019-06-14 | 上海振华重工（集团）常州油漆有限公司 | A kind of water-base epoxy thickness slurry anti-decaying paint and its preparation method and application |
| CN111978820A (en) * | 2020-08-25 | 2020-11-24 | 永济优耐特绝缘材料有限责任公司 | Water-based epoxy protective coating system and preparation method thereof |
-
2021
- 2021-03-19 CN CN202110296822.9A patent/CN112961575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811000A (en) * | 2017-01-11 | 2017-06-09 | 合肥英索莱特新材料科技有限公司 | Double-component aqueous corrosion-resistant epoxy paint |
| CN109370383A (en) * | 2018-10-30 | 2019-02-22 | 永济优耐特绝缘材料有限责任公司 | A kind of fast-drying aqueous coating of salt spray resistance and preparation method thereof |
| CN109880484A (en) * | 2019-02-20 | 2019-06-14 | 上海振华重工（集团）常州油漆有限公司 | A kind of water-base epoxy thickness slurry anti-decaying paint and its preparation method and application |
| CN111978820A (en) * | 2020-08-25 | 2020-11-24 | 永济优耐特绝缘材料有限责任公司 | Water-based epoxy protective coating system and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116179045A (en) * | 2022-11-21 | 2023-05-30 | 成都虹润制漆有限公司 | Fiber-reinforced water-based insulating paint and preparation method thereof |
| CN116179045B (en) * | 2022-11-21 | 2023-11-10 | 成都虹润制漆有限公司 | Fiber-reinforced water-based insulating paint and preparation method thereof |
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