CN110982380A - Water-based epoxy resin cabin coating and preparation method thereof - Google Patents
Water-based epoxy resin cabin coating and preparation method thereof Download PDFInfo
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- CN110982380A CN110982380A CN201911268220.1A CN201911268220A CN110982380A CN 110982380 A CN110982380 A CN 110982380A CN 201911268220 A CN201911268220 A CN 201911268220A CN 110982380 A CN110982380 A CN 110982380A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a waterborne epoxy resin cabin coating which comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 8-5: 1; the component A comprises the following components in percentage by mass: 30-50% of epoxy resin emulsion, 7-15% of anti-rust pigment, 20-50% of pigment and filler, 1-2% of film-forming additive, 5-8% of other additives and 5-30% of water; the component B is a waterborne epoxy amine curing agent, the solid content is 45-55%, and the solvent is water. According to the water-based epoxy resin cabin coating, the VOC content of a cured paint film meets the environment-friendly standard of not more than 80g/L, the adhesive force between the paint film and a base material is not less than 5MPa, the water contact angle of the paint film reaches more than 100 ℃, the paint film is stable, the recoating is easy, and the salt spray resistance and the corrosion resistance are excellent.
Description
Technical Field
The invention relates to the field of marine coatings, and mainly relates to a water-based epoxy resin cabin coating and a preparation method thereof.
Background
The coating used by the existing ship is an oily coating, a large amount of Volatile Organic Compounds (VOC) can be generated in the construction process, the environment is polluted, and accidents such as fire, poisoning and the like are easy to happen; in the application process, especially in the construction of soft covering of the insulating layer, the soft covering cloth and the insulating and heat-insulating material are both porous materials, so that the absorption amount of the coating is large, and the organic solvent is easily sealed in the porous base material, so that the body health of workers and living staff in the cabin is influenced.
The water-based paint uses water as a dispersion medium, can greatly save petroleum resources, reduce VOC emission, reduce environmental pollution, is non-combustible and non-explosive in the paint production and coating processes, can eliminate fire and toxic hidden troubles in the interior cabin paint construction, obviously improves the interior cabin environment, enables certain cross operations to be possible, and is beneficial to improving the work efficiency.
In developed countries, water-based epoxy anticorrosive paint technology has been widely used in many fields. In the united states, waterborne epoxy coatings are the first to meet the U.S. military coating specifications and have been used in aircraft and marine primers; germany is used in nuclear power projects, railway engineering and on naval vessel hulls; the water-based epoxy resin coating is applied in bridge design in Japan, and the field performance test result is equivalent to that of the solvent-based heavy anti-corrosion coating; norwegian develops a water-based epoxy anticorrosive ship paint containing special active pigment and filler, which can be used at low temperature of minus thirty ℃ and is used for shells of special ships.
Since the 70 s in the 20 th century, new synthetic techniques and waterborne epoxy anticorrosive paint products are continuously provided abroad, such as waterborne epoxy resin series WATERPOXY1401, 1455 and the like of Henkel company in Germany, waterborne epoxy curing agents WATERPOXY751, 755 and the like; EPRIEZ3510-W-60 and EPI-REZW-51 from Shell, USA, and so on. Many foreign Paint companies have successively introduced waterborne Paint products and have actually tried on ships and containers, such as k.c.c. in korea, "china" Paint and Kansai in japan, Hemple in denmark, Tetia Paint in france, and joton in norway.
However, the production and application of the domestic water-based epoxy anticorrosive paint are still in a starting state, the utilization rate is far behind European and American, the reasons for the utilization rate are mainly that the price of imported products is high, the performance of domestic products is poor, the mechanical property, the adhesive force and the anticorrosive property of the existing water-based epoxy anticorrosive paint cannot meet the requirements, and particularly in the container industry, after the paint is used for two years, the paint has a serious corrosion phenomenon, so that great economic loss is caused. Therefore, in the marine coating industry with extremely high anticorrosive requirements, further development and improvement of the prior art are needed for the waterborne epoxy anticorrosive coatings.
Disclosure of Invention
The invention aims to solve the problems of low environmental protection performance, low coating quality, complex preparation process and difficult construction of the existing water-based epoxy resin coating, and provides the water-based epoxy resin cabin coating with low preparation cost, good quality performance, good environmental protection performance, easy mastery preparation process and good construction performance and the preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a waterborne epoxy resin cabin coating which is characterized by comprising a component A and a component B, wherein the weight ratio of the component A to the component B is 8-5: 1;
the component A comprises the following components in percentage by mass:
the component B is a commercially available waterborne epoxy amine curing agent, the solid content is 45-55%, and the solvent is water; the waterborne epoxy amine curing agent is one or a mixture of two of a low-viscosity curing agent synthesized by the reaction of an epoxy compound and aliphatic amine and a waterborne amine curing agent consisting of an addition product of a polyether compound containing an epoxy group and amine.
Further, the epoxy resin emulsion is nonionic waterborne epoxy resin emulsion, and is nonionic self-emulsifying waterborne epoxy resin emulsion formed by chemical grafting and phase inversion at high temperature of liquid epoxy resin; the emulsion has uniform particle size, no toxicity, no odor, complete oil-in-water system, easy cleaning of water and simple and convenient field use.
The rust-proof pigment is selected from zinc phosphate and aluminum tripolyphosphateOne or a mixture of two of zinc aluminum phosphate, calcium zinc phosphomolybdate and strontium phosphosilicate; preferably zinc phosphate and/or aluminium tripolyphosphate; the mechanism of zinc phosphate rust prevention is that the zinc phosphate rust prevention mechanism can be on the metal surface and Fe3+Form a firmly adhering complex Fe [ Zn ]3(PO4)3]The deposition layer can inhibit the anode reaction and can be complexed with hydroxyl and carboxyl in the paint, so that chemical combination is formed between the pigment-paint-substrate to improve the adhesive force and the impermeability of the coating; aluminum tripolyphosphate is a white pigment, is slightly soluble in water, is ionized when dissolved under a coating, and is combined with metal ions at an anode part to form an insoluble passivation film, and the film has high hardness and firm adhesion.
The pigment filler comprises an extender filler and a pigment, wherein the extender filler is one or a mixture of more of precipitated barium sulfate, talcum powder, mica powder, kaolin, barite powder and light calcium carbonate; the pigment is selected from one or more of rutile titanium dioxide, red iron oxide, black iron oxide, yellow iron oxide, phthalocyanine blue and carbon black.
The film-forming assistant is selected from low-odor alcohol ether or fatty acid diester film-forming assistant with the boiling point of more than 250 ℃; the other auxiliary agents comprise one or a mixture of more of a defoaming agent, a flatting agent, a wetting agent, a dispersing agent, a thickening agent, an anti-settling agent, an anti-mildew agent, an antirust agent, a preservative and a pH regulator.
The invention also provides a preparation method of the water-based epoxy resin cabin coating, which is characterized by comprising the following steps:
(1) mixing 2-15% (in percentage by total mass, the same below) of water and 2-4% of other auxiliary agents, uniformly dispersing and stirring at a high speed, adding 20-50% of the pigment and filler and 7-15% of the anti-rust pigment under stirring, continuously stirring and dispersing for 20-40 minutes, then grinding and dispersing, controlling the fineness to be ground to be less than or equal to 30 mu m, and filtering slurry to obtain color paste;
(2) adding 30-50% of the epoxy resin emulsion into a paint mixing tank, adding the color paste obtained in the step (1), 1-2% of the film-forming aid, the rest water and the rest of other aids, stirring for about 15 minutes until the materials are completely uniform, and detecting a discharged material component A;
(3) and (3) uniformly mixing and stirring the component A and the component B according to the weight ratio of 8-5: 1 to obtain the waterborne epoxy resin cabin coating.
The water-based epoxy resin cabin coating adopts non-ionic water-based epoxy resin emulsion as a main film forming material, and has excellent adhesive force, impact resistance, wear resistance and seawater resistance; the storage period of the emulsion is more than 10 months, the freeze-thaw resistance cycle is more than 5 times, the hardness of a coating swing rod is more than 0.7, the drawing adhesion is more than 5MPa, and the water resistance, the acid and alkali resistance, the solvent resistance and the corrosion resistance are all obviously improved compared with the existing products sold in the market; the content (VOC) of volatile organic compounds in the cured paint film meets the environment-friendly standard of less than or equal to 80g/L, the adhesive force between the paint film and a base material is more than or equal to 5MPa, the water contact angle of the paint film reaches more than 100 degrees and is kept stable, the recoating is easy, and the paint film has excellent salt spray resistance and corrosion resistance and can be used for corrosion prevention of marine engine rooms. The method has the advantages of simple preparation process, easy mastering of the preparation process, low cost, good environmental protection performance, and no generation of waste gas, waste water, waste residue and the like in the production process.
Detailed Description
It should be understood by those skilled in the art that the present embodiment is only for illustrating the present invention and is not to be used as a limitation of the present invention, and changes and modifications of the embodiment can be made within the scope of the claims of the present invention.
The raw materials used in this example are all commercially available.
Example 1
The water-based epoxy resin cabin coating comprises the following components in percentage by weight:
the component B is a US Hensmeian Huntsman Aradur 3985 aqueous epoxy curing agent.
Adding 15 percent (accounting for the total mass percentage, the same below) of water, 0.9 percent of dispersant, 0.1 percent of defoamer and 0.1 percent of wetting leveling agent into a mixing tank, dispersing and stirring uniformly at a high speed, adding 5 percent of zinc phosphate, 7 percent of aluminum tripolyphosphate, 10 percent of kaolin, 5 percent of barite powder and 10 percent of titanium dioxide under the stirring state, continuing stirring and dispersing for 40 minutes, then grinding and dispersing, controlling the fineness to be ground to be less than or equal to 30 mu m, and filtering slurry; adding 40% of nonionic waterborne epoxy resin emulsion K-051 into a paint mixing tank, adding 0.2% of wetting agent, 1.5% of flash rust inhibitor, 0.1% of wetting and leveling agent, 1% of film forming additive, 1% of LT rheological agent, 0.1% of defoaming agent and 3% of deionized water, stirring for about 15 minutes until the mixture is completely uniform, and detecting the component A.
Mixing the component A and the component B according to the ratio of 8: 1 weight ratio, and uniformly mixing and stirring to obtain the waterborne epoxy resin cabin coating.
Coating the marine water-based engine room anticorrosive primer obtained in the embodiment on the surface of steel, and carrying out adhesion, salt water resistance and salt mist resistance tests on a coating film, wherein the adhesion is detected according to GB/T5210 standard, and the drawing adhesion is not less than 5MPa and is higher than the industrial standard; the salt water resistance (200h) is tested according to GB/T10834-2008, and the appearance of the coating film is not foamed and corroded; the salt spray resistance is tested according to the GB/T1771 standard, the thickness of the coating film is about 40 mu m, and the salt spray resistance can reach 800h without foaming and rusting.
Example 2
The water-based epoxy resin cabin coating comprises the following components in percentage by weight:
the component B is a American Hensman huntsmanAradur 38 water-based epoxy curing agent.
Adding 15% of water, 0.9% of dispersing agent, 0.1% of defoaming agent and 0.1% of wetting agent into a mixing tank, dispersing at high speed and stirring uniformly, adding 5% of zinc phosphate, 7% of aluminum tripolyphosphate, 7% of talcum powder, 8% of mica powder, 10% of titanium dioxide and iron oxide yellow under the stirring state, continuously stirring and dispersing for 30 minutes, then grinding and dispersing, controlling the fineness to grind to be less than or equal to 30 mu m, and filtering slurry; 42 percent of nonionic waterborne epoxy resin emulsion Epikote3510-W-60A is put into a paint mixing tank, then 2 percent of flash rust inhibitor, 0.6 percent of substrate wetting agent, 0.7 percent of thickening agent, 0.1 percent of defoaming agent and 1.5 percent of film forming additive are added, the mixture is stirred for about 15 minutes until the mixture is completely uniform, and then the component A is detected.
Mixing the component A and the component B according to the proportion of 7: 1 weight ratio, and uniformly mixing and stirring to obtain the waterborne epoxy resin cabin coating.
Coating the marine water-based engine room anticorrosive primer obtained in the embodiment on the surface of steel, and carrying out adhesion, salt water resistance and salt mist resistance tests on a coating film, wherein the adhesion is detected according to GB/T5210 standard, and the drawing adhesion is not less than 5MPa and is higher than the industrial standard; the salt water resistance (200h) is tested according to GB/T10834-2008, and the appearance of the coating film is not foamed and corroded; the salt spray resistance is tested according to the GB/T1771 standard, the thickness of the coating film is about 40 mu m, and the salt spray resistance can reach 800h without foaming and rusting.
Example 3
The waterborne cabin primer for the ship comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight:
the component B is a U.S. Hensman huntsmanAradur 36 water-based epoxy curing agent.
Putting 11% of water, 0.5% of dispersing agent, 0.05% of defoaming agent and 0.05% of wetting leveling agent into a mixing tank, dispersing at high speed and stirring uniformly, putting 6% of zinc phosphate, 6% of aluminum tripolyphosphate, 10% of titanium dioxide, 6% of talcum powder and 6% of precipitated barium sulfate under a stirring state, accelerating the dispersion for 25 minutes, then carrying out grinding dispersion, controlling the fineness to grind to be less than or equal to 30 mu m, and filtering slurry; 50% of nonionic waterborne epoxy resin emulsion Epikote3510-W-60A is put into a paint mixing tank, then 0.1% of wetting agent, 0.2% of rheological agent, 2% of anti-flash rust agent, 0.05% of wetting and leveling agent, 2% of film forming additive and 0.05% of defoaming agent are added in sequence, the mixture is stirred for about 15 minutes until the mixture is completely uniform, and then the component A is detected.
Mixing the component A and the component B according to the ratio of 5:1 weight ratio, and uniformly mixing and stirring to obtain the waterborne epoxy resin cabin coating.
Coating the marine water-based engine room anticorrosive primer obtained in the embodiment on the surface of steel, and carrying out adhesion, salt water resistance and salt mist resistance tests on a coating film, wherein the adhesion is detected according to GB/T5210 standard, and the drawing adhesion is not less than 5MPa and is higher than the industrial standard; the salt water resistance (200h) is tested according to GB/T10834-2008, and the appearance of the coating film is not foamed and corroded; the salt spray resistance is tested according to the GB/T1771 standard, the thickness of the coating film is about 40 mu m, and the salt spray resistance can reach 800h without foaming and rusting.
Claims (7)
1. The water-based epoxy resin cabin coating is characterized by comprising a component A and a component B, wherein the weight ratio of the component A to the component B is 8-5: 1;
the component A comprises the following components in percentage by mass:
30 to 50 percent of epoxy resin emulsion,
7 to 15 percent of antirust pigment,
20 to 50 percent of pigment and filler,
1 to 2 percent of film-forming additive,
5 to 8 percent of other auxiliary agents,
5 to 30 percent of water;
the component B is a waterborne epoxy amine curing agent, the solid content is 45-55%, and the solvent is water; the waterborne epoxy amine curing agent is one or a mixture of two of a low-viscosity curing agent synthesized by the reaction of an epoxy compound and aliphatic amine and a waterborne amine curing agent consisting of an addition product of a polyether compound containing an epoxy group and amine.
2. The waterborne epoxy cabin coating of claim 1, wherein the epoxy resin emulsion is a nonionic waterborne epoxy resin emulsion, and the nonionic self-emulsifying waterborne epoxy resin emulsion is formed by chemical grafting and phase inversion at high temperature of liquid epoxy resin.
3. The waterborne epoxy resin cabin coating of claim 1, wherein the rust-preventive pigment is one or a mixture of two of zinc phosphate, aluminum tripolyphosphate, aluminum zinc phosphate, calcium zinc phosphomolybdate, strontium phosphosilicate.
4. The waterborne epoxy resin cabin coating of claim 1, wherein the rust inhibiting pigment is zinc phosphate and/or aluminum tripolyphosphate.
5. The water-based epoxy resin cabin coating of claim 1, wherein the pigment and filler comprises an extender and a pigment, and the extender is one or a mixture of several of precipitated barium sulfate, talcum powder, mica powder, kaolin, barite powder and light calcium carbonate; the pigment is selected from one or more of rutile titanium dioxide, red iron oxide, black iron oxide, yellow iron oxide, phthalocyanine blue and carbon black.
6. The waterborne epoxy cabin coating of claim 1, wherein the coalescent is selected from low odor alcohol ether or fatty acid diester coalescents having a boiling point above 250 ℃; the other auxiliary agents comprise one or a mixture of more of a defoaming agent, a flatting agent, a wetting agent, a dispersing agent, a thickening agent, an anti-settling agent, an anti-mildew agent, an antirust agent, a preservative and a pH regulator.
7. The preparation method of the water-based epoxy resin cabin coating of any one of claims 1 to 6, characterized by comprising the following steps:
(1) mixing 2-15% (in percentage by total mass, the same below) of water and 2-4% of other auxiliary agents, uniformly dispersing and stirring at a high speed, adding 20-50% of the pigment and filler and 7-15% of the anti-rust pigment under stirring, continuously stirring and dispersing for 20-40 minutes, then grinding and dispersing, controlling the fineness to be ground to be less than or equal to 30 mu m, and filtering slurry to obtain color paste;
(2) adding 30-50% of the epoxy resin emulsion into a paint mixing tank, adding the color paste obtained in the step (1), 1-2% of the film-forming aid, the rest water and the rest of other aids, stirring for about 15 minutes until the materials are completely uniform, and detecting a discharged material component A;
(3) and (3) uniformly mixing and stirring the component A and the component B according to the weight ratio of 8-5: 1 to obtain the waterborne epoxy resin cabin coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911268220.1A CN110982380A (en) | 2019-12-11 | 2019-12-11 | Water-based epoxy resin cabin coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911268220.1A CN110982380A (en) | 2019-12-11 | 2019-12-11 | Water-based epoxy resin cabin coating and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111909595A (en) * | 2020-08-14 | 2020-11-10 | 常州市武进晨光金属涂料有限公司 | Water-based anticorrosive paint for metal protection and preparation method thereof |
| CN112594268A (en) * | 2020-12-11 | 2021-04-02 | 安徽银禾木业有限公司 | Telescopic connecting piece for plate-type solid wood furniture |
| CN112852259A (en) * | 2021-01-12 | 2021-05-28 | 广西建工集团建筑产业投资有限公司 | Steel bar anticorrosive paint for autoclaved aerated concrete slab and preparation method thereof |
| CN113015771A (en) * | 2020-05-25 | 2021-06-22 | 厦门双瑞船舶涂料有限公司 | Water-based epoxy anticorrosive paint and preparation method thereof |
| CN113583537A (en) * | 2021-07-01 | 2021-11-02 | 江西省高精科技有限公司 | Water-based epoxy paint and preparation method thereof |
| CN113881378A (en) * | 2021-10-22 | 2022-01-04 | 广州惠利电子材料有限公司 | Insulating and voltage-resistant waterborne epoxy adhesive and preparation method thereof |
| CN114045086A (en) * | 2021-12-16 | 2022-02-15 | 安徽省金盾涂料有限责任公司 | Environment-friendly ship inner cabin floor paint |
| CN114773947A (en) * | 2022-03-03 | 2022-07-22 | 广东坚派新材料有限公司 | Impact-resistant and extension-resistant water-based primer for wind turbine blade, and preparation method and application method thereof |
| CN115975478A (en) * | 2022-12-30 | 2023-04-18 | 大钣科技(长兴)有限公司 | Water-based epoxy oil-resistant conductive electrostatic coating for inner wall of storage tank and preparation method thereof |
| CN116769379A (en) * | 2023-07-05 | 2023-09-19 | 聚涂科技(东莞)有限公司 | Water-based two-component epoxy high-gloss primer-topcoat anti-corrosion paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015771A (en) * | 2020-05-25 | 2021-06-22 | 厦门双瑞船舶涂料有限公司 | Water-based epoxy anticorrosive paint and preparation method thereof |
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| CN112594268A (en) * | 2020-12-11 | 2021-04-02 | 安徽银禾木业有限公司 | Telescopic connecting piece for plate-type solid wood furniture |
| CN112594268B (en) * | 2020-12-11 | 2022-07-26 | 安徽银禾木业有限公司 | Telescopic connecting piece for plate-type solid wood furniture |
| CN112852259A (en) * | 2021-01-12 | 2021-05-28 | 广西建工集团建筑产业投资有限公司 | Steel bar anticorrosive paint for autoclaved aerated concrete slab and preparation method thereof |
| CN113583537A (en) * | 2021-07-01 | 2021-11-02 | 江西省高精科技有限公司 | Water-based epoxy paint and preparation method thereof |
| CN113881378A (en) * | 2021-10-22 | 2022-01-04 | 广州惠利电子材料有限公司 | Insulating and voltage-resistant waterborne epoxy adhesive and preparation method thereof |
| CN114045086A (en) * | 2021-12-16 | 2022-02-15 | 安徽省金盾涂料有限责任公司 | Environment-friendly ship inner cabin floor paint |
| CN114773947A (en) * | 2022-03-03 | 2022-07-22 | 广东坚派新材料有限公司 | Impact-resistant and extension-resistant water-based primer for wind turbine blade, and preparation method and application method thereof |
| CN115975478A (en) * | 2022-12-30 | 2023-04-18 | 大钣科技(长兴)有限公司 | Water-based epoxy oil-resistant conductive electrostatic coating for inner wall of storage tank and preparation method thereof |
| CN116769379A (en) * | 2023-07-05 | 2023-09-19 | 聚涂科技(东莞)有限公司 | Water-based two-component epoxy high-gloss primer-topcoat anti-corrosion paint and preparation method thereof |
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Application publication date: 20200410 |