CN102775880A - Low-temperature quick-drying type epoxy paste paint and preparation method thereof - Google Patents
Low-temperature quick-drying type epoxy paste paint and preparation method thereof Download PDFInfo
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Abstract
The invention provides low-temperature quick-drying type epoxy paste paint and a preparation method thereof. The low-temperature quick-drying type epoxy paste paint comprises an A component and a B component, wherein the mass ratio of the A component to the B component is (6:1)-(2:1); the A component is prepared from the following raw materials in percentage by weight: 30-40% of epoxy resin, 0.5-1.0% of wetting dispersant, 1.0-1.5% of anti-settling agent, 10-15% of volatile matter mixed solvent, 5-10% of active diluent, 4.5-8.5% of titanium dioxide and 32-41% of talcum powder; the B component is prepared from the following raw materials in percentage by weight: 90-100% of cashew nut shell oil modified amine curing agent and 0-10% of epoxy curing agent accelerating agent. The invention also provides the preparation method of the low-temperature quick-drying type epoxy paste paint. The low-temperature quick-drying type epoxy paste paint has the following advantages: rapid curing can be realized at minus 10DEG C and the drying time is short, so that the low-temperature quick-drying type epoxy paste paint can be applied to the constructions of cold areas in winter; the one-off formed films are thick, so that the production capability of the coating construction is improved; and the workability is excellent, so that the service life of a substrate can be effectively prolonged.
Description
Technical field
The present invention relates to technical field of coatings, relate in particular to a kind of thick slurry lacquer of quick-drying low-temperature quick-dry type epoxy of can realizing at low temperatures.
Background technology
Epoxy-based lacquers is development in recent years one type of industrial coating very rapidly, generally speaking, the coating that contains more epoxide group in forming is referred to as epoxy-based lacquers.The principal item of epoxy-based lacquers is two-component coating, is made up of epoxy resin and solidifying agent.Other also have the kind of some single component self-drying types, but its performance and two-component coating relatively have a certain distance.The major advantage of epoxy-based lacquers is very strong to the sticking power of inorganic materials such as cement, metal; Coating itself is very corrosion-resistant; Mechanical property is good, and is wear-resisting, shock-resistant; Can be made into solvent-free or high solid coating; Organic solvent-resistant is heat-resisting, water-fast; It is nontoxic to film.Shortcoming is that weathering resistance is bad, and sun exposure is of a specified duration powder phenomenon-tion might to occur, thereby can only be used for priming paint or interior paint; Ornamental relatively poor, gloss is difficult for keeping; Construction environment is had relatively high expectations, and curing of coating is slow under the low temperature, and effect is bad; Many kinds need hot setting, and the input of coating equipment is bigger.
Epoxypaint is mainly used in aspects such as terrace application, vehicle paint base, anti-corrosion of metal, Chemical Preservation, and its performance characteristic is following:
1. chemical-resistant is good: owing to do not have ester bond in the epoxy resin, the aliphatic hydroxyl that contains not with alkali reaction, lacquer cured article is a tridimensional network, so the advantage that solidified epoxy resin is given prominence to is that chemical property is very stable, alkali resistance, oil resistant class.Therefore, epoxypaint is usually as inwalls such as anti-corrosion primer, oil grooves, but epoxies paint acid resistance is generally not good.
2. strong adhesion: because epoxy resin contains very strong ether of polarity and hydroxyl, produce strong interaction force, so to the strong adhesion of metal (steel, aluminium), pottery, glass, concrete, timber isopolarity ground with the ground interface.
3. high, the good toughness of intensity: thus since epoxy resin to contain aromatic ring intensity high; Because epoxy resin contains ehter bond, has given it and has carried out the inward turning ability of molecular chain, and be difficult for brittle failure, so good toughness.
4. electrical insulating property is good: the epoxy resin after the curing shows good insulativity, and its electrical property is that voltage breakdown is 35～50kV/mm under the room temperature, and volume resistance is 10 Ω cm.
5. good heat resistance: be generally 80～100 ℃, what have is up to 200 ℃, even higher.
6. cure shrinkage is little: dimensional stabilizing; Not easy to crack, the cure shrinkage of general epoxy resin is 1%～2%, and the cure shrinkage of resol is 8%～10%; The cure shrinkage of unsaturated polyester resin is 4%～6%, and the cure shrinkage of silicone resin is 4%～8%.
7. photoaging property is poor: the fragrant ehter bond in the solidified epoxy resin is under uviolizing, and degraded is ruptured, and outdoor weatherability is poor.Bisphenol A type epoxy resin solidified paint film is prone to the efflorescence loss of gloss out of doors, should not make outdoor antifouling paste, but heterocycle and aliphatic epoxy resin lacquer can be used for the open air.
8. curability at low temperatures is poor: the solidification value that epoxy resin is general is more than 10 ℃, otherwise solidifies slowly.Generally should not cause difficulty to winter, outdoor large-sized object construction in the construction of the environment below 10 ℃.
Epoxy hardener is meant and epoxy resin generation chemical reaction, forms netted space polymer, among reticulate body, facilitates the material of curing reaction to matrix material aggregate envelope.
Curing reaction belongs to chemical reaction, and it is very big influenced by solidification value, increase in temperature, and speed of response is accelerated, and gel time shortens; The logarithmic value of gel time is with solidification value rising linearly downtrending substantially, but solidification value is too high, condensate performance is descended, so there is the upper limit of solidification value; Must select to make the temperature of curing speed and condensate performance compromise, as proper curing temperature.If but temperature is low, activity of curing reaction is low, and speed of response is slow, and gel time is long.Even cross when low when temperature, curing reaction can not take place.
We can find out that epoxy coating restricts one of bottleneck of its development and is that curability at low temperatures is poor in sum.The solidification value that epoxy resin is general is more than 10 ℃, otherwise solidifies slowly.Generally should not cause difficulty for winter, outdoor large-sized object construction in the construction of environment below 10 ℃.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, the thick slurry lacquer of low-temperature quick-dry type epoxy that a kind of fast setting at low temperatures, one-pass film-forming are thick, volume contains height admittedly, VOC content is low is provided.
Another object of the present invention provides the preparation method of the thick slurry lacquer of this low-temperature quick-dry type epoxy.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is:
(1) the thick slurry lacquer of low-temperature quick-dry type epoxy
The thick slurry lacquer of a kind of low-temperature quick-dry type epoxy comprises A component and B component, and the mass ratio of said A component and B component is 6:1～2:1; Said A component forms by the feedstock production of following mass percent: epoxy resin 30～40%, wetting dispersing agent 0.5～1.0%, anti-settling agent 1.0～1.5%, fugitive constituent mixed solvent 10～15%, reactive thinner 5～10%, white titanium pigment 4.5～8.5%, talcum powder 32～41%; Said B component forms by the feedstock production of following mass percent: cashew nut oil modified amine curing agent 90～100%, epoxy hardener promotor 0～10%.
Fugitive constituent mixed solvent according to the invention forms by the feedstock production of following mass percent: phenylcarbinol 20～30%, pimelinketone 15～20%, YLENE 50～60%.
Anti-settling agent according to the invention is polyamide wax or polyethylene wax anti-settling agent.
Reactive thinner according to the invention is the aliphatic glycidyl ether reactive thinner.
White titanium pigment according to the invention is a Rutile type Titanium Dioxide.
(2) preparation method of the thick slurry lacquer of low-temperature quick-dry type epoxy
The preparation method of the thick slurry lacquer of low-temperature quick-dry type epoxy according to the invention may further comprise the steps:
1. by said formula ratio preparation fugitive constituent mixed solvent;
2. the preparation of A component: epoxy resin is added in the high speed dispersion still, stir the adding wetting dispersing agent; Add reactive thinner, stir; Add anti-settling agent and talcum powder, white titanium pigment, it is 40～50 μ m that high-speed stirring is dispersed to fineness, is warming up to 60～70 ℃, keeps 15～25 minutes, adds said volatile matter mixed solvent again, obtains the A component;
3. the preparation of B component: in cashew nut oil modified amine curing agent, add epoxy hardener promotor, stir, obtain the B component.
The A component and the B component of the thick slurry lacquer of low-temperature quick-dry type epoxy of the present invention are mixed by said mass ratio; Preparing method according to paint film among the GB/T 1727 prepares paint film; And measure according to GB/T 1728 methods; The thick slurry lacquer of low-temperature quick-dry type epoxy provided by the invention is in the time of-10 ℃, and surface drying 1 hour was done solid work 4 hours.Dry maintenance is 48 hours under the room temperature condition, carries out each item Performance Detection, and the performance of this paint film is following:
Coating color and outward appearance: the regulation according to GB/T9761 detects, the requirement of conformance with standard model, and fullness ratio is good.
Sticking power: according to the regulation of GB/T1720, use cross-hatching to test, assay is all more than 1 grade.
Snappiness: the regulation according to ASTM D 5034 detects, and its elongation at break test is 25%-35%.
Impact: the regulation according to GB/T1732 detects, its shock-resistance≤50cm.
Acid resistance: the regulation according to GB/T9274 detects, anti-5% sulphuric acid soln 168 hours, paint film no change.
Alkali resistance: the regulation according to GB/T9274 detects, anti-5% sodium hydroxide solution 168 hours, paint film no change.
Salt tolerance: the regulation according to GB/T9274 detects, anti-3% sodium chloride solution 30 days, paint film no change.
Volume contains admittedly: the method according to GB/T 9272 is measured, and volume contains admittedly >=and 80%.
Simultaneously, adopt airless spraying, test according to GB/T 1764 methods; One-pass film-forming can reach 120-160 μ m; With this model maintenance after 7 days, detect according to the regulation of GB/T 5210, use U.S. DEFEL SKO company; Model is that Posi Test AT pull-out test appearance detects, and sticking power is 13-15MPa.
The thick slurry lacquer of the low-temperature quick-dry type epoxy that uses method provided by the invention to produce, its technical indicator is seen table 1.
Table 1: the thick slurry lacquer of low-temperature quick-dry type epoxy technical indicator
The thick slurry lacquer of the low-temperature quick-dry type epoxy that uses the inventive method to produce, the present situation that the epoxy-based lacquers that breaks traditions low temperature is not done can realize fast setting under-10 ℃ of environment, time of drying is short, can be used for the construction of cold district in winter; One-pass film-forming is thick simultaneously, has effectively improved the throughput and the working efficiency of coating application.And workability is excellent; Can effectively prolong the work-ing life of base material after the application; Can be widely used in the priming paint or the intermediate coat of steelwork and other surface corrosion protective coating systems under the atomospheric corrosion environment, this product can use separately, also can the multiple coating system of supporting composition.
Embodiment
Below in conjunction with specific embodiment the present invention is elaborated.
Embodiment one:
1, the prescription of the thick slurry lacquer of low-temperature quick-dry type epoxy
The thick slurry lacquer of the low-temperature quick-dry type epoxy of this case study on implementation, A component: B component=2:1
Wherein, A component: epoxy resin 30.0kg, wetting dispersing agent 0.5kg, polyamide wax anti-settling agent 1.5kg, fugitive constituent mixed solvent 15.0kg, aliphatic glycidyl ether reactive thinner 7.5kg, Rutile type Titanium Dioxide 4.5kg, talcum powder 41.0kg.
Fugitive constituent mixed solvent: mix by phenylcarbinol 20kg, pimelinketone 20kg and YLENE 60kg.
The cashew nut oil modified amine curing agent of B component: 100kg.
2, the preparation method of the thick slurry lacquer of low-temperature quick-dry type epoxy
The preparation method of the thick slurry lacquer of present embodiment low-temperature quick-dry type epoxy may further comprise the steps:
1. prepare the fugitive constituent mixed solvent: with phenylcarbinol 20kg, pimelinketone 20kg, YLENE 60kg, mixing stirs, and is subsequent use.
2. the preparation of A component: the E-51 epoxy resin 30.0kg that takes by weighing the production of Nantong resin processing plant adds in the high speed dispersion still, stirs to add wetting dispersing agent 0.5kg; Add aliphatic glycidyl ether reactive thinner 7.5kg, stir; Add polyamide wax anti-settling agent 1.5kg, talcum powder 41.0kg, Rutile type Titanium Dioxide 4.5kg, it is 50 μ m that high-speed stirring is dispersed to fineness, is warming up to 60 ℃, keeps 25 minutes, adds fugitive constituent mixed solvent 15.0kg again, obtains the A component;
3. the preparation of B component: the B component is the cashew nut oil modified amine hardener 100kg of JT-6025 that Shanghai Jingtian New Materials Technology Co., Ltd. produces.
The thick slurry lacquer of low-temperature quick-dry type epoxy with the present embodiment preparation; According to the A component: the proportioning of B component=2:1 is joined lacquer; And prepare paint film according to the preparation method of paint film among the GB/T 1727, and to measure according to GB/T 1728 methods, the thick slurry lacquer of low-temperature quick-dry type epoxy provided by the invention is in the time of-10 ℃; Surface drying 1 hour was done solid work 4 hours.Dry maintenance is 48 hours under the room temperature condition, carries out each item Performance Detection, and the performance of this paint film is following:
Coating color and outward appearance: the regulation according to GB/T9761 detects, the requirement of conformance with standard model, and fullness ratio is good.
Sticking power: according to the regulation of GB/T1720, use cross-hatching to test, assay is all more than 1 grade.
Snappiness: the regulation according to ASTM D 5034 detects, and its elongation at break test is 27.8%.
Impact: the regulation according to GB/T1732 detects, its shock-resistance≤50cm.
Acid resistance: the regulation according to GB/T9274 detects, anti-5% sulphuric acid soln 168 hours, paint film no change.
Alkali resistance: the regulation according to GB/T9274 detects, anti-5% sodium hydroxide solution 168 hours, paint film no change.
Salt tolerance: the regulation according to GB/T9274 detects, anti-3% sodium chloride solution 30 days, paint film no change.
Volume contains admittedly: the method according to GB/T 9272 is measured, and it is 81.4% that volume contains admittedly.
Simultaneously, adopt airless spraying, test according to GB/T 1764 methods; One-pass film-forming can reach about 130 μ m; With this model maintenance after 7 days, detect according to the regulation of GB/T 5210, use U.S. DEFEL SKO company; Model is that Posi Test AT pull-out test appearance detects, and sticking power is 13.7MPa.
Embodiment two
1, the prescription of the thick slurry lacquer of low-temperature quick-dry type epoxy
The thick slurry lacquer of the low-temperature quick-dry type epoxy of this case study on implementation, A component: B component=4:1
Wherein, the A component is: epoxy resin 35.0kg, wetting dispersing agent 0.7kg, polyamide wax anti-settling agent 1.3kg, fugitive constituent mixed solvent 12.5kg, aliphatic glycidyl ether reactive thinner 10.0kg, Rutile type Titanium Dioxide 8.5kg, talcum powder 32.0kg.
Fugitive constituent mixed solvent: mix by phenylcarbinol 30kg, pimelinketone 15kg and YLENE 55kg.
The B component is: cashew nut oil modified amine curing agent 95kg, epoxy hardener promotor 5kg mix.
2, the preparation method of the thick slurry lacquer of low-temperature quick-dry type epoxy
The preparation method of the thick slurry lacquer of present embodiment low-temperature quick-dry type epoxy may further comprise the steps:
1. prepare the fugitive constituent mixed solvent: with phenylcarbinol 30kg, pimelinketone 15kg, YLENE 55kg, mixing stirs, and is subsequent use.
2. the preparation of A component: the E-51 epoxy resin 35.0kg that takes by weighing the production of Nantong resin processing plant adds in the high speed dispersion still, stirs to add wetting dispersing agent 0.7kg; Add aliphatic glycidyl ether reactive thinner 10.0kg, stir; Add polyamide wax anti-settling agent 1.3kg, Rutile type Titanium Dioxide 8.5kg, talcum powder 32.0kg, it is 45 μ m that high-speed stirring is dispersed to fineness, is warming up to 65 ℃, keeps 20 minutes, adds fugitive constituent mixed solvent 12.5kg again, obtains the A component;
3. the preparation of B component: take by weighing the cashew nut oil modified amine hardener 95kg of JT-6025 that Shanghai Jingtian New Materials Technology Co., Ltd. produces, add the D-0592 epoxy hardener promotor 5kg that Junjiang Science and Technology Co Ltd, Shanghai produces, stir, obtain the B component.
The thick slurry lacquer of low-temperature quick-dry type epoxy with the present embodiment preparation; According to the A component: the proportioning of B component=4:1 is joined lacquer; And prepare paint film according to the preparation method of paint film among the GB/T 1727, and to measure according to GB/T 1728 methods, the thick slurry lacquer of low-temperature quick-dry type epoxy provided by the invention is in the time of-10 ℃; Surface drying 0.8 hour was done solid work 3.9 hours.Dry maintenance is 48 hours under the room temperature condition, carries out each item Performance Detection, and the performance of this paint film is following:
Coating color and outward appearance: the regulation according to GB/T9761 detects, the requirement of conformance with standard model, and fullness ratio is good.
Sticking power: according to the regulation of GB/T1720, use cross-hatching to test, assay is all more than 1 grade.
Snappiness: the regulation according to ASTM D 5034 detects, and its elongation at break test is 29.3%.
Impact: the regulation according to GB/T1732 detects, its shock-resistance≤50cm.
Acid resistance: the regulation according to GB/T9274 detects, anti-5% sulphuric acid soln 168 hours, paint film no change.
Alkali resistance: the regulation according to GB/T9274 detects, anti-5% sodium hydroxide solution 168 hours, paint film no change.
Salt tolerance: the regulation according to GB/T9274 detects, anti-3% sodium chloride solution 30 days, paint film no change.
Volume contains admittedly: the method according to GB/T 9272 is measured, and it is 81.7% that volume contains admittedly.
Simultaneously, adopt airless spraying, test according to GB/T 1764 methods; One-pass film-forming can reach about 140 μ m; With this model maintenance after 7 days, detect according to the regulation of GB/T 5210, use U.S. DEFEL SKO company; Model is that Posi Test AT pull-out test appearance detects, and sticking power is 14.4MPa.
Embodiment three
1, the prescription of the thick slurry lacquer of low-temperature quick-dry type epoxy
The thick slurry lacquer of the low-temperature quick-dry type epoxy of this case study on implementation, A component: B component=6:1
Wherein, the A component is: epoxy resin 40kg, wetting dispersing agent 1.0kg, polyethylene wax anti-settling agent 1.0kg, fugitive constituent mixed solvent 10.0kg, aliphatic glycidyl ether reactive thinner 5.0kg, Rutile type Titanium Dioxide 6.5kg, talcum powder 36.5kg.
Fugitive constituent mixed solvent: mix by phenylcarbinol 25kg, pimelinketone 17.5kg and YLENE 57.5kg.
The B component is: cashew nut oil modified amine curing agent 90kg, epoxy hardener promotor 10kg mix.
2, the preparation method of the thick slurry lacquer of low-temperature quick-dry type epoxy
The preparation method of the thick slurry lacquer of present embodiment low-temperature quick-dry type epoxy may further comprise the steps:
1. prepare the fugitive constituent mixed solvent: with phenylcarbinol 25kg, pimelinketone 17.5kg, YLENE 57.5kg, mix, subsequent use.
2. the preparation of A component: the E-51 epoxy resin 40kg that takes by weighing the production of Nantong resin processing plant adds in the high speed dispersion still, stirs to add wetting dispersing agent 1.0kg; Add aliphatic glycidyl ether reactive thinner 5.0kg, stir; Add polyethylene wax anti-settling agent 1.0kg, Rutile type Titanium Dioxide 6.5kg, talcum powder 36.5kg, it is 40 μ m that high-speed stirring is dispersed to fineness, is warming up to 70 ℃, keeps 15 minutes, adds fugitive constituent mixed solvent 10.0kg again, obtains the A component;
3. the preparation of B component: take by weighing the cashew nut oil modified amine hardener 90kg of JT-6025 that Shanghai Jingtian New Materials Technology Co., Ltd. produces; Add the D-0592 epoxy hardener promotor 10kg that Junjiang Science and Technology Co Ltd, Shanghai produces; Stir, obtain the B component.
The thick slurry lacquer of low-temperature quick-dry type epoxy with the present embodiment preparation; According to the A component: the proportioning of B component=6:1 is joined lacquer; And prepare paint film according to the preparation method of paint film among the GB/T 1727, and to measure according to GB/T 1728 methods, the thick slurry lacquer of low-temperature quick-dry type epoxy provided by the invention is in the time of-10 ℃; Surface drying 1 hour was done solid work 4 hours.Dry maintenance is 48 hours under the room temperature condition, carries out each item Performance Detection, and the performance of this paint film is following:
Coating color and outward appearance: the regulation according to GB/T9761 detects, the requirement of conformance with standard model, and fullness ratio is good.
Sticking power: according to the regulation of GB/T1720, use cross-hatching to test, assay is all more than 1 grade.
Snappiness: the regulation according to ASTM D 5034 detects, and its elongation at break test is 28.4%.
Impact: the regulation according to GB/T1732 detects, its shock-resistance≤50cm.
Acid resistance: the regulation according to GB/T9274 detects, anti-5% sulphuric acid soln 168 hours, paint film no change.
Alkali resistance: the regulation according to GB/T9274 detects, anti-5% sodium hydroxide solution 168 hours, paint film no change.
Salt tolerance: the regulation according to GB/T9274 detects, anti-3% sodium chloride solution 30 days, paint film no change.
Volume contains admittedly: the method according to GB/T 9272 is measured, and it is 81.2% that volume contains admittedly.
Simultaneously, adopt airless spraying, test according to GB/T 1764 methods; One-pass film-forming can reach about 130 μ m; With this model maintenance after 7 days, detect according to the regulation of GB/T 5210, use U.S. DEFEL SKO company; Model is that Posi Test AT pull-out test appearance detects, and sticking power is 14.8MPa.
Above-described only is preferred embodiment of the present invention.Should be understood that for the person of ordinary skill of the art, under teachings provided by the present invention, can also make other equivalent modifications and improvement, also should be regarded as protection scope of the present invention.
Claims (6)
1. the thick slurry lacquer of low-temperature quick-dry type epoxy comprises A component and B component, and the mass ratio of said A component and B component is 6:1～2:1;
Said A component forms by the feedstock production of following mass percent: epoxy resin 30～40%, wetting dispersing agent 0.5～1.0%, anti-settling agent 1.0～1.5%, fugitive constituent mixed solvent 10～15%, reactive thinner 5～10%, white titanium pigment 4.5～8.5%, talcum powder 32～41%;
Said B component forms by the feedstock production of following mass percent: cashew nut oil modified amine curing agent 90～100%, epoxy hardener promotor 0～10%.
2. according to the thick slurry lacquer of the said low-temperature quick-dry type of claim 1 epoxy, it is characterized in that said fugitive constituent mixed solvent forms by the feedstock production of following mass percent: phenylcarbinol 20～30%, pimelinketone 15～20%, YLENE 50～60%.
3. according to the thick slurry lacquer of the said low-temperature quick-dry type of claim 1 epoxy, it is characterized in that said anti-settling agent is polyamide wax or polyethylene wax anti-settling agent.
4. according to the thick slurry lacquer of the said low-temperature quick-dry type of claim 1 epoxy, it is characterized in that said reactive thinner is the aliphatic glycidyl ether reactive thinner.
5. according to the thick slurry lacquer of the said low-temperature quick-dry type of claim 1 epoxy, it is characterized in that said white titanium pigment is a Rutile type Titanium Dioxide.
6. according to the preparation method of the thick slurry lacquer of the said low-temperature quick-dry type of claim 1 epoxy, it is characterized in that, may further comprise the steps:
1. by said formula ratio preparation fugitive constituent mixed solvent;
2. the preparation of A component: epoxy resin is added in the high speed dispersion still, stir the adding wetting dispersing agent; Add reactive thinner, stir; Add anti-settling agent and talcum powder, white titanium pigment, it is 40～50 μ m that high-speed stirring is dispersed to fineness, is warming up to 60～70 ℃, keeps 15～25 minutes, adds said volatile matter mixed solvent again, obtains the A component;
3. the preparation of B component: in cashew nut oil modified amine curing agent, add epoxy hardener promotor, stir, obtain the B component.
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| CN110423506A (en) * | 2019-07-25 | 2019-11-08 | 中国舰船研究设计中心 | One kind can low-temperature fast-curing Radar Absorbing Coating and preparation method thereof |
| CN113045919A (en) * | 2021-03-23 | 2021-06-29 | 石家庄市油漆厂 | Low-temperature curing high-solid epoxy coating and preparation method thereof |
| CN113045919B (en) * | 2021-03-23 | 2022-04-05 | 石家庄市油漆厂 | Low-temperature curing high-solid epoxy coating and preparation method thereof |
| CN113402950A (en) * | 2021-07-13 | 2021-09-17 | 安徽江锐新材料有限公司 | Quick-drying epoxy thick paste type primer and preparation process thereof |
| CN115141532A (en) * | 2022-08-17 | 2022-10-04 | 广州市雨田实业有限公司 | Low-VOC (volatile organic compound) safe and environment-friendly water-based paint and preparation method thereof |
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