CN101575470A - Modified high chlorinated polyethylene coating, preparation method and application thereof - Google Patents
Modified high chlorinated polyethylene coating, preparation method and application thereof Download PDFInfo
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- CN101575470A CN101575470A CNA2009100328693A CN200910032869A CN101575470A CN 101575470 A CN101575470 A CN 101575470A CN A2009100328693 A CNA2009100328693 A CN A2009100328693A CN 200910032869 A CN200910032869 A CN 200910032869A CN 101575470 A CN101575470 A CN 101575470A
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Abstract
The invention discloses a modified high chlorinated polyethylene coating, a preparation method and application thereof. The coating is prepared from the following raw materials by weight percentage: 20 to 30 percent of high chlorinated polyethylene resin, 5 to 15 percent of epoxy acrylic resin, 40 to 50 percent of diluting agent, 10 to 15 percent of TiO2, 0.5 to 1 percent of anti-settling agent, and 0.3 to 1 percent of flatting agent. An anticorrosion coating prepared from the modified high chlorinated polyethylene coating has no holes and voids, and experimental research shows that the modified high chlorinated polyethylene coating has good corrosion-resistant property, toughness and mechanical property and particularly has better performances of water resistance, salt water resistance, acid and alkali resistance, weather resistance and atmospheric corrosion resistance than the prior coating. The preparation method has the advantages of reasonable process, strong maneuverability, high production efficiency and low energy consumption, ensures that finished products obtained through the preparation have high qualification rate, and can realize industrialized large scale production.
Description
Technical field
The present invention relates to a kind of coating, be specifically related to high-chlorinated polyethylene coating of a kind of epoxy acrylic modification and its production and application.
Background technology
HCPE of the prior art (HCPE) is the unregulated polymer that is formed through chlorination by the polyethylene hydrocarbon; do not contain two keys in the molecule; and the chlorine atom is random distribution; HCPE has excellent water tolerance energy and good ozone resistance; flame retardant resistance; advantages such as chemical-resistant; the HCPE resin is for steam; oxygen and ionic perviousness are low; therefore can stop the infiltration of corrosive medium effectively; thereby ground is played the effect of good isolation close and protect; but it belongs to thermoplastic resin; it films more crisp; sticking power and less stable; need add flexible resin in actual applications to improve film performance, improve the weather resistance of filming, as increase its guarantor's look and gloss retention energy.The HCPE resin dissolves in aromatic hydrocarbons, ester class, ethylene glycol etc., be insoluble to ethanol and 200# solvent, diluting solvent of generally using such as ester class, ketone cost are higher, the low boiling point arene kind solvent volatility is big, toxicity is big, and because the volatilization of solvent makes coating surface be prone to defectives such as " pin hole, tangerine peels ", make the reductions such as antiseptic property, stability, toughness and mechanical property of filming in the film process.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve the deficiencies in the prior art, provide a kind of preservative property, toughness and mechanical property good, and the high-chlorinated polyethylene coating of the epoxy acrylic modification of environmental protection, low toxicity, another object of the present invention provide the preparation method of this modified high chlorinated polyethylene coating and it is in the application that is used for preparing corrosion protection coating.
Technical scheme: in order to realize purpose of the present invention, modified high chlorinated polyethylene coating provided by the invention is made by following raw materials by weight percent: HCPE 20～30%, epoxy acrylic resin 5～15%, thinner 40～50%, TiO210～15%, anti-settling agent 0.5～1%, flow agent 0.3～1%.
As preferred version, modified high chlorinated polyethylene coating provided by the invention is made by following raw materials by weight percent: HCPE 20～25%, epoxy acrylic resin 5～10%, thinner 45～50%, TiO2 12～15%, anti-settling agent 0.8～1%, flow agent 0.6～1%.
As another preferred version, modified high chlorinated polyethylene coating provided by the invention is made by following raw materials by weight percent: HCPE 28%, epoxy acrylic resin 11%, thinner 48%, TiO2 12%, anti-settling agent 0.6%, flow agent 0.4%.
Modified high chlorinated polyethylene coating provided by the invention, wherein thinner is the mixed solvent of high boiling aromatic hydrocarbon solvent and dimethylbenzene, wherein high boiling aromatic hydrocarbon solvent is mixed type dibasic acid dimethyl ester (DBE), the mixed volume ratio of mixed type dibasic acid dimethyl ester (DBE) and dimethylbenzene is 3: 5 to 3: 10, preferred 3: 7, mixed type dibasic acid dimethyl ester main component is a Methyl glutarate, dimethyl adipate, dimethyl succinate.Wherein titanium dioxide TiO2 is a rutile TiO 2, and anti-settling agent is organobentonite 881-B, and flow agent is a flow agent 354.
The preparation method of modified high chlorinated polyethylene coating of the present invention may further comprise the steps:
1. choose HCPE, epoxy acrylic resin in proportion, it was standby to get intermediate raw material to mixing in 1 to 3 hour for high speed dispersion;
2. get the intermediate raw material that 1. step obtains, add rutile TiO 2 in proportion, it was standby to get intermediate product to mixing in 1 to 3 hour for high speed dispersion;
3. get the intermediate product that 2. step obtains, add thinner, anti-settling agent, flow agent in proportion, high speed dispersion was ground to mixing in 1 to 3 hour, detected particle diameter, filtration.
Among the preparation method of modified high chlorinated polyethylene coating provided by the invention, the weight percent of each raw material is: HCPE 20～25%, epoxy acrylic resin 5～10%, thinner 40～50%, TiO2 10～15%, anti-settling agent 0.5～1%, flow agent 0.3～1%.
Wherein thinner is the mixed solvent of high boiling aromatic hydrocarbon solvent and dimethylbenzene, wherein high boiling aromatic hydrocarbon solvent can be mixed type dibasic acid dimethyl ester (DBE), the blending ratio of high boiling aromatic hydrocarbon solvent and dimethylbenzene can be 3: 5 to 3: 10, preferred 3: 7, titanium dioxide TiO2 is a rutile TiO 2, anti-settling agent is organobentonite 881-B, and flow agent is a flow agent 354.
Modified high chlorinated polyethylene coating of the present invention, as preferably, step 1. the high speed dispersive time be 1 hour, 2. 3. the time of high speed dispersion is 2 hours to step with step.4. the sieve particle diameter of the modified high chlorinated polyethylene coating that obtains of step is 1 to 35 μ m.
Modified high chlorinated polyethylene coating of the present invention is in the application of preparation in the corrosion protection coating, specifically can be used for preparing the application of the corrosion protection coating of steel construction, bridge, freight container, electromechanical equipment, underground pipeline, storage tank and chemical industry factory building etc.
Beneficial effect: modified high chlorinated polyethylene coating provided by the invention is compared with coating of the prior art and is had the following advantages:
1, the starting material of the high-chlorinated polyethylene coating of epoxy acrylic resin modification provided by the invention are easy to get, and each proportioning raw materials of modified high chlorinated polyethylene coating is scientific and reasonable.
2, modified high chlorinated polyethylene coating provided by the invention, filmogen is selected for use, on the basis of HCPE, add the epoxy acrylic resin modification, the consistency of two interlaminar resins, stability, the gloss and the weather resistance of finish paint play synergy, the corrosion protection coating for preparing with modified high chlorinated polyethylene coating provided by the present invention does not have hole, the space, crackle, show to have good preservative property through experimental study, toughness and mechanical property, particularly water-fast, salt water resistance, acid and alkali-resistance, the performance of weathering resistance and atmospheric corrosion resistance is more excellent than conventional coating
3, modified high chlorinated polyethylene coating provided by the invention, the mixed solvent that adopts high boiling aromatic hydrocarbon solvent and dimethylbenzene is as diluting solvent, the mixed solvent system rate of volatilization is slow, and dissolving power is strong, can adapt to different weather requirements, the mixed solvent of high boiling point aromatic hydrocarbons and dimethylbenzene is at dried coating film, the high dissolution ability be can both keep in the whole process of solvent evaporates, film no tangerine peel, hole made, and glossy, reduced the rate of volatilization of solvent systems, environmental protection, low toxicity.
4, the preparation method of modified high chlorinated polyethylene coating provided by the present invention, technology is reasonable, and is workable, the production efficiency height, energy consumption is low, and the product qualified rate height for preparing can be realized industrialized production.
Embodiment:
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment 1
1, the weight proportion of modified high chlorinated polyethylene coating: HCPE 300 grams, epoxy acrylic resin 150 grams, volume ratio are 3: 7 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 500 grams, rutile titanium dioxide 150 grams, anti-settling agent 10 grams, 354 type flow agents, 10 grams of dimethylbenzene.
2, the preparation of modified high chlorinated polyethylene coating:
1. choose above HCPE 300 grams, epoxy acrylic resin 150 grams, it was standby to get intermediate raw material to mixing in 1 hour for high speed dispersion;
2. get the intermediate raw material that 1. step obtains, add rutile TiO 2 150 grams, it was standby to get intermediate product to mixing in 2 hours for high speed dispersion;
3. get the intermediate raw material that 2. step obtains, adding volume ratio is 3: 7 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 500 grams, anti-settling agent 10 grams, 354 type flow agents, 10 grams of dimethylbenzene, high speed dispersion 2 hours is to mixing, grind, cross the sieve of 30 μ m, detect particle diameter, packing promptly.
3, get 2 modified high chlorinated polyethylene coatings that prepare and carry out the mechanical surface coating, experiment detects its performance then, and experimental result is as shown in table 1:
The performance test results of table 1 modified high chlorinated polyethylene coating coating
| Test item | Technical indicator | Detected result | |
| 1 | Surface drying/h | ≤0.5 | 0.4 |
| 2 | Do solid work/h | ≤6 | 5 |
| 3 | Sticking power/level | 1 | 1 |
| 4 | Shock-resistance/cm | 50 | 50 |
| 5 | Snappiness/mm | 1 | 1 |
| 6 | Water tolerance | 30 days no changes | 30 days no changes |
| 7 | Salt fog resistance | 200 hours no changes | 200 hours no changes |
| 8 | Anti-10%H2SO4 | 30 days no changes | 30 days no changes |
| 9 | Anti-10%NaOH | 30 days no changes | 30 days no changes |
| 10 | Salt water resistance 5%NaCL | 30 days no changes | 30 days no changes |
Shown that by table 1 laboratory test results modified high chlorinated polyethylene coating provided by the invention has good water-fast, acidproof, alkaline resistance properties and has stronger toughness and mechanical property, and sticking power is good, gel time is suitable.
Embodiment 2
1, the weight proportion of modified high chlorinated polyethylene coating: HCPE 200 grams, epoxy acrylic resin 50 grams, volume ratio are 3: 5 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 400 grams, rutile titanium dioxide 100 grams, anti-settling agent 5 grams, 354 type flow agents, 3 grams of dimethylbenzene.
2, the preparation of modified high chlorinated polyethylene coating:
1. choose above HCPE 200 grams, epoxy acrylic resin 50 grams, it was standby to get intermediate raw material to mixing in 1 hour for high speed dispersion;
2. get the intermediate raw material that 1. step obtains, add rutile TiO 2 100 grams, it was standby to get intermediate product to mixing in 2 hours for high speed dispersion;
3. get the intermediate raw material that 2. step obtains, adding volume ratio is that 3: 5 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 400 grams, anti-settling agent 5 grams, the 354 type flow agents 3 of dimethylbenzene restrain, and high speed dispersion 2 hours is to mixing, grind, cross the sieve of 25 μ m, detect particle diameter, packing promptly.
3, the terrace paint of getting 2 high-solid levels that make carries out the ground finishing coat, and experiment detects its performance then, and experimental result is as shown in table 2:
3, get 2 modified high chlorinated polyethylene coatings that prepare and carry out the mechanical surface coating, experiment detects its performance then, and experimental result is as shown in table 2:
The performance test results of table 2 modified high chlorinated polyethylene coating coating
| Test item | Technical indicator | Detected result | |
| 1 | Surface drying/h | ≤0.5 | 0.45 |
| 2 | Do solid work/h | ≤6 | 5.6 |
| 3 | Sticking power/level | 1 | 1 |
| 4 | Shock-resistance/cm | 50 | 50 |
| 5 | Snappiness/mm | 1 | 1 |
| 6 | Water tolerance | 30 days no changes | 30 days no changes |
| 7 | Salt fog resistance | 200 hours no changes | 200 hours no changes |
| 8 | Anti-10%H2SO4 | 30 days no changes | 30 days no changes |
| 9 | Anti-10%NaOH | 30 days no changes | 30 days no changes |
| 10 | Salt water resistance 5%NaCL | 30 days no changes | 30 days no changes |
Embodiment 3
1, the weight proportion of modified high chlorinated polyethylene coating: HCPE 280 grams, epoxy acrylic resin 110 grams, volume ratio are 3: 10 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 480 grams, rutile titanium dioxide 120 grams, anti-settling agent 6 grams, 354 type flow agents, 4 grams of dimethylbenzene.
2, the preparation of modified high chlorinated polyethylene coating:
1. choose above HCPE 280 grams, epoxy acrylic resin 110 grams, it was standby to get intermediate raw material to mixing in 3 hours for high speed dispersion;
2. get the intermediate raw material that 1. step obtains, add rutile TiO 2 120 grams, it was standby to get intermediate product to mixing in 1 hour for high speed dispersion;
3. get the intermediate raw material that 2. step obtains, adding volume ratio is that 3: 10 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 480 grams, anti-settling agent 6 grams, the 354 type flow agents 4 of dimethylbenzene restrain, and high speed dispersion 1 hour is to mixing, grind, cross the sieve of 15 μ m, detect particle diameter, packing promptly.
3, the terrace paint of getting 2 high-solid levels that make carries out the ground finishing coat, and experiment detects its performance then, and experimental result is as shown in table 2:
3, get 2 modified high chlorinated polyethylene coatings that prepare and carry out the mechanical surface coating, experiment detects its performance then, and experimental result is as shown in table 3:
The performance test results of table 3 modified high chlorinated polyethylene coating coating
| Test item | Technical indicator | Detected result | |
| 1 | Surface drying/h | ≤0.5 | 0.38 |
| 2 | Do solid work/h | ≤6 | 4.7 |
| 3 | Sticking power/level | 1 | 1 |
| 4 | Shock-resistance/cm | 50 | 60 |
| 5 | Snappiness/mm | 1 | 1 |
| 6 | Water tolerance | 30 days no changes | 30 days no changes |
| 7 | Salt fog resistance | 200 hours no changes | 200 hours no changes |
| 8 | Anti-10%H2SO4 | 30 days no changes | 30 days no changes |
| 9 | Anti-10%NaOH | 30 days no changes | 30 days no changes |
| 10 | Salt water resistance 5%NaCL | 30 days no changes | 30 days no changes |
Embodiment 4
1, the weight proportion of modified high chlorinated polyethylene coating: HCPE 280 grams, epoxy acrylic resin 90 grams, volume ratio are 3: 7 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 430 grams, rutile titanium dioxide 130 grams, anti-settling agent 8 grams, 354 type flow agents, 9 grams of dimethylbenzene.
2, the preparation of modified high chlorinated polyethylene coating:
1. choose above HCPE 280 grams, epoxy acrylic resin 90 grams, it was standby to get intermediate raw material to mixing in 2 hours for high speed dispersion;
2. get the intermediate raw material that 1. step obtains, add rutile TiO 2 130 grams, it was standby to get intermediate product to mixing in 3 hours for high speed dispersion;
3. get the intermediate raw material that 2. step obtains, adding volume ratio is that 3: 7 the mixed type dibasic acid dimethyl ester (DBE) and mixed solvent 430 grams, anti-settling agent 8 grams, the 354 type flow agents 9 of dimethylbenzene restrain, and high speed dispersion 1 hour is to mixing, grind, cross the sieve of 10 μ m, detect particle diameter, packing promptly.
3, the terrace paint of getting 2 high-solid levels that make carries out the ground finishing coat, and experiment detects its performance then, and experimental result is as shown in table 2:
3, get 2 modified high chlorinated polyethylene coatings that prepare and carry out the mechanical surface coating, experiment detects its performance then, and experimental result is as shown in table 4:
The performance test results of table 4 modified high chlorinated polyethylene coating coating
| Test item | Technical indicator | Detected result | |
| 1 | Surface drying/h | ≤0.5 | 0.35 |
| 2 | Do solid work/h | ≤6 | 3.9 |
| 3 | Sticking power/level | 1 | 1 |
| 4 | Shock-resistance/cm | 50 | 70 |
| 5 | Snappiness/mm | 1 | 1 |
| 6 | Water tolerance | 30 days no changes | 30 days no changes |
| 7 | Salt fog resistance | 200 hours no changes | 200 hours no changes |
| 8 | Anti-10%H2SO4 | 30 days no changes | 30 days no changes |
| 9 | Anti-10%NaOH | 30 days no changes | 30 days no changes |
| 10 | Salt water resistance 5%NaCL | 30 days no changes | 30 days no changes |
Draw by above experiment, each proportioning raw materials of modified high chlorinated polyethylene coating provided by the invention is scientific and reasonable, the coating that obtains with modified high chlorinated polyethylene coating application provided by the invention detects performance index requirement all up to specification through multi-performance index, have well water-fast, acidproof, alkaline resistance properties and have stronger toughness and mechanical property and stability, and the gel time of coating is suitable, environmental protection, low toxicity, being expected to exploitation becomes protective system of new generation.
Claims (10)
1, a kind of modified high chlorinated polyethylene coating, it is characterized in that it is made by following raw materials by weight percent: HCPE 20～30%, epoxy acrylic resin 5～15%, thinner 40～50%, TiO2 10～15%, anti-settling agent 0.5～1%, flow agent 0.3～1%.
2, modified high chlorinated polyethylene coating according to claim 1, it is characterized in that it is made by following raw materials by weight percent: HCPE 20～25%, epoxy acrylic resin 5～10%, thinner 45～50%, TiO212～15%, anti-settling agent 0.8～1%, flow agent 0.6～1%.
3, modified high chlorinated polyethylene coating according to claim 1, it is characterized in that it is made by following raw materials by weight percent: HCPE 28%, epoxy acrylic resin 11%, thinner 48%, TiO2 12%, anti-settling agent 0.6%, flow agent 0.4%.
According to each described modified high chlorinated polyethylene coating of claim 1 to 3, it is characterized in that 4, described thinner is the mixed solvent of high boiling aromatic hydrocarbon solvent and dimethylbenzene.
5, modified high chlorinated polyethylene coating according to claim 4 is characterized in that, described high boiling aromatic hydrocarbon solvent is the mixed type dibasic acid dimethyl ester, and the ratio of mixed type dibasic acid dimethyl ester and dimethylbenzene is 3: 5 to 3: 10.
6, modified high chlorinated polyethylene coating according to claim 4 is characterized in that, described TiO2 is a rutile TiO 2, and anti-settling agent is that organobentonite, flow agent are flow agent 354.
7, a kind of method for preparing each described modified high chlorinated polyethylene coating of claim 1 to 3 is characterized in that may further comprise the steps:
1. in the described ratio of claim 1, choose HCPE, epoxy acrylic resin, it was standby to get intermediate raw material to mixing in 1 to 3 hour for high speed dispersion;
2. get the intermediate raw material that 1. step obtains, add rutile TiO 2 in the described ratio of claim 1, it was standby to get intermediate product to mixing in 1 to 3 hour for high speed dispersion;
3. get the intermediate product that 2. step obtains, add thinner, anti-settling agent, flow agent in the described ratio of claim 1, high speed dispersion was ground to mixing in 1 to 3 hour, filtered, and detected particle diameter.
8, the preparation method of modified high chlorinated polyethylene coating according to claim 7 is characterized in that, step 1. the time of high speed dispersion be 1 hour, 2. 3. the time of high speed dispersion is 2 hours to step with step.
9, the preparation method of modified high chlorinated polyethylene coating according to claim 7 is characterized in that, 3. the sieve particle diameter of the modified high chlorinated polyethylene coating that obtains of step is 1 to 35 μ m.
10, the application of each described modified high chlorinated polyethylene coating of claim 1 to 3 in the preparation corrosion protection coating.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838489A (en) * | 2010-05-31 | 2010-09-22 | 刘昆虎 | Undersurface syncretic anti-corrosion paint |
| CN102993836A (en) * | 2012-11-23 | 2013-03-27 | 高凡 | Preparation method of novel aqueous acrylic acid modified high chlorinated polyethylene anticorrosive coating |
| CN102993837A (en) * | 2012-11-23 | 2013-03-27 | 高凡 | Novel aqueous acrylic acid modified high chlorinated polyethylene anticorrosive coating |
| CN103382348A (en) * | 2013-07-01 | 2013-11-06 | 吴江市物华五金制品有限公司 | Quick-drying anticorrosion bottom coating for steel materials and preparation method thereof |
| CN103555077A (en) * | 2013-10-14 | 2014-02-05 | 浙江永固为华涂料有限公司 | Fluororesin modified high-chlorinated polyethylene fireproof anticorrosion composite coating |
| CN105295571A (en) * | 2015-10-21 | 2016-02-03 | 和县科嘉阀门铸造有限公司 | Valve hand wheel coating |
| CN106085217A (en) * | 2016-07-14 | 2016-11-09 | 苏州诚晟信息技术有限公司 | A kind of heat resistance coating and preparation thereof and application process |
| CN106634301A (en) * | 2016-12-05 | 2017-05-10 | 天长市优信电器设备有限公司 | High-toughness coating of aluminum charger case |
| CN117567819A (en) * | 2024-01-15 | 2024-02-20 | 潍坊市兴源防水材料股份有限公司 | Super weather-proof chlorinated polyethylene waterproof coiled material |
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2009
- 2009-06-04 CN CNA2009100328693A patent/CN101575470A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838489A (en) * | 2010-05-31 | 2010-09-22 | 刘昆虎 | Undersurface syncretic anti-corrosion paint |
| CN101838489B (en) * | 2010-05-31 | 2012-01-04 | 刘昆虎 | Undersurface syncretic anti-corrosion paint |
| CN102993837B (en) * | 2012-11-23 | 2015-08-19 | 江苏瑞吉达建材科技有限公司 | Aqueous acrylic modified high chlorinated polyethylene anti-corrosive paint |
| CN102993837A (en) * | 2012-11-23 | 2013-03-27 | 高凡 | Novel aqueous acrylic acid modified high chlorinated polyethylene anticorrosive coating |
| CN102993836A (en) * | 2012-11-23 | 2013-03-27 | 高凡 | Preparation method of novel aqueous acrylic acid modified high chlorinated polyethylene anticorrosive coating |
| CN102993836B (en) * | 2012-11-23 | 2015-09-09 | 南通市晗泰化工有限公司 | The preparation method of aqueous acrylic modified high chlorinated polyethylene anti-corrosive paint |
| CN103382348A (en) * | 2013-07-01 | 2013-11-06 | 吴江市物华五金制品有限公司 | Quick-drying anticorrosion bottom coating for steel materials and preparation method thereof |
| CN103555077A (en) * | 2013-10-14 | 2014-02-05 | 浙江永固为华涂料有限公司 | Fluororesin modified high-chlorinated polyethylene fireproof anticorrosion composite coating |
| CN103555077B (en) * | 2013-10-14 | 2015-11-25 | 浙江永固为华涂料有限公司 | Fluororesin modified highly-chlorinated polyethylene fire retardant anticorrosion composite coating |
| CN105295571A (en) * | 2015-10-21 | 2016-02-03 | 和县科嘉阀门铸造有限公司 | Valve hand wheel coating |
| CN106085217A (en) * | 2016-07-14 | 2016-11-09 | 苏州诚晟信息技术有限公司 | A kind of heat resistance coating and preparation thereof and application process |
| CN106634301A (en) * | 2016-12-05 | 2017-05-10 | 天长市优信电器设备有限公司 | High-toughness coating of aluminum charger case |
| CN117567819A (en) * | 2024-01-15 | 2024-02-20 | 潍坊市兴源防水材料股份有限公司 | Super weather-proof chlorinated polyethylene waterproof coiled material |
| CN117567819B (en) * | 2024-01-15 | 2024-04-12 | 潍坊市兴源防水材料股份有限公司 | Super weather-proof chlorinated polyethylene waterproof coiled material |
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Open date: 20091111 |