Preparing method of modified water-based acrylic emulsion, water-based acrylic composite resin finish paint and preparing method of water-based acrylic composite resin finish paint
A technology of water-based acrylic and composite resin, applied in the direction of coating, etc., can solve the problems of water-based acrylic topcoat water resistance, durability, weather resistance and hardness that are difficult to meet the requirements of environmental use, achieve excellent gloss retention, improve compactness, Good electrical insulation performance
Inactive Publication Date: 2016-02-24
ZHOUSHAN HENGTAI PAINT IND
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Problems solved by technology
However, in practical applications, the water resistance, durability, weather resistance and hardness of a single water-based acrylic topcoat are difficult to meet the harsh environmental requirements
Method used
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[0018] (1) Preparation of modified water-based acrylic emulsion
[0019] Add 0.2g benzoyl peroxide (BPO), 200g propylene glycol monomethyl ether (PM) and 2.0g tertiary dodecylmercaptan in the four-necked flask equipped with stirrer, reflux condenser, constant pressure dropping funnel, heat up to 75°C, then weigh the mixture containing 10g of acrylic acid, 40g of methyl methacrylate, 140g of butyl acrylate, 10g of hydroxyethyl acrylate, and 1.6g of benzoyl peroxide, and use a constant pressure dropping funnel for 3 hours. After the rapid dropwise addition, 0.1 g of benzoyl peroxide was added, and the constant temperature reaction was continued for 3 hours, then cooled to room temperature, 25 g of ammonia water was added to adjust the pH, and the reaction was completed after stirring for 2 h. Concrete synthetic route is as follows:
[0020]
[0021] (2) Preparation of waterborne acrylic composite resin topcoat
[0022] The water-based acrylic resin composite topcoat is divi...
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The invention discloses a preparing method of a modified water-based acrylic emulsion, water-based acrylic composite resin finish paint and a preparing method of the water-based acrylic composite resin finish paint. By taking melamine formaldehyde resin as a main modifying reagent, a resin finished product is good in hardness and wear resistance and better in resistance to chemical medicine and electric insulativity; chlorosulfonated polyethylene rubber with better weather resistance and corrosion resistance is used as an auxiliary modifier, so that a coating is better in weather resistance and gloss retention and good in color retention; multi-resin modifying is adopted, so the compactness of a paint film is improved, the coating is better in chemical medicine resistance, water resistance, oil resistance and aging resistance, and nanon aluminium oxide is doped, so that the effects of uniform particle distribution, high purity and high specific area and high temperature-resistance inertia are realized; the coating is plump, flat and bright. In addition, the water-based acrylic finish paint can be reinforced and toughened to improve the compactness, degree of finish, cold and hot fatigue, breaking tenacity, creeping resistance and wear resistance.
Description
technical field [0001] The invention relates to the field of coatings, in particular to a preparation method of a modified water-based acrylic emulsion, a water-based acrylic composite resin topcoat and a preparation method thereof. Background technique [0002] With people's increasing awareness of environmental protection, water-based coatings have become an important direction and research hotspot in the development of coating technology. Water-based coatings use water as a solvent, have no pollution to the environment, are harmless to the human body, and have certain advantages in terms of performance and transportation. Compared with solvent-based coatings, in addition to the advantages of odorless, non-toxic, non-polluting, low cost, and convenient construction, water-based coatings also have the advantages of strong adhesion, high toughness, and good adhesion in terms of performance. Favored by the majority of users, it has very broad application prospects in automob...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08F220/18C08F220/14C08F220/28C08F220/06C08F8/44C09D133/08C09D7/12
CPCC08F8/44C08F220/18C08F220/1804C08K2201/011C08L2205/035C09D7/61C09D7/65C09D133/08C08F220/06C08L61/28C08L91/00C08L23/34C08K2003/2227C08F220/14C08F220/281
Inventor 张瑛胡建坤戴文刚
Owner ZHOUSHAN HENGTAI PAINT IND