Weatherproof water-soluble automobile finishing varnish and preparation method thereof
A water-soluble, weather-resistant technology, applied to biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., can solve the problems of poor weather resistance and gloss, and achieve the effect of eliminating hazards and pollution
Active Publication Date: 2014-01-22
华涂化工(吉林)有限公司
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Problems solved by technology
However, at present, automotive water-based varnishes still have the problems of poor weather resistance and gloss
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[0008] In a high-speed mixer, add 40g water-based polyglycidyl methacrylate, 32g water-based polyhexafluorobutyl methacrylate resin, 0.4g water-based polyether modified polysiloxane wetting agent, 0.3g water-based polyurethane leveling agent and 18g of deionized water, stirred at a speed of 1000rpm for 1.5h; then, at a speed of 1400rpm, add 16g of water-based blocked polyisocyanate, 1.1g of benzotriazole ultraviolet absorber, 0.5g of phosphite light Stabilizer, 1.5g water-based polyurethane thickener, 6g isopropanol film-forming aid and 0.5g isothiazolinone bactericide were stirred for 2 hours to obtain a weather-resistant water-soluble automotive finish varnish.
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The invention discloses weatherproof water-soluble automobile finishing varnish and a preparation method thereof. The weatherproof water-soluble automobile finishing varnish is prepared by mixing 31-45 parts by weight of water-soluble polyglycidyl methacrylate, 23-39 parts by weight of water-soluble poly(2,2,3,4,4,4-Hexafluorobutyl methacrylate), 12-18 parts by weight of water-soluble closed polyisocyanates, 0.2-0.5 part by weight of water-soluble polyurethane levelling agent, 0.3-0.5 part by weight of water-soluble polyether modified polysiloxane wetting agent, 1-3 parts by weight of water-soluble polyurethane thickening agent, 10-24 parts by weight of deionized water, 0.5-1.3 parts by weight of benzotriazole ultraviolet light absorber, 0.2-0.6 parts by weight of phosphite ester light stabilizer, 4-7 parts by weight of isopropanol film forming additive and 0.2-0.6 part by weight of isothiazolinone bactericide in a container. The weatherproof water-soluble automobile finishing varnish has the advantages that two water-soluble resins with excellent weather resistance are adopted as matrix resins, excellent weather resistance and high glossiness of a paint film are guaranteed through dispersing by various auxiliaries, light loss rate is only 12% after xenon arc aging for 400 hours, glossiness (at the 20 DEG) is 90 GU; meanwhile, a water-soluble system eliminates pollution caused by volatilization of an organic solvent, so that the weatherproof water-soluble automobile finishing varnish product can meet all the technical index requirements of solvent type automobile finishing varnish.
Description
technical field [0001] The invention belongs to the technical field of automobile paint production, and in particular relates to a water-based finish paint for automobiles with excellent weather resistance. Background technique [0002] At present, solvent-based automotive coatings are commonly used in the automobile manufacturing industry. For the convenience of construction, a large amount of toxic and harmful substances such as benzene, toluene, ethylbenzene and xylene are added to the coatings, which will bring great harm to human health and the environment. Cause major pollution, the emission of volatile organic compounds (VOC) in the process of automobile painting will exceed 120g / m2, and the German environmental protection standard in 1995 gave a limit of 35g / m2 for VOC emissions, to achieve this Requirements, it is necessary to completely eliminate the organic solvents in the paint, use deionized water instead of traditional organic solvents to prepare water-based au...
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IPC IPC(8): C09D133/14C09D5/14
Inventor 张振久马海松高成勇
Owner 华涂化工(吉林)有限公司
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