Dual-curing water-based paint and its preparation method and construction technology
A water-based coating, dual-curing technology, used in polyurea/polyurethane coatings, coatings, devices for coating liquids on surfaces, etc., can solve problems such as high pollution and high VOC in oil-based coatings, and achieve good adhesion, super strong Chemical resistance, simple and convenient coating construction
Active Publication Date: 2022-01-04
HUNAN SOKAN NEW MATERIAL
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Embodiment 1～6
[0050] For the dual-curing water-based coatings of Examples 1-6, component A includes the following components in weight percent, which are listed in Table 1.
[0051] The defoaming agent is a mineral oil dispersant; the pH regulator is 2-amino-2-methyl-1-propanol; the wetting agent is a polysiloxane-polyether copolymer wetting agent.
[0052] The dual curing water-based coating formulation of table 1 embodiment 1~6
[0053]
[0054]
[0055] According to the formulation dosage of the specific examples in Table 1, weigh aliphatic hydroxyl functional polycarbonate polyurethane dispersion, metal carboxylate drier, 3000 mesh talcum powder, precipitated silica matting powder, polysiloxane Mix alkane-polyether copolymer wetting agent and mineral oil dispersant, stir evenly, and disperse at 2000rpm for 20min until the fineness is less than 20μm;
[0056] Then add water-based epoxy emulsion, non-ionic aliphatic polycarbodiimide aqueous dispersion, water-based blocked isocyanat...
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Abstract
The invention discloses a dual-curing water-based coating and its preparation method and construction process, which are used to simultaneously coat metal and plastic composite substrates, including A component and B component, A component: water-based polyurethane resin 30 %~50%, water-based epoxy emulsion 20%-40%, water-based drier 0.3%-0.6%, water-based polycarbodiimide cross-linking agent 2%-5%, water-based pigments and fillers 2%-5%, hydrophilic Water-based solvent 2%-6%, silica 3%-6%, water-based blocked isocyanate crosslinking agent 2%-10%, deionized water 5%-10%, water-based additive 0.7%-3.4%; B The components include a curing agent; the mass ratio of component A to component B is 100:3-6. In the dual-curing water-based paint of the present invention, water-based polyurethane resin and water-based epoxy emulsion are used as the main film-forming resins, and water-based blocked isocyanate cross-linking agent and curing agent have different reaction degrees to temperature to form a coating that can simultaneously meet the needs of plastic substrates and Coating for metal substrates with good adhesion and chemical resistance.
Description
technical field [0001] The invention relates to the field of water-based PU, in particular to a dual-curing water-based paint. In addition, the present invention also relates to a preparation method and a construction process including the above-mentioned dual-curing water-based paint. Background technique [0002] With the improvement of living standards, plastic products are used more and more widely. At present, people not only pursue good performance, but also pursue fashionable appearance. Using paint to treat the shell of plastic products is the most cost-effective method. For electronic products using metal materials, they are also very popular because of their high strength, mature processing, strong texture, and higher-end performance. . Both plastic materials and metal materials have their own advantages and disadvantages, so when actually selecting materials, a composite material composed of two materials will be used at the same time. Focus on. Due to the exc...
Claims
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IPC IPC(8): C09D175/04C09D7/61C09D7/65C09D7/63B05D7/14B05D3/02C08J7/046C08J7/043
CPCC09D175/04C09D7/61C09D7/69C09D7/65C09D7/63C08J7/0427B05D7/14B05D3/02C08L2205/03C08L2312/00C08K2201/005C08L63/00C08L79/00C08K13/02C08K3/36C08K3/34C08K5/29C08K5/098
Inventor 陈旭王卫国曾煜李平李玉良余辉良符饶生缪培凯吕国强杨波凌云剑
Owner HUNAN SOKAN NEW MATERIAL