Preparation method of water-based polyurethane/acrylate compound emulsion used for damping paint
A water-based polyurethane and acrylate technology, applied in coatings and other directions, can solve the problems of complex process, narrow temperature range of emulsion damping, and use restrictions, and achieve the effect of overcoming high temperature viscous flow and low VOC content
Inactive Publication Date: 2019-02-12
吉林希尔工业新材料技术有限公司
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The invention discloses water-based polyurethane/acrylate compound emulsion used for paint, and belongs to the technical field of paint. The emulsion is prepared from polyether polyol, polyisocyanatemonomer, castor oil, a micro-molecule chain extender, a hydrophilic chain extender, a salt-forming agent, an end-capping agent, acrylate monomer and the like. The invention further provides a preparation method of the water-based polyurethane/acrylate compound emulsion; according to the method, the polyether polyol, the polyisocyanate monomer, the castor oil and the hydrophilic chain extender aresubjected to step-by-step polymerization according to a certain ratio, then the end-capping agent is added for end capping, end-capped anionic water-based polyurethane emulsion is prepared, and then the acrylate monomer and styrene are added for continuous polymerization, so that the core-shell water-based polyurethane/acrylate compound emulsion is formed. After the water-based polyurethane emulsion used for the wide-temperature range damping paint is subjected to finishing and film forming, tan delta>=0.3, and an effective temperature range can be higher than 160 DEG C.
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