Bionically designed waterborne polyacrylate modified polyurethane composite emulsion and preparation method thereof
A technology of polyacrylate and composite emulsion, which is applied in the field of coatings and shoe adhesives, can solve the problems of toughness, weather resistance, wear resistance, chemical resistance and poor water resistance, and achieve accelerated volatilization speed, excellent adhesion, excellent The effect of adhesion
Inactive Publication Date: 2015-09-09
广东多正树脂科技有限公司
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AI Technical Summary
Problems solved by technology
Pure WPU emulsion has strong toughness, weather resistance, abrasion resistance, chemical resistance and poor water resistance
Method used
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Embodiment 1
[0027] Water-based PUA compound emulsion designed by bionics:
[0028] The water-based PUA composite emulsion designed by bionics can replace the current solvent-based PU and imported water-based PU emulsion, and has fast film formation, good adhesion, water resistance, aging resistance, and good non-yellowing effect.
[0029] prescription:
[0030] The following are calculated in parts by weight, and the molecular weight of the polyester polyol is 1000-2000.
[0031] PU emulsion
[0032]
[0033]
[0034] PUA compound emulsion designed by bionics
[0035]
[0036]
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The invention discloses a bionically designed waterborne polyacrylate modified polyurethane composite emulsion and a preparation method thereof. The method is characterized by: using acetone or butanone and acrylic monomer as the solvent, subjecting diisocyanate HDI and IPDI, mixed polyester polyol, dimethylolpropionic acid, 1, 4-butanediol, trimethylolpropane monoallyl ether, hydroxypropy, and hydroxyethyl acrylate to polymerization to obtain polyurethane with carboxyl, and conducting neutralization with tertiary amine, removing the solvent to obtain self-emulsifying waterborne polyurethane anionic emulsion containing double bonds; then taking the emulsion as seed, adding acrylate monomer, dopamine methacrylamide and a proper amount of crosslinking agent monomer to carry out pre-emulsification, then performing seeded emulsion polymerization to obtain the bionically designed waterborne polyacrylate modified polyurethane composite emulsion. The composite emulsion provided by the invention has the advantages of energy saving and environmental protection, adaptation to various material surfaces, safe and reliable process, and stable product quality.
Description
technical field [0001] The invention relates to the technical field of adhesives for coatings and shoes, and more specifically relates to the preparation and application of a high-solid-content water-based polyacrylate-modified polyurethane composite emulsion designed by bionics. Background technique [0002] In the tissues, organs and structures of many creatures in nature, many of their wonderful functions are far beyond human design. With the help of analysis and research on the special composition, structure and function of natural organisms, imitate the structure, shape, function and behavior of organisms, explore their inner principles and use them to solve scientific and technical problems. The abundant biological species and their specific chemical structures in the ocean have become a treasure trove of resources for screening various functional materials. The adhesive protein secreted by marine mussels' foot silk exhibits super adhesion in a humid water environment...
Claims
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IPC IPC(8): C08F283/00C08F220/58C08F220/18C08F220/14C08F220/28C08G18/67C08G18/66C08G18/42
Inventor 曾广福刘传刚许玉良郑李华洪必贵
Owner 广东多正树脂科技有限公司