Modified nano silicon dioxide and organic and inorganic hybridized polyacrylate emulsion adopting modified nano silicon dioxide

Abstract

The invention relates to modified nano silicon dioxide and organic and inorganic hybridized polyacrylate emulsion adopting the modified nano silicon dioxide. The modified nano silicon dioxide is prepared from 100 parts of nano silicon dioxide, 0.2 to 2 parts of gamma-aminopropyltriethoxysilane, 4 to 40 parts of ethanol, 0.2 to 2 parts of diacetone acrylamide and 1000 parts of a solvent. By adopting the modified nano silicon dioxide, the problem in the prior art about the compatibility between the nano silicon dioxide and polyacrylate in a process of preparing the organic and inorganic hybridized polyacrylate emulsion by adopting the nano silicon dioxide is solved; the surface of the nano silicon dioxide is modified and a diacetone group with bioactivity is introduced; the group can keep stable in an emulsion polymerization process and a storage process and can participate in a curing crosslinking reaction in a hybridized emulsion curing and film forming process; the nano silicon dioxide and the polyacrylate are connected together through a chemical bond, so that the aim of improving the compatibility between the nano silicon dioxide and the polyacrylate is realized.

Description

technical field [0001] The invention relates to a modified nano-silica and an organic-inorganic hybrid polyacrylate emulsion using the modified nano-silica, which belongs to the field of water-based polymer material synthesis. Background technique [0002] Polyacrylate resin has the advantages of excellent weather resistance, water resistance, chemical resistance, high gloss and good gloss retention. Polyacrylate resins are generally used as materials such as coatings and adhesives for construction in a liquid state. Solvent-based polyacrylate resins have a greater impact on the environment due to the discharge of a large amount of solvent during use. Water-based polyacrylate resins Resin has become the main direction of current development because of its advantages such as less volatile organic compound (VOC) emissions, low price, safe use, and environmental protection. [0003] The performance of water-based polyacrylate resin is limited when used alone, so it is often ne...

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Problems solved by technology

[0008] The present invention aims to solve the problem of compatibility between nano-silica and polyacrylate in the preparation of organic-inorganic hybrid polyacrylate emulsion by using nano-silica in the prior art, as well as the problems of dispersion uniformity and stability, and provides a Modified nano-silica, in the organic-inorganic hybrid polyacrylate emulsion prepared by using the modified nano-silica, the compatibility between nano-silica and polyacrylate has been improved, and the nano-silica is prepared Improved dispersion uniformity and stability in the resulting polyacrylate emulsion

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