The preparation method of silicone acrylic miniemulsion

A technology of micro-emulsion and silicon-acrylic micro-emulsion, which is applied in the field of preparation of silicon-acrylic micro-emulsion, can solve the problems of high price, limit the comprehensive performance of polyacrylate emulsion, and restrict the content of organic silicon in silicon-acrylic micro-emulsion, so as to improve the compatibility Effect
CN104861107BActive Publication Date: 2017-03-01ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2017-03-01

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Abstract

The invention discloses a preparation method for silicone-acrylic miniemulsion. The preparation method comprises the following steps: mixing acrylate monomers, organosilicone monomers and a stabilizer, stirring until complete dissolution, and obtaining an oil-phase mixture, wherein the organosilicone monomers include non-functional organosilicone monomers and functional organosilicone monomers, and the non-functional organosilicone monomers include methyltrimeth(eth)oxysilane, propyltrimeth(eth)oxysilane or phenyltrimeth(eth)oxysilane; dissolving an emulsifier and water, and stirring uniformly to obtain a water-phase mixture; adding the oil-phase mixture into the water-phase mixture, producing a hydrolysis-emulsification reaction, performing ultrasonic miniemulsification, and producing a miniemulsion polymerization reaction of a mixed solution in an oxygen-free condition at 50-70 DEG C to obtain the silicone-acrylic emulsion. The preparation method is used for performing miniemulsion polymerization on a monomer system consisting of the non-functional organosilicone monomers, the functional organosilicone monomers and the acrylate monomers, the prepared silicone-acrylic miniemulsion is relatively high in both silicon content and solid content, and the coagulation rate can be reduced to 0%.
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Description

technical field

[0001] The invention relates to the technical field of emulsion preparation, in particular to a method for preparing a silicon acrylic miniemulsion. Background technique

[0002] Polyacrylate emulsion has excellent anti-aging, film-forming properties, chemical resistance, transparency and mechanical properties, etc., and the raw material price is low, and the synthesis process is relatively simple, so it has been widely used in the coating industry. Especially water-based polyacrylate coatings, which use polyacrylate as the base material and water as the solvent or dispersion medium, are widely used in the construction field because of their safe use and no pollution to the environment. However, with the rapid development of the coatings industry, for practical applications, polyacrylate coatings still have some shortcomings, such as poor water resistance, friction resistance, and weather resistance, which affect the effect of decoration and protection. In o...

Claims

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