A kind of silicone acrylic emulsion and preparation method thereof

A silicone-acrylic emulsion and emulsifier technology, applied in the coating and other directions, can solve the problems of high film-forming temperature and low organic silicon content, and achieve the effects of strong hydrophobicity, lower film-forming temperature and simple synthesis process.
CN107556429BActive Publication Date: 2020-11-20东方雨虹民用建材有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
东方雨虹民用建材有限责任公司
Publication Date
2020-11-20

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Abstract

The invention discloses a silicone-acrylic emulsion and a preparation method thereof. The silicone-acrylic emulsion is prepared from a first component and a second component, wherein the first component is prepared from the following raw materials in parts by weight: 20 to 30 parts of methyl methacrylate, 40 to 60 parts of butyl acrylate, 1 to 3 parts of acrylic acid, 0.8 to 1.2 parts of emulsifier and 50 to 60 parts of deionized water; the second component is prepared from the following raw materials in parts by weight: 30 to 50 parts of organosilicon monomer, 0.8 to 1.2 parts of dodecylbenzenesulfonic acid, 0.5 part of emulsifier and 30 to 40 parts of deionized water; the organosilicon monomer is a mixture of octamethyl cyclotetrasiloxane and triethoxyvinyl-siloxane. The silicone-acrylicemulsion is relatively higher in organic silicon content. In the method disclosed by the invention, when the first component and the second component are added dropwise, a polymerization reaction isperformed by a graduation polymerization method, so that the glass transition temperature and lowest film-forming temperature of the generated silicone-acrylic emulsion are lower.
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Description

Technical field

[0001] The invention relates to the field of building materials, in particular to a silicone acrylic emulsion and a preparation method thereof. Background technique

[0002] Silicone-acrylic emulsion is a commonly used film-forming substance in the formulation of waterproof coatings. It is a water-based emulsion polymerized by the core-shell coating polymerization process by adding organic silicon monomers and acrylic monomers containing unsaturated bonds with appropriate additives. . It combines high temperature resistance, weather resistance, chemical resistance, hydrophobicity, low surface energy, and high color retention, flexibility, and adhesion of acrylic resin. It is a kind of high weather resistance, high water resistance, and pollution resistance. Emulsion for environmentally friendly architectural coatings.

[0003] Although silicone-acrylic emulsion has good application prospects, it is difficult to emulsify in water due to the extremely low surface en...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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