Fluorine-silicon modified styrene-acrylic emulsion with comb-shaped structure and preparation method of fluorine-silicon modified styrene-acrylic emulsion

A technology of fluorosilicon modification and styrene-acrylic emulsion, which is applied in the direction of coating, etc., can solve the problems of slow polymerization rate, product stability and unsatisfactory surface properties, etc., and the realization time is short, the preparation process is simple and easy, and the stability is good and the effect of surface properties
CN112961291AActive Publication Date: 2021-06-15濮阳蓝星新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
濮阳蓝星新材料有限公司
Publication Date
2021-06-15

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Abstract

The invention discloses a comb-shaped fluorine-silicon modified styrene-acrylic emulsion and a preparation method thereof. The method comprises the following steps: 1) dissolving an emulsifier and a reactive emulsifier in water to prepare an aqueous emulsifier solution A; 2) preparing a uniform solution B from a monomer mixture of styrene, acrylate, fluorine-containing acrylate, vinyl organosiloxane and hydroxyl silicone oil as well as a water repellent; 3) dispersing the solution B into the aqueous emulsifier solution A under stirring to obtain a pre-emulsion C; 4) performing fine emulsification on the pre-emulsion C to obtain a miniemulsion D; and 5) adding a water-soluble initiator into the miniemulsion D, and conducting initiating to obtain the fluorine-silicon modified styrene-acrylic emulsion. According to the invention, a miniemulsion polymerization method is adopted, polymerization is carried out in liquid drops, and the prepared product can be used as a functional coating material on the surfaces of paper, fabrics, leather and the like, has good stability, and also has excellent film-forming property, air permeability, brightness, water and oil resistance, heat resistance and chemical reagent resistance.
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Description

technical field

[0001] The invention relates to the technical field of polymer preparation, in particular to a comb structure fluorosilicon-modified styrene-acrylic emulsion and a preparation method thereof. Background technique

[0002] Styrene-acrylic emulsion has excellent film-forming properties, air permeability, brightness, etc. After being modified with fluorosilicone, its water and oil repellency, heat resistance and chemical resistance are significantly enhanced, and it can be used as a functional coating. However, the prior art has the following problems: 1. The silicone branch chains usually introduced are relatively short, which are easily "covered" by other branch chains or "embedded" by acrylic resin molecules, making it difficult to stretch and migrate to the surface of the latex film, affecting its Surface properties; 2. Conventional fluorosilicon-modified acrylate monomers adopt emulsion polymerization, vinyl silicone monomers are easily hydrolyzed to genera...

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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