Anti-fouling and water-resistant silicone-acrylate emulsion and preparation method thereof

Abstract

The invention provides an anti-fouling and water-resistant silicone-acrylate emulsion and a preparation method thereof. The silicone-acrylate emulsion comprises the following raw materials in part byweight: 2-4 parts of a reactive anionic emulsifier, 1.8-3.1 parts of a reactive non-ionic emulsifier, 0.2-0.4 part of a pH buffering agent, 1.5-2.3 parts of an inorganic superoxide initiator, 0.6-0.8part of an oxidation initiator, 0.55-0.6 part of a reduction initiator, 7-10 parts of a methyl methacrylate monomer, 68-72 parts of an N-butyl acrylate monomer, 20-25 parts of an organosiloxane monomer, 1.2-1.5 parts of low-molecular alcohol, 0.06-0.08 part of tert-butyl hydroperoxide, 0.06-0.08 part of rongalite and 126-130 parts of deionized water. The silicone-acrylate emulsion provided by theinvention is excellent in anti-fouling and water-resistant properties, has an organosilicon monomer content of higher than 20 percent and is stable and controllable in the polymerization process, small in particle size and optimal in storage stability.

Description

(1) Technical field [0001] The invention relates to a silicon-acrylic emulsion and a preparation method thereof, in particular to a high-silicon-content silicon-acrylic emulsion (polymethacrylate emulsion) with antifouling and water resistance properties applicable to water-based coatings and ink systems and a preparation method thereof . (2) Background technology [0002] Poly(meth)acrylate emulsion refers to a product obtained by emulsion polymerization of acrylate (methacrylate) monomers and other vinyl ester monomers. Coatings and inks using poly(meth)acrylate emulsion as the main resin have many excellent properties, such as light resistance, oil resistance, weather resistance, and good adhesion to polar and non-polar surfaces. [0003] With the progress of society and the improvement of living standards, people's requirements for the appearance and internal quality of paint films are gradually increasing. Acrylate emulsions are also developing toward environmental pr...

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