Environmentally-friendly and waterproof exterior wall latex paint and preparation method thereof

Abstract

The invention provides an environmentally-friendly and waterproof exterior wall latex paint and a preparation method thereof. The formula of the latex paint comprises, by weight, 20-45 parts of a polysiloxane-polyurethane emulsion, 8-20 parts of a film forming assistant, 1-3 parts of cellulose, 20-40 parts of talcum powder, 10-20 parts of a pigment, 0.5-2 parts of glycerol, 0.1-0.9 parts of an antibiosis antiseptic, and 15-35 parts of water. The preparation method comprises the following steps: 1, adding the polysiloxane-polyurethane emulsion and the talcum powder to water according to above proportions, adding half of the above parts of the film forming assistant to water, and stirring; and 2, adding the above weight parts of cellulose, the pigment, glycerol and the antibiosis antiseptic and the remaining film forming assistant to a mixture formed in step 1, and carrying out high speed stirring dispersion to form the latex paint. The latex paint provided by the invention has the advantages of strong adhesion, rain wash resistance, hydrophobic and moisture-proof property, good chemical stability and high and low temperature resistance, and the preparation method of the latex paint has the advantages of simplicity, and environmentally-friendly and pollution-free preparation process.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to an environment-friendly waterproof latex paint for exterior walls. Background technique [0002] Latex paint is widely used in interior wall and exterior wall decoration because of its excellent characteristics. Since the exterior wall is easily washed by light and rain, there are higher requirements for the quality of latex paint film formation. However, the existing latex paint has weak adhesion, and is easily washed away by rainwater, and is easily aged under sunlight, and is easily deformed after being cooled and heated, thereby affecting the service life of the latex paint film. Contents of the invention [0003] The problem to be solved by the present invention is to provide an environmentally friendly exterior wall waterproof latex paint with strong adhesion, resistance to rain erosion, water repellency and moisture resistance, good chemical stability and high and low temperature...