Preparation method of waterproof thermal-insulation exterior wall coating for building

Abstract

The invention discloses a preparation method of a waterproof thermal-insulation exterior wall coating for buildings, and the coating comprises the following components: a fluorosilicone modified acrylic emulsion, a graphene-acrylic acid composite emulsion, silica sol, activated carbon fiber powder, fluorosilane, titanium dioxide and an auxiliary agent, the auxiliary agent comprises a dispersing agent, a wetting agent, a thickening agent, a defoaming agent, a coalescing agent and an anti-freezing agent. The preparation method comprises the following steps: uniformly mixing silica sol, activated carbon fiber powder and titanium dioxide, adding fluorosilicone modified acrylic emulsion and graphene-acrylic composite emulsion, uniformly mixing, adding the auxiliary agent, uniformly mixing, and finally mixing fluorosilane. The waterproof thermal-insulating exterior wall coating for the buildings has excellent waterproof and heat-insulating properties, is self-cleaning and washable, and is suitable for various external environments.

Description

technical field [0001] The present invention is a divisional application with the application number "202011207818.2" and the name "A waterproof and thermal insulation exterior wall coating for buildings and its preparation method". Background technique [0002] Architectural exterior wall coatings are coatings that are applied to the entire exterior wall of a building. Its main function is to decorate and protect the exterior wall, making the building look flat and beautiful, and at the same time protecting the building. Exterior wall paint needs to be exposed to the outdoor environment. Compared with interior wall paint, it faces a harsher environment, especially in some humid areas in the south, where the waterproof function of exterior wall paint is more demanding. [0003] In the prior art, acrylic emulsion is often used as the base material, and the prepared water-based acrylic paint has the advantages of moderate cost and good adjustability. However, the water-based ...

AI Technical Summary

Problems solved by technology

However, the water-based acrylic paints on the market are often hot, sticky and brittle. In the dry environment below 0°C for a long time in northern my country, it is easy to crack, and the paint needs to play a certain role in heat preservation. In the warm and humid southern my country In the environment, water vapor, rainwater, etc. are easy to penetrate into the wall and corrode the wall, which not only affects the aesthetics of the building, but also reduces the service life of the building