SiO2 aerogel thermal insulation latex paint and preparation method thereof

Abstract

The invention discloses a SiO2 aerogel thermal insulation latex paint and a preparation method of the SiO2 aerogel thermal insulation latex paint. The paint is formed by proportionally stirring SiO2 aerogel particles, emulsion paint and water. The SiO2 aerogel thermal insulation latex paint has the characteristics of good thermal insulation, flame resistance, high temperature resistance, incombustibility, high safety, high toughness, high compactness and the like, and is good thermal insulation paint.

Description

technical field [0001] The invention relates to a thermal insulation coating, in particular to a high-performance SiO 2 Airgel thermal insulation latex paint and preparation method thereof. Background technique [0002] Building energy consumption accounts for 30% to 40% of human energy consumption, while in developed cities the energy consumed by heating and heating in summer and winter has accounted for 40% to 50% of the total energy consumption of buildings. Thermal insulation performance is an important way to reduce building energy consumption and improve building functions. In recent years, the method of using energy-saving thermal insulation mortar and thermal insulation coating on the wall of buildings has attracted more and more attention. However, currently commonly used thermal insulation coatings are mostly prepared by using conventional thermal insulation coatings such as sepiolite, expanded perlite, expanded vermiculite, etc. as thermal insulation additives. ...

AI Technical Summary

Problems solved by technology

However, currently commonly used thermal insulation coatings are mostly prepared by using conventional thermal insulation coatings such as sepiolite, expanded perlite, expanded vermiculite, etc. as thermal insulation additives. Easy to stain and other shortcomings, not suitable for use on building exterior walls and easily affect the service life of building insulation systems

[0003] Airgel, as a new type of lightweight super thermal insulation material with good thermal insulation performance, has a nanoporous structure with a controllable structure. Due to its unique nanostructure, it has unique properties such as low thermal conductivity, low density and high specific surface area. Performance, the thermal conductivity is about 0.013W / m·K, and the density is 0.11~0.15g / cm 3 , high specific surface area is about 500 ~ 1200m 2 / g, and the airgel has superhydrophobicity with a contact angle of up to 160° after special processing, and also has the characteristics of corrosion resistance and high temperature resistance. It is an excellent heat insulation material, but due to the airgel The strength is low and the wear resistance is poor, so airgel particles are often combined with resin, fiber, etc. to make airgel composite materials for engineering applications

Chinese patent CN1546312A discloses an aerogel composite flexible thermal insulation film and its preparation method. The patent is to use silicone resin and aerogel composite to make a thermal insulation coating, but because the liquid resin is very easy to Immersed in the nano-holes of the airgel, the overall thermal insulation performance of the coating is reduced. Therefore, it is necessary to further improve the prior art using aerogel as a raw material to prepare thermal insulation coatings

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