Spraying process of anti-ultraviolet self-cleaning coat of outer wall of building under normal temperature

Abstract

The invention provides a spraying process of an anti-ultraviolet nanometer catalytic self-cleaning coat under normal temperature, overcoming the limitation that the prior art is surely manufactured under high temperature, improving the method of anatase TiO2 sol solution prepared by existing peroxo-titanic acid to realize solidification of the sol solution in low temperature light and realizing TiO2 functional self-cleaning coat solidified under normal temperature. The nanometer TiO2 functional coat has catalytic oxidation effect on hydrocarbon chemicals under ultraviolet radiation, thus realizing the aim of coat self-cleaning. The spraying process has the beneficial effects of ultraviolet resistance, weather and aging resistance, bacteria and enzyme resistance, antifouling, deodorizing and the like, can greatly purify urban air quality and improve the levels of environmental protection, energy-saving and emission reduction.

Description

technical field [0001] The invention relates to a spraying process of an anti-ultraviolet self-cleaning coating on the outer wall of a building at normal temperature, in particular to nano-TiO 2 The spraying process of sol solution on the exterior wall of the building. Background technique [0002] Existing external walls of buildings undergoing long-term wind and rain, exposure to the sun, alternating dry and wet, and changes in temperature and temperature will cause aging phenomena such as discoloration, staining, pulverization, cracking, peeling, and peeling of the external surface of the building. Sunlight radiation can also degrade polymer segments in synthetic materials such as plastics, synthetic resins, and plexiglass, leading to aging. It has been confirmed by a large number of researches and engineering applications that the aging phenomenon is mainly caused by the degradation and damage of substrates and coatings by ultraviolet rays in the sun. The appearance of...

AI Technical Summary

Problems solved by technology

Therefore, this has led to the coating of anatase TiO with UV resistance and self-cleaning on heat-labile substrates such as in situ and at room temperature, as well as organic plastics. 2 The difficulty of coating greatly limits the application range of coating

[0004] Another method is: use peroxotitanic acid to prepare titanium oxide sol with anatase crystal form and good film-forming property at low temperature, and achieve the realization of anatase titanium dioxide by adjusting the aging time of peroxotitanic acid. Crystal transformation process, but there are still some peroxide bonds remaining on the surface of titanium oxide particles, which makes the actual production easy to operate