Method for preparing multifunctional building engineering paint

Abstract

The invention relates to a method for preparing a multi-functional building coating. The flexible coating is the one with extension and retracting corresponding to stress,and suitable modulus and tensile strength when be extended, has protective and deconative effects of the usual coating as well as functions of water resistance and covering slot. It makes use of absorption and shielding of some nm particle to the ultraviolet ray,uses ball milling or high speed shearing and supersonic dispersion and self-crosslinking flexible latex to prepare nm compound self-crosslinking flexible latex,meanwhile,add the usual assistant to raise its flexibility and resistance to aging. In the productive course,use nm compound self-crosslinking flexible latex and new sound absorption material to produce the multi-functional building coating with outstanding sound absorption effect as well as high flexibility and resistance to aging,can be applied in other building,like decoration and protection of building on two sides of the high way,house and ground.

Description

technical field [0001] The invention relates to the field of chemical industry, and relates to a preparation method of a multifunctional architectural engineering paint. Background technique [0002] Most of the exterior walls of buildings use architectural coatings, but after the surface is exposed to wind, rain, sun, summer heat and winter freezing, there will often be paint powdering, peeling and reticular cracks. The glass transition temperature of ordinary exterior wall coatings Higher, it is difficult to contain the tiny cracks on the wall surface, and the service life is short, which seriously affects the decorative effect and protective function of the coating film, so elastic exterior wall coatings are often used to contain wall cracks. In order to make the coating have a certain degree of elasticity in the use environment, it is necessary to ensure that the glass transition temperature (Tg) of the emulsion polymer is lower than the ambient temperature. Generally, t...

AI Technical Summary

Problems solved by technology

[0002] Most of the exterior walls of buildings use architectural coatings, but after the surface is exposed to wind, rain, sun, summer heat and winter freezing, there will often be paint powdering, peeling and reticular cracks. The glass transition temperature of ordinary exterior wall coatings Higher, it is difficult to contain the tiny cracks on the wall surface, and the service life is short, which seriously affects the decorative effect and protective function of the coating film, so elastic exterior wall coatings are often used to contain wall cracks

In order to make the coating have a certain degree of elasticity in the use environment, it is necessary to ensure that the glass transition temperature (Tg) of the emulsion polymer is lower than the ambient temperature. Generally, the lower the Tg value, the better the elasticity, but the coating film with too low Tg has a higher elongation rate. High elasticity is good, but the coating film is too soft, and the pollution resistance and dust resistance are poor. In addition, with the increasing development of cities, various pollution including noise pollution is becoming more and more serious, which not only affects people's hearing, but also can cause high blood pressure , heart disease, memory loss, inattention and other mental syndromes are a major hazard to human beings

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