High-effect reflective insulating coating and preparation method thereof

Abstract

The invention discloses a high-effect reflective insulating coating and a preparation method thereof, and belongs to the technical field of application of coating. The high-effect reflective insulating coating consists of an emulsion, a polymer Youchuang E, titanium dioxide, ground calcium carbonate, nano far infrared ceramic powder, fine diatomite, ZR coating powder, ultraviolet-proof inorganic powder, reflective powder, hollow glass beads, a dispersant, a wetting agent, a pH adjustor, a film forming agent, a defoamer, a thickener, an antiseptic antimildew agent and water. The invention further provides a preparation method of the coating. According to the invention, an orthogonal test method is adopted, and primary and secondary sequences of factors are calculated according to a range R by means of complexing technology so as to obtain an insulating coating formula with optimal match. Through detection by a Chinese building material test center, the solar reflectivity is 0.88, the semi-spherical emissivity is 0.91, and the insulating temperature difference is 16.9 DEG C.

Description

technical field [0001] The invention belongs to the technical field of paint application, and in particular relates to a high-efficiency reflective heat-insulating paint and a preparation method thereof. Background technique [0002] my country implemented the "Energy Conservation Law of the People's Republic of China" on April 1, 2008. At present, building energy conservation has become a statutory requirement in my country. strict mandatory regulations. The most important thing for building energy saving is to make the walls, roofs, doors and windows of the building have better heat insulation performance and good airtight performance. Among the many building thermal insulation materials currently on the market, architectural reflective thermal insulation coatings have been widely accepted and applied due to their advantages such as economy, ease of use, and reliable reflective thermal insulation effects. [0003] Architectural reflective heat insulation coatings are made...

AI Technical Summary

Problems solved by technology

However, theoretically speaking, each titanium dioxide particle can scatter a certain amount of light, and the maximum scattering is achieved when the distance between the particles is twice the diameter of the titanium dioxide particle. When the pigment volume concentration (PVC) of titanium dioxide is 10%, the aggregation of titanium dioxide will greatly reduce the scattering efficiency of scattered light, resulting in a decrease in the overall titanium dioxide scattering ability, and exterior wall coatings Compared with the interior wall, the application environment is relatively harsh, which leads to the fact that the solar reflectance of traditional reflective heat-insulating coatings cannot meet the national standard of 0.80. Reasons why reflective heat insulation coatings cannot be widely used

[0005] In addition, at present, more than 80% of the reflective heat-insulating coatings in the market are mixed with hollow glass microspheres as functional fillers to make up for the unqualified solar reflectance index caused by the overpolymerization of titanium dioxide, which improves the reflectivity of the coating to a certain extent, but The domestic production of hollow glass microspheres is immature, and the hollow structure of the glass microspheres is destroyed during the coating production process. After the destruction, the coating will swell and harden due to water absorption, and the storage stability of the coating is extremely poor.

At the same time, too much hollow glass microspheres make the surface roughness of the coating, which greatly reduces the stain resistance and affects the long-lasting reflection and heat insulation effect of the entire paint film.

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