Double-coated hollow glass microbead heat-insulated coating and preparation method thereof

Abstract

The invention discloses double-coated hollow glass microbead heat-insulated coating and a preparation method thereof. The double-coated hollow glass microbead heat-insulated coating is prepared from the following raw materials in percentage by weight: 20 to 30 percent of organic silicon modified styreneacrylic emulsion, 9 to 13 percent of double-coated hollow glass microbead, 8 to 12 percent of titanium dioxide rutile, 5 to 8 percent of talcum powder, 17 to 23 percent of heavy calcium, 1.5 to 2 percent of glycol, 0.13 to 0.2 percent of hydroxymethyl cellulose, 0.6 to 1 percent of dispersing agent, 0.35 to 0.45 percent of defoaming agent, 0.15 to 0.19 percent of wetting agent, 0.08 to 0.13 percent of multifunctional aid, 1.0 to 1.5 percent of film-forming aid and the balance of water. Reflective heat-insulated coating is prepared by performing pretreatment on hollow glass microbeads by a double-coated method, selecting silicone / acrylic emulsion as a base material, using the pretreated hollow glass microbeads, the titanium dioxide rutile, the talcum powder, the heavy calcium and the like as pigment fillers and adding a certain amount of fillers. The coating can improve reflectivity and weather resistance, and has the beneficial effects of environmental friendliness, energy conservation, simple production process, good dispersing effect, low cost, stable performance and long service life.

Description

technical field [0001] The invention relates to a heat-insulating coating, in particular to a double-coated hollow glass microsphere heat-insulating coating and a preparation method thereof. The hollow glass microspheres are pretreated by the double-coating method, and the hollow glass microspheres are modified to prepare reflective heat-insulating coatings, which have a uniform coating film and can significantly improve the reflection of dark-colored heat-insulating coatings on sunlight Efficiency, and meet the requirements of aesthetics, this kind of coating can improve the thermal insulation performance of buildings, reduce the impact of the external environment on the indoor temperature, and save air conditioning and heating costs. Background technique [0002] Sunlight at 750W / m per second 2 The energy radiates to the surface of the earth, and under the irradiation of sunlight, heat continuously accumulates on the surface of the irradiated object, making its surface te...

AI Technical Summary

Problems solved by technology

Although they all have certain thermal insulation functions, their common shortcomings are: 1. Hollow glass microspheres are not easy to disperse during use, and are prone to agglomeration, which affects the uniformity of the coating film; 2. Such coatings Focus on white and light-colored paints, dark-colored paints are still difficult to achieve the ideal reflection effect