One of the major advances has been the use of high reflectivity hollow glass beads for the preparation of new thermal insulation coatings. The results showed that the order of influence of pigments and fillers on the reflectivity of the coatings was: hollow microspheres> titanium dioxide> sepiolite> aluminum silicate, while the emulsion species had little effect on the reflectance of the coatings; and when the addition of hollow glass beads , The reflectivity of the coating also increases, in the hollow glass beads content of 35%, the thermal insulation coating thermal reflectance to achieve maximum. While the use of hollow glass beads and high refractive index of the white pigment can effectively improve the insulation effect of paint. In the traditional water-based paint formulations on the basis of adding high-reflectivity hollow glass beads and ultra-fine titanium dioxide composite composite pigment filler and infrared radiation-type composite function filler, can be prepared with high reflectivity and high radiation-based, supplemented by traditional insulation Of the new water-based insulation coating. Recent studies have shown that functional materials, different blending methods and different proportions, for the thermal insulation coating has a great impact. Infrared powder heat absorption of the building has a certain emission function, can speed up the indoor cooling rate, is a new type of active cooling insulation coating. In addition, the base material with pure acrylic emulsion, pigments and fillers with high refractive index of rutile titanium dioxide and hollow glass microspheres prepared by the insulation coating, the reflective effect of insulation with the insulation filler content increased, When the content of hot filler reaches 13%, the effect of reflection heat insulation reaches the maximum. It was also reported that the use of xonotlite as barrier filler to rutile titanium dioxide and hollow glass beads for the functional filler can be prepared an excellent building exterior insulation coating. The results show that the addition of xonotlite, rutile titanium dioxide and hollow glass microspheres can improve the thermal insulation performance of the coating. The composite materials can further improve the thermal insulation performance. When the above functional fillers The reflectance of the coatings can reach 93.69% when the content is 9%, 30% and 15% respectively. Coating for the wavelength of 250 ~ 2500nm in the range of the maximum reflectivity of sunlight, the insulation temperature difference of up to 13 ℃.
