Application in coatings


Nano-SiO2 has special optical properties that conventional SiO2 does not have. It has extremely strong ultraviolet absorption and infrared reflection characteristics. When added to coatings, it can shield the coatings, achieve the purpose of anti-ultraviolet aging and heat aging, and increase the thermal insulation of the coatings. Nano-SiO2 has a three-dimensional network structure, a large specific surface area, and great activity. It can form a network structure when the coating is drying, while increasing the strength and smoothness of the coating, and also improving the suspension of the pigment, which can keep the color of the coating unchanged for a long time. In the interior and exterior wall coatings of buildings, if nano-SiO2 is added, the opening effect of the coating can be significantly improved, the coating will not be layered, and it has thixotropy, anti-sagging, and good construction performance, especially the anti-fouling performance is greatly improved, and it has excellent self-cleaning ability and adhesion. Nano-SiO2 can also be used with organic pigments to obtain photochromic coatings.