Colored building energy-saving heat-reflective heat-insulating coatings are prepared with high-temperature sintered colored ceramic hollow microspheres and high-refractive index TiO2 as the main functional fillers, and the heat reflection ratio to sunlight can reach more than 80%. The thermal conductivity of the color building energy-saving heat-reflecting heat-insulating coating is low, and the near-infrared reflectance is significantly higher than that of ordinary coatings. Compared with dyed hollow microspheres, it has excellent acid and alkali resistance, weather resistance and high temperature resistance. It has broad application prospects in terms of energy saving and industrial storage insulation.
Ceramic hollow microspheres with a certain particle size distribution are used as the matrix, and ceramic hollow microspheres coated with colored metal oxide pigments are prepared through high-temperature sintering technology and color matching technology. Colored building energy-saving heat-reflective heat-insulating coatings use colored ceramic hollow microspheres as functional pigments and fillers, which have the characteristics of high near-infrared reflectivity and good thermal stability.
The formula design of color building energy-saving heat-reflecting heat-insulating coatings is shown in Table 1.
Table 1 Formula design of color building energy-saving heat-reflecting and heat-insulating coatings
raw material | Amount (mass fraction)/% |
XG-2600 pure acrylic emulsion | 75~85 |
Series of colored hollow microspheres | 12~16 |
plain color cenospheres | 12~16 |
Color paste | 3~5 |
Precipitated Barium Sulfate | 20~25 |
A-10 defoamer | Appropriate amount |
H-34 Pigment Dispersant | 5~8 |
After mixing each component material according to the formula, disperse with a high-speed disperser. The speed of the disperser is 2300~2500 r/min, and the dispersion time is 30 min.