Nowadays, nano coatings have been attracted by the public. The development of nano coating technology with high performance, environmental protection and multi-functional architectural coatings has been highly valued at home and abroad. As a nanomaterial composite technology that makes nanomaterials have good dispersion and functionalization, it is one of the professional technologies necessary for the application of nanotechnology in architectural coatings. In addition to high-grade weather resistance, stain resistance and high color retention, high-end architectural coatings also need to have various functions such as deodorization, anti-bacterial (anti-) bacteria, dustproof and thermal insulation. Because nano-scale TiO2 has the functions of sterilization, decomposition of organic odor and self-cleaning under the influence of light (including light and sunlight).
The surface of the car needs the protection and decoration of the coating. The quality of the coating not only determines the beauty of the car, but also directly affects the market competitiveness of the car. Therefore, in addition to high decorativeness, automotive topcoats also require excellent durability, including resistance to ultraviolet rays, moisture, chemicals, and acid rain, and resistance to scratches.
Automobile topcoat is the key to ultimately determine whether the car is beautiful or not, so the coating must have high decorativeness (brightness), outdoor durability and stain resistance. Automotive topcoats are divided into two categories: monochromatic topcoats and metallic flash topcoats due to their aesthetic luxury. In order to meet the requirements of automobiles, especially high-end cars, many researches have been carried out on automobile topcoats in China, and some paint factories have introduced foreign automobile topcoats or a full set of automobile coatings. When applied with different colors of monochromatic topcoat or flash topcoat, the aesthetics of the car is greatly increased.
Nanomaterials also have the effect of changing color with the corners. In the decorative spraying of automobiles, the up-and-coming color-changing effect pigments are one of the most important and promising applications in the application of nanomaterials. For example, the addition of nano-TiO2 to metallic flashing finishes such as cars and cars can make the coating produce rich and unpredictable color effects. Nano-powder, glitter aluminum powder or mica pearlescent pigment, when used in coating systems, can reflect blue opalescence in the side light area of ​​the illuminated area of ​​the coating, thereby increasing the fullness of the color of the metal topcoat and producing a unique visual effect.
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