Nowadays, nano-coatings have been attracted by the public. Nano-coating technology has developed high-performance, environmentally-friendly and multi-functional architectural coatings, which have received high attention at home and abroad. As a nanomaterial composite technology that makes nanomaterials have good dispersibility and functionalization, it is one of the necessary technologies for nanotechnology to be applied to architectural coatings. In addition to high weather resistance, stain resistance and high color retention, high-grade architectural coatings also need to have various functions such as deodorization, killing (antibacterial), dustproof and thermal insulation. Because nano-scale TiO2 has the function of sterilizing, decomposing organic odor and self-cleaning under the action of light (including light and sunlight).
The surface of the car needs the protection and decoration of the paint. 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 are also required to have excellent durability, including resistance to UV rays, moisture, chemicals and acid rain, and scratch resistance.
Automotive topcoats are the key to determining the aesthetics of a car, so the coating must have high decorative (brightness), outdoor durability and stain resistance. Automotive topcoats are divided into two categories: monochrome topcoat and metal glitter topcoat. In order to meet the requirements of automobiles, especially high-end cars, domestic research on automotive topcoats has been carried out. Some paint factories have introduced foreign automotive topcoats or complete automotive coatings. When coated with a monochromatic topcoat or glitter topcoat of a different color, the aesthetics of the car is greatly increased.
Nanomaterials also have the effect of discoloration with angles. In automotive decorative coatings, as a rising star, the color-changing effect pigments are one of the most important and promising applications in nanomaterial applications. For example, the addition of nano-TiO2 to metal glitter topcoats such as automobiles and cars can produce rich and unpredictable color effects. When nanopowder and flash aluminum powder or mica pearlescent pigment are used in the coating system, it can reflect blue opalescence in the side light region of the coating's illumination zone, thereby increasing the fullness of the metal topcoat color and producing a unique visual effect.
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