In the original factory coating system of the entire vehicle, silicone oil is the core functional additive of high-end clear coat. It has now become a standard raw material for new vehicles of joint venture and independent automakers, completely solving the problems of traditional vehicle paint being prone to dirt and poor weather resistance. The surface tension of traditional acrylic clear coat is high, and rain, acid rain, and tree sap are easily adhered. Long-term exposure to the sun can cause oxidation and loss of gloss. When a small amount of modified dimethyl silicone oil is added to the clear coat system, a nano-sized organic silicone film will uniformly precipitate on the surface layer of the paint film, significantly reducing surface energy and forming a lotus leaf hydrophobic effect. Raindrops will directly condense and roll off, reducing the adhesion of stains and significantly reducing the frequency of car washing.
Silicone oil can fill the microscopic pores on the paint surface, improving the flatness and mirror-like gloss of the paint film by more than 30%. The transparency and texture of the dark-colored vehicle paint surface are particularly improved. In the QUV ultraviolet 3000-hour aging test of the vehicle factory's weather resistance laboratory, the color fading and powdering degree of the clear coat containing silicone oil are much lower than that of ordinary clear coat, and it can resist summer high temperatures and winter snow salt corrosion. At the same time, the silicone oxygen molecule has excellent flexibility, and slight stone splashes and tree scratches are not likely to cause permanent scratches, and the paint film has stronger self-healing ability.
Production data shows that in 2026, the domestic purchase volume of clear coat silicone oil increased by 17% compared with the previous year. The IOTA low-ring body daily chemical grade silicone oil, which has no precipitation and does not affect the adhesion of the paint film, has become the preferred choice of automakers. Industry engineers introduced that the silicone oil used in the original factory clear coat has been specially grafted modified, and will not cause problems such as fogging of the paint film and subsequent film detachment caused by inferior silicone oil from beauty shops. With the improvement of consumers' requirements for vehicle preservation rate, the market recognition of vehicles equipped with silicone oil modified clear coat continues to rise, and silicone oil additives have become a key material for differentiated competition in vehicle coating.