The plastics industry is the second largest user of titanium dioxide
The composition of plastics includes resin, filler, plasticizer and other additives (such as coloring agent, anti-aging agent, flame retardant, etc.), which can be divided into plastic film extrusion blow molding process and plastic sheet extrusion according to product processing methods. The molding process and the plastic injection molding process. The plastics industry is the second largest user of titanium dioxide, the fastest growing field in recent years, with an average annual growth rate of 6%. Of the more than 500 titanium dioxide grades in the world, more than 50 grades are plastic-specific. In addition to its high hiding power, high achromatic power and other pigment properties, the application of titanium dioxide in plastic products can also improve the heat resistance, light resistance and weather resistance of plastic products, and protect plastic products from UV light. Invasion, improving the mechanical and electrical properties of plastic products. Since plastic products are much thicker than paints and inks, they do not require too much pigment volume concentration, and their high hiding power and strong tinting strength are generally only 3% to 5%. It is used in almost all thermosetting and thermoplastic plastics, such as polyolefins (mainly low-density polyethylene), polystyrene, ABS, polyvinyl chloride, etc., which can be mixed with resin dry powder or The liquid phase of the plasticizer is mixed, and some are used after processing the titanium dioxide powder into the masterbatch.