Titanium dioxide is an important inorganic chemical white pigment, and its main component is titanium dioxide. The scientific name of titanium dioxide is titanium dioxide, which is a dye and pigment. Titanium dioxide is widely used in coatings, plastics, papermaking, rubber, printing ink, chemical fiber, ceramics, daily chemicals, medicine, food and other industries. Titanium dioxide is an important white pigment and enamel.
Adding titanium dioxide to paper makes the paper white and opaque, and the effect is 10 times greater than other substances. So titanium dioxide should be added to coated paper. In order to lighten the color of plastic and soften the luster of rayon, titanium dioxide is sometimes added. In the rubber industry, titanium dioxide is also used as a filler for white rubber.
Main uses of titanium dioxide
1. Ink: The white pigments used in the ink manufacturing industry are mainly titanium dioxide and lithopone. Among them, titanium dioxide not only has good physical and chemical stability, but also has good printing resistance, which is characterized by lower price than other ink materials.
2. Plastics: The application of titanium dioxide in plastic products can not only make use of its high hiding power, high decoloring power and pigment performance, but also improve the heat resistance, light resistance and weather resistance of plastic products, thus protecting plastic products from ultraviolet radiation and improving the mechanical and electrical properties of plastic products.
3. Papermaking: Paper made of titanium dioxide has good whiteness, high strength, luster, thinness and smoothness, and is impermeable when printed. Under the same conditions, the opacity is 10 times higher than that of calcium carbonate and talcum powder, and the weight can also be reduced by 15%~30%. Therefore, decorative paper, bible paper and paper money must use titanium dioxide.
4, cosmetics: titanium dioxide is non-toxic, almost all kinds of powders use it to replace lead white and zinc white. In gouache and cold cream, titanium dioxide can weaken the feeling of greasy and transparent. Titanium dioxide can also be used in other spices, sunscreens, soap flakes, white soap and toothpaste.
5. Rubber: Titanium dioxide is not only used as a colorant in the rubber industry, but also has the functions of reinforcement, anti-aging and filling. Mainly used in automobile tires, rubber shoes, rubber floors, gloves, sports equipment, etc. Usually anatase type.
6. Coatings: Coatings are viscous suspensions composed of base materials, pigments, solvents and additives. Titanium dioxide is used as a pigment in coatings. Pigment has the ability to cover and decorate, so as to achieve the role of decorative beauty.
Baidu Encyclopedia-Titanium Dioxide