The uses, production processes, physical properties and optical properties of titanium dioxide

ABSTRACT:Titanium dioxide is a white pigment, its main ingredient is titanium dioxide In the end, titanium white powder
Titanium dioxide is a white pigment, its main ingredient is titanium dioxide. In the end, titanium white powder is also a chemical ingredient. It is recognized as the best white pigment in the world. Titanium dioxide is a kind of material with excellent thermal stability. It is an acidic amphoteric oxide. But with photochemical activity and hygroscopicity, there are three kinds of crystalline forms in nature: rutile, anatase and plate titanium. Titanium dioxide is widely used in coatings, plastics, papermaking, printing inks, chemical fiber, rubber, cosmetics, ceramics, enamel, electronics, food and medicine and other industries, with the largest proportion of paint, about 60%.
Use of titanium dioxide
1. Ink: the white pigment used in the printing industry is mainly made of titanium dioxide and lithopone two. Titanium dioxide not only has good physical and chemical stability, but also has good resistance to various kinds of substances, and has the characteristics of lower price than other ink materials.
2, plastic: the application of titanium dioxide in plastic products, in addition to its high covering power, high color resistance and pigment performance, it can also improve the heat resistance, light resistance and weather resistance of plastic products, so that plastic products from the invasion of UV light, improve the mechanical properties and electrical properties of plastic products.
3, paper: paper using titanium dioxide, good whiteness, high strength, glossy, thin and smooth, not penetrating when printing, under the same conditions, opacity is 10 times higher than calcium carbonate, talcum powder, and the weight can also reduce 15%~30%. Therefore, titanium dioxide must be used in decorative paper, Bible paper and paper money.
4, cosmetics: titanium dioxide is non-toxic, and almost all kinds of powder are used instead of lead white and zinc white. In the gouache and cold cream, titanium dioxide can reduce the feeling of greasy and transparent. Other kinds of spices, sunscreen, soap, white soap and toothpaste can also be used in titanium dioxide.
5, rubber: titanium dioxide in the rubber industry as a coloring agent, but also to strengthen, anti aging, filling role. It is mainly used for automobile tires, rubber shoes, rubber flooring, gloves, sports equipment and so on.
6. Coatings: coating is a viscous suspension consisting of base materials, pigments, solvents and auxiliaries. Titanium dioxide is used as a pigment in coatings. The pigment has the ability of covering and decorating, so as to achieve the beauty of decoration. At the same time, the pigment can enhance the mechanical strength and adhesion of the coating, and can prolong the service life of the coating.