titanium dioxide

use Titanium dioxide is considered to be the best white pigment in the world, which is widely used in coatings, plastics, paper making, printing ink, chemical fiber, rubber, cosmetics and other industries. Titanium dioxide (titanium dioxide) has stable chemical properties and does not react with most substances in general. There are three kinds of crystals of titanium dioxide in nature: platy titanium, anatase and rutile. Titanium plate is an unstable crystal form and has no industrial use value. Anatase (referred to as A) and Rutile (referred to as R) have stable crystal lattices, which are important white pigments and porcelain glazes. Compared with other white pigments, they have superior whiteness, tinting power, hiding power, weather resistance, heat resistance and chemical stability, especially no toxicity. Titanium dioxide is widely used in coatings, plastics, rubber, ink, paper, chemical fiber, ceramics, daily chemicals, medicine, food and other industries. Coating industry is the biggest user of titanium dioxide, especially rutile titanium dioxide, which is mostly consumed by coating industry. Coatings made of titanium dioxide have bright colors, high hiding power, strong coloring power, low consumption and many varieties, which can protect the stability of the medium, enhance the mechanical strength and adhesion of the paint film, prevent cracks, prevent ultraviolet rays and moisture from penetrating and prolong the life of the paint film. Plastic industry is the second largest user. Adding titanium dioxide into plastics can improve the heat resistance, light resistance and weather resistance of plastic products, improve the physical and chemical properties of plastic products, enhance the mechanical strength of products and prolong the service life. Paper industry is the third largest user of titanium dioxide. As paper filler, it is mainly used in high-grade paper and thin paper. Adding titanium dioxide into paper can make the paper have better whiteness, good luster, high strength, thin and smooth, non-penetrating when printing and light weight. Titanium dioxide for paper making generally uses anatase titanium dioxide without surface treatment, which can play the role of fluorescent whitening agent and increase the whiteness of paper. However, the laminated paper requires the use of rutile titanium dioxide after surface treatment to meet the requirements of light resistance and heat resistance. Titanium dioxide is also an indispensable white pigment in high-grade inks. Ink containing titanium dioxide is durable, does not change color, has good surface wettability and is easy to disperse. Titanium dioxide used in ink industry has rutile type and anatase type. Textile and chemical fiber industry is another important application field of titanium dioxide. Titanium dioxide for chemical fiber is mainly used as matting agent. Since anatase is softer than gold red, anatase is generally used. Titanium dioxide for chemical fiber generally does not need surface treatment, but some special varieties need surface treatment in order to reduce the photochemical action of titanium dioxide and avoid the degradation of fibers under the photocatalytic action of titanium dioxide. Enamel industry is an important application field of titanium dioxide. Enamel grade titanium dioxide has the advantages of high purity, good whiteness, fresh color, uniform particle size, strong refractive index, high decoloring power, strong opaqueness and opacity, which makes the coating thin, smooth and acid-resistant after enameling, and can be mixed with other materials evenly, without caking and easy to melt in the enamel manufacturing process. Ceramic industry is also an important application field of titanium dioxide. Ceramic grade titanium dioxide has the characteristics of high purity, uniform particle size, high refractive index, excellent high temperature resistance, and no ash change at 1200℃ for 1 hour. With high opacity, thin coating and light weight, it is widely used in ceramics, architecture, decoration and other materials.