Application of titanium dioxide in industry

Based on titanium dioxide has a high refractive index, strong discoloration, hiding power, good weather resistance, strong dispersion, good gloss, physical and chemical properties of stability and many other excellent characteristics.

So it is the largest amount, the best quality, the most widely used white pigment. It is an indispensable raw material in electronics, chemical industry, light industry and metallurgy industries. It is an important chemical product with a wide range of application prospects.

Application in paint

Coating is a viscous suspension composed of pigments, oils, lacquers (resins), solvents and driers.

White pigment is the most widely used pigment, white paint and light paint are used in it, so in the paint, the amount of white pigment is much more than other pigments.

The white pigments that can be used for lacquer are zinc white, zinc barium white and titanium dioxide.

Due to the development of coating industry varieties, the emergence of synthetic resin coating, its polymerization degree is large, such as adding zinc white, because zinc white has alkaline, and the free fatty acid in the coating, and has the tendency to thickens; If zinc barium white is added, the weather resistance is poor.

However, the use of titanium white, can improve the above shortcomings, because titanium white particles small and uniform, high photochemical stability, covering rate than zinc white, zinc barium white more than two times, 5~6 times larger achromatosis, so can greatly reduce the amount of pigments in the paint.

At the same time made of paint color is good, not easy to yellow, and has heat resistance and acid resistance, sulfur resistance, alkali resistance and other chemical stability, especially rutile titanium dioxide, its structure is stable, weather resistance is better than anatase type, UV resistance, outdoor will not powder and other advantages.

Therefore, it is suitable for all kinds of advanced ships, Bridges, automobiles, buildings and other outdoor coatings with high weather resistance. 

Anatase titanium dioxide is generally only used for indoor coatings.

Applications in plastics

Plastic is a mixture of resin, plasticizer, filler and colorant. It has light weight, corrosion resistance, friction resistance, high mechanical properties, good electrical insulation, easy to process, beautiful and other characteristics.

It can be used as structural material, insulation material and corrosion resistant material, and is widely used in various departments of national economy, military industry and cutting-edge science and technology.

 In order to make the plastic have a beautiful color, a certain amount of color is often added to the plastic.

The requirements for the pigment are easy to color and disperse during processing, and do not react chemically with other components in the plastic.

Because of the high whiteness of titanium dioxide, the discoloration force is large, has good opacity and chemical stability, with titanium dioxide instead of Lithopone, the amount of white pigment can be reduced by 2 to 3 times, so the manufacture of white or colored plastic necessary coloring filler, is the best white pigment.

Application in ink

Ink is a viscous fluid composed of pigments, fillers, additives and color development agents.

At present, printing newspapers, books, pictures and printed iron, metal, porcelain, rubber, plastic and printed radio semiconductor circuit boards are inseparable from ink.

Because titanium dioxide has large hiding power, high achromotic power, fine particles, resistance to dilute acid and alkali, light resistance, heat resistance, not easy to yellow, good hydrophobicity, small mobility, insoluble in the development agent and can be evenly dispersed in the development agent, so it is an indispensable pigment for advanced white ink and light ink.

Application in chemical fiber

Titanium dioxide is an indispensable auxiliary material in chemical fiber production.Most of the chemical fibers themselves are transparent and shiny.

In order to eliminate this gloss, make its transparency similar to natural fiber, it is necessary to add matting agent to reduce gloss in the manufacture, and titanium dioxide refractive index is high, achromats strong, hiding power is large, whiteness is good, particles are fine and uniform, good dispersion, good chemical stability, processing is not easy to change, and does not affect the tensile force and dyeing of the fiber.

Applications in the rubber industry

In the rubber industry, in order to improve the technical performance of raw rubber in the processing process and the performance of vulcanizing rubber, it is necessary to add vulcanizing agent, accelerator, active agent, antioxidant, reinforcing agent and colorant and other several or more kinds of auxiliaries to make rubber physical and chemical changes.

Titanium dioxide is a very good colorant, because of its stable physical and chemical properties, small particles, does not contain impurities that damage the vulcanization process, will not damage the vulcanization process, due to its discoloration and hiding power, the use of a small amount of titanium dioxide can achieve the best coloring effect, and the tensile resistance of products, elongation and bending properties have no effect.

At the same time, the ability to resist the sun is strong, does not crack under the sun, does not change color, so the general white and light color rubber products without titanium dioxide.

Application in cosmetics

Because titanium dioxide is non-toxic, only 5% ~ 8% titanium dioxide can be added in cosmetics to get permanent white, so that cosmetics have more adhesion, absorption and hiding power, and play a role in protecting the skin.

Application in paper industry

Because titanium dioxide in the white pigment, has the highest refractive index and achromatosis force, fine particles, good dispersion, opacity, physical and chemical stability, in the papermaking process does not change with other substances of excellent performance.

Therefore, the filler and pigment used for pulp make the paper improve whiteness and enhance opacity, which is other white filler and white pigment with low refractive index can not be compared.