TiO2 For Ink

Among the commonly used white pigments, titanium dioxide has the smallest relative density, the largest surface area and the highest pigment volume among the white pigments of the same mass.

Since anatase turns into rutile at high temperatures, the melting and boiling points of anatase titanium dioxide are practically non-existent. Only rutile titanium dioxide has melting point and boiling point, the melting point of rutile titanium dioxide is 1850℃, the melting point in air is (1830±15)℃, the melting point in rich oxygen is 1879℃, the melting point is related to the purity of titanium dioxide. The boiling point of rutile titanium dioxide is (3200±300)℃, at this high temperature titanium dioxide is slightly volatile.

Titanium dioxide has excellent electrical properties due to its high dielectric constant. In determining certain physical properties of titanium dioxide, the crystallographic direction of titanium dioxide crystals is taken into account. The dielectric constant of anatase titanium dioxide is relatively low, only 48.

Titanium dioxide has the properties of a semiconductor, its conductivity increases rapidly with temperature, and it is also very sensitive to the lack of oxygen. The dielectric constant and semiconductor properties of rutile titanium dioxide are very important to the electronics industry and can be used to produce electronic components such as ceramic capacitors.

According to the Mohs hardness ten system scale, rutile titanium dioxide for 6 ~ 6.5, anatase titanium dioxide for 5.5 ~ 6.0, so in the chemical fiber matte to avoid wear spinneret hole and use anatase titanium type.

Although titanium dioxide has hydrophilic, but its hygroscopicity is not too strong, rutile than anatase for small. The hygroscopicity of titanium dioxide is related to the size of its surface area, with a large surface area and high hygroscopicity, and also related to the surface treatment and nature.

Titanium dioxide is a thermally stable substance.

Titanium dioxide particle size distribution is a comprehensive index, which seriously affects the titanium dioxide pigment performance and product application performance, therefore, the discussion of covering power and dispersion can be directly analyzed from the particle size distribution.

The factors affecting the particle size distribution of titanium dioxide are more complex, the first is the size of the original particle size of hydrolysis, by controlling and adjusting the hydrolysis process conditions, so that the original particle size within a certain range. Second is the calcination temperature, metatitanic acid in the process of calcination, the particles undergo a crystalline transformation period and growth period, control the appropriate temperature, so that the growth of particles in a certain range. The last is the crushing of the product, usually the modification of Raymond mill and the adjustment of the analyzer speed to control the crushing quality, while other crushing equipment can be used, such as: universal mill, airflow crusher and hammer mill device.