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The role of titanium dioxide in ceramics
2024-05-13 16:00:49
A.What is titanium dioxide？
The main component of titanium dioxide is titanium dioxide, which is a compound composed of titanium metal and oxygen. In nature, titanium dioxide exists in a variety of minerals, such as rutile, anatase, etc. However, titanium dioxide used in industry is mainly obtained by synthetic method.
Titanium dioxide is an important inorganic chemical material, titanium ore through chemical reaction processing of white powdery material, chemical formula for TiO2, with high whiteness and hiding power, commonly used as pigments, coatings, plastics and rubber and other materials filler. In the ceramic field, titanium dioxide also plays an important role.
a)Improve glaze finish
Adding appropriate amount of titanium dioxide in the ceramic glaze can form a high brightness and strong gloss texture surface in the glaze, and improve the overall beauty of porcelain. Titanium dioxide can also play a role in the ceramic manufacturing process to promote the melting of the glaze, increase the fineness of the glaze film, reduce the surface tension of the glaze, so that the glaze is smoother and more uniform.
b)Increase the transparency of glaze
Titanium dioxide can absorb ultraviolet light, adding a certain amount of titanium dioxide in the glaze can increase the transparency and brightness of the glaze, making the porcelain surface more transparent.
c)Improve the stain resistance of porcelain
Due to the surface activity of titanium dioxide, it can react with porcelain to generate a composite enamel, which greatly improves the stain resistance of the ceramic surface. In this way, the ceramic surface can be cleaned more easily, and at the same time, the production of surface deposits and stains can be reduced.
d）Adjusting rheology and viscosity
Titanium dioxide can also be used to adjust the rheology and viscosity of the glaze, making it easier to coat and sintering.
a)Increase color brightness
Titanium dioxide can be mixed with other pigments, because of its excellent covering and whiteness, can increase the color and brightness of ceramic color materials.
b)Enhance the firmness of ceramic color materials
Many ceramic color materials have large particles, if no special treatment, it is easy to fall off in the firing process. As an excellent adhesive, titanium dioxide can enhance the cohesiveness of color particles and improve the firmness of color materials in the firing process.