Talcum powder is mainly used as a flow aid, which can fill and fill the depressions on the particle surface and reduce the roughness of the particle surface, thus reducing the friction between particles and improving the fluidity.
Excessive use or long-term consumption of talcum powder is carcinogenic. According to the national standard GB2760-20 1 1, the maximum dosage of talcum powder in preserved fruits and fermented products (licorice products) is 20.0g/kg, which is mainly used as anti-caking agent.
Extended data
Types of talcum powder
1, chemical grade talcum powder
Used in rubber, plastic, paint and other chemical industries as reinforcing and modifying fillers. It is characterized by increasing the stability of product shape, improving tensile strength, shear strength, bending strength and compressive strength, reducing deformation, elongation and thermal expansion coefficient, high whiteness and strong particle size uniformity and dispersion.
2, ceramic grade talcum powder
Used for manufacturing high-frequency porcelain, radio porcelain, various industrial ceramics, building ceramics, daily-use ceramics and ceramic glazes. It is characterized by no discoloration at high temperature, enhanced whiteness after calcination, uniform density, good luster and smooth surface.
3. Cosmetic powder
High quality filler in cosmetic industry. It is characterized by containing a lot of silicon, which has the function of blocking infrared rays, thus enhancing the sunscreen and infrared resistance of cosmetics.
4. Paper grade talcum powder
Used for all kinds of high-grade and low-grade paper products. It is characterized by high whiteness, stable particle size and small wear. Paper made of this powder can achieve smooth and delicate paper, save raw materials and improve the service life of paper.
5. Brucite powder
It is used to manufacture electric porcelain, radio porcelain, various industrial ceramics, building ceramics, daily-use ceramics and ceramic glazes. It is characterized by no discoloration at high temperature, enhanced whiteness after calcination, uniform density, good gloss and smooth surface.
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