What are the product characteristics and uses of talc?

The main component of talc is talc, the main component of talc is talc aqueous magnesium silicate, the crystal is pseudohexagonal or diamond-shaped flakes. Usually in dense lumps, leaf-like, radial, fibrous sets. Colorless, transparent or white, but appears light green, light yellow, light brown, or even light red due to the small amount of impurities. Hardness 1, specific gravity 2.7 ~ 2.8.

The structure has a layered structure, and it is easy to slip or fall off between the two adjacent layers. So what are the product characteristics and uses of talcum powder? Quante Xiaobian introduces you today.

First, the product features:

1. Talc has excellent physical and chemical properties such as fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good hiding power, softness, good gloss, strong adsorption, etc. Because the crystalline structure of talc is layered, it has the tendency to become scales and special slipperiness, if the content of Fe2O3 is very high, it will reduce its insulation.

2. Talc has anti-viscosity, flow assistance, fire resistance, acid resistance, insulation, high melting point, chemical inactivity, good hiding power, softness, good gloss, strong adsorption and other excellent physical and chemical properties, because the crystalline structure of talc is layered, so it has a tendency to become easy to become scales and special slipperiness, if the content of Fe2O3 is very high, it will reduce its insulation.

Second, the product use:

Talc powder is widely used in paints, inks, coatings, plastics, rubber, ceramics, glass, electronics, cosmetics, food and other fields.

(1) Talc chemical grade: used in rubber, plastics, paints, and other chemical industries as a reinforcing filler. Features: product shape stability, tension strength, shear strength, flexural strength, pressure strength, reduced deformation, elongation, thermal expansion coefficient, high whiteness, particle size uniform dispersion and other characteristics.

(2) Talc ceramic grade: used for the manufacture of high-frequency porcelain, radio porcelain, ceramics, architectural ceramics, daily ceramics and ceramic glaze. Features: high temperature does not change color, whiteness is enhanced after forging, density is uniform, good gloss, smooth surface.

(3) Talc cosmetic grade (HZ): used in various emollient powders, talk powders, etc. Tablets, icing, prickly heat powder

(4) Talc food with isolating agent, etc.

(5) Talc coating grade (TL): used for white body pigments and various types of water-based, oil-based, resin industrial coatings, primers, protective paints, etc.

(6) Talc paper grade (ZZ): used for all kinds of paper and cardboard filler, wood asphalt control agent.

(7) Talc plastic grade (SL): used in polypropylene, nylon, polyvinyl chloride, polyethylene

Product specifications

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Projects

index

Silica content, %

58.0±2.0

Magnesium oxide content,%

28.0±2.0

Calcium Oxide Content,%

≤1.8

Moisture, %

≤0.5

Ph

9.0-9.5

Burn loss,%

≤8.0

Whiteness

45 μm sieve residue,

D97 Particle size, μm

44.5-45.5

Oil absorption, g/100g

25-35

Fineness, mesh

1250