培林企業有限公司

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　Talc is a magnesium silicate mineral possessing distinctive dry slipperiness, low hardness, and a high melting point. It offers excellent electrical and thermal insulating properties, low thermal expansion, good dispersion and covering ability, and excellent water repellency and affinity for oil. It is very slippery and has a low coefficient of friction. Its chemical characteristics are stable. It resists corrosion from acids and alkalis. Thanks to talc's stable chemical characteristics, it is widely used by the papermaking, chemical engineering, paint, ceramics, cable, and rubber industries.
　Talc powder can improve the molding, extension, extrusion, and injection performance of rubber and plastic. It can reduce raw material costs by replacing a portion (10%-15%) of more costly materials (such as resins). It can improve the physical properties of paints and coatings, and resists sunlight, heat, and discoloration due to UV exposure. It can help paints retain their original color and luster over prolonged periods of time. Talc can improve resistance to acids, alkalis, and water. It resists contamination and aging, increases abrasion resistance and steam assistance, and enhances flame retardant performance.
　

Uses
　Talc powder has an extremely wide range of uses. The greatest demand is from the papermaking industry, followed by the waterproof materials industry.

1.Papermaking industry
　Talc powder is used in three different ways in papermaking: as a filler, and coatings, and as a pulp resin controller. Talc yields strong, pure white paper. It can increase opacity and brightness, and and enhance ink adsorption. Talc is a highly effective color fixative, and can ensure excellent colors on printed products.
　Talc has a very low concave abrasion value, so it causes extremely little wear to papermaking and printing equipment. Because its density is less than that of TiO2, talc is a superior filler to titanium dioxide. Talc powder is also far less expensive than titanium dioxide, which makes it highly competitive.
　Talc powder has been used successfully to remove ink from waste paper, enabling the effective deinking of waste paper during the floatation and washing stages.

2.Waterproof materials industry
　Talc powder can be used as a filler in building materials such as linoleum, building facing paper, asphalt shingles, and building panels, and can also be applied to building facing materials as an anti-stick agent. Talc used as a filler in asphalt products also serves as a stabilizer, and increases the stability and weathering resistance of building materials. Talc powder can be sprinkled on asphalt shingles or rolled building facing materials to prevent sticking during production and storage. The waterproof materials industry typically uses low-grade colored and impure coarsely-ground talc powder.

3.Other industries
　Talc has many important uses in the plastic industry, rubber industry, cable industry, ceramics industry, paints and coatings industry, and textile industry.

Specifications
KING SIGMA CORP Talc powder
Grade	UFO	N-A 2500	N-A 1250	S-A 950	S-A 325	K-S 900	A-L 500
Chemical analysis
SiO2	62	62	61	61.5	60.8	60.6	57
MgO	31.3	31.3	31.2	31.5	31.2	31.4	31.5
Al2O3	0.1	0.1	0.12	0.1	0.25	0.2	0.4
Fe2O3	0.25	0.25	0.26	0.25	0.3	0.28	0.4
CaO	0.43	0.43	0.5	0.5	0.5	0.5	0.8
Loss on ignition	5.8	5.8	6	6	6	6	8

Physics properties
Whiteness	95°	95°	93°	95°	90°	90°	89°
Mesh				325	325	325	325
pH	8.5±0.5	8.5±0.5	8.5±0.5	8.5±0.5	8.5±0.5	8.5±0.5	8.5±0.5
Density	2.65±0.05	2.65±0.05	2.65±0.05	2.65±0.05	2.65±0.05	2.65±0.05	2.65±0.05
Oil absorption	60ml/100g	50ml/100g	48ml/100g	42ml/100g	40ml/100g	38ml/100g	40ml/100g
Average particle size(μ)	1.7±0.5	3.5±0.5	7±0.5	9.5±1	10.5±1	10.5±1	12±1

Major uses
Pharmaceuticals	⊙	⊙	⊙	⊙
Cosmetics	⊙	⊙	⊙	⊙	⊙	⊙
Paints and coatings	⊙	⊙	⊙	⊙	⊙	⊙	⊙
Plastics	⊙	⊙	⊙	⊙	⊙	⊙	⊙
Rubber	⊙	⊙	⊙		⊙	⊙	⊙
Paper	⊙	⊙	⊙		⊙	⊙	⊙