Introduction to wollastonite-Amanda International Private Limited

Wollastonite is a triclinic system, thin plate-like crystals, and the aggregates are radial or fibrous. The color is white, sometimes with light gray, light red tones. Vitreous luster and pearl luster on the cleavage surface. The hardness is 4.5～5.5, and the density is 2.75～3.10g/cm3. Completely soluble in concentrated hydrochloric acid. Under normal circumstances, it is resistant to acid, alkali and chemical corrosion. Hygroscopicity is less than 4%. Low oil absorption, low conductivity and good insulation. Wollastonite is a typical metamorphic mineral, mainly produced in the contact zone between acid rock and limestone, and coexists with fushan stone and garnet. Also found in deep metamorphic calcareous crystalline schist, volcanic eruptions and some alkaline rocks. Wollastonite is an inorganic needle-like mineral, which is characterized by non-toxicity, chemical corrosion resistance, good thermal stability and dimensional stability, glass and pearl luster, low water absorption and oil absorption value, excellent mechanical and electrical properties, and certain properties. Reinforcing effect. The role of wollastonite powder.

Basic Features

Wollastonite is a kind of chain metasilicate, and it is also a kind of fibrous and needle-like. Because of its special crystal morphology and crystal structure, wollastonite has good insulation, high whiteness, good dielectric properties and high heat and weather resistance. Because wollastonite is widely used in ceramics, chemical industry, metallurgy, papermaking, plastics, coatings and other fields.

Basic classification

Coating grade wollastonite powder

It has a good reinforcement, which can not only improve the toughness and durability of the coating, but also keep the coating surface smooth and good gloss. Moreover, it improves the resistance to scrubbing and weathering, reduces the oil absorption of coatings and inks, maintains alkalinity, and has anti-corrosion capabilities. Can get high-quality bright color paint, and has good leveling and anti-aging properties. The coating can get better mechanical strength, increase durability, enhance adhesion and corrosion resistance. There is also good coverage and adhesion.

Plastic rubber grade wollastonite

With unique needle-like fibers, it has good insulation, wear resistance, and high refractive index. It is a good filling material for plastic and rubber products. Features and performance: Wollastonite powder can improve impact strength, enhance fluidity and improve tensile strength, impact strength, linear tensile and mold shrinkage.

Friction grade wollastonite powder

It is a special needle-like structure with unique physical and mechanical properties of wollastonite. Greatly enhances the friction resistance and heat resistance of the finished product. When the product is filled into it, the friction flexibility and stability can be improved.

Paper grade wollastonite powder

After special processing technology, it can still maintain its unique needle-like structure, so that the white board paper added with wollastonite powder can improve its whiteness, opacity (surface layer coverage), flatness, smoothness, adaptability, reduce Quantitative transverse difference and wet deformation of cardboard, improve printing adaptability, and can greatly reduce the use of various other raw materials, and reduce the cost of paper products in general.

Building materials grade wollastonite powder

It is a kind of non-toxic, odorless, non-radioactive and other advantages that gradually replace asbestos which is harmful to human health, and become a new raw material for environmental protection building materials in the new century. After special processing technology, it can still maintain its unique needle-like structure, which greatly improves the impact resistance, bending strength and wear resistance of materials such as silicon calcium board and fireproof board with wollastonite acicular powder. In the field of building materials, wollastonite will be more widely used!

Ceramic grade wollastonite powder

Adding an appropriate amount of wollastonite powder to the ceramic raw materials can greatly reduce the sintering temperature, shorten the sintering time, and realize low-temperature and rapid one-time sintering. It saves a lot of fuel and significantly reduces the cost of the product; at the same time, it improves the mechanical properties of the product, reduces the crack and warpage of the product, increases the luster of the glaze, and improves the strength of the embryo body, thereby improving the qualification rate of the product.