Mar . 06, 2024 09:25 Back to list

Wollastonite is a kind of ultrafine silica powder material.

Wollastonite, a type of ultrafine silica powder material, is a versatile mineral known for its beneficial properties in various industries. With a high SiO2 content of around 90%, wollastonite is an excellent source of silica fume that can be utilized in a wide range of applications.

This unique material is derived from the process of smelting industrial silicon and ferrosilicon in high-temperature industrial electric furnaces. During this process, the dust produced from the exhaust gases is collected and treated by specialized trapping devices to obtain the silica fume. The resultant powder boasts an average particle size that is nearly at the nanometer level, making it highly sought after for its fine texture and composition.

Wollastonite's fine particles and high silica content make it ideal for use in various industries, including construction, ceramics, plastics, and even agricultural applications. Its exceptional properties, such as high brightness, low oil absorption, and chemical inertness, make wollastonite a preferred choice for enhancing the performance of products and materials. In essence, wollastonite's role as an ultrafine silica powder material is crucial in meeting the diverse and evolving needs of modern industries.

1, with good insulation: due to the high purity of silicon powder, low impurity content, stable performance, excellent electrical insulation performance, so that the cured material has good insulation properties and arc resistance.
2, can reduce the peak exothermic temperature of epoxy resin curing reaction, reduce the linear expansion coefficient and shrinkage rate of the cured material, so as to eliminate the internal stress of the cured material and prevent cracking.

3, corrosion resistance: silicon powder is not easy to react with other substances, and most acids, alkali can not react chemically, its particles are evenly covered on the surface of the object, with strong corrosion resistance.
4. Reasonable particle grading, which can reduce and eliminate precipitation and delamination when used; It can enhance the tensile and compressive strength of the cured material, improve the wear resistance, increase the thermal conductivity of the cured material, and increase the flame retardant property.

5, the silicon powder treated by silane coupling agent has good infiltration of various resins, good adsorption performance, easy to mix, no clumping phenomenon.
6, silicon powder as a filler, added to the organic resin, not only improve the performance of the cured material, but also reduce the cost of the product.

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