Do you know all uses of wollastonite?-2 BY:Danny
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- publisher
- 、Saskia
- Issue Time
- Jan 8,2025
Summary
Wollastonite products can be divided into two categories: high aspect ratio wollastonite and finely ground wollastonite
What are the main types of wollastonite The main types of wollastonite include the following:
3. Replacing fiberglass as a reinforcing filler for plastics
Wollastonite is the most promising, value-added, and rapidly growing application field for fillers. At present, this field accounts for about 25% of the world's total consumption of wollastonite. Wollastonite can replace or partially replace fiberglass as a reinforcing material for polymer composites, improving material properties, reducing costs, and playing a dual role of increment and reinforcement. At present, the focus of research on the application of wollastonite is on the use of wollastonite filled composite materials in electronic components, packaging materials, high-performance rubber products, automotive shells, molds, and optical disc materials. The filling amount of silica fume reinforced nylon modified with silane coupling agent can reach 50%, the impact strength is increased by more than 20 times, and it has extremely low moisture absorption rate; Ultra fine modified high aspect ratio wollastonite and carbon fiber filled polytetrafluoroethylene resin can be used to make durable and leak proof automatic sealing rings, which are applied in pressure reducing valves, butterfly valves, and compressor shafts.
4. As a substitute for asbestos
In different products, specific wollastonite powder is used instead of lithopone, some titanium dioxide, white carbon black, light calcium, clay, etc., and most of the performance indicators of the products are improved. The application results show that wollastonite can improve the covering ability of white coloring agents and play a certain whitening role; Used in light colored adhesive materials, it can replace a large amount of titanium dioxide, clay, and lithopone, playing a certain reinforcing role and reducing product costs. The combination of wollastonite and coupling agent can improve the properties of the adhesive and expand its application range.
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