MicrosilicaIndustry Knowledge Silicon micropowder is made of natural quartz (SiO2) or fused quartz (amorphous SiO2 after natural quartz is melted at high temperature and cooled) after crushing, ball milling (or vibration, jet milling), flotation, pickling purification, high-purity water treatment Micro-powder processed by multiple processes. Silicon micro-powder is a non-toxic, odorless, non-polluting inorganic non-metallic material. Because it has good temperature resistance, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion , stable chemical properties, high hardness and other excellent properties, are widely used in chemical industry, electronics, integrated circuits (IC), electrical appliances, plastics, coatings, paints, rubber, national defense and other fields. With the rapid development of high-tech fields, silicon micropowder It will also enter a new historical development period.
In general, we can divide silicon micropowder into the following types: ordinary silicon powder, electrical grade silicon powder, electronic grade silicon powder, fused silicon powder, ultra-fine silicon powder, and "spherical" silicon powder. Among them, ordinary silicon powder Mainly used in epoxy resin castables, potting materials, welding electrode protective layer, metal casting, ceramics, silicone rubber, coatings and other chemical industries.
The electrical grade silicon powder is mainly used for the insulating casting of ordinary electrical devices, the insulating casting of high-voltage electrical appliances, APG process injection materials, epoxy potting materials, high-grade ceramic glazes, etc.
Electronic grade silicon powder includes integrated circuits, plastic packaging materials and packaging materials for electronic components.
The fused silica micropowder fused silica micropowder (WG) is made of amorphous SiO2 after being smelted at high temperature, cooled, and processed by multiple processes. The product has high purity and has a small thermal expansion coefficient. Excellent properties such as low internal stress, high humidity resistance, and low radioactivity.