High purity spherical silicon powder
Spherical silicon powder is also called spherical quartz powder, which refers to the amorphous quartz powder material whose particles are spherical and whose main component is silicon dioxide. It is widely used in large-scale integrated circuit packaging, copper-clad boards, epoxy plastic packaging fillers, aerospace , Fine chemicals and daily cosmetics.
In recent years, with the rapid development of China's microelectronics industry, large-scale and ultra-large-scale integrated circuits have increasingly higher requirements for packaging materials, not only for their ultra-fineness, but also for their high purity, especially for the spherical shape of particles. .
Spherical silicon fine powder can reach micron, submicron and nanometer in particle size. It has a series of excellent characteristics such as high dielectric, high heat resistance, low expansion, etc. It is an epoxy plastic sealing material for large-scale integrated circuit packaging materials and copper clad laminates. The lack of fillers accounted for 70% to 90% of the molding compound and 20% to 30% of the mixed casting ratio of copper clad laminates. It can also be used in high-tech fields such as aerospace, fine chemicals, large-area electronic substrates, and special ceramics.
According to the development plan of China ’s semiconductor integrated circuits and devices, in the next 4-5 years, China ’s demand for spherical silicon powder will reach more than 100,000 tons. At present, the amount of spherical silicon powder used only in ultra-large-scale integrated circuit packaging materials in China has exceeded 3000 tons.