Spherical silica powder and its application

Spherical silica powder overview

Spherical silicon powder is a non-toxic, odorless, and non-polluting inorganic non-metallic material. It is made of natural quartz (SiO2) or fused quartz (amorphous SiO2 formed after high-temperature melting and cooling of natural quartz), which is crushed, ball milled (or vibrated, Jet mill), flotation, pickling purification, high-purity water treatment and other processes. In short, ultra-fine pulverization and purification are two important links in the preparation of silicon powder. Natural quartz mineral contains a lot of inclusions and cracks. The use of ultra-fine grinding technology can greatly reduce the number of cracks and defects. Combined with the purification process, the content of harmful impurities can be better reduced. As far as the current crushing technology is concerned, the equipment available for natural quartz minerals includes ball mills, mixers, jet mills, vibration mills, ball mills, vibration mills and classification systems. The product size is small and the system adjustment is more flexible.

As a functional powder filling material with excellent performance, microsilica powder is widely used in the copper clad laminate industry, epoxy resin packaging material industry, electrical insulating material industry and adhesive industry. The rapid development of downstream copper clad laminates and epoxy plastic packaging materials stimulates the continuous increase in demand for silicon powder. With the advancement of the 5G and semiconductor industries, related products are developing in a more refined direction, and the performance and quality requirements of silicon micropowder are getting higher and higher, and they can be mass-produced.

Why spheroidize? First of all, the surface of the sphere has good fluidity and is uniformly mixed with the resin to form a film. The resin is added in a small amount, and the fluidity is the best. The filling amount of the powder can reach the highest, and the weight ratio can reach 90.5%. Therefore, spheroidization means that as the filling rate of silicon powder increases, the higher the filling rate of silicon micropowder, the smaller the thermal expansion coefficient, the lower the thermal conductivity, and the closer to the single crystal silicon, the greater the thermal expansion coefficient, and the performance of the electronic components produced. The better. Secondly, the spheroidized plastic molding compound has the least stress concentration and the highest strength. When the stress concentration of corner powder molding compound is 1.

Application of spherical silica powder

The spherical silica powder technology is based on natural high-quality powdery quartz minerals. It is mainly made by two processes: 1. Using sol-gel technology, in the presence of dispersant and spherical catalyst, prepare high-purity spherical nano amorphous silicon powder that meets the requirements of electronic packaging materials; 2. Using flame method or The ion flame method melts into spherical amorphous silicon powder. In the high-end user market, for example, integrated circuit packaging is made using secondary processes.

Spherical silica powder is mainly used for large-scale integrated circuit packaging, and is also used in high-tech fields such as aviation, aerospace, fine chemicals, rewritable discs, large-area electronic substrates, special ceramics, and daily cosmetics. system. As a filler, it can save a lot of epoxy resin. The market prospect of spherical silica powder is broad. Experts predict that by 2010, my country's demand for spherical silica fume alone will reach 20,000 to 30,000 tons, and high-purity silica fume is 100,000 tons, with an average annual growth rate of more than 20%. The world's demand for spherical silica powder will exceed 300,000 tons, worth tens of billions. With the rapid development of my country’s microelectronics industry,

Spherical silica powder price

The price of spherical silica powder varies randomly with factors such as production cost, transportation cost, international situation, exchange rate, and market supply and demand of spherical silica powder. Tanki New Material Co., Ltd. aims to help various industries and chemical wholesalers find high-quality products by providing a full range of products. If you are looking for spherical silica fume, please contact us for the latest price of spherical silica fume.

Supplier of spherical silica powder

As a global supplier of spherical silica powder, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services