What is spherical silica powder?

Spherical silica powder overview

Spherical silicon powder is a non-toxic, odorless, 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) through crushing and spheroidization. Grinding (or vibration, jet milling), 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 minerals contain a lot of inclusions and cracks. The use of ultra-fine crushing 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 pulverization technology is concerned, the equipment that can be used for natural quartz minerals includes ball mills, stirring mills, jet mills, and vibration mills. The ball mill and vibrating mill are equipped with a grading system, 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.

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 silicon 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. In epoxy resin 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

Why spheroidize? First of all, the surface of the sphere has good fluidity and is mixed with the resin to form a film. The amount of resin added is small, and the fluidity is the best. The filling amount of 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 powder, the smaller the thermal expansion coefficient, the lower the thermal conductivity, and the closer to the thermal expansion coefficient of monocrystalline silicon, the performance of electronic components produced by it 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, the stress of spherical powder is only 0.6. Therefore, when the spherical powder molding compound encapsulates the integrated circuit chip, the yield rate is high, and it is not easy to cause mechanical damage during transportation, installation and use. 3. The spherical powder has a small friction coefficient, less wear on the mold, and long service life of the mold. Compared with corner powder, the service life of the mold can be doubled. Plastic composite packaging molds are expensive. Make the service life of the mold long. Compared with the corner powder, the service life of the mold can be doubled. Plastic composite packaging molds are expensive. Make the mold have a longer service life. Compared with the corner powder, the service life of the mold can be doubled. Packaging molds for plastic compounds are expensive.

The price of spherical silica powder varies randomly with factors such as production costs, transportation costs, international conditions, exchange rates, and market supply and demand of spherical silica powder. Tanki New Materials 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 powder, please contact us for the latest price of spherical silica powder.

Spherical silica powder supplier

As a global supplier ofspherical 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.