Spherical silica micropowder and its application

 Overview of spherical silica powder

Spherical silica fume is a non-toxic, odorless, non-polluting inorganic non-metallic material. It is made of natural quartz (SiO2) or fused silica (amorphous SiO2 after high temperature melting and cooling of natural quartz) through crushing and ball milling (or vibration, jet milling), flotation, acid washing purification, high-purity water treatment and other processes. In short, ultra-fine grinding and purification are two important links in the preparation of silicon micropowder. Natural quartz minerals contain a large number 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 pulverization technology is concerned, the available equipment for natural quartz minerals includes ball mills, mixers, jet mills, vibration mills, ball mills, vibration mills and classification systems. The product particle size is small and the system adjustment is more flexible.

Why spheroidize? First of all, the surface of the sphere has good fluidity and can be 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 the thermal expansion coefficient of single crystal silicon is. The better the performance. Secondly, the spheroidized plastic molding compound has the smallest stress concentration and the highest strength.

Application of spherical silica powder

As a functional powder filling material with excellent performance, silicon micropowder is widely used in the copper clad laminate industry, epoxy plastic packaging material industry, electrical insulating material industry and adhesive industry. The rapid development of downstream copper clad laminates and epoxy plastic packaging materials has stimulated the increasing demand for silicon micropowder. With the advancement of 5G and the semiconductor industry, related products are developing in a more refined direction, and the performance and quality requirements of silicon micropowder are also increasing. The higher it is, the mass production can be formed.

The spherical silica powder technology is based on natural high-quality powdered quartz minerals as the basic raw material. It is made by two main processes: 1. Using sol-gel technology, in the presence of dispersant and spherical catalyst, high-purity spherical nano-amorphous silicon powder that meets the requirements of electronic packaging materials is prepared; 2. Using flame method or It is melted into spherical amorphous silicon powder by ion flame method. In the high-end user market, such as integrated circuit packaging is made by secondary process.

Spherical silicon powder is mainly used in LSI packaging. It is also used in high-tech fields such as aviation, aerospace, fine chemicals, rewritable optical discs, large-area electronic substrates, special ceramics and daily cosmetics. For epoxy resin systems. As a filler, a lot of epoxy resin can be saved. The market prospect of spherical silica micropowder is broad. Experts predict that by 2010, the demand for spherical silicon powder in my country will reach 20,000 to 30,000 tons, and high-purity silicon powder will reach 100,000 tons, with an average annual growth rate of more than 20%. The world's demand for spherical silicon powder 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 the production cost, transportation cost, international market, exchange rate, market supply and demand and other factors of spherical silica powder. Tanki New Materials Co.,Ltd aims to help various industries and chemical wholesalers find high-quality products by offering 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 of spherical microsilica, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered 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.

Technical Parameter of Spherical quartz powder Spherical SiO2：
Test Items		Unit	Typical value	Test Method
Chemical Composition	SiOB2B	%	99.9	Weight Method
	FeB2BOB3B	ppm	105	Spectrophotometer
Moisture		%	0.08	Weight Method
Whiteness		%	94.5	Whiteness Meter
Extraction Water	Ec	μS/cm	13	Conductivity Meter
	Na+	ppm	0.7	Atomic Absorption Spectrometer
	Cl-	ppm	0.4	Auto Electric Potential Titrator
	pH	/	4.2	PH Meter