High Purity Fused Silica Powder

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Model NO.: SF
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: SiO2>99.9%
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 32074000
• Production Capacity: 50000pieces/Year

Product Description

Product Overview

This product is manufactured through high-temperature melting, ultra-fine grinding, and precise classification of high-purity quartz sand. With a purity of ≥99%, low thermal expansion coefficient, excellent insulation, and chemical stability, it is specifically designed for high-end applications in electronics, semiconductors, photovoltaic industries, and other fields, meeting stringent requirements for particle size distribution and purity in precision materials.

Core Advantages

 Ultra-High Purity: SiO₂ content ≥99%, heavy metal impurities <10ppm, compliant with electronic-grade material standards
 Precise Particle Size Control: Customizable D50 range of 0.5μm-50μm, supporting narrow distribution grading (D90/D10 ratio ≤3 available)
 Stable Performance: α-ray emission ≤0.01 cph/cm², dielectric constant 3.8@1MHz, volume resistivity >10¹⁶ Ω·cm
 Process Adaptability: Spherical/angular shapes available, excellent flowability, suitable for spraying, potting, 3D printing, and other processes

Technical Parameters
 

Item	Specification
Purity (SiO2)	≥99%
Median Particle Size (D50)	0.5μm-50μm (customizable)
Particle Size Distribution	D90/D10 ≤3 (standard grade)
Moisture	≤0.1%
Loss on Ignition	≤0.3% (1000°C)
Morphology	Angular
Specific Surface Area	2-30 m²/g (adjustable based on particle size)

Typical Applications

 Semiconductor Packaging: Epoxy resin filler, chip bonding material
 Electronic Ceramics: LTCC/HTCC substrates, ceramic capacitors
 Photovoltaic Industry: Silicon wafer cutting fluid, anti-reflective coatings
 5G Materials: High-frequency circuit board fillers, microwave dielectric ceramics
 Precision Coatings: Aerospace thermal barrier coatings, optical device polishing

Quality Control

Certified under ISO 9001/14001 systems.
Each batch comes with an inspection report.

Service Support

Customization available (purity/particle size/morphology)
Technical solutions and sample testing provided
Moisture-proof packaging in containers (25kg/bag or as requested)

Contact Us: For the latest technical documentation and quotes, feel free to inquire!

 

Company Information:

Jiangsu Shengtian New Materials Co., Ltd. has a technical research and development team focusing on ultra-fine powder materials, and has strong strength in the research and development and production of ultra-fine functional materials, composite materials and related applications, and has become a more influential high-tech enterprise in the ultra-fine functional powder industry.
The company's products include crystalline silicon powder, molten silicon powder, soft composite silicon powder, spherical silicon powder, aluminum oxide powder, ceramic powder, glass powder and other ten categories, nearly 100 kinds of different specifications of products, and has a strong modification, compounding and other follow-up deep processing technology and capabilities. The products are processed by special technology, the production technology is leading and innovative, and the introduction of international technical standards for similar products, widely used in electronic packaging, copper clad plate, ink coating, adhesive, ceramics, precision casting, glass fiber, plastic rubber and other industries, giving its functionality while helping customers reduce costs. And provide the overall application of technology solutions.
The company has more than 20 different types of production lines, more than 100 sets of domestic advanced equipment, with an annual output of 50,000 tons. The company adopts professional production and testing equipment and formulates strict production quality control system to conduct all-round control of product quality. All products of the company have passed SGS environmental protection testing, in line with the EU ROHS green environmental protection standards. The company took the lead in the silicon powder industry through the ISO9001 quality management system certification and ISO14001 environmental management system certification, has passed the high-tech product identification. The company's products and solutions have been applied to more than 160 enterprises around the world, including more than 80 customers with stable cooperation for more than 10 years.

Workshop:
 

An excellent manufacturing enterprise

The company has 20 patents, the company has passed ISO9001 and ISO14001 certification, and has been recognized as a national high-tech enterprise