High-Purity Industrial-Grade Crystalline Silica Micro Powder

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Model NO.: SG
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: SiO2>99%
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 2811229000
• Production Capacity: 50000pieces/Year

Product Description

product information:
 

Product Overview
High-purity industrial-grade crystalline silica micro-powder is a functional powder material characterized by ultra-high purity and fine particle size. It is refined from high-purity quartz sand through specialized processes, offering exceptional chemical stability, high melting point, low thermal expansion coefficient, and superior electrical insulation properties. Widely used in electronic encapsulation, precision casting, high-end coatings, composite materials, and refractory applications.

Product Features

• High Purity: SiO2 content ≥90% with extremely low impurities

• Ultra-Fine Particle Size: D50 adjustable between 0.5-30μm, customizable grading available

• Excellent Thermal Stability: Withstands temperatures exceeding 1600°C with low thermal expansion

• High Insulation: Volume resistivity >10¹4 Ω·cm, ideal for electronic-grade applications

• Chemical Inertness: Resistant to acid/alkali corrosion and oxidation

Typical Applications
Electronic Encapsulation: Filler for epoxy/silicone molding compounds to enhance performance
 Precision Casting: Improves surface finish of castings and reduces metal penetration
 High-End Coatings: Boosts wear resistance, weather resistance, and UV protection
 Composite Materials: Reinforcement modifier for ceramics, plastics, and rubber
Refractories: Enhances thermal shock resistance and mechanical strength of refractory products

Basic Parameters
 

Item	Unit	Typical Values
Exterior	/	white powder
Density	kg/m³	2.65 ×10^3
Moh's hardness	/	7
Coefficient of linear expansion	1/k	14×10^-6
Pyroconductivity	w/k.m	12.6
Refraction coefficient	/	1.54

 
 

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