Hydrophilic 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%
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 32074000
• Production Capacity: 50000pieces/Year

Product Description

Product Overview

This product is manufactured through high-temperature fusion of high-purity quartz sand, followed by ultra-fine grinding and surface hydrophilic modification. It features a purity of ≥99%, controllable particle size distribution (D50 0.5μm-50μm, customizable), high surface activity, and excellent dispersibility. It is widely used in electronic packaging, coatings, adhesives, ceramics, composite materials, and other fields.

Core Advantages

Ultra-high purity: SiO₂ content ≥99%, extremely low impurity levels, ensuring product stability and reliability
Precise particle size control: D50 range 0.5μm-50μm (customizable), meeting diverse application requirements
Excellent hydrophilicity: Surface-modified for superior compatibility with water/polar solvents, ensuring uniform dispersion without agglomeration
Stable performance: Low thermal expansion coefficient, high-temperature resistance, strong insulation, suitable for demanding process environments

Technical Parameters

Parameter	Value/Description
Purity (SiO2 content)	≥99%
Particle size distribution (D50)	0.5μm-50μm (customizable)
Appearance	White ultra-fine powder
Density	2.2 g/cm³
Mohs hardness	6-7
Thermal expansion coefficient	0.5×10-6/ºC (20-300ºC)
Dielectric constant (1MHz)	3.8-4.2
Surface properties	Hydrophilic modification (contact angle <15°)

Application Fields

Electronic materials: IC packaging, epoxy resin filler, semiconductor sealants
Coatings & inks: Enhances wear resistance, weather resistance, and improves leveling performance
Adhesives: Boosts thermal/electrical insulation properties, reduces thermal stress
Ceramic manufacturing: Precision ceramic sintering aid, lowers forming temperature
Composite materials: Reinforces polymer materials, improves mechanical strength

Packaging & Storage

Packaging: 25kg/bag, or as per customer requirements
Storage: Keep in a cool, dry place; avoid moisture absorption; shelf life of 12 months

Why Choose Us?

• Source manufacturer: In-house fused quartz production line, quality-controlled, OEM customization supported

• Technical assurance: Equipped with laser particle size analyzers, ICP, and other testing devices to ensure batch consistency

• Rapid response: Technical solution support with professional answers within 24 hours

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