Flexible Composite Silica Powder for Epoxy Resin Systems

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Model NO.: SR/SK
• Mohs Hardness: 5
• Exterior: White Powder
• D50: 0.5μm-10μm
• D100: Can Be as Low as Below 8μm
• Pyroconductivity: 0.8W/K.M
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: SiO2
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 2811229000
• Production Capacity: 50000pieces/Year

Product Description

product information:

Product Description

 

Specially engineered for epoxy resin formulations, our flexible composite silica powder features low stress, high filling capacity, and excellent dispersibility. It significantly enhances the mechanical properties, thermal stability, and processing fluidity of epoxy resins. Ideal for electronic encapsulation, adhesives, and composite materials, it effectively reduces curing shrinkage while improving product reliability.

 

Product Specifications

 

Parameter	Value
Particle Size (D50)	0.5-10μm (customizable)
Purity (SiO2)	≥60%
Surface Treatment	Silane coupling agent (optional)
Moisture Content	≤0.2%

Item	Unit	Typical Values
Exterior	/	white powder
Density	kg/m³	2.58 ×10^3
Moh's hardness	/	5
Coefficient of linear expansion	1/k	0.8×10^-6
Pyroconductivity	w/k.m	0.8
Refraction coefficient	/	/

 

Key Advantages

 Low-Stress Design: Optimized surface treatment minimizes internal curing stress, preventing cracking
 High Loading Capacity: High packing density enables >70% filler content without compromising flowability
 Enhanced Toughness: Unique flexible structure improves epoxy's impact resistance
 Processing-Friendly: Pre-dispersed treatment reduces agglomeration for easier mixing
 Excellent Thermal Resistance: Stable performance at temperatures ≥300°C, suitable for high-temperature curing systems

Typical Applications

 Electronic Encapsulation: IC packaging, LED potting, power module encapsulation
 Adhesives: Thermally conductive structural adhesives, conductive pastes, UV-curable resins
 Composite Materials: PCB substrates, insulating materials, 3D printing resins
 Coatings: Wear-resistant floor paints, electronic protective coatings

Why Choose Us?

 Customization Service: Adjustable particle size and surface treatments (silane coupling agents, etc.)
 Strict Quality Control: ISO 9001 certified with excellent batch-to-batch consistency
 Technical Support: Formula optimization guidance and resin compatibility solutions

Packaging & Storage
 

• Packaging: 25kg/bag (customizable options available)

• Storage: Keep in cool, dry conditions (recommended humidity ≤60%)

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