High-Purity Spherical Silica Powder (99.6%, D50: 0.5– 50μ m, Sphericity ≥ 97%)

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Model NO.: SQ
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: SiO2>99.6%
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 2811229000
• Production Capacity: 50000pieces/Year

Product Description

1. Product Overview
   
   This product is manufactured using advanced flame fusion technology, achieving ultra-high purity (SiO₂ ≥99.6%) and near-perfect spherical structure (sphericity ≥97%) through stringent process control. With precisely controlled particle size distribution (D50 0.5-50μm), it exhibits excellent fluidity, low thermal expansion coefficient, and high insulation performance, making it a critical functional filler for high-end composite materials.

2. Key Parameters

Parameter	Specification
Purity	≥99.6% SiO2
Particle Size (D50)	0.5μm-50μm (customizable)
Sphericity	≥97%
Whiteness	≥92%
Density	2.65 g/cm³
Mohs Hardness	7

1. 
   Core Advantages

• 
  High Filling, Low Viscosity: Spherical structure reduces friction, increases resin/plastic filling rate (up to 80%+), and lowers system viscosity.

• Enhanced Mechanical Properties: Improves hardness, wear resistance, and impact strength of composite materials.

• Exceptional Stability: Low thermal expansion coefficient (0.5×10^-6/K), resistance to acid/alkali corrosion, suitable for extreme environments.

• Optimized Electrical Performance: High insulation (volume resistivity >10¹⁶ Ω·cm), widely used in electronic encapsulation.

1. 
   Typical Applications
    
   Electronic Materials: IC chip encapsulants, EMC epoxy molding compounds, CCL (copper-clad laminate) fillers.
    High-Performance Coatings: Enhances wear resistance, weather resistance, and surface gloss.
    Specialty Ceramics: Sintering aids for precision ceramics, improving densification and deformation control.
    Adhesives & Sealants: Optimizes rheology and enhances mechanical strength.
    5G High-Frequency Substrates: Reduces dielectric loss, meeting high-frequency signal transmission requirements.

2. 
   Quality Control

• 
  Full compliance with ISO 9001 quality management system.

• Laser particle size analyzer (Malvern) for precise measurement.

• Each batch comes with a Certificate of Analysis (COA) to ensure parameter compliance.

Packaging & Delivery

 Standard Packaging: 25kg/bag (moisture-proof composite bag).
 Custom Services: Particle size grading, surface modification (silane coupling agent treatment).
 Minimum Order Quantity: 1 ton (samples available).
 Delivery Time: 15-30 days (depending on order volume).

Why Choose Us?

 Direct Manufacturer: In-house spherical silica powder production line with stable capacity.
 Technical Support: Free application formula recommendations and performance test data.

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