Spherical Silica Powder, High Purity

• 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

product information:

 

Product Overview

This product is high-purity spherical silica powder produced using advanced flame fusion technology. It features a purity of ≥99.6%, sphericity ≥97%, and controllable particle size distribution (D50 customizable from 0.5μm to 50μm). It is widely used in high-end electronic packaging, semiconductor encapsulation, 5G communication materials, specialty ceramics, coatings, and other fields, enhancing the performance and reliability of composite materials.

Key Parameters

Indicator	Value	Testing Standard
SiO2 Purity	≥99.6%	GB/T 20020-2013
Sphericity	≥97%	ISO 9276-1:1998
Median Particle Size (D50)	0.5μm-50μm (customizable)	ISO 13320:2009
Density	2.2-2.4 g/cm³	GB/T 5162-2021
Specific Surface Area	1-30 m²/g (adjustable by size)	BET Method
Moisture Content	≤0.1%	GB/T 6284-2016
Loss on Ignition	≤0.5%	GB/T 6284-2016

Product Advantages

 High Purity Assurance: ≥99.6% SiO₂ content, low metal ion impurities (Na⁺, K⁺ ≤5ppm), meeting semiconductor-grade material requirements.
 Perfect Spherical Structure: Sphericity ≥97%, excellent flowability, significantly reducing internal stress in composite materials and improving filling rate.
 Precise Particle Size Control: Strictly graded by laser particle size analyzer, customizable in the range of 0.5μm-50μm to suit various application scenarios.
 Outstanding Stability: Low hygroscopicity, high thermal stability (melting point ≥1600°C), and resistance to acid/alkali corrosion, suitable for harsh environments.

Typical Applications

 Electronic Packaging: Chip encapsulants, EMC epoxy molding compounds, reducing thermal expansion coefficient.
 5G Substrate Materials: Fillers for high-frequency PCBs, improving dielectric properties and signal transmission.
 Specialty Coatings: High-end anti-corrosion/wear-resistant coatings, enhancing hardness and leveling.
 Precision Ceramics: Sintering aids for LTCC/HTCC ceramics, increasing densification.

Quality Control & Certifications

▸ Full-process ISO 9001 quality management system
▸ Inspection report provided for each batch
▸ Supports customized production and verification of client-specified indicators

Packaging & Shipping

 Standard Packaging: 25kg/bag (moisture-proof composite packaging), or customized upon request
 Shipping: Moisture-proof and shockproof handling, global logistics support

Why Choose Us?

• Years of R&D experience in silica powder, serving 300+ global clients
• In-house spherical powder production line with a stable monthly capacity of 200 tons
• 1-on-1 technical support, providing material selection and formulation optimization

Request a Quote Now! Online inquiries welcome, OEM/ODM cooperation supported!

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