Key Selling Points
High Purity Assurance: SiO2 content ≥99.6%, heavy metal impurities <50ppm, meeting stringent requirements for electronic materials.
Perfect Sphericity: Laser-detected sphericity ≥97%, significantly reducing system viscosity and improving material flowability.
Precise Particle Size Control: Customizable D50 (1-5μm, graded supply available) with uniform distribution (span <1.2).
Surface Modification: Optional silane coupling agent coating (KH-550/KH-560, etc.).
Low Alpha Radiation: <0.01 counts/cm²·hr, suitable for semiconductor packaging.
Technical Parameters
| Test Item | Standard Value | Test Method |
| Median Particle Size (D50) | Adjustable 1-5μm | Laser Particle Size Analyzer (Malvern) |
| Sphericity | ≥97% | SEM Image Analysis + Roundness Software |
| SiO2 Purity | ≥99.6% | XRF Spectrometer |
| Moisture Content | ≤0.2% | 105°C Oven Drying Method |
| Loss on Ignition | ≤0.5% (800°C×2h) | Muffle Furnace Ignition Method |
| Tap Density | 1.8-2.2 g/cm³ | GB/T 5162-2021 |
| Oil Absorption | 20-28g/100g | GB/T 5211.15-2014 |
Typical Applications
▸ High-end Electronic Packaging: Epoxy molding compounds (EMC), chip underfill materials.
▸ Composite Reinforcement: PCB substrates, 5G antenna wave-transparent materials, thermal conductive silicone.
▸ Precision Ceramics: LTCC/HTCC ceramics, ceramic filters.
▸ Coatings: High-end anti-corrosion coatings, aerospace coatings.
▸ Others: 3D printing powders, dental composite materials.
Process Advantages
Manufactured via high-temperature melt spraying, compared to grinding methods, our product offers:
• Lower surface defects (no angular structures under SEM).
• Higher packing density (≥63% of theoretical value).
• More stable dielectric properties (ε=3.8-4.2 at 10GHz frequency).
Packaging & Storage
• Standard Packaging: 25kg/bag (customizable 5kg/20kg).
• Storage Conditions: Cool, dry place (recommended humidity <40%RH).
• Delivery Lead Time: Standard specifications shipped within 3 working days; third-party testing supported.
Why Choose Us?
• Direct Factory: In-house spherical silica powder production line, monthly capacity of 200 tons.
• Strict QC: Batch-specific test reports + particle size distribution charts provided.
• Technical Support: Free application formulation advice and dispersion solutions.
Inquire Now: Samples available (1kg trial offered).
OEM Service: Customizable particle size distribution and surface treatment.
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.
