Surface-Modified for Better Compatibility
Electronic Grade Active Silica Powder is an upgraded product. It starts with Electronic Grade Silica Powder. Then we modify the surface with a silane coupling agent. This chemical treatment changes the powder surface from hydrophilic to organophilic. It significantly improves the interfacial bonding with epoxy and polyimide resins. This does not reduce electrical performance. But it greatly improves the mechanical properties and moisture resistance of the packaging material.
Clear Benefits in Semiconductor Molding
The benefits of Electronic Grade Active Silica Powder are very clear in semiconductor molding compounds. The activated powder is more compatible with epoxy resin. It keeps good wetting and dispersion even at high loading. This gives three direct benefits. First, the flow improves during injection molding. Second, there are fewer voids and defects after curing. Third, the packaged devices are more reliable in hot and humid environments. Our customers report that after using product, their product moisture absorption dropped by 15%-20%. Performance retention after high-temperature, high-humidity aging also improved significantly.
Technical Data for Your Evaluation
|
Parameter |
Typical Value / Range |
Test Standard |
|
Main Content (SiO₂) |
≥ 99.5% |
Chemical Analysis |
|
Surface Treatment |
Silane Coupling Agent |
Infrared Spectroscopy |
|
Activation Degree |
≥ 95% |
Activation Test Method |
|
Conductivity (Water Suspension) |
≤ 10 μS/cm |
Conductivity Meter |
|
Dielectric Constant (1MHz) |
≤ 4.5 |
Dielectric Loss Tester |
|
Particle Size (D50) |
2μm - 10μm (Customizable) |
Laser Diffraction |
|
Maximum Particle Size (D99) |
≤ 30μm |
Laser Diffraction |
|
Moisture Content |
≤ 0.10% |
Oven Drying Method |
Key Applications and Custom Activation
Electronic Grade Active Silica Powder is used in high-end electronic packaging. In semiconductor molding compounds, it serves as the activated main filler. It effectively improves the interfacial bond between the compound and the chip/lead frame. In electronic potting and underfill, its good wettability ensures precise filling of small gaps. In high-performance copper-clad laminates, the surface activity improves interfacial bond strength and mechanical performance. We can customize the coupling agent type and activation level for your resin system. The minimum order is 1 ton.
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