1000 Mesh Active Silica Powder (particle size approx. 10-12 microns) is a special functional filler targeted at cutting-edge technology fields. Its production covers three high-tech steps: ultra-fine grinding, precise classification, and surface modification, imposing extremely strict requirements on production control. The type of coupling agent used can be customized according to the chemical properties of the downstream matrix, such as choosing silanes containing epoxy or amino groups for epoxy systems, while vinyl silanes are more suitable for unsaturated polyester and peroxide-cured rubber systems.
The performance improvement of this grade product is mainly reflected in the following aspects: First, ultimate reinforcement effect. Due to fine particle size, large specific surface area, and strong interfacial bonding force, it can produce nano-effect-like reinforcement efficiency on the matrix material, greatly enhancing the modulus, hardness, creep resistance, and fatigue resistance of the composite material. Second, excellent process adaptability. The activation treatment greatly improves the dispersibility of the ultra-fine powder in high-viscosity resins, reduces system viscosity, and increases the maximum possible filler addition amount, thus providing a wider design window for adjusting the thermal and electrical properties of the material. Third, superior long-term stability. The firm interfacial chemical bonding effectively prevents the penetration of corrosive media such as moisture along the interface, improving the durability of the composite material in harsh environments like damp heat. The primary applications of 1000 Mesh Active Silica Powder include advanced semiconductor packaging materials (e.g., Fan-Out, SiP), chip underfill, high-performance ceramic substrates (e.g., HTCC, LTCC), and lightweight, high-strength composites used in aerospace.
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