In summary, in the field of silicone foam boards, the core role of fumed silica lies in:
Reinforcing the framework: providing the necessary strength foundation for silicone rubber.
Cell Guardian: By constructing a high-viscosity and high-structurally strong rubber compound network, it stabilizes and supports the cell structure during foaming and vulcanization, prevents collapse, and ensures the formation of uniform and fine closed-cell foam.
This is the decisive factor for the production of qualified and high-performance silicone foam boards. Performance foundation: Endow foam boards with excellent mechanical properties (strength, elasticity), compression set performance, temperature resistance, aging resistance, etc.