The use of fumed silicon dioxide can be divided into silicone materials and other areas, of which the amount of organic silicon materials accounted for nearly 60% of the total amount of fumed silicon dioxide, silicone rubber is the most used in organic silicon materials, the amount of its addition can be as high as more than 50%. Fumed silica mainly plays a reinforcing role in HVT silicone rubber, because the molecular chain of silicone rubber is very flexible, the interaction between the chains is weak, so the strength of the unreinforced silicone rubber is very low (not more than 0.4MPa), no use value, must be applied after reinforcement, and after fumed silica reinforced silicone rubber, its strength can be increased by up to 40 times.

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