Can silica adjust the hardness of rubber?

Light-coloured products commonly used silica reinforcement and adjust the hardness, can achieve to improve the tensile strength of the products, tear resistance, increase the adhesion with metal or textile purposes, while adding diethylene glycol as an active agent has a waterproof effect, and can stabilise the hardness of high-hardness rubber material. Due to move into a large number of silica to make the high cost of rubber, so often silica and Lide powder, clay and so on and use, in order to balance the performance and cost.