Chemical properties and stability. Do not react with water. It is an acidic oxide, not with general acid. Gaseous hydrogen fluoride reacts with silica gaseous silicon tetrafluoride. Alkali with hot or molten alkali reaction of silicate and water chemistry stable. Do not react with water. It is an acidic oxide, not with general acid. Gaseous hydrogen fluoride reacts with silica gaseous silicon tetrafluoride. Alkali with hot or molten alkali silicates and water produced by the reaction. Application in rubber without reinforcement of silicone rubber, the strength generally only 03MPa, silica Which is good sales, almost unusable. To reach the level of practical application, it must be filled with modification. In a typical inorganic powder filler (calcium carbonate, precipitated silica, etc.), the best is fumed silica. After adding fumed silica, which can be increased up to 40 times the strength, modulus, yield point can be increased by 1O times, elongation, creep performance can be very significant improvement l. After the fumed silica filled micro interactions within the material great changes, silica, in addition to the presence of weak intermolecular chain entanglement chain due to van der Waals forces between molecules and due to mechanical force caused mechanical entanglement, but also there is a strong interaction between fumed silica aggregates hydrogen bonds between silica and polymer strong adsorption or bond linking adsorbed polymer silica aggregate surface in Oita strong mutual entanglement chains, making the interface has been significantly improved adhesion, formed within the silicon rubber polymer macromolecular chains through structural plate carbon black network, giving the material excellent overall performance. Which inexpensive silica, silica, Weifang Weifang Fuyuan Fuyuan provided by Environmental Protection Technology Co. Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) strong, credible, Shandong Weifang other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Weifang Fuyuan into the brilliant and you work for a better future!