Application in rubber without reinforcement of silicone rubber, the strength generally only 03MPa, 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 of ultrafine silica quality, yield point modulus can be increased by 1O times of ultrafine silica manufacturers, elongation, creep performance can be very significant improve l. After the fumed silica filled micro interactions within the material it has undergone great changes, in addition to the presence of molecular chains caused by weak van der Waals forces between entangled macromolecular chains and due to mechanical force caused by mechanical entanglement outside , there is a strong interaction between the fumed silica aggregates of hydrogen bonds between the silica and polymer strong adsorption or bond linking adsorbed polymer Oita silica aggregate surface is stronger than between chains mutual entanglement of ultrafine silica companies such interfacial bonding has been significantly improved, formed inside the silicon rubber polymer macromolecular chains through structural plate carbon black network, giving the material excellent overall performance. 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. Ultrafine silica manufacturers | Weifang Fuyuan (certified) | ultrafine silica provided by the Environmental Protection Technology Co., Ltd. Weifang Fuyuan. Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) Shandong Weifang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. In Weifang Fuyuan leadership with the staff warmly welcome all inquiries negotiations to create Weifang Fuyuan better future.