Specific Application of Fumed Silica
2016/12/15
Fumed
silica is a white powder X-ray amorphous silicic acid and silicate
products in general, mainly refers to the precipitated silica, fumed
silica, ultrafine silica gel and aerogels, including Powdered synthetic aluminum silicate and calcium silicate. Fumed
silica is an important reinforcing material in the rubber industry. It
is called fumed silica because its microstructure and aggregate
morphology are similar to carbon black and have similar reinforcing
properties in rubber. According
to their production methods can be divided into two categories, namely
precipitation method fumed silica and fumed silica. Precipitation method Fumed silica is used as a rubber reinforcing
material, mainly used in tires, shoes, and other light colored rubber
products.
Fumed silica (fumed silica) is a very important high-tech ultra-fine inorganic one of the new materials, because of its small particle size, the large surface area, surface adsorption, surface energy, high chemical purity, Dispersion, good performance, thermal resistance, resistance and other aspects of specific performance. With its excellent stability, reinforcement, thickening and thixotropy, in many disciplines and fields within the unique characteristics, has an irreplaceable role. Nano-silica commonly known as "ultra-fine fumed silica", widely used in various industries as additives, catalyst carrier, petrochemical, bleaching agent, matting agent, rubber reinforcing agent, plastic filler, ink thickener, metal Soft polish, insulation insulation filler, high-grade daily cosmetics fill and spray materials, medicine, environmental protection and other fields. And for the development of related industries to provide a new material basis and technical assurance.
The size of the reinforcing effect of fumed silica depends mainly on its specific surface area, and the strength index of rubber products increases, but the elasticity decreases, the tear strength decreases, and the abrasion resistance , Mixing difficult to disperse, heat, high Mooney viscosity, easy to scorch, therefore, different formulations, different uses, the specific surface area is not the same, the specific surface area of vulcanized rubber physical and mechanical properties of the impact is not always the same .
Fumed silica (fumed silica) is a very important high-tech ultra-fine inorganic one of the new materials, because of its small particle size, the large surface area, surface adsorption, surface energy, high chemical purity, Dispersion, good performance, thermal resistance, resistance and other aspects of specific performance. With its excellent stability, reinforcement, thickening and thixotropy, in many disciplines and fields within the unique characteristics, has an irreplaceable role. Nano-silica commonly known as "ultra-fine fumed silica", widely used in various industries as additives, catalyst carrier, petrochemical, bleaching agent, matting agent, rubber reinforcing agent, plastic filler, ink thickener, metal Soft polish, insulation insulation filler, high-grade daily cosmetics fill and spray materials, medicine, environmental protection and other fields. And for the development of related industries to provide a new material basis and technical assurance.
The size of the reinforcing effect of fumed silica depends mainly on its specific surface area, and the strength index of rubber products increases, but the elasticity decreases, the tear strength decreases, and the abrasion resistance , Mixing difficult to disperse, heat, high Mooney viscosity, easy to scorch, therefore, different formulations, different uses, the specific surface area is not the same, the specific surface area of vulcanized rubber physical and mechanical properties of the impact is not always the same .
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