There are two kinds of silica gel: one is precipitation silica gel; One is gas phase silica gel. Next xiaofian will take you to understand, gas phase silica gel resistance to high and low temperature impact, vulcanization process release harmless to human body, and a variety of substrates bonding without the use of primer, has excellent heat resistance, ozone resistance and chemical erosion resistance. Gas phase silica gel has excellent electrical insulation performance. What is the difference between precipitated silica gel and gas phase silicone rubber?   

The difference between gas phase silicone rubber products and precipitation silicone rubber products:

1, the silicone rubber products of the precipitation method will be white when stretched, and the stretching rate is not good, and the silica gel products of the gas phase method are not the same, the stretching will not be white, and the elongation at break can reach the highest rate of more than 700%.
2. The raw material cost of gas phase silicone rubber products is higher than that of precipitation silica gel products. The tensile strength, tear strength and elongation at break of gas phase silica rubber products are better than that of precipitation silica rubber products under the same hardness, and their environmental protection index is also higher.
3, gas phase silica gel products transparent appearance. The appearance of precipitated silica gel products is not transparent or translucent.
4, gas phase method is the use of silicon tetrachloride and air combustion of silicon dioxide production, fineness of more than 1000 mesh, precipitation method is the use of sodium silicate added sulfuric acid precipitation out of silicon dioxide production. Fineness is only 300-400 mesh.
5. The gas phase silica contained in the gas phase silicone rubber is expensive and not easy to absorb moisture. It is mainly reinforcing effect in rubber. Silica in the precipitation method is cheap and easy to absorb moisture. In rubber, it is mainly filled.