1. When the silica gel of precipitation method is elongated, it will turn white, and it can not be pulled very long, while the gas phase silica gel is different. How to pull the gas phase will not turn white, and it can be pulled relatively long. Good gas phase glue can be pulled to more than 700%.
2. The tear strength, tear strength and elongation of the gas phase silica gel are better than that of the precipitation silica gel.
3. The vapor phase silica gel has a transparent appearance. Precipitation silica gel appearance is opaque or translucent.
4. The cost of silicone rubber produced by the gas phase method is higher than that by the precipitation method. Therefore, the tensile and tear elongation of the gas phase adhesive with the same hardness is better than that of the precipitation adhesive, and its environmental protection index is also higher.
5, the gas phase production is the use of silicon tetrachloride and air combustion obtained silicon dioxide, fineness
Over 1000 mesh, precipitation process is the use of sodium silicate adding sulfuric acid to precipitate silica out. Fineness is only 300-400 mesh.
 
6. The white carbon black produced by gas phase method is expensive and not easy to absorb moisture. Used in paint as a matte. Precipitation white carbon black is cheap and easy to absorb moisture. It can only be used for filling and reinforcing rubber and plastic products.


Gas phase silica gel characteristics:
1, high and low temperature impact resistance
2, fast vulcanization
3, very low smell; The material released during vulcanization is harmless to human body
4, with a variety of substrates bonding without the use of primer
5. Excellent heat resistance, ozone resistance and chemical corrosion resistance
6, excellent electrical insulation performance
7. Single component system is simple and convenient to use