1、 Production process

The white carbon black produced by gas-phase method is expensive and not easily hygroscopic. Used as a dull agent in coatings. Precipitation method white carbon black is inexpensive and easy to absorb moisture. Can only be used for filling and reinforcing rubber and plastic products.

When the liquid silicone gel of the precipitation method is stretched, it will turn white and cannot be stretched for a long time, while in the gas phase, it is different. No matter how the gas phase is pulled, it will not turn white and can be stretched for a longer time without breaking. A good gas-phase adhesive can be pulled up to over 700%, and the transparency of gas-phase adhesive is higher than that of precipitated adhesive.
The cost of silicone rubber produced by gas-phase method is higher than that produced by precipitation method, so the tensile and tear elongation of gas-phase adhesive with the same hardness is better than that of precipitation adhesive, and its environmental protection index is also higher. Gas phase silica gel is generally addition molded 10:1 transparent silica gel, while precipitation silica gel is generally addition molded 1:1 semi transparent silica gel.

Gas phase silicone has good tear resistance and is suitable for products inside sleeves, pressure cookers, silicone wires, and so on; The precipitation method of silicone has a good impact life and is suitable for remote control buttons, mobile phone buttons, foot mats, etc.