What Are The Characteristics of Gas Phase Extrusion of Silica Gel?

- Aug 12, 2019-

August,12th,2019


The fumed silica gel is a kind of high-low temperature resistant impact, the release of the vulcanization process is harmless to the human body, and it is bonded to various substrates without using a primer, and has excellent heat resistance, ozone resistance and chemical resistance. Silicone, many people do not know what advantages of gas phase extrusion of silica gel, let's learn together.


(The picture shows the gas phase extrusion of silica gel)

Introduction of gas phase extrusion of silica gel:

1. Extrusion type silica gel is specially developed for extrusion. The transparency of raw materials is good. The surface of extruded products is smooth, dry and not sticky.

2. Extrusion type silica gel can be processed after adding double bis-four-vulcanizing agent, suitable for extrusion molding.


(The picture shows the gas phase extrusion of silica gel)

Characteristics of gas phase extrusion of silica gel:

1. The general precipitation method will be white when the silica gel is elongated, and it cannot be pulled very long. The gas phase method of silica gel is not the same, the gas phase method of silica gel will not be whitish, and can be pulled longer than the break. Good gas phase glue can be pulled to more than 700%.

2. The gas phase method silica gel has a transparent appearance. The precipitated silica gel is opaque or translucent in appearance.

3, gas phase method silicone tear strength, tear strength, elongation rate are better than the precipitation method silica gel.

4. The white carbon black produced by the gas phase method white carbon black is expensive and is not easy to absorb moisture. Use as a matting agent in paints. Precipitated silica is cheap and easy to absorb moisture. Can only be used in rubber, plastic products to fill and strengthen.

5. The gas phase method silica gel has higher cost than the precipitation method silica gel production, so the same hardness of the gas phase rubber tensile tear strength, elongation and other characteristics are better than the precipitated rubber, and its environmental protection index is also higher.

6. Gas phase production is silica obtained by burning silicon tetrachloride and air, and the fineness is more than 1000 mesh. The precipitation method is to precipitate silica by adding sulfuric acid into sodium silicate. The fineness is only 300-400 mesh.