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Silicone/Rubber Parts Good Thermal Stability
Wishsino International Group Limited | Updated: Sep 21, 2017

Silicone/Rubber Parts Good thermal stability

The chemical composition and physical structure of silica gel, it determines that it has many other similar materials difficult to replace the characteristics of high adsorption performance, good thermal stability, chemical stability, a higher mechanical strength. Silica gel according to the size of its pore size is divided into: macroporous silica gel, coarse silica gel, B type silicone, fine silica gel. Silica gel is a highly active adsorbent material, which is an amorphous substance with the chemical formula mSiO2 · nH2O. Insoluble in water and any solvent, non-toxic and tasteless, stable chemical properties, in addition to alkali, hydrofluoric acid does not react with any substance. Various types of silica gel because of its different manufacturing methods to form a different microporous structure.

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First, the safety performance

Silica is the main component of silica, chemical stability, not burning. Silicone is a kind of amorphous silica, should control the workshop dust content is not more than 10 mg / cubic meter, need to strengthen the exhaust, wear mask when operating.

Silicone has a strong ability to absorb, the human skin can produce a dry effect, therefore, the operation should wear a uniform. If the silicone into the eyes, need a lot of water rinse, and as soon as possible to find a doctor.

Blue silica gel contains a small amount of cobalt chloride, toxic, should be avoided and food contact and suction mouth, such as the occurrence of poisoning should immediately seek medical treatment.

Silica gel in the course of the use of the media due to adsorption of water vapor or other organic matter, adsorption capacity decreased, can be reused after regeneration.

Second, the silica gel adsorption of water after the regeneration

Silica adsorption of water, can be removed by thermal desorption method of water, a variety of ways to heat, such as electric furnace, flue heat and hot air drying.

Desorption heating temperature control in the 120-180 ℃ is appropriate for the blue plastic indicator, discoloration silica gel, DL-type blue silica gel is controlled at 100 - 120 ℃ is appropriate. The maximum temperature of various industrial silica gel regeneration should not exceed the following limits:

Coarse silica gel shall not be higher than 600 ℃;

Fine silica gel shall not be higher than 200 ℃;