As we all know, silica gel is divided into two categories, silicone and inorganic silicon:
Inorganic silica gel is a highly active adsorbent material, which has many characteristics that are difficult to replace with other similar materials: high adsorption performance, good thermal stability, stable chemical properties, high mechanical strength, etc., household use as desiccant, humidity adjustment Agent, deodorant, etc.; industrial use as oil hydrocarbon decolorizer, catalyst carrier, pressure swing adsorbent, etc.; separation chemical purification agent for fine chemicals, beer stabilizer, paint thickener, toothpaste friction agent, matting agent, etc.
Organosilicone is an organosilicon compound, which refers to a compound containing Si-C bonds and at least one organic group directly connected to a silicon atom. It is customary to use organic groups and silicon through oxygen, sulfur, nitrogen, etc. Atom-linked compounds are also considered as organosilicon compounds. Among them, polysiloxanes composed of silicon-oxygen bonds (-Si-O-Si-) are the most widely studied and most widely used organosilicon compounds, accounting for more than 90% of the total dosage. .
The production process of silica gel can be divided into extrusion and molding:
Extrusion of silica gel is more common, such as the sealing ring on a rice cooker for household use, which is called a rice cooker silicone seal ring.
Molded silicone is more complicated and irregular in shape, including silicone bowls, silicone ice trays, silicone cake molds, and so on.
Silicone rubber is a synthetic elastomer made from a filler-reinforced crosslinked silicon-based polymer. It achieves a combination of chemical and mechanical properties unmatched by organic elastomers.
What are the advantages of this kind of material?
First: It has a longer service life in harsh environments and is not affected by the weather for a long time - rain, snow, humidity, ozone, solar ultraviolet (UV); after long-term exposure of organic elastomers to the environment It may become brittle.
Second: When exposed to harsh environmental stresses (heat, cold, humidity, oil, ozone, ultraviolet light), the inherent good electrical insulation quality does not change significantly.
Third: It maintains its natural flexibility and elasticity (anti-compression deformation) over a wide temperature range, improving the comfort and feel of consumer products.
Fourth: good sealing performance.
Fifth: Safe and environmentally friendly, widely used in food processing tools, baby products, etc.
Sixth: More choices - a wider range of hardness (from Shore A10 to 80), a wider range of color choices (from transparent to bright colors).
Seventh: a wider range of operating temperatures - from -100oC to 316oC (-148 to 600oF); organic elastomers undergo softening and irreversible deformation at temperatures above 100oC (212oF) at temperatures below 25oC (-13oF) ) will become brittle.
Eighth: Better liquidity – easy to manufacture and increase productivity. Silicone products are now widely used in people's lives.
China's silicon rubber industry has unlimited potential for development. The upstream and downstream industry linkage effect of the silicone rubber industry has begun to appear gradually. The development is very rapid. According to statistics, if the proportion of silicone rubber in China's rubber consumption will increase from the current 6.5% to 2020. 33%, then the overall domestic self-sufficiency rate of China's rubber can be increased from about 50% to more than 80%. It can be said that the market potential is unlimited.