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A specialty rubber, silicone is limited in use by its cost; but its exclusive ability to retain its physical properties at extreme temperatures, from -74 C (-101 F) to 315 C (599 F), makes up for its high cost. It is the first "inorganic" rubber; the polymer has a backbone of silicon and oxygen instead of the conventional carbon chain.
Although the raw material silica is cheap and plentiful, the manufacturing process is difficult and expensive. A range of products is available, their properties largely influenced by the molecular structure of the silicone. Its retention of electrical properties, resistance to oxygen and ozone, and inertness at extremely high temperatures recommend uses in aircraft and outer space equipment, and in the automobile field. Its inertness and nontoxicity encourage use for food and surgical applications. http://www.uv.es/EBRIT/macro/macro_5007_25_7.html |
Cao su tổng hợp Silicone.
