Silicone rubber is a kind of polymer elastomer based on siloxane, which has been widely used in many fields because of its excellent properties. According to different classification standards, silicone rubber can be divided into many types.
First, according to the vulcanization method classification
1. Hot vulcanized silicone rubber: This silicone rubber is vulcanized at high temperatures to form a polymer network structure. It has high strength and temperature resistance, and is suitable for occasions requiring greater pressure and temperature changes.
2. Room temperature vulcanized silicone rubber: This silicone rubber is vulcanized at room temperature and forms a polymer network structure through the action of crosslinking agents. It has good elasticity and weather resistance, and is suitable for sealed and waterproof occasions.
2. Classification according to use
1. Industrial grade silicone rubber: This silicone rubber is mainly used in the manufacture of various industrial products, such as seals, insulation materials, shock absorbing materials and so on. It has excellent high temperature resistance, oxidation resistance, weather resistance, and can maintain stable performance under harsh environmental conditions.
2. Medical grade silicone rubber: This silicone rubber is mainly used in the manufacture of medical devices and bioengineering products, such as artificial organs, medical dressings and so on. It has good biocompatibility and non-toxicity, and can be compatible with human tissues without adverse reactions.
3. Food grade silicone rubber: This silicone rubber is mainly used for the manufacture of food contact materials, such as tableware, kitchenware and so on. It has good high temperature resistance and oil resistance, and can meet the requirements of food processing and storage.
Three, according to the siloxane chain segment classification
1. Methylsilicone rubber: methylsilicone rubber is a common type of silicone rubber, and its siloxane chain segments are connected in methyl units. It has good elasticity and temperature resistance, and is suitable for occasions that need to withstand certain pressure and temperature changes.
2. Phenyl silicone rubber: the siloxane chain segment of phenyl silicone rubber is connected by phenyl group. It has good oil and chemical resistance, suitable for occasions that need to resist oil and chemicals.
3. Fluorosilicone rubber: fluorine atoms are introduced into the siloxane chain segment of fluorosilicone rubber to make it have better oil resistance, chemical resistance and aging resistance. It is suitable for applications that require prolonged exposure to harsh environments.
Iv. Summary
According to different classification standards, silicone rubber can be divided into many types. Different types of silicone rubber have different performance characteristics and application ranges. Understanding the performance characteristics and application range of different types of silicone rubber helps to correctly select and use products to ensure the use effect and safety.
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