1、Methyl silicone rubber
Dimethyl silicone rubber is put into commercial production of the earliest kind of silicone rubber, can be in the range of -60 ~ 200 ℃ to maintain good elasticity, aging resistance is good, there are excellent electrical insulation properties as well as moisture-proof, shock-proof and physiological inertia and other characteristics.
Dimethyl silicone rubber is mainly used for strong coating, can also be made into a variety of extruded and calendered products for electromechanical, aviation, automotive and medical industries. However, due to the low vulcanization activity of dimethyl silicone rubber, used in the manufacture of thick products, vulcanization difficulties, the inner layer is easy to bubble and high-temperature compression of permanent deformation, so it has been replaced by methyl vinyl silicone rubber.
2, methyl vinyl silicone rubber
Due to the introduction of a small amount of vinyl silicone rubber macromolecular structure can greatly improve the vulcanization of silicone rubber processing performance, so in the current application of silicone rubber, most contain vinyl. Methyl vinyl silicone rubber is the most common type of silicone rubber, currently dominates the production of silicone rubber at home and abroad. In addition to its general characteristics of dimethyl silicone rubber, but also has a wide range of operating temperatures, can be in a range of 60 ~ 260 ℃ to maintain good elasticity, it is easier than dimethyl silicone rubber vulcanization, with smaller compression permanent deformation, better resistance to solvent expansion and resistance to high pressure steam stability as well as excellent cold resistance, etc., and because of the use of less reactive peroxide for vulcanization, thus reducing the number of Vulcanization of air bubbles and rubber stability weaknesses.
3、Methyl phenyl vinyl silicone rubber
Methyl phenyl vinyl silicone rubber is the introduction of methyl vinyl silicone rubber in the molecular chain of methyl phenyl silicone oxygen chain or diphenyl silicone oxygen chain and get the product.
The introduction of phenyl in the side groups of polysiloxane, due to the destruction of the regularity of the structure of dimethylsiloxane, greatly reducing the crystallization temperature of the polymer, expanding the low-temperature application of the polymer material. Therefore, methyl phenyl vinyl silicone rubber in addition to all the compression permanent deformation of methyl vinyl silicone rubber, a wide range of operating temperatures, oxidation resistance, weather resistance, shockproof, moisture and good electrical insulation properties, but also has excellent low temperature resistance, ablation resistance and resistance to irradiation and other properties.
4, fluorosilicone rubber
Fluorosilicone rubber refers to γ-trifluoropropyl methyl polysiloxane. Fluorosilicone rubber has excellent resistance to chemicals, solvents and lubricants, such silicone rubber in non-polar solvents in the expansion rate is small, cold resistance and thermal stability is good, resistance to ignition or good, so in aircraft, rockets, missiles, cosmic flight, petrochemicals, used as fuel oil and lubricating oil contact hose, gaskets, seals, fuel tanks, such as the village, but also used to manufacture corrosion-resistant clothes, gloves and coatings, adhesives, etc.. It can also be used in the manufacture of corrosion-resistant clothes, gloves and paints, adhesives and so on.
5、Nitrile silicon silicone rubber
As the polymer molecular side chain contains β-carbonitrile ethyl or γ-carbonitrile propyl strong polar groups, greatly increasing the intermolecular chain force, improve the oil resistance, solvent resistance. At the same time, due to the introduction of a certain amount of nitrile alkyl, destroying the regularity of the polymer structure, but also greatly improve the cold resistance.
The main advantage of nitrile silicone rubber is excellent resistance to oil and bath agent, can be in the range of -60 ~ 180 ℃ to maintain the elasticity, so it can be made into oil-resistant rubber products used in the aviation industry, automotive industry and petroleum industry; can also be used as a high-performance aircraft environmental sealant and fuel tank sealant, in the range of -54 ℃ to more than 200 ℃ to maintain the seal. Nitrile silicone rubber can be processed with common equipment.
6, benzene-supported silicone rubber
Styrene-supported silicone rubber is mainly characterized by excellent radiation resistance, its radiation resistance for the general methyl vinyl silicone rubber 10 to 15 times, 5 to 10 times as high as phenyl silicone rubber, so it can be used in the aerospace industry, the atomic energy industry and nuclear reactors, etc., as the high-energy radiation-resistant cables, sheaths, gaskets, as well as heat-shrinkable tubes.
7, ethyl silicone rubber
The introduction of ethyl in the polysiloxane side chain of diethyl silicone rubber, its outstanding performance is particularly good cold resistance.
The outstanding performance is particularly good cold resistance. However, the reactivity of the ethyl group is greater than that of the methyl group, so the greater the content of the ethyl group, the lower the heat resistance. As a low-temperature use of ethyl silicone rubber, a polymer containing diethylsiloxane links of 8 grams molecular weight is preferred. Ethyl silicone rubber use temperature is generally -70 - 200 ℃.
8, silicon nitrogen rubber
Silicone nitrogen rubber's main advantage is that it has excellent thermal stability, in 430 ~ 480 ℃ does not decompose, and some can even withstand high temperatures above 500 ℃. Silicone nitrogen rubber's outstanding weakness is poor hydrolytic stability, was once thought to have no future. Later, it was found that the polymers introducing cyclic disilazane in the main chain have good thermal stability. Silicone arylene modified elastomer containing cyclic disilazane, heated to 425 ° C in air without weight loss, 570 ° C when the weight loss is only 10%, and has a good hydrolytic stability.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.