Low temperature resistant silicone is a new generation of green, environmentally friendly and energy-saving silicone material. Its low-temperature molding can quickly cure, and it can be cured at 120 ° C. No need to add vulcanizing agents, no need for secondary vulcanization. Conventional silicone materials have a vulcanization temperature of 180 ° C and a long molding time, requiring the addition of catalysts such as bis (2,4) or bis (2,5), and the product requires two-stage vulcanization.

Low temperature resistant silicone rubber refers to silicone rubber with a working temperature of -100 ℃. Its structure is different from conventional silicone rubber, and it is obtained by introducing methyl phenyl siloxane or diphenyl siloxane chains into the molecular chains of methyl vinyl silicone rubber. Compression permanent deformation is small and the temperature range is wide. Below, Hongtu Silicone will introduce in detail the low-temperature resistant silicone.

Low temperature resistant silicone rubber introduces phenyl groups on the side groups of polysiloxane, which greatly reduces the crystallization temperature of the polymer due to the disruption of the regularity of the dimethylsiloxane structure. The working temperature of the resulting silicone gel is extended to -100 ℃.

In addition to small compression permanent deformation, wide temperature range, oxidation resistance, weather resistance, shock resistance, moisture resistance, and good electrical insulation performance, it also has low temperature resistance, erosion resistance, and radiation resistance.

Low temperature resistant silicone materials are divided into the following categories:
When the phenyl content (the ratio of phenyl to silicon atoms) is between 5-10%, it is called low phenyl silicone rubber.
When the phenyl content is 20-40%, it is called medium phenyl silicone rubber, which has flame resistance and can self extinguish once ignited.
When the phenyl content is between 40-50%, it is called high phenyl silicone rubber, which has radiation resistance The radiation is 1xI08 R ö ntgen.

Generally speaking, with the increase of phenyl content, the rigidity of silicone rubber molecular chains gradually increases, and the low-temperature resistance of silicone rubber gradually decreases. However, with the increase of phenyl content, the flame resistance and radiation resistance of vulcanized rubber are improved.

Low temperature resistant silicone materials are one of the important materials used in the aerospace industry, cutting-edge technology, and other sectors of the national economy. It can be used to make various molded and extruded products, as cold resistant rubber for the aviation industry, or as sealing components for parts that are resistant to erosion, heat aging, and radiation.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber