Ethyl rubber, also known as ethyl silicone rubber, is a special organic silicon polymer material that introduces ethyl groups on the side groups of the main chain of polydimethylsiloxane. The change in molecular structure is the root cause of its unique physical properties. Compared with ordinary methyl silicone rubber, the introduction of ethyl groups disrupts the regularity and crystallization tendency of the original molecular chains, making them more flexible in space and greatly improving their degree of freedom of movement.

This structural adjustment directly leads to a significant decrease in the glass transition temperature of the material, enabling it to maintain excellent elasticity even in extreme low-temperature environments. Experimental data shows that the glass transition temperature of some ethyl rubber can be as low as minus 147 degrees Celsius, which means that in deep cold environments, it will not harden or crack like ordinary rubber, but can continue to play a buffering and sealing role of rubber.

In addition to excellent cold resistance, ethyl rubber also exhibits a constant elastic modulus and damping coefficient. When subjected to vibrations or impacts of different amplitudes, it can continuously provide stable elastic recovery force and effectively convert vibration energy into thermal energy for dissipation. This characteristic makes it highly valuable in the field of precision shock absorption. Meanwhile, ethyl rubber also retains the inherent good chemical stability of silicone rubber and exhibits strong resistance to various acids, bases, and organic solvents.

However, the introduction of ethyl also weakens the heat aging resistance of the material to a certain extent. Therefore, in application scenarios that require both low and high temperature resistance, it is usually necessary to add heat-resistant additives or copolymerize with other functional groups (such as phenyl) to make up for this shortcoming.

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