1. Temperature resistance
Most of the general polymer materials have a carbon-carbon (C-C) bond as the main chain structure, such as plastics, rubber, chemical fibers, etc., while silicone products are based on a silicon-oxygen (Si-O) bond as the main chain structure. , the bond energy of C-C bond is 82.6 kcal/mol, and the bond energy of Si-O bond is 121 kcal/mol in silicone, so the thermal stability of silicone products is high, under high temperature (or radiation irradiation) The chemical bonds of the molecules are not broken or decomposed. Silicone is not only resistant to high temperatures, but also low temperatures, and can be used in a wide temperature range. Whether it is chemical properties or physical and mechanical properties, the change with temperature is very small, which is also related to the flexible helical structure of silicone molecules.

2. Weather resistance
The main chain of silicone products is -Si-O-, and there is no double bond, so it is not easy to be decomposed by ultraviolet light and ozone. In silicone products, the chain length of Si-O bonds is approximately one and a half times the chain length of C-C bonds. Longer chain lengths give silicones better thermal stability and resistance to radiation and weather than other polymer materials. The service life of silicone in natural environment can reach several decades.

3. Electrical insulation properties
Silicone products have good electrical insulation properties, and their dielectric loss, withstand voltage, arc resistance, corona resistance, volume resistivity and surface resistivity are among the best in insulating materials, and their electrical properties are affected by temperature and frequency. impact is small. Therefore, they are a stable electrical insulating material and are widely used in the electronics and electrical industries. In addition to excellent heat resistance, silicone also has excellent water repellency, which is the guarantee of high reliability of electrical equipment in wet conditions.

4. physiological inertia
Polysiloxanes are among the most inactive compounds known. They are very resistant to biological aging, have no rejection reaction with animal bodies, and have good anticoagulant properties.

5. Low surface tension and low surface energy
The backbone of silicone is very flexible, and this excellent flexibility is due to the basic geometric molecular configuration. Because its intermolecular force is much weaker than that of hydrocarbons, it has lower viscosity, weaker surface tension, smaller surface energy and stronger film-forming ability than hydrocarbons of the same molecular weight. This low surface tension and low surface energy are the main reasons for its many applications: hydrophobicity, defoaming, foam stabilization, anti-sticking, lubrication, glazing and other excellent properties.