Features of soft rubber products

1. Temperature resistance characteristics: Silicone products have a silicon-oxygen (Si-O) bond as the main chain structure. The bond energy of the C-C bond is 82.6 kcal / g molecule. The bond energy of the Si-O bond is in the silicone. It is 121 kcal / g molecule, so the thermal stability of the silicone product is high, and the chemical bonds of the molecule do not break or decompose at high temperature (or radiation exposure). Silicone is not only resistant to high temperatures but also to low temperatures and can be used over a wide temperature range. Whether it is chemical or physical mechanical properties, the change with temperature is small.

2. Weather resistance: The main chain of silicone products is -Si-O-, and there is no double bond, so it is not easily decomposed by ultraviolet light and ozone. Silicone has better thermal stability and resistance to radiation and weather than other polymer materials. The service life of organic silicon in natural environments can reach decades.

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

4． Physiologically inert: Polysiloxanes are one of the least reactive compounds known. They are very resistant to biological aging, have no rejection reaction with the animal body, and have good anticoagulant properties.

5． Low surface tension and low surface energy: Silicone's main chain is very compliant, and its intermolecular force is much weaker than that of hydrocarbons. Therefore, it has lower viscosity, lower surface tension and surface energy than hydrocarbons of the same molecular weight. Small, strong film forming ability. 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.