（3）Electrical insulation performance
Organic silicon products 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 performance 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, organic silicon also has excellent water repellency, which is a guarantee for the high reliability of electrical equipment when used under wet conditions.

（4）Physiological inertness
Polysiloxane compounds are one of 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 main chain of silicone is very flexible, and this excellent flexibility is due to the basic geometric molecular configuration. Because the 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: hydrophobic, defoaming, foam stability, anti-sticking, lubrication, glazing and other excellent properties.