As one of the use forms of organic silicone rubber product materials, foaming silicone is a soft and flexible elastomer compound, divided into closed pass, open pass and mixed type three.

It not only has the properties of high and low temperature resistance, heat aging resistance, ultraviolet resistance and high flame retardant of silicone rubber material, but also has the properties of sound absorption, shock absorption, sealing and high rebound of foam material. The specific properties are as follows:

1. High and low temperature resistance
Foaming silica gel has excellent mechanical properties at high temperature (more than 200℃), and still has a certain toughness and elasticity, and the glass transition temperature (Tg) can be as low as -70. Under normal circumstances, the foaming silicone working temperature is -100 ℃ to 350 ℃. It can withstand thousands of degrees of instantaneous high temperature, so it is often used to make high temperature and heat resistant coating, such as aviation field.

2. High flame retardant
Compared with polyurethane foam, foamed silica gel can meet the requirements of EN45545-2 in flame retardancy. Its foam density is 0.08~0.15g/cm3, and its service life can reach 2~4 times that of polyurethane foam. In addition, it is significantly superior to polyurethane foam in terms of comfort, foam density and environmental protection, so it is expected to replace traditional polyurethane foam in aerospace, rail transportation and high-end automobile industries.

3. Electrical insulation
Foamed silica gel has good insulation, and after combustion, the silica generated is still an insulating material. In addition, foamed silica gel in arc discharge, not easy to coke, because of the number of carbon atoms in its structure is less, and its reinforced filler white carbon black, suitable for high pressure occasions.

4. Physiological laziness
The surface of foamed silica gel is hydrophobic, therefore, the physical properties are reduced in a humid environment, and the adhesion is poor, which can play a role in isolation. And its environmental protection, non-toxic and tasteless, no harm to human health, which also created its excellent physiological inertia.

At the same time, it is also very superior in aging resistance.