According to statistics, the average amount of silicone rubber used in a large civil aviation airliner is more than 500 kg. Silicone is widely used in aviation and aerospace industries. Silicone rubber is a highly elastic silicone polymer material with high elasticity, good fatigue resistance, electrical insulation, wear resistance, high and low temperature resistance, radiation resistance, aging resistance, non-toxic and physiologically inert Etc.
Because silicone rubber has the above advantages, it is widely used in aerospace vehicles. For example, wire covering, hydraulic system, exposed system, engine cylinder, various sealing rings of pilot and astronaut life support systems used in aircraft and aircraft, rubber hose, hose, glue tank and capsule, electrical insulation bushing, hot air Catheters and the like are made of silicone rubber material. VMQ seal ring can be used for the sealing of aircraft doors and windows, the sealing of rectifying plates and elastic gaps of aircraft control surfaces, and silicone rubber can also be used for fuel systems. And most of the exposed systems on the aircraft, such as the seals of the cockpit, bomb bay, landing gear cabin and high-altitude photography cabin, can also use silicone rubber products.
Whether it is in the air, in the stratosphere or in the cold vacuum of space, aviation silicone rubber products can withstand amazing pressure and temperature extremes. The silicone rubber hot air duct reinforced by glass cloth is the front wing rims, jet engine air intake anti-icing devices and critical components for starting the engine and turning the turbine. High-temperature silicone rubber hot air duct has a high fatigue resistance temperature, and it can work for a long time above 300 °C. Many important models in the world have adopted this type of hot air duct and achieved good results. It replaces the traditional metal pipes for the heating and insulation of the cockpit and the engine. It not only avoids the problem of pipe rupture caused by vibration in the past, but also simplifies installation and reduces flight noise.
