I. Low temperature flexibility
Fluorosilicone rubber can maintain excellent flexibility under low temperature conditions, which is mainly due to the abundant fluorine elements in its molecular chain. The introduction of fluorine elements significantly changes the intermolecular interactions in rubber. In conventional rubber, the intermolecular interactions are often strong, which leads to reduced mobility of the molecular chains at low temperatures, resulting in rigid rubber. However, in fluorosilicone rubber, the presence of fluorine elements weakens the intermolecular interactions, resulting in increased distance between molecular chains and enhanced mobility of the molecular chains. This change allows fluorosilicone rubber to maintain good flexibility at low temperatures and is less prone to embrittlement or cracking.

II. Flame retardancy
Fluorosilicone rubber exhibits excellent flame retardant properties at high temperatures, which is mainly attributed to the fluorine and silicon elements in its molecular chain. Both elements have high chemical stability, making the molecular chain of fluorosilicone rubber less susceptible to oxidation or decomposition at high temperatures. When fluorosilicone rubber is exposed to high temperatures, its molecular chain can remain stable, and it is not prone to generating flammable gases or undergoing combustion reactions. In addition, the inertness of fluorine and silicon elements can effectively prevent the spread of flames on the rubber surface, further improving its flame retardant properties. Therefore, fluorosilicone rubber has broad application prospects in fields requiring high flame retardant properties, such as aerospace and automotive manufacturing.