In the microscopic world of electronics, the chip is the "brain," and the packaging material is the "skull" and "skin" that protects it. With the explosion of 5G communication, new energy vehicles, and artificial intelligence, electronic devices are facing unprecedented challenges: on one hand, high-frequency, high-speed operation generates massive heat, with local temperatures instantly breaking through 200°C; on the other hand, outdoor equipment may face freezing tests of -40°C in winter. This "fire and ice" extreme temperature difference can easily cause traditional packaging materials to crack or delaminate, leading to chip failure. Recently, industry experts have revealed a "secret weapon" to tackle this problem—fluorosilicone rubber. "You can imagine fluorosilicone rubber as a 'smart skin,'" explains a senior materials engineer. "Its molecular backbone consists of siloxane bonds, which are as flexible as a spring, allowing it to maintain elasticity without becoming brittle at low temperatures; while the fluorine atoms introduced on the side chains act like a dense 'armor,' endowing it with high-temperature resistance, oil resistance, and chemical corrosion resistance." Data shows that while ordinary silicone rubber has a wide temperature range, it is prone to swelling (volume expansion) when exposed to fuel, hydraulic oil, or strong acids and bases, leading to seal failure. Fluorosilicone rubber, thanks to the "shielding effect" of fluorine atoms, maintains volume stability and extremely low compression set even at 200°C and in strong corrosive media. Currently, this material is widely used in power modules for new energy vehicles, RF chips for 5G base stations, and aerospace electronic systems. It not only solves the physical damage caused by "thermal expansion and contraction" but also helps chips dissipate heat quickly through high thermal conductivity modification technology, ensuring electronic devices run "coolly" even in extreme environments. With the popularization of third-generation semiconductors (such as silicon carbide and gallium nitride) and further increases in operating temperatures, fluorosilicone rubber is being upgraded from an "auxiliary material" to a "strategic material" guaranteeing the reliability of electronic systems.
IOTA FLSR3400 addition-type liquid fluorosilicone rubber