In our daily lives, silicone rubber may seem inconspicuous, but it has long permeated every aspect of our existence. From baby bottle nipples to smartphone waterproof seals, from medical catheters to aerospace seals, this material known as "specialty rubber" is playing an irreplaceable role in extreme environments and precision manufacturing with its unique molecular structure. A "Specialty Silicone Rubber Application Blue Paper" released today by the Chinese Society of Materials Research shows that with breakthroughs in modification technologies such as phenyl and fluoroalkyl groups, the application boundaries of silicone rubber are being infinitely expanded. The blue paper points out that the main chain of silicone rubber is composed of silicon-oxygen bonds (Si-O), whose bond energy is much higher than the carbon-carbon bonds (C-C) of ordinary rubber, giving it inherent high and low temperature resistance (-60°C to 250°C) and aging resistance. By introducing side chain groups such as phenyl and fluoroalkyl groups, special properties can be further imparted: phenyl silicone rubber, due to the "steric hindrance effect" of phenyl groups, can have its glass transition temperature reduced to -100°C, making it a "cold-resistant guardian" for deep space probes; fluorosilicone rubber, due to the "shielding effect" of fluorine atoms, has strong resistance to organic solvents such as fuel and lubricating oil and is widely used in aircraft engine seals. In the medical field, the biocompatibility of medical-grade silicone rubber is even superior to human tissue. Currently, several domestic enterprises have developed "implantable-grade phenyl silicone rubber" for long-term implantable devices such as artificial joints and heart valves, which show no obvious rejection reactions even after 10 years of in-body retention. In the consumer electronics field, liquid silicone rubber with high light transmittance and low hardness is becoming a key material for foldable smartphone hinges, capable of withstanding 200,000 folds without cracking, providing reliable support for flexible display technology. "Modifying silicone rubber is like 'molecular design'; by adjusting the type and proportion of side chain groups, materials that meet different needs can be customized," an expert from the Chinese Society of Materials Research metaphorically stated. "In the future, with the explosion of industries such as new energy vehicles, semiconductors, and biomedicine, silicone rubber will be upgraded from an 'industrial seasoning' to a 'strategic material'."
IOTA BHTV 3830 series phenyl compound rubber