Although fluorosilicone oil and phenyl silicone oil have their own advantages, their performance can be complemented through scientific blending or molecular design. Fluorosilicone oil is renowned for its excellent chemical resistance, hydrophobicity and oleophobicity, and is suitable for harsh corrosive environments; phenyl silicone oil, with its wide temperature stability range (-70°C to 300°C), high refractive index and radiation resistance, performs outstandingly in extreme temperatures and optical fields. When combined, they can simultaneously meet multiple requirements such as high-temperature resistance, resistance to solvent erosion and surface protection.
In practical applications, composite lubricating grease can be prepared through physical blending and used in aerospace sealing systems - phenyl silicone oil ensures low-temperature fluidity, while fluorosilicone oil resists the erosion of aviation fuel; it is also possible to synthesize fluorophenyl silicone oil at the molecular level, introducing phenyl and fluorinated alkyl groups on the same main chain, which is used in LED packaging, semiconductor photomasking resins or weather-resistant coatings, balancing high refractive index and anti-fouling properties. Additionally, in the battery coolant system of new energy vehicles, the compound system is being explored for enhancing the comprehensive stability of the heat-conducting medium.
Despite compatibility challenges and higher costs, in the context of high-end manufacturing and the "carbon neutrality" goal, the collaborative application of fluorosilicone oil and phenyl silicone oil represents a new direction for specialty silicone oils towards multi-functionality and high performance.