Methyl phenyl silicone oil has higher viscosity temperature coefficient, lower freezing point and flash point than dimethyl silicone oil with the same viscosity, and the viscosity changes faster under pressure. The low temperature resistance of low phenyl silicone oil is significant, and it also has fluidity at -70 ℃. With the increase of molar fraction of phenyl, the high temperature resistance, radiation resistance, lubricity and solubility in organic solvents of silicone oil are improved. But the low temperature resistance decreased. When the silicone oil with high phenyl molar fraction is heated above 250 ℃, oxidation occurs and the viscosity increases. In particular, 50% of the phenyl mole fraction of silicone oil, adding a stabilizer can be used for several hundred hours at 300 ~ 350 ° C



application:
Because of its excellent performance, phenyl silicone oil can be applied to many fields of national life and production.
1, In the application field of methyl silicone oil, methyl phenyl silicone oil can be used to play its advantages of low temperature resistance, high temperature resistance, lubricity and compatibility. Low phenyl silicone oil is especially suitable for occasions requiring high cold resistance; Medium phenyl and high phenyl silicone oil has high thermal stability and good radiation resistance. It can be used as heat treatment bath for metal products, high temperature heating oil, gas chromatography carrier, high and low temperature lubricating oil for electronic and electrical equipment. Adding carbon black, lithium soap or molybdenum disulfide made of high temperature grease can be used for high temperature fan bearings, ball bearings, automotive engines, textile dryers and other lubrication;

2, in addition, in hydraulic, instrumentation, electrical insulation and other aspects also have a wide range of applications. Phenyl vinyl silicone oil and phenyl hydrogen-containing silicone oil can be used to prepare high temperature and radiation resistant silicone rubber. Hydroxy-terminated phenyl silicone oil as fabric finishing agent can significantly improve the smoothness and flexibility of the fabric, and give the fabric a good hydrophobic oil repellent. The good compatibility of phenyl silicone oil can be used as the internal additive of plastics to improve its processing performance.

3, The compatibility of methyl phenyl silicone oil and cosmetic ingredients is better than that of methyl silicone oil, stable to heat and ultraviolet light, and has a unique luster, which is often used as an additive for skin care products, hair conditioner and other personal care products. The silicone oil containing methyl phenyl siloxane link can prepare colorless transparent products with high phenyl content and moderate viscosity, and can be used as LED packaging materials by using its characteristics of high light transmittance, high refractive index, good thermal stability and radiation resistance