The antioxidant life of phenyl silicone oil is significantly better than that of mineral oil-based high-temperature chain oil. Phenyl silicone oil has excellent high temperature resistance, antioxidant and radiation resistance through molecular structure modification, and can work stably for a long time at 300℃ or even higher temperatures; while mineral oil-based chain oil will oxidize and coke above 150℃, and its life is greatly shortened. The following is a specific analysis:

The core difference of antioxidant life comparison
The antioxidant advantage of phenyl silicone oil
Molecular structure characteristics: Phenyl silicone oil forms a more stable molecular structure by introducing phenyl groups into the silicon-oxygen chain. The steric hindrance effect of phenyl can effectively inhibit the free radical chain reaction and significantly delay the oxidative degradation process.
Thermal stability: Phenyl silicone oil can still maintain stable physical and chemical properties at a high temperature of 300℃, and its antioxidant life can reach several years or even longer. For example, after a nuclear power plant adopted high-phenyl silicone oil seals, the maintenance cycle in a radiation environment was extended from 3 years to 15 years, and the equipment failure rate decreased by 68%.
Radiation resistance: The tolerance value of phenyl silicone oil to gamma rays exceeds 10⁶Gy, far exceeding that of mineral oil-based chain oil, and is suitable for high-radiation environments such as nuclear power and aerospace.
Anti-oxidation limitations of mineral oil-based high-temperature chain oil
Oxidative coking problem: Mineral oil-based chain oil undergoes oxidation reaction above 150°C, generating sludge and colloid, resulting in carbon deposition and lubrication failure of the chain. The decoking cycle is only about 1 month, which greatly shortens the life of the equipment.
Thermal decomposition products: Mineral oil-based chain oil is easily decomposed into volatile small molecules at high temperatures, further aggravating the oxidation reaction and forming a vicious cycle.
Environmental protection and performance contradictions: Mineral oil-based chain oil needs to be frequently replenished, consumes a lot of oil and is easy to pollute the environment, and cannot meet the needs of modern industry for high efficiency and environmental protection.