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Aging resistance of fluorosilicone oil

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Fluorosilicone oil has significant advantages in aging resistance due to its unique molecular structure (fluorine-containing groups and silicon-oxygen bonds are alternately connected), which is specifically reflected in the following dimensions:

I. Structural characteristics and anti-aging mechanism
‌Molecular stability‌: The strong electronegativity of fluorine atoms gives fluorosilicone oil excellent antioxidant and chemical inertness, effectively resisting the chain oxidation reaction caused by free radicals; the high bond energy of silicon-oxygen bonds (>460 kJ/mol) ensures its structural integrity at high temperatures.
‌Synergistic protection effect‌: Fluorosilicone oil has both the solvent resistance of fluororubber and the weather resistance of silicone rubber, and its molecular chain can simultaneously resist the effects of aging such as ultraviolet rays, ozone, humidity and heat.

II. Key performance performance
‌Extreme temperature stability‌
Maintains stable performance in a wide temperature range of ‌-60℃~250℃‌, no precipitation and no carbonization at high temperature;
After aging in hot air at 200℃ for 70 hours, the hardness of fluorosilicone rubber (fluorinated silicone oil derivative) increased by only 6%, and the tensile strength retention rate was >69%.
‌Weather resistance and environmental resistance‌
After 5 years of outdoor exposure, the performance remains excellent, without powdering or cracking;
Highly stable to UV rays and ozone, no cracking occurs in long-term light or high-concentration ozone environment;
Resistant to heat and humidity aging: 48 hours in 70℃, 95% humidity environment, the coating appearance does not change.
‌Media compatibility‌
Outstanding oil resistance, almost no attenuation of physical properties after long-term immersion in mineral oil and fuel;
Resistant to chemical corrosion: Tolerant to acidic environment, methanol-containing gasoline and other highly corrosive media.

III. Typical application scenarios
‌High temperature seals‌: Fluorosilicone rubber seals (containing fluorosilicone oil structured control agent) extend the service life by more than 30% under -60℃~200℃ working conditions;
‌Protective coating‌: The wet flash voltage of the super-hydrophobic coating containing fluorosilicone oil is increased by 90.6%, and the anti-corrosion performance is stable within 20 years;
‌Medical equipment‌: The lubrication performance of medical fluorosilicone oil remains unchanged in the 260℃ steam sterilization cycle, and there are no degradation products.

Conclusion
Fluorosilicone oil achieves full life cycle anti-aging through the ‌fluorine-silicon synergistic effect‌ (molecular inertness + bond energy stability). Its performance decay rate in extreme temperatures, oxidative environments and chemical media is significantly lower than that of conventional silicone materials, making it the preferred long-lasting material for high-end sealing, protection and medical equipment.

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