The following is a systematic analysis of the biodegradability and environmental impact of fluorosilicone oil, combined with its chemical properties and application scenarios:

I. Biodegradation characteristics
‌Degradation mechanism and efficiency‌
The Si-O bond of the main chain of fluorosilicone oil can be partially enzymatically hydrolyzed by soil microorganisms, but the high stability of the C-F bond of the side chain significantly delays the complete mineralization process.
‌Measured data‌: In an activated sludge environment, the degradation rate of a specific modified fluorosilicone oil (such as atomized silicone oil) can reach 89.3% in 28 days, which meets the biological toxicity standard of GB/T 27818-2011.

‌Influencing factors‌
‌Environmental factors‌ ‌Degradation efficiency change trend‌ ‌Action mechanism‌
Temperature The degradation rate is highest at 30–40℃ Microbial metabolic activity is enhanced and hydrocarbon viscosity is reduced
Humidity The soil saturated moisture content is 30%-90% optimal Moisture promotes microbial migration and enzyme reaction
pH Neutral environment (pH 6.5–7.5) is optimal Acidic metabolites inhibit the activity of degradation enzymes

II. Environmental risks and prevention and control
(I) Pollution release pathways
‌Volatile organic compounds (VOCs):
The volatile matter of fluorosilicone oil (200℃×4h) is generally <5%. The VOCs emission in industrial applications is 67% lower than that of traditional materials, significantly reducing air pollution.
‌Chemical residues‌:
In the fields of textile finishing agents, its low surface tension (20–25 mN/m) reduces the amount of chemicals used by more than 50%, reducing the risk of soil enrichment.
(II) Long-term ecological impact
‌Biological accumulation‌:
Trifluoropropyl functional groups are difficult to be metabolized by organisms, and the carbon chain needs to be shortened through nano-modification or copolymerization processes to improve degradability.
‌Waste disposal‌:
Waste fluorosilicone rubber products can be recycled and regenerated to reduce resource dependence; if directly landfilled, the residual period of fluorine elements may exceed 10 years.

III. Environmental advantages and improvement directions
1. ‌Existing environmental benefits‌
Replace materials such as fluorinated polymers to reduce the risk of chemical pollution in the production process.
When used as a sealant/lubricant, the solvent resistance reduces pollution accidents caused by equipment leakage.
2. ‌Technical optimization focus‌
‌Green process development‌:
Promote ring-opening polymerization technology to replace traditional hydrolysis condensation method (by-product hydrochloric acid) to reduce pollutants from the source.
‌Biodegradable modification‌:
Introduce ester bonds or polyether segments to accelerate microbial decomposition (such as graphene oxide composite system)