Hydrogen-containing fluorosilicone oil has recently made a major technological breakthrough in the field of new energy vehicle battery encapsulation. With its unique active silicon-hydrogen bond structure and efficient cross-linking characteristics, this material has become a core component in lithium-ion battery safety sealing systems, providing innovative solutions to address electrolyte leakage and thermal runaway risks in power batteries under extreme operating conditions.

Research shows that by regulating hydrogen content (0.2%-1.0%) and molecular structure, hydrogen-containing fluorosilicone oil can achieve rapid and controllable cross-linking reactions with various polymer matrices at room temperature. Battery sealants prepared using this technology maintain stable mechanical properties within a temperature range of -40°C to 150°C, with volume resistivity remaining above 10¹⁶ Ω·cm and peel strength reaching 8-12 N/mm. More notably, the material demonstrates exceptional tolerance to carbonate-based electrolytes, retaining over 90% of its mechanical properties after 1,000 hours of immersion in high-temperature electrolyte at 85°C.

In the new energy vehicle sector, hydrogen-containing fluorosilicone oil cross-linking systems have been successfully applied in module encapsulation for ternary lithium batteries and lithium iron phosphate batteries. Real vehicle test data shows that battery modules using this sealing technology reduce electrolyte leakage by more than 95% compared to traditional solutions during rigorous multi-faceted testing simulating collisions, vibrations, and thermal shock. Particularly in nail penetration safety tests, this technology successfully extends thermal runaway propagation time to three times that of traditional sealing solutions, providing valuable time for battery system safety warnings and emergency responses.

With the rapid development of fast-charging technology, hydrogen-containing fluorosilicone oil demonstrates unique value in addressing thermal management challenges brought by high-rate charging. The newly developed high thermal conductivity modified version improves thermal conductivity to 0.8 W/(m·K) while maintaining excellent sealing performance, effectively accelerating heat dissipation within batteries. Simultaneously, key breakthroughs have been made in the solvent-free preparation technology of this material, reducing volatile organic compound emissions to below 50 ppm, complying with the most stringent automotive interior air quality standards.

Industry experts note that this breakthrough not only marks a new development phase in power battery encapsulation technology but will also drive the entire new energy vehicle industry chain toward higher safety standards. With the accelerated commercialization of solid-state battery technology, compatibility improvement work for hydrogen-containing fluorosilicone oil is fully underway, and it is expected to achieve large-scale application in next-generation battery systems within the next three years.