Abstract: Fluorine-silicone heterogeneous rubbers have been developed to address the issue of poor low-temperature resistance in fluorine rubber. Bi-functionalized SiO₂ nanoparticles have been prepared as a nano-compatibilizer to enhance the cooperation of fluorine-silicon heterogeneous rubbers and improve their compatibility. Research has demonstrated that the nano-compatibilizer can reduce the interfacial energy between the two phases and facilitate void-free dispersion of the phases. Fluorinesilicone heterogeneous rubbers with varying ratios have been synthesized to achieve a broad low-temperature range, from -34 to -58℃. Additionally, the use of the nano-compatibilizer enhances the thermal stability and mechanical properties of the rubbers. This study presents a novel approach utilizing bi-functionalized SiO₂ nanoparticles to promote the cooperation of fluorine-silicone heterogeneous rubbers, resulting in customizable low-temperature resistance for applications in sealing and hose materials.

https://doi.org/10.1002/pat.6544