Bi‐functionalized <scp>SiO₂</scp> nanoparticles induced cooperation of fluorine‐silicone heterogeneous rubbers with designable low‐temperature resistance

Abstract Fluorine‐silicone heterogeneous rubbers have been developed to address the issue of poor low‐temperature resistance in fluorine rubber. Bi‐functionalized SiO 2 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. Fluorine‐silicone heterogeneous rubbers with varying ratios have been synthesized to achieve a broad low‐temperature range, from −34 to −58°C. 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 SiO 2 nanoparticles to promote the cooperation of fluorine‐silicone heterogeneous rubbers, resulting in customizable low‐temperature resistance for applications in sealing and hose materials.