Overcoming the Trade-Off between Electrical Insulation and Mechanical Robustness of Polymers by Inorganic Ionic Molecular Segments

, respectively. The overall electrical insulation and mechanical properties are superior to those of all reported and commercial bulk epoxy-based composites we have consulted. This work demonstrates that an inorganic ionic compound with a molecular-size effect is a promising unit for high-performance electrical insulation materials, supporting the development of advanced power equipment in the future.