“…Currently, conventional dielectric materials still face some problems, including low flexibility, high cost, unfavorable miniaturization design and processing, and so forth, which restrict their wide application. In contrast, polymer dielectric materials 11–13 overcome the above drawbacks and show the advantages of low cost, excellent process capability, and high toughness. For example, as a polymer dielectric material with high electric resistance and heat resistance, epoxy resin (EP) has been widely used for capacitors, dielectric elastomers, and thin film transistors 14,15 .…”