High entropy engineered polymer blends with enhanced dielectric properties and high temperature stability.

ABSTRACT: There is increasing need for higher performance dielectric polymers for devices in power conversion systems for renewable energy generation and electric vehicles. In particular, materials with higher dielectric permittivity, lower loss and the ability to operate at higher temperatures. We have developed a counter intuitive method to achieve this, the melt blending of multiple immiscible polymers, in an approach that mimics high entropy materials design. We demonstrate that using this approach we can significantly exceed the rule-of-mixtures for the dielectric constant (>250%), whilst surprisingly retaining a low loss tangent. The materials show increased thermal stability up to 150 °C, which opens up the possibility of the wider application of dielectric polymers. We provide a consistent m

SUBMITTER: Qi X 

PROVIDER: S-EPMC12518587 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature