Electrical properties of polyetherimide thin films: Nonparametric dielectric reponse analysis with distribution of relaxation times

TL;DR

This paper investigates the dielectric properties of polyetherimide thin films, focusing on polarization and conduction processes, to evaluate their suitability for high-temperature electrical insulation and energy storage applications.

Contribution

It introduces a nonparametric dielectric response analysis using a distribution of relaxation times to characterize polyetherimide's electrical behavior.

Findings

Polyetherimide exhibits high glass transition temperature over 200°C.

Dielectric response analysis reveals multiple relaxation processes.

Results support polyetherimide's potential for high-temperature electrical applications.

Abstract

High temperature polymeric materials for electrical insulation and energy storage are needed for transformational power applications such as pulsed-power and hyrid electrical vehicles. One of the candidate materials has been polyetherimide, an amourphous thermoplastic with a glass transition over 200C. Here dielectric studies on the material are reported by taking into account the polarization and conduction processes in the polyetherimide.