The Evaluation of 3D Printed Layered Insulation Consisting of PET-G and TPE Materials

Abstract

This paper investigates the suitability of 3D-printed dielectric insulation composed of PET-G (Polyethylene Tereph-thalate Glycol) and TPE (Thermoplastic Elastomer) materials, focusing on their performance as an insulation in DC (Direct current) applications. For this goal, several diagnostic methods were employed, including dissipation factor measurement, dielectric strength testing, broadband dielectric spectroscopy, volume resistivity measurement, and the Pulse Electro-Acoustic (PEA) method, to evaluate the electrical properties and reliability of such insulation material. The addition of a TPE layer over the PET-G base material is considered as a way to enhance abrasion resistance while maintaining the dielectric properties. However, challenges related to space charge accumulation and its impact on long-term performance, particularly under DC conditions, are considered, as the nature of 3D printed parts strongly support space charge accumulation under DC electric field.