Effect of Thermal Aging on Mechanical Performance of GF/PBT Composites for High Voltage Bushing-Reference-Cited by-同舟云学术

Effect of Thermal Aging on Mechanical Performance of GF/PBT Composites for High Voltage Bushing

Published:2024-07-25 Issue: Volume: Page:
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Author:

Wang Qianli¹,Zhou Liying²,Shang Xin²,Duanmu Tianyang²,Ma Huimin²

Affiliation:

1. State Grid Chifeng Power Supply Company

2. State Grid East Inner Mongolia Electric Power Research Institute

Abstract

The present work aims to study the mechanical performance of glass fiber reinforced polybutylene terephthalate (GF/PBT) composite materials used for high-pressure casing under different thermal aging temperatures. Both tensile and three-point bending tests are conducted on the thermally aged GF/PBT samples. Meanwhile, the stress analysis is performed using the finite element method, and the tensile fracture morphology and mode are observed using a scanning electron microscope. The findings reveal a decline in both tensile and bending strengths of GF/PBT as the aging temperature rises. It is worth noting that the elastic modulus of the composite samples remained relatively unaffected by thermal aging. The thermally aged materials exhibit brittle fracture, which directly affects the bonding performance between glass fibers and PBT matrix.

Publisher

Springer Science and Business Media LLC

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