Open AccessResearch on Aging Dielectric Properties and Physical Testing of Electric Vehicle Insulating Silicone Rubber under First Principles
Author(s) -
Zhiqiang Zhang,
Wenlin Wang,
Cheng Feng,
Peng He,
Jingcheng Yang,
Zhensheng Wu,
Haitao Yang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2083/2/022007
Subject(s) - silicone rubber , dielectric , materials science , natural rubber , composite material , optoelectronics
Aiming at the aging problem of insulating silicone rubber for new energy vehicles, this paper studies the equations of the aging of silicone rubber and its dielectric properties based on first-principles calculations. First, through the analysis of the microscopic mechanism of silicone rubber aging, the equations of the aging of silicone rubber and the rupture of the molecular main chain is obtained. Then the equations of silicone rubber molecular length and dielectric constant are solved by density functional theory. Ultimate, a molecular chain scission model of silicone rubber was built, and the micro-dielectric relationship was extended to the macroscopic level. The equation of the norm molecular length of silicone rubber and the dielectric constant is obtained. It provides an important theoretical basis for the aging detection of insulating silicone rubber for new energy vehicles based on electromagnetic waves.