Insights into electric- and thermal-induced decomposition and gas evolution of silicone rubber through experiments and molecular simulations.

ABSTRACT: This study investigates the degradation state of silicone rubber (SiR) under electric and thermal fields by analyzing its gas-evolution characteristics. The goal is to provide a new diagnostic approach for high-voltage cable accessories. Thermogravimetry-infrared spectroscopy (TG-IR) was used to trace the thermal decomposition products. Electrical breakdown was simulated through discharge experiments. Density functional theory (DFT) calculations and reactive force field (ReaxFF) molecular dynamics simulations were employed to verify the reaction mechanisms and decomposition pathways. The results show that under electric field, SiR mainly produces CH₄, C₂H₂, and silane (SiH₄), accompanied by CO and CO₂. Under thermal field, the main pro

SUBMITTER: Gong J 

PROVIDER: S-EPMC12704586 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature