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Molecular Dynamics Simulation Based Enhancement of Thermo-mechanical Properties of Basin Insulator Composite Epoxy Insulation MaterialDUAN, Y. |
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Author keywords
epoxy resin, basin insulators, thermo-mechanical properties, thermal conductivity, molecular dynamics
References keywords
epoxy(31), molecular(22), dynamics(17), resin(16), properties(15), polymer(14), simulation(11), mechanical(11), cross(8), voltage(7)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2025-06-30
Volume 25, Issue 2, Year 2025, On page(s): 3 - 10
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2025.02001
Web of Science Accession Number: 001555002100001
SCOPUS ID: 105009943344
Abstract
Given the critical role of epoxy resin's thermo-mechanical performance in the long-term safety of gas-insulated switchgear (GIS), this study focuses on enhancing epoxy resin properties through molecular dynamics modeling in Materials Studio. By considering real components, using bisphenol A-type epoxy resin (DGEBA) as the matrix with 3,3-diaminodiphenylsulfone (33DDS) or methyl-tetrahydrophthalic anhydride (MeTHPA) curing agents, Al2O3 filler, and phenol (Ph) accelerator, several molecular dynamics models with different components were established. Crosslinking analyses in 0% to 93% were performed via Perl scripts, with thermo-mechanical properties analyzed across different components and crosslinking degrees in the 250-600 K temperature range. The results indicate that Al2O3 fillers effectively raise the glass transition temperature of epoxy resins while significantly enhancing their thermal conductivity. Higher crosslinking degrees enhance overall mechanical properties, while formulas with fillers and anhydride curing agents show improved specific mechanical indices. Additionally, increased crosslinking degrees elevate molecular chain segment mobility, and filler addition reduces mean square displacement curve slopes. This work provides a theoretical base for optimizing epoxy insulation reliability in GIS applications. |
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