Research on the Toughening and Performance of Epoxy Resin for Electrical Packaging

Luo Chumeng; Cui Huize; Guo Ruilu; Gu Wenwen; Zhang Chong; Zhao Chaofeng; Chen Shuo

doi:10.1049/ema3.70033

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Research on the Toughening and Performance of Epoxy Resin for Electrical Packaging

更新时间：2026-09-24

- Research on the Toughening and Performance of Epoxy Resin for Electrical Packaging
- Electrical Materials and Applications Vol. 3, Issue 1, (2026)
- 作者机构：
  
  1. China Electric Power Research Institute,Beijing,China
  2. Contribution: Conceptualization, Data curation, Writing - review & editing, Writing - original draft, Investigation, Software
  3. Contribution: Writing - original draft, Funding acquisition, Resources
  4. Contribution: Methodology, Formal analysis, Validation
  5. Contribution: Visualization, Funding acquisition
  6. Contribution: Formal analysis, Project administration
  7. Contribution: Writing - original draft
  8. Contribution: Methodology
- 作者简介：
- 基金信息：
- DOI：10.1049/ema3.70033
  CLC：
- Published：2026
- 稿件说明：
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Luo Chumeng, Cui Huize, Guo Ruilu, et al. Research on the Toughening and Performance of Epoxy Resin for Electrical Packaging[J]. Electrical Materials and Applications, 2026, 3(1).
DOI：

Luo Chumeng, Cui Huize, Guo Ruilu, et al. Research on the Toughening and Performance of Epoxy Resin for Electrical Packaging[J]. Electrical Materials and Applications, 2026, 3(1). DOI： 10.1049/ema3.70033.

摘要

Abstract

With the advancements in power transmission technology

the construction environments for high-voltage (HV) and ultrahigh-voltage (UHV) transmission lines have become increasingly sophisticated

placing higher demands on the toughness of insulating encapsulating materials for electrical equipment. Although the inherent rigidity of epoxy resin (EP) contributes to its exceptional mechanical and electrical insulation performance

its inherent brittleness and poor impact resistance limit its application in the encapsulation of electrical devices operating under demanding conditions. To address this issue

this research selected two toughening agents with different toughening mechanisms to modify the epoxy resin formulation system for dry-type reactors. We aimed to verify how these toughening agents are based on their distinct mechanisms and highlight different toughening effects on the EP matrix. Consequently

a novel EP formulation system was developed

achieving significantly enhanced mechanical properties while maintaining uncompromised insulation performance.

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