Bio-based Epoxy Composites Demonstrating High Temperature Breakdown Strength and Thermal Conductivity for High Voltage Insulation

Ke-Rong Yang; Jin-Yue Dai; Shuai-Peng Wang; Wei-Wei Zhao; Xiao-Qing Liu

doi:10.1007/s10118-025-3254-5

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Bio-based Epoxy Composites Demonstrating High Temperature Breakdown Strength and Thermal Conductivity for High Voltage Insulation

RESEARCH ARTICLE | Updated：2024-12-31

- Bio-based Epoxy Composites Demonstrating High Temperature Breakdown Strength and Thermal Conductivity for High Voltage Insulation
- Bio-based Epoxy Composites Demonstrating High Temperature Breakdown Strength and Thermal Conductivity for High Voltage Insulation
- 高分子科学（英文） 2025年43卷第1期页码：40-52
- Affiliations：
  
  Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Author bio：
  
  Daijinyue@nimte.ac.cn (J.Y.D.)
  liuxq@nimte.ac.cn (X.Q.L.)
- Funds：
  
  This work was financially supported by the China Postdoctoral Science Foundation (No. 2023M743622), Natural Science Foundation of Ningbo City (No. 2024J109), National Natural Science Foundation of China (Nos. E52307038 and U23A20589), Ningbo 2025 Key Scientific Research Programs(Nos. 2022Z111, 2022Z160 and 2022Z198) and the Leading Innovativeand Entrepreneur Team Introduction Program of Zhejiang(No.2021R01005).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-025-3254-5.
- DOI：10.1007/s10118-025-3254-5
  中图分类号：
- 纸质出版日期：2025-01-01，
  
  网络出版日期：2024-12-25，
  
  收稿日期：2024-09-10，
  
  修回日期：2024-10-01，
  
  录用日期：2024-10-16
- Accepted：
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Yang, K. R.; Dai, J. Y.; Wang, S. P.; Zhao, W. W.; Liu, X. Q. Bio-based epoxy composites demonstrating high temperature breakdown strength and thermal conductivity for high voltage insulation. Chinese J. Polym. Sci. 2025, 43, 40–52

KE-RONG YANG, JIN-YUE DAI, SHUAI-PENG WANG, et al. Bio-based Epoxy Composites Demonstrating High Temperature Breakdown Strength and Thermal Conductivity for High Voltage Insulation. [J]. Chinese journal of polymer science, 2025, 43(1): 40-52.
Yang, K. R.; Dai, J. Y.; Wang, S. P.; Zhao, W. W.; Liu, X. Q. Bio-based epoxy composites demonstrating high temperature breakdown strength and thermal conductivity for high voltage insulation. Chinese J. Polym. Sci. 2025, 43, 40–52 DOI： 10.1007/s10118-025-3254-5.

KE-RONG YANG, JIN-YUE DAI, SHUAI-PENG WANG, et al. Bio-based Epoxy Composites Demonstrating High Temperature Breakdown Strength and Thermal Conductivity for High Voltage Insulation. [J]. Chinese journal of polymer science, 2025, 43(1): 40-52. DOI： 10.1007/s10118-025-3254-5.

摘要

Bio-based electrical epoxy resin with intrinsically high thermal conductivity

high breakdown strength and low dielectric loss promotes the green and environmental-friendly transformation of electric power equipment to achieve sustainable development.

Abstract

The demand for energy-efficient and environmental-friendly power grid construction has made the exploitation of bio-based electrical epoxy resins with excellent properties increasingly important. This work developed the bio-based electrotechnical epoxy resins based on magnolol. High-performance epoxy resin (DGEMT) with a double crosslinked points and its composites (Al

/DGEMT) were obtained taking advantages of the two bifunctional groups (allyl and phenolic hydroxyl groups) of magnolol. Benefitting from the distinctive st

ructure of DGEMT

the Al

/DGEMT composites exhibited the advantages of intrinsically high thermal conductivity

high insulation

and low dielectric loss. The AC breakdown strength and thermal conductivity of Al

/DGEMT composites were 35.5 kV/mm and 1.19 W·m

−1

·K

−1

respectively

which were 15.6% and 52.6% higher than those of petroleum-based composites (Al

/DGEBA). And its dielectric loss tan

=0.0046 was 20.7% lower than that of Al

/DGEBA. Furthermore

the mechanical

thermal and processing properties of Al

/DGEMT are fully comparable to those of Al

/DGEBA. This work confirms the feasibility of manufacturing environmentally friendly power equipment using bio-based epoxy resins

which has excellent engineering applications.

关键词

Keywords

Bio-based epoxy compositesMagnololBreakdown strengthThermal conductivityDielectric loss

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