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
- Chinese Journal of Polymer Science Vol. 43, Issue 1, Pages: 40-52(2025)
- 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：
- DOI：10.1007/s10118-025-3254-5
  CLC：
- Received：10 September 2024，
  
  Revised：2024-10-01，
  
  Accepted：16 October 2024，
  
  Online First：25 December 2024，
  
  Published：01 January 2025
- 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

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