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Design and properties of bio-based epoxy resin constructed via Schiff base dynamic covalent bonds
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Yang ZHANG1, Wenye ZHANG1, Weijie ZHOU1, Baoquan WAN2, Junwen REN3, Junwei ZHA1, 4, *
Insulating Materials | 2026, 59(3) : 1 - 8
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Insulating Materials | 2026, 59(3): 1-8
• Special Issue on Low-carbon Environmental Protection Advanced Insulation Materials •
Design and properties of bio-based epoxy resin constructed via Schiff base dynamic covalent bonds
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Yang ZHANG1, Wenye ZHANG1, Weijie ZHOU1, Baoquan WAN2, Junwen REN3, Junwei ZHA1, 4, *
Affiliations
  • 1School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 2State Key Laboratory of Power System Operation and Control, Tsinghua University, Beijing 100084, China
  • 3College of Electrical Engineering, Sichuan University, Chengdu 610065, China
  • 4State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
Published: 2026-03-20 doi: 10.16790/j.cnki.1009-9239.im.2026.03.001
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Under the "dual carbon" goals, traditional epoxy resins, which are depend on petrochemical feedstocks and are non-recyclable, have severely hindered the current transformation of power systems. Developing low-carbon and environmental friendly epoxy resins has become a research focus. This study adopted a “rigidity-flexibility” balancing strategy to prepare a bio-based epoxy resin with Schiff base dynamic covalent bonds cured directly by an aldehyde-terminated bio-based epoxy crosslinker and a diamine. Its mechanical properties, insulation performance, and property changes before and after multiple recycling processes were investigated. The results show that the novel epoxy resin achieves a tensile strength of 70.1 MPa and an electric strength of 130 kV/mm. This dynamically cross-linked epoxy resin can be effectively reprocessed and recycled via solvent, retaining a tensile strength of 58.8 MPa and an electric strength of 111 kV/mm after multiple reprocessing cycles.

epoxy resin  /  bio-based  /  dynamic crosslinking  /  solvent recovery  /  reprocessable
Yang ZHANG, Wenye ZHANG, Weijie ZHOU, Baoquan WAN, Junwen REN, Junwei ZHA. Design and properties of bio-based epoxy resin constructed via Schiff base dynamic covalent bonds[J]. Insulating Materials, 2026 , 59 (3) : 1 -8 . DOI: 10.16790/j.cnki.1009-9239.im.2026.03.001
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doi: 10.16790/j.cnki.1009-9239.im.2026.03.001
  • Receive Date：2025-09-01
  • Online Date：2026-09-10
  • Published：2026-03-20
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  • Received：2025-09-01
  • Revised：2025-10-29
Affiliations
    1School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
    2State Key Laboratory of Power System Operation and Control, Tsinghua University, Beijing 100084, China
    3College of Electrical Engineering, Sichuan University, Chengdu 610065, China
    4State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2026.03.001
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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