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Chemical degradation and recovery technology of anhydride-cured epoxy resin for wind turbine blades
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Meng WANG1, Detao WU2, Fumei WU2, Yang DONG2
Thermal Power Generation | 2026, 55(1) : 39 - 47
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Thermal Power Generation | 2026, 55(1): 39-47
• Special topic on resource utilization of decommissioned wind and solar power equipment •
Chemical degradation and recovery technology of anhydride-cured epoxy resin for wind turbine blades
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Meng WANG1, Detao WU2, Fumei WU2, Yang DONG2
Affiliations
  • 1.China Energy Railway Equipment Co., Ltd., Beijing 100089, China
  • 2.National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China
Published: 2026-01-25 doi: 10.19666/j.rlfd.202505087
Outline
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The anhydride-cured epoxy resin can be made into structural parts such as wind turbine blades and girders by pultrusion process. After crosslinking, it is difficult to degrade and recycle, which is one of the difficulties in the treatment of wind turbine blades. Methyl tetrahydro phthalic anhydride is a kind of anhydride curing agent. The effects of different liquid organic amines, different catalysts and different process conditions on the degradation of epoxy resin block cured by this anhydride were studied, and the best combination of degradation solution and degradation catalyst and degradation process conditions were determined, which realized the rapid degradation of anhydride cured epoxy system. At the same time, the degraded products were extracted and separated, and detected by infrared ray (IR) and nuclear magnetic resonance (NMR), and the main components of the recovered products were determined. Moreover, the degradation mechanism of the anhydride-cured epoxy resin by liquid organic amine was deduced, which provided a new idea and beneficial exploration for chemical recovery and reuse of the anhydride-cured epoxy resin.

wind turbine blades  /  organic amines  /  anhydride  /  epoxy resin  /  degradation
Meng WANG, Detao WU, Fumei WU, Yang DONG. Chemical degradation and recovery technology of anhydride-cured epoxy resin for wind turbine blades[J]. Thermal Power Generation, 2026 , 55 (1) : 39 -47 . DOI: 10.19666/j.rlfd.202505087
Funding
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  • Scientific and Technological Innovation Project of National Energy Group(GJNY-20-141)
Appendix
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Year 2026 volume 55 Issue 1
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Article Info
doi: 10.19666/j.rlfd.202505087
  • Receive Date：2025-05-28
  • Online Date：2025-10-27
  • Published：2026-01-25
Article Data
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History
  • Received：2025-05-28
  • Revised：2025-06-16
  • Accepted：2025-06-25
Funding
Scientific and Technological Innovation Project of National Energy Group(GJNY-20-141)
Affiliations
    1.China Energy Railway Equipment Co., Ltd., Beijing 100089, China
    2.National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China
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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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