1. 湖北工业大学新能源及电网装备安全监测湖北省工程研究中心,武汉,430068
2. 南方电网科学研究院有限责任公司,广州,510080
收稿:2026-04-30,
纸质出版:2026
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伍云健, 甘雅琪, 彭晨, 等. 时间-温度协同作用对环氧Vitrimer再生材料性能的影响[J]. 高电压技术, 2026,52(4):1774-1784.
WU Yunjian, GAN Yaqi, PENG Chen, et al. 时间-温度协同作用对环氧Vitrimer再生材料性能的影响[J]. 2026, 52(4): 1774-1784.
伍云健, 甘雅琪, 彭晨, 等. 时间-温度协同作用对环氧Vitrimer再生材料性能的影响[J]. 高电压技术, 2026,52(4):1774-1784. DOI: 10.13336/j.1003-6520.hve.20250225.
WU Yunjian, GAN Yaqi, PENG Chen, et al. 时间-温度协同作用对环氧Vitrimer再生材料性能的影响[J]. 2026, 52(4): 1774-1784. DOI: 10.13336/j.1003-6520.hve.20250225.
环氧树脂是电气领域重要的基础性绝缘材料,其稳定的交联网络结构使它难以回收,进而引发严重的环境问题和资源浪费。而环氧Vitrimer凭借键交换反应具备了热塑特性,为环氧热固性材料的回收利用开辟崭新路径。在此背景下,该文系统研究了时间-温度协同作用对再生Vitrimer树脂的电气性能、热学性能和机械性能的影响。结果表明:随着热压回收温度的升高,再生样品电气性能和机械性能先上升后下降,对热学性能无明显影响;随着时间延长,电气性能和机械性能呈上升趋势,却存在性能饱和现象,对热学性能无明显影响;在时间-温度协同作用下,再生样品的界面连接遵循阿伦尼乌斯型的时间和温度叠加效应;时间与温度通过调控热压过程中的分子链重组效率,共同影响再生材料的性能演变;通过调控时间-温度的组合,可在保证反应充分性的同时避免热降解,使电气强度、力学性能及热稳定性达到最佳匹配。该成果为优化环氧酸酐Vitrimer的热压回收工艺,拓展其循环利用潜力,提供了理论依据与实践指导,有望推动高性能可再生聚合物材料的进一步发展。
Epoxy resin serves as an essential insulating material in electrical applications. Its persistent crosslinked network structure impedes effective recycling
leading to significant environmental burdens and resource depletion. Epoxy Vitrimer
however
exhibits thermoplastic properties due to bond exchange reactions. This characteristic provides a novel approach for recycling thermosetting epoxy materials. We systematically investigated the effects of time-temperature synergy on the electrical
thermal
and mechanical properties of recycled Vitrimer resin. The results indicate that
as the thermal compression recycling temperature increases
the electrical and mechanical properties of the recycled samples initially improve and then decline
while the thermal properties remain largely unaffected. With prolonged time
the electrical and mechanical properties show an upward trend
but a saturation phenomenon is observed. Again
the thermal properties exhibit no significant changes. Under synergistic time-temperature conditions
the interfacial bonding of regenerated samples adheres to an Arrhenius-type time-temperature superposition principle. This behavior originates from their concerted modulation of molecular chain reorganization efficiency during hot-pressing
collectively governing the performance evolution of recycled materials. Optimizing time-temperature conditions ensures sufficient reactions while preventing thermal degradation
achieving optimal electrical
mechanical
and thermal properties. This study provides theoretical and practical insights into improving the thermal compression recycling of epoxy-anhydride Vitrimer
enhancing its recyclability and advancing high-performance renewable polymer materials.
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