近日，浙江农林大学刘丽娜团队报道了生物衍生阻燃固化剂，可一步合成超韧性、抑烟环氧树脂。2025年12月25日，《中国高分子科学杂志》发表了这一成果。

通过采用无溶剂一步中和法，使植酸与1,8-二氨基辛烷反应，成功制备出多功能生物基固化剂PA-DAO，从而实现了环氧树脂（EP）韧性与防火安全性的同步提升。当PA-DAO作为单一固化剂使用时，仅添加5 wt%的用量，环氧树脂的拉伸强度、弯曲强度和冲击强度较原始胺类固化体系分别提升了165%、81%和455%，而拉伸韧性和弯曲韧性更分别大幅提高了1387%和775%。在添加量为25 wt%时，树脂体系达到UL-94 V-0阻燃等级，极限氧指数为28.1%，同时峰值热释放率降低71%，总产烟量减少53%。这一简便、绿色的制备方法无需额外增塑剂或添加剂，即可规模化制备超韧、本质阻燃的环氧树脂网络体系。

附：英文原文

Title: Bio-derived Flame-retardant Curing Agents Enable One-step, Ambient Synthesis of Ultra-tough, Smoke-suppressed Epoxy

Author: Hang-Tian Hu, Dan Xie, Zheng-Hong Guo, Feng-Qing Chen, Xing-Wei He, Gao-Bo Lou, Jin-Feng Dai, Li-Na Liu

Issue&Volume: 2025-12-25

Abstract: A simultaneous boost in toughness and fire safety of epoxy (EP) is achieved through solvent-free one-step neutralization of phytic acid with 1,8-diaminooctane to yield a multifunctional bio-based curing agent, PA-DAO. When used as the sole hardener, 5 wt% PA-DAO increased the tensile, flexural, and impact strengths by 165%, 81%, and 455%, respectively, over the parent amine system, whereas the tensile and flexural toughness increased by 1387% and 775%, respectively. At 25 wt% loading, the resin attained a UL-94 V-0 rating and a limiting oxygen index of 28.1%, accompanied by a 71% reduction in the peak heat-release rate and a 53% suppression of total smoke production. This facile, green protocol provides scalable access to ultra-tough, intrinsically flame-retardant epoxy networks without external plasticizers or additives.

DOI: 10.1007/s10118-025-3471-y

Source: https://www.cjps.org/en/article/doi/10.1007/s10118-025-3471-y/