南京工业大学学报（自然科学版）2026，Vol.48Issue(1)：98-106,9.DOI:10.3969/j.issn.1671-7627.2026.01.010
蓖麻油基固化剂的制备及其对环氧树脂的增韧改性
Preparation of castor oil-based curing agents and their toughening effect on epoxy resin
摘要
Abstract
Two novel amide-type curing agents-maleated castor oil triethylenetetramine(MCOT)and maleated castor oil-diethylenetriamine(MCOD)——were synthesized from biomass-derived castor oil by introducing carboxyl groups and reacting with triethylenetetramine(TETA)and diethylenetriamine(DETA)via amidation.The influence of these castor oil-modified curing agents on the toughness of epoxy resin was investigated.The chemical structures of the products were confirmed by Fourier-transform infrared spectroscopy(FT-IR)and proton nuclear magnetic resonance(1H NMR).Both MCOT and MCOD were then used to cure bisphenol-A epoxy resin,and the properties of the cured resins were evaluated.Results indicated that the epoxy resins cured with MCOT and MCOD exhibited elongations at break of 21.64％and 32.22％,respectively,with corresponding toughness values of 45.5 MJ/m3 and 29.0 MJ/m3.SEM analysis revealed that the fracture surface of the MCOT-cured material exhibited typical ductile fracture features.Its thermal stability was superior to that of MCOD,achieving a maximum decomposition temperature of 488.7 ℃ and a char yield of 9.8％.This research offers novel insights for applying renewable resources in epoxy curing agents,and the synthesized curing agents demonstrate promising potential in flexible composite materials.关键词
改性蓖麻油/生物基材料/马来化/树脂增韧/环氧树脂/力学性能Key words
modified castor oil/bio-based materials/maleation/resin toughening/epoxy resin/mechanical properties分类
化学化工引用本文复制引用
曾其昕,刘海永,谢晖,黄莉,赵金国..蓖麻油基固化剂的制备及其对环氧树脂的增韧改性[J].南京工业大学学报（自然科学版）,2026,48(1):98-106,9.基金项目
国家自然科学基金青年科学基金(32401521) （32401521）
