Effect of Molecular Structure of Curing Agent on Properties of Naringenin Epoxy

被引:0
|
作者
Zhao G. [1 ]
Liu Z. [1 ]
Cheng Y. [1 ]
Li L. [1 ]
Ren S. [1 ,2 ]
Du Y. [1 ,2 ]
机构
[1] School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang
[2] Hebei Key Laboratory of Advanced Materials for Transportation Engineering and Environment, Shijiazhuang
关键词
curing agent; epoxy resin; mechanical properties; naringenin;
D O I
10.16865/j.cnki.1000-7555.2023.0132
中图分类号
学科分类号
摘要
The naringenin bio- based epoxy matrix (NEP) was synthesized from the natural flavonoid naringenin. Four curing agents with different molecular structures, including maleic anhydride (MAH), 4,4-diaminodiphenylmethane (DDM), furfurylamine (FA) and 5,5-methylenedifurfurylamine (DFA) were used to cure NEP matrix respectively. By testing the mechanical properties, dynamic mechanical properties and thermal stability of the four cured products, the effect of the molecular structure of the curing agents on the properties of naringenin epoxy was explored. The results show that multifunctional amine curing agents with flexible structure are more favorable to the formation of high crosslinking structure. However, due to the steric hindrance effect, the crosslink density of multifunctional amine curing agents is still significantly lower than that of small molecule anhydride curing agents. Among them, NEP/MAH has the highest crosslink density and highest impact strength of 4.8 kJ/m2. The glass transition temperature and initial thermal degradation temperature are 188.3 ℃ and 314 ℃, respectively. © 2023 Chengdu University of Science and Technology. All rights reserved.
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页码:78 / 84
页数:6
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