Properties and curing kinetics of epoxy resin toughened by dimer acid diglycidyl ester

被引：22

作者：

Yu, Min ^{[1
]}

Fu, Qinghe ^{[1
]}

Zhang, Tongtong ^{[1
]}

Chen, Yanqin ^{[1
]}

Tan, Jihuai ^{[1
,2
]}

Zhou, Yonghong ^{[3
]}

Zhu, Xinbao ^{[1
,2
,4
]}

机构：

[1] Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Peoples R China

[2] Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China

[3] CAF, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China

[4] Anhui Engn Res Ctr Epoxy Resin & Addit, Huangshan 245900, Peoples R China

来源：

THERMOCHIMICA ACTA | 2021年 / 699卷

基金：

国家重点研发计划;

关键词：

Dimer acid; Bio-based epoxy resin; Toughener; Curing performance; Curing kinetics; BIOBASED EPOXIES; TUNG OIL; SYSTEM; THERMOSETS; AGENT;

D O I：

10.1016/j.tca.2021.178910

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work, dimer acid diglycidyl ester (DAGE) was synthesized from the dimer acid via a two-step method and applied as a bio-based toughener for bisphenol A epoxy resin (DGEBA). Mechanical tests demonstrated that DAGE had significant effects on the flexibility of DGEBA. When 5 wt% DAGE was incorporated into DGEBA system, there was an enhancement of 2.56 times of the impact strength. Meanwhile, the tensile strength and elongation at break increased by 17.2 % and 13.4 %, respectively. In addition, the curing behavior of DAGE/DGEBA system was kinetically modeled based on non-isothermal DSC data. The incorporation of DAGE has little effect on the apparent activation energy of the system. Moreover, the curing process can be accurately described by the Sestak-Berggren model. The bio-derived DAGE holds great potential for practical applications.

引用

页数：10

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