文献类型：期刊文献

英文题名：Tung Oil-Based Modifier Toughening Epoxy Resin by Sacrificial Bonds

作者：Xiao, Laihui[1,2,3,4] Huang, Jinrui[1,2,3,4,6] Wang, Yigang[1,2,3,4] Chen, Jie[1,2,3,4] Liu, Zengshe[5] Nie, Xiaoan[1,2,3,4]

第一作者：Xiao, Laihui

通信作者：Nie, XA[1];Nie, XA[2];Nie, XA[3];Nie, XA[4]|[a0005997aa787f4d4afa0]聂小安;

机构：[1]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, 16 Suojin Wucun, Nanjing 210042, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, 16 Suojin Wucun, Nanjing 210042, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Key Lab Chem Engn Forest Prod, Natl Forestry & Grassland Adm, 16 Suojin Wucun, Nanjing 210042, Jiangsu, Peoples R China;[4]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Inst Chem Ind Forest Prod, 16 Suojin Wucun, Nanjing 210042, Jiangsu, Peoples R China;[5]ARS, USDA, Natl Ctr Agr Utilizat Res, Biooils Res Unit, 1815 N Univ St, Peoria, IL 61604 USA;[6]Chinese Acad Forestry, Res Inst Forestry New Technol, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2019

卷号：7

期号：20

起止页码：17344-17353

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20194107522402);Scopus(收录号：2-s2.0-85073026745);WOS:【SCI-EXPANDED(收录号:WOS:000492117200044)】；

基金：This work was financially supported by National Key Research and Development Program of China (2017YFD0601304), National Natural Science Foundation of China for Youth Science Funds (51803234), Fundamental Research Funds of Research Institute of Forest New Technology, CAF (CAFYBB2019SY028), and the Science Foundation of Key Laboratory of Biomass Energy and Materials of Jiangsu Province (JSBEM-S-201703).

语种：英文

外文关键词：Sacrificial bond; Tung oil; Toughness; Epoxy resin; Renewable

摘要：Sacrificial bonds are critical for the excellent toughness of many natural materials. Herein, to toughen epoxy resin, a renewable toughener (TAA) was prepared by incorporating cyano groups into tung oil, which could form sacrificial bonds by the dipole-dipole interaction and hydrogen bonds. After different contents of TAA were added into diglycidyl ether of bisphenol A, modified epoxy resins were cured by polyetherdiamine. Thermal mechanical properties, morphology, and thermostability of toughened epoxy samples were characterized. Results showed a significant improvement of toughness, and specifically, impact strength, elongation at break, and toughness were able to reach 76.7 kJ.m(-2), 25.0%, and 7.6 MJ.m(-3), respectively (neat epoxy resin: 21.1 kJ.m(-2), 5.7%, and 3.1 MJ.m(-3)). Besides, by contrast with two other tougheners, which were uneasy to form sacrificial bonds, results indicated sacrificial bonds were critical in the toughening process. Also the toughening effect of TAA is better than that of many commercial tougheners, which reflects its broad potential application.