文献类型：期刊文献

英文题名：A hyperbranched polymer from tung oil for the modification of epoxy thermoset with simultaneous improvement in toughness and strength

作者：Xiao, Laihui[1] Liu, Zengshe[2] Li, Nan[3] Li, Shuai[1] Fu, Pan[1] Wang, Yigang[1] Huang, Jinrui[1,4] Chen, Jie[1] Nie, Xiaoan[1]

第一作者：Xiao, Laihui

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

机构：[1]Chinese Acad Forestry, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Key Lab Biomass Energy & Mat Jiangsu Prov,Natl En, Key Lab Chem Engn Forest Prod,Natl Forestry & Gra, 16 Suojin Wucun, Nanjing 210042, Jiangsu, Peoples R China;[2]ARS, USDA, Natl Ctr Agr Utilizat Res, Biooils Res Unit, 1815 N Univ St, Peoria, IL USA;[3]Nanjing Tech Univ, Inst Adv Synth, Sch Chem & Mol Engn, Nanjing 211816, Jiangsu, Peoples R China;[4]Chinese Acad Forestry, Res Inst Forestry New Technol, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2020

卷号：44

期号：39

起止页码：16856-16863

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20204309397612);Scopus(收录号：2-s2.0-85093534634);WOS:【SCI-EXPANDED(收录号:WOS:000579576200018)】；

基金：This work was financially supported by the Innovation and Promotion Project for Forestry Science and Technology of Jiangsu Province (LYKJ[2019]45), the National "Thirteenth Five-Year" Key Research and Development Plan (2017YFD0601304) and the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2018QA002).

语种：英文

外文关键词：Curing - Dendrimers - Drying oils - Gasoline - Gel permeation chromatography - Glass transition - Impact strength - Tensile strength

摘要：In order to increase the toughness of epoxy resin and make full use of biological resources, a tung oil-based hyperbranched polymer (TOHBP) was synthesized. The structure of the TOHBP was determined by FTIR, NMR and gel permeation chromatography (GPC). After TOHBP was incorporated into an epoxy/polyetherdiamine curing system, different analytical studies were carried out to characterize samples of each formation. The results show simultaneous improvement in the impact strength (62.79 kJ m(-2)), tensile strength (73.01 MPa), modulus (3116 MPa) and glass transition temperature (T-g) (86.62 degrees C) compared with neat epoxy resin (20.07 kJ m(-2), 67.97 MPa, 2610 MPa and 81.48 degrees C, respectively). In addition, the significant improvement in impact strength and the simultaneous reinforcement of other properties suggest that TOHBP provides a better toughening and strengthening ability than many other reported oil-based hyperbranched polymers (HBPs) and petroleum-based polymers. The results indicate that this renewable material is a promising modifier, and may provide an alternative to replace petroleum-based materials that increase the toughness of epoxy resins.