A hyperbranched polymer from tung oil for the modification of epoxy thermoset with simultaneous improvement in toughness and strength
作者:Laihui Xiao、Zengshe Liu、Nan Li、Shuai Li、Pan Fu、Yigang Wang、Jinrui Huang、Jie Chen、Xiaoan Nie
DOI:10.1039/c9nj06373k
日期:——
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
为了提高环氧树脂的韧性并充分利用生物资源,合成了基于桐油的超支化聚合物(TOHBP)。TOHBP的结构通过FTIR,NMR和凝胶渗透色谱法(GPC)确定。将TOHBP掺入环氧/聚醚二胺固化体系后,进行了各种分析研究以表征每种地层的样品。结果表明,与纯环氧树脂(20.07 kJ)相比,冲击强度(62.79 kJ m -2),拉伸强度(73.01 MPa),模量(3116 MPa)和玻璃化温度(T g)(T g)(86.62°C)同时提高。 m -2,分别为67.97 MPa,2610 MPa和81.48°C)。此外,冲击强度的显着提高以及其他性能的同时增强表明,TOHBP比许多其他已报道的油基超支化聚合物(HBPs)和石油基聚合物具有更好的增韧和增强能力。结果表明,这种可再生材料是一种很有前途的改性剂,并且可以替代石油基材料,从而提高环氧树脂的韧性。