AG-80环氧树脂增韧改性及其在碳纤维复合材料中的应用  

Toughening of AG-80 epoxy resin and its application in carbon fiber composites

作　　者：陈勇 谭晓明 熊航行[1] 杨永恒 吴喜兵 龚昌景 陈姝敏 吴凡 丁鹏 万力 朱琼 CHEN Yong;TAN Xiao-ming;XIONG Hang-xing;YANG Yong-heng;WU Xi-bing;GONG Chang-jing;CHEN Shu-min;WU Fan;DING Peng;WAN Li;ZHU Qiong(College of Chemical Engineering and Pharmacy,Jingchu University of Technology,Jingmen,Hubei 448000,China;Jingmen Green Chemical Technology Research Institute,Jingmen,Hubei 448000,China;Hubei BenxinEnvironmental Protection Technologies Inc.,Wuhan,Hubei 430074,China)

机构地区：[1]荆楚理工学院化工与药学院,湖北荆门448000 [2]荆门化工绿色技术研究院,湖北荆门448000 [3]湖北本心环保科技股份有限公司,湖北武汉430074

出　　处：《粘接》2018年第11期17-23,共7页Adhesion

基　　金：荆楚理工学院引进人才启动项目QDB201604;荆楚理工学院大学生创新创业训练项目KC2016012和KC2017010;湖北省教育厅科学研究计划指导性项目B2017250;荆门市科技计划项目2018YFB048;湖北省大学生创新创业训练项目201611336016和201711336006

摘　　要：采用E-44、LNBR、SiO和KH-570分别对AG-80/DMDC环氧体系进行增韧改性,研究了2增韧环氧树脂体系的力学性能和在不同pH条件下的吸水性能。结果表明,当E-44、LNBR、SiO和KH-570用量分别为50.0%、10.0%、3.0%、2.0%时,复合材料的拉伸强度、弯曲强度和2弯曲模量分别为73.4 MPa、84.0 MPa、1.5 GPa。该增韧环氧树脂体系在中性和碱性条件下,具有较好的耐水性能。进一步以AG-80增韧改性体系作为基材,采用KH-570对碳纤维布进行改性,并利用拉力试验机,红外光谱仪和偏光显微镜对碳纤维复合材料进行表征。结果表明,改性碳纤维复合材料的拉伸强度、弯曲强度和弯曲模量分别为114.7 MPa、192.5 MPa和7.6GPa,比未改性前分别提高了26.3%、41.9%和40.7%,界面性能得到了明显改善。Using the bisphenol A epoxy resin （E-44）, liquid nitrile-butadiene rubber （LNBR）, nano-silica （SiO ） 2and silane coupling agent （KH-570） the AG 80/DMDC epoxy resin system was toughened . The mechanical properties andwater absorption properties at different pH values for the toughened epoxy resin system were studied. The results showedthat the tensile strength, bending strength and bending modulus of the composites were 73.4 MPa, 84.0 MPa and 1.5 GParespectively when the contents of E-44, LNBR, SiO and KH-570 were 50.0%, 10.0%, 3.0% and 2.0% respectively. The 2toughened epoxy resin system had good water resistance under neutral and alkaline conditions. Carbon fiber cloth wasfurther modified with KH-570 and the toughening modified AG-80 epoxy resin system was used as the substrate, thecarbon fiber composites were characterized by tensile testing machine, infrared spectrometer and polarizing microscope.The results showed that the tensile strength, bending strength and bending modulus of the modified carbon fiber compositeswere 114.7 MPa, 192.5 MPa and 7.6 GPa respectively, which were 26.3%, 41.9% and 40.7% higher than those of theunmodified ones. The interfacial properties of the modified carbon fiber composites were obviously improved.

关 键 词：耐高温 高韧性 AG-80 环氧树脂 碳纤维复合材料 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]