氧化石墨烯/碳纳米管协同改性环氧树脂的制备与性能  

Preparation and Properties of Epoxy Resin Composites Reinforced by Graphene Oxide and Multi Walled Carbon Nanotubes

作　　者：张竞[1] 王洪亮[1] 叶瑞[1] 汤继俊[1] 张娇霞[1] 

机构地区：[1]江苏科技大学材料学院,江苏镇江212003

出　　处：《高分子材料科学与工程》2015年第11期156-160,共5页Polymer Materials Science & Engineering

基　　金：江苏高校优势学科建设工程资助项目(35061101);江苏省高校自然科学研究面上项目(15KJB430010)

摘　　要：先用改进的水热法,经超声剥离制备氧化石墨烯(GO),并采用两相萃取法将制得的GO萃取到环氧树脂基体(EP)中;再用超声分散及热催化反应的方法将羟基化多壁碳纳米管(MWCNTs)分散到甲基六氢苯酐(MHHPA)中,然后将GO/EP复合材料与MWCNTs/MHHPA混合制得GO-MWCNTs/EP复合材料。利用扫描电镜对该复合材料断面形貌进行表征,并进行了力学性能测试及动态力学分析测试。结果表明,复合材料的力学性能和热稳定性较纯环氧明显提高。当GO加入量为0.1%,MWCNTs含量为0.4%时,材料的冲击强度最高,强度值为84.22kJ/m2,提高了137%;拉伸强度提高了48.4%;断裂伸长率增加了97.9%。表明GO-MWCNTs对环氧树脂具有协同增强、增韧的协同效应。Graphene oxide（GO） was prepared from improved expandable graphite by hydrothermal process and ultrasonication. Then, the graphene oxides were extracted to the epoxy resin matrix through two-phase extraction methods. And the multi walled carbon nanotubes （MWCNTs） were spreaded in the MHHPA by the ultrasonic dispersion and the thermal catalytic reaction. The fracture morphologies of the GO-MWCNTs/EP composites were investigated by SEM. And the mechanical properties and DMA were also characterized. The results indicate that the properties of the material are significantly improved both in the mechanical properties and the thermal stability compared with pure epoxy. When the amount of the GO and the MWCNTs is 0.1% and 0.4 % respectively, the impact strength of the composite is maximum. The intensity value is 84.22 kJ/m2, which is increased by 137 %. At the moment, the tensile strength is also increased, as well as the elongation at break. The former is increased by 48.4 % , and the latter is 97.9 %. The above data show that GO-MWCNTs have synergistic enhancement effect and synergistic toughening effect on epoxy resin.

关 键 词：水热法 氧化石墨烯 环氧树脂 复合材料 力学性能 多壁碳纳米管 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]