pCBT/MWNTs/CFF复合材料的制备及力学性能研究  

Preparation and mechanical properties of pCBT/MWNTs/CFF composite

作　　者：盛伟伟 苏银河 于俊荣[1] 王彦[1] 诸静[1] 胡祖明[1] Sheng Weiwei;Su Yinhe;Yu Junrong;Wang Yan;Zhu Jing;Hu Zuming(State Key Laboratory jbr Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620)

机构地区：[1]东华大学材料科学与工程学院纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维工业》2018年第4期30-33,共4页China Synthetic Fiber Industry

摘　　要：以环状对苯二甲酸丁二醇酯(CBT)为原料,采用双螺杆挤出机反应挤出与热压复合法制备了碳纳米管/聚环状对苯二甲酸丁二醇酯/碳纤维织物(MWNTs/pCBT/CFF)复合材料,研究了酸化处理前后MWNTs的加入对CBT开环聚合的影响,以及MWNTs对pCBT基体及pCBT/CFF复合材料力学性能的影响。结果表明:MWNTs的加入降低了CBT的聚合速率,增大了pCBT树脂的低黏度加工窗口;酸化处理后的MWNTs对pCBT基体具有更加明显的增强增韧效果,并有助于改善pCBT基体与CFF的界面结合力,显著提高了pCBT/CFF复合材料的力学性能;加入酸化处理后的MWNTs质量分数1%,得到的MWNTs/pCBT/CFF复合材料的层间剪切强度和弯曲强度分别较pCBT/CFF复合材料提高了17.7%和32.7%。A carbon nanotubes/polycyclic butylene terephthalate/carbon fiber fabric （MWNTs/pCBT/CFF） composite was prepared by using cyclic butylene terephthalate（CBT） as raw material via reactive extrusion and hot-pressing composite process on a twin-screw extruder. The effect of the addition of MWNTs on the ring-opening polymerization of CBT was studied before and after acid treatment. The effect of MWNTs on the mechanical properties of pCBT matrix and pCBT/CFF composite was also studied. The results showed that the addition of MWNTs reduced the polymerization rate of CBT and broadened the low-viscosity process ability window of pCBT resin; the acid-treated MWNTs contributed more obvious toughening effect to pCBT matrix and benefited to enhancing the interface adhesion between pCBT matrix and CFF, and thus significantly improved the mechanical properties of pCBT/CFF composite; and as compared with pCBT/CFF composite, the MWNTs/pCBT/CFF composite incorporated with 1% acid-treated MWNTs by mass fraction had the growth of 17.7% and 32.7% for the interlaminar shear strength and bending strength, respectively.

关 键 词：聚环状对苯二甲酸丁二醇酯 碳纳米管 碳纤维织物 复合材料 力学性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]