摘要
以TPU、碳纳米管(CNTs-10)和偶联增容改性剂YY-502B为组分,采用熔融共混制备导电复合材料,研究YY-502B用量对复合材料的拉伸强度、断裂伸长率、撕裂强度和体积电导率的影响。随YY-502B含量增加,复合材料的拉伸强度和撕裂强度呈先增加然后减小变化趋势,断裂伸长率逐渐增加;TPU/CNTs-10共混体系的断面呈现典型韧性断裂特征。YY-502B的加入改善了碳纳米管分散,体积电导率随之增大,添加2%的YY-502B时其体积电导率是未添加时的2.36倍。复合材料的最佳配方为TPU 88%、CNTs-1010%、YY-502B 2%,材料的拉伸强度为23.8MPa、断裂伸长率为316.4%、撕裂强度为23.6N/mm、体积电导率为5.2S/mm。
TPU,CNTs-10 and YY-502B were used as components to prepare conductive composite by melt blending.The eff ects of YY-502B content on the tensile strength,elongation at break,tear strength and bulk conductivity of the composite were studied.With the increase of YY-502B content,the tensile strength and tear strength of the composite increased first and then decreased,and the elongation at break increased gradually.The cross section of TPU/CNTs-10 blends showed typical ductile fracture characteristics.The addition of YY-502B improved the dispersion of carbon nanotubes,and the volume conductivity increased accordingly.When adding 2%YY-502B,the volume conductivity was 2.36 times of that when not added.The best formulation of the composite is TPU 88%,CNTs-1010%,YY-502B 2%.The tensile strength is 23.8MPa,elongation at break is 316.4%,tear strength is 23.6N/mm,and volume conductivity is 5.2S/mm.
作者
孙书情
卓志宁
阳范文
朱盛智
唐国凤
田秀梅
魏悦姿
章喜明
SUN Shu-qing;ZHUO Zhi-ning;YANG Fan-wen;ZHU Sheng-zhi;TANG Guo-feng;TIAN Xiu-mei;WEI Yue-zi;ZHANG Xi-ming(Biomedical Engineering Department,School of Basic Medical Sciences,Guangzhou Medical University,Guangzhou 511436,Guangdong,China)
出处
《合成材料老化与应用》
2020年第6期42-44,共3页
Synthetic Materials Aging and Application
基金
广州医科大学-大学生科技创新项目。
