中文摘要：

通过溶液共混法制备了氧化石墨烯（GO）分散均匀的聚氯乙烯（PVC）／GO纳米复合薄膜，研究了薄膜的力学性能和热稳定性能．结果表明，微量GO能大幅度提高PVC的模量和拉伸强度，且保持较高的断裂伸长率。在PVC中添加质量分数为0．12％的GO，PVC的拉伸强度提高63％，杨氏模量提高20％；添加量为0．60％时，PVC的拉伸强度提高125％，杨氏模量提高126％．添加G0还能提高PVC的起始分解温度、最大分解温度以及PVC的成碳量。GO片层具有较高的强度和模量、GO在高分子基体内的均匀分散、GO和PVC之间较强的相互作用、GO与PVC的层状结构，是其力学性能提高的主要原因。

英文摘要：

The poly（vinyl chloride） （PVC）/graphene oxide sheets （GO） nanofilms with GO well dispersion were prepared by a solution mixing method. The mechanical and thermal properties of these films were investigated. The results show that the Young＇s modulus and the tensile strength of PVC are obviously improved and the high strain at break of PVC is maintained by adding small amount of GO. The tensile strength of PVC has 63% enhancement and the Young＇s modulus has 20% enhancement when adding 0.12wt% GO, and the tensile strength increase 125% and the Young＇s modulus increase 126% for PVC with 0.6wt% GO. Furthermore, the start decomposition temperature, the maximal decomposition temperature and the char amount of PVC increase in the presence of GO. The higher strength and modulus of GO sheet layer, homodisperse of GO in the PVC matrix, stronger interaction between GO and PVC, layer structure of GO and PVC, result in increase of mechanical propertyies.