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采用改进Hummer法制备了氧化石墨烯,并由氧化石墨烯制备了还原氧化石墨烯(RGO),将其添加到热塑性聚氨酯(PU)纺丝液中,用静电纺丝法制备了RGO/PU纳米复合纤维。讨论了纺丝电压对纤维的影响,考察了复合纤维膜的形貌、导电性能和力学性能。结果表明,纺丝电压为23~28 k V时有明显的泰勒锥;在PU中添加质量分数为0.50%的RGO可以明显提高复合纤维的导电性能;加入RGO后PU纤维拉伸强度和断裂伸长率提升明显。
The modified Hummer method was used to prepare the graphene oxide and the graphene oxide (RGO) was prepared from the graphene oxide and added to the thermoplastic polyurethane (PU) spinning solution. The RGO / PU nanocomposites were prepared by electrospinning Composite fiber. The influence of spinning voltage on the fiber was discussed. The morphology, electrical conductivity and mechanical properties of the composite fiber membrane were investigated. The results showed that there was a clear Tyler cone at a spinning voltage of 23 ~ 28 kV. The addition of RGO with 0.50 wt% PU could obviously improve the electrical conductivity of the composite fibers. The tensile strength and elongation at break Significant increase in length.