为提高热塑性聚氨酯(TPU)的阻隔及抗静电性能,首先,向功能化改性还原氧化石墨烯(FRGO)中加入原始碳纳米管(CNTs),并通过非共价改性制得在N,N-二甲基甲酰胺(DMF)中均匀分散的杂化粒子FRGO-CNTs;然后,在涂膜机上通过溶液涂覆法制备了FRGO-CNTs/TPU复合材料膜;最后,利用FTIR、XRD、XPS、FE-SEM、TG、氧气透过仪、高阻计及万能试验机对FRGO-CNTs/TPU复合材料膜的结构和性能进行了表征.结果表明:FRGO与CNTs之间通过π-π共轭作用发挥协同效应,并且所制备的FRGO CNTs与TPU基体的相容性较好;当FRGO-CNTs含量(以TPU为基准)为2.0wt％时,复合材料膜的热分解温度提高了49℃,氧气透过率下降了53.7％;大比表面积的FRGO与高长径比的CNTs能在TPU基体中构建导电网络;当FRGO-CNTs含量仅为0.8wt％时,FRGO-CNTs/TPU复合材料膜的体积电阻率就能下降7个数量级.与此同时,随FRGO-CNTs含量的增加,复合材料膜的拉伸强度和断裂伸长率均先上升而后下降.
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