利用溶液涂覆成膜工艺在涂膜机上制得层叠状功能化石墨烯纳米带(SF-GNRs)/热塑性聚氨酯(TPU)复合材料薄膜。采用FTIR、XRD、XPS、TEM和FE-SEM对SF-GNRs的结构进行表征,并结合复合材料薄膜的氧气透过率、体积电阻率测试及表面形貌观察,研究了不同质量分数的 SF-GNRs 对 TPU 复合材料薄膜阻隔和抗静电性能的影响。结果表明：所得高比表面积 SF-GNRs 在 TPU基体中分散良好；当 SF-GNRs 质量分数为1.0%时, SF-GNRs/TPU复合材料薄膜的氧气透过率相比纯TPU薄膜降低了67.76%,阻隔性能得到明显改善；当 SF-GNRs质量分数达到1.0%~1.5%时,SF-GNRs/TPU复合材料薄膜出现了电渗流行为,表现出优良的室温导电性能。
The stack-like functionalized graphene nanoribbons (SF-GNRs)/thermoplastic polyurethane (TPU) composite films were obtained by solution coating film method on a coating machine.FTIR,XRD,XPS,TEM and FE-SEM were used to characterize the structure of SF-GNRs.Meanwhile,by means of oxygen transmission rate, volume resistivity test,and the observation of surface morphology,we studied the effect of SF-GNRs with different mass fractions on the barrier and antistatic properties of TPU composite films.The results show that the SF-GNRs with high surface area are evenly dispersed within TPU matrix.As a result,when the mass fraction of SF-GNRs is 1.0%,the oxygen transmission rate of SF-GNRs/TPU composite films reduces by 67.76%,compared with that of the neat TPU film.Barrier property has obvious improvement.In addition,as SF-GNRs mass fraction reaches to 1.0%-1.5%,SF-GNRs/TPU composite films appear electrical percolation behavior which exhibit the excellent room temperature conductivity.
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