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作 者:樊志敏[1] 郑玉婴[1] 刘先斌[1] 尚鹏博 汪晓莉[1] 陈志杰[1] 周珺[1]
机构地区:[1]福州大学材料科学与工程学院,福州350108
出 处:《复合材料学报》2015年第3期705-711,共7页Acta Materiae Compositae Sinica
基 金:福建省高校产学合作科技重大关键资助项目(2012H6008);福州市科技计划(2013-G-92)
摘 要:为了提高热塑性聚氨酯(TPU)的阻隔性能,首先,采用溶液成型的方法在涂膜机上制备了功能氧化石墨烯(IP-GO)/TPU复合材料薄膜。然后,利用FTIR、XPS、XRD、FE-SEM、原子力显微镜和氧气透过仪对IP-GO/TPU复合材料的形貌和性能进行了表征。结果表明:IP-GO层间距相对原始鳞片石墨的增加了0.696nm,片层的厚度为1.2nm左右。IP-GO以褶皱层状的形式均匀分散在TPU基体中,并且包覆在复合材料薄膜断口表面。当IP-GO含量为3wt%时,IP-GO/TPU复合材料薄膜的氧气透过率为84.325cm3/(m2·d·Pa),相比纯TPU薄膜的280.973cm3/(m2·d·Pa)下降了70%,阻隔性能明显提高。研究解决了TPU薄膜阻隔性能不佳的问题,为高阻隔聚合物的制备提供了一种思路和方法。In order to improve the barrier properties of thermoplastic polyurethane(TPU),first,functional graphene oxide(IP-GO)/TPU composite films were prepared by solution casting method on the coating machine.Then,the morphologies and properties of IP-GO/TPU composite films were investigated by FTIR,XPS,XRD,FE-SEM,atomic force microscope and oxygen transmission rate tester.The results indicate that the layer spacing of IP-GO increases of 0.696 nm compared with the primitive flake graphite and the thickness of sheets is about1.2nm.IP-GO evenly dispersed in TPU matrix by form of fold layers,and coated on the fracture surfaces of composite films.When the contnent of IP-GO is 3wt%,the oxygen transmission rate of IP-GO/TPU composite film is84.325cm3/(m2·d·Pa),compared with the pure TPU film's value which is 280.973cm3/(m2·d·Pa)decreases by 70%,reveals that the barrier property is improved significantly.The research solves the problem of poor barrier performance of TPU films,and provides a thought and a method for the preparation of high barrier polymers.
关 键 词:热塑性聚氨酯 功能氧化石墨烯 氧气透过率 阻隔性 薄膜
分 类 号:TB332[一般工业技术—材料科学与工程]
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