为制备性能优异的导电非织造布,扩大非织造布的应用领域,以聚丙烯(PP)为主要原料,通过熔喷纺丝技术制备了PP非织造布,利用多壁碳纳米管(MWCNTs)的溶液进行导电修饰,制备了PP/MWCNTs导电非织造布。通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、绝缘电阻测试仪和热失重分析(TG)研究了PP/MWCNTs导电非织造布的结构及性能。结果表明:MWCNTs均匀分散于PP非织造布中,与纤维间的界面结合力较强;当 MWCNTs浓度为0.2mg/mL时,MWCNTs在PP非织造布中均匀分散形成连续导电网络结构,电阻率显著降低,出现导电逾渗现象;与PP非织造布相比,PP/MWCNTs导电非织造布的结晶度和热稳定性提高。
To prepare conductive nonwovens with excellent properties and enlarge its application field,polypropylene (PP) nonwovens were prepared by melt-blown spinning technique using PP as the raw material,and then modified in the solution of multi-walled carbon nanotubes (MWCNTs) to prepare PP/MWCNTs conductive nonwovens.The structure and properties of PP/MWCNTs nonwovens were investigated by scanning electron microscopy (SEM),X-ray diffraction (XRD),insulation resistance tester and thermogravimetric analysis (TG).The results were as follows:MWCNTs can be uniformly dispersed in PP nonwovens,the strong interaction between PP fibers and MWCNTs was achieved.When the MWCNTs concentration was 0.2mg/mL,a continuous conductive network was formed,leading to decreased resistivity of PP/MWCNTs nonwovens and conductive percolation.The crystallinity and thermal stability of PP/MWCNTs were also improved.
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基金资助
河南省教育厅重点科研项目(19A430010和20B430002)
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