以高性能的碳纳米管(CNT)薄膜为骨架,利用超声雾化喷头将环氧树脂(EP)喷涂到CNT薄膜的孔隙中实现CNT/EP复合材料的一体化成型。在复合过程中较好地保留了CNT薄膜的结构完整性,一定程度上解决了其他方法中CNT难分散的问题,简单有效的工艺也更有利于实现复合材料的大规模制备。通过优化树脂含量并采用预拉伸的方式来提升CNT在复合材料中的取向性,成功制备出高取向、高致密性且性能均匀的高性能复合膜,其拉伸强度达到1.9GPa,韧性达到47.7J/cm3。如此高性能的CNT/EP复合材料在多个领域具有重要的应用前景。
Using high-performance carbon nanotube (CNT) film as the skeleton,epoxy resin (EP) was sprayed into the pores of the CNT film by ultrasonic atomizing nozzle to realize the integration of the forming of the composite material.The structural integrity of CNT film was well preserved during the composite process,which addressed the dispersion challenges of CNT commonly encountered with other methods to a certain extent.The simple and effective process was also more conducive to the realization of large-scale preparation of composite materials.By optimizing the resin content and using a pre-stretching method to improve the CNT orientation in the composites,a high-performance composite film with high orientation,high density,and uniform properties was successfully prepared,with a tensile strength of 1.9GPa and a toughness of 47.7J·cm-3.It is suggested that such a high performance composite material is potential for applications in many fields.
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