摘要
以浮动催化化学气相沉积法生长的碳纳米管薄膜为主体,以高密度聚乙烯为修饰材料,采用溶液等温结晶工艺,制备内部为纳米混合杂化串晶结构的碳纳米管/高密度聚乙烯复合薄膜,并探究该结构产生的互锁效应对薄膜性能的影响机理.通过调节该结构的主要参数,即高密度聚乙烯片晶长度与周期距离,实现互锁效应的优化.研究结果表明,碳纳米管/高密度聚乙烯复合薄膜断裂应力为117.69 MPa,应变为52.85%,比原始碳纳米管薄膜提升了40%与270%.这种工艺方法为高性能纳米复合材料的制备提供了可能.
The carbon nanotube(CNT)/high density polyethylene(HDPE)composite film with a nanohybrid shish kebab(NHSK)structure has been fabricated via a solution cooling crystallization process.The influence of the interlocking effect resulted by the NHSK structure on the performance of the composite film has been analyzed.By adjusting the parameters of the NHSK structure,such as the lamellar HDPE crystal length and the interval of the lamellar crystals on the CNT surface,the interlocking effect achieved optimization.As a result,the fabricated composite film has a high ultimate tensile strength of 117.69 MPa and an elongation at break of 52.85%,which are 40%and 270%higher than that of the pristine CNT film.This process paves a new way for fabrication of high performance advanced nanocomposites.
作者
刘佳林
周庚衡
于妍妍
吕卫帮
LIU Jia-lin;ZHOU Geng-heng;YU Yan-yan;Lü Wei-bang(Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Science (CAS),Suzhou 215123,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Nano Technology and Nano Bionics,University of Science and Technology of China,Hefei 230026,China)
出处
《中北大学学报（自然科学版）》
CAS
2019年第3期250-256,共7页
Journal of North University of China(Natural Science Edition)
基金
国家自然科学基金资助项目(11472291)
关键词
碳纳米管
纳米混合串晶
纳米复合材料
力学性能
结晶
carbon nanotube
nanohybrid shish kebab
nanocomposites
mechanical properties
crystallization
