碳纳米管宏观管状连续体的形成及应用基础研究

项目名称： 碳纳米管宏观管状连续体的形成及应用基础研究

项目编号： No.51202095

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机非金属材料学科

项目作者： 吴子平

作者单位： 江西理工大学

项目金额： 25万元

中文摘要： 近年来，随着应用研究的不断深入和较多高技术领域，如航空航天、太阳能发电、电磁屏蔽及吸波等对微观有序的宏观碳纳米管（CNTs）纤维、膜或块体需求的呼声日益高涨。现有方法制备的CNTs一般呈粉末或团絮状，难以组装有序结构而使CNTs应用大为受限。本项目基于一种全新的微观有序、石墨化高且超薄的CNTs宏观结构-管状连续体，提出了一种微观结构可控、宏观尺寸可调的直接制备结构有序CNTs连续纤维、膜（平方米级）或块体（数十立方分米级）的方法，实现该法组装有序宏观结构的关键在于制备管状连续体。研究拟通过对反应器、温度场、气流场、生长调节剂等的控制，得出系统中CNTs气凝胶的形成、形成后以管壁为模板固化及吹出连续体的机理；通过对在大气中能稳定存在的连续体表面/界面及在不同约束条件下收缩行为的研究，掌握其组装机制及组装后连续体与组装体的性能变化，从而为有序宏观CNTs纤维、膜或块体的工业化应用奠定基础。

中文关键词： 碳纳米管；组装体；电磁屏蔽；电弧；可折叠电池

英文摘要： Carbon nanotubes (CNTs) fabricated by available methods are frequently in powder or flocculent form and difficult to assemble as an ordered structure. These conditions limit the application of CNTs. However, highly aligned macro-CNT fibers, films, and bulk structures are demanded in various high-technology fields, including aeronautics & astronautics, solar energy power generation, electromagnetic interference shielding or wave absorbing. This project proposes a method featured with a controllable microstructure, adjustable macro size and high graphitic structure to prepare ordered CNT fiber (continuous), film (greater than 2 × m2), or bulk structure (greater than 20 dm3) directly. The key point to realize the assembly using the proposed method is to prepare a continuous CNT macrotube. In this study, the formation process of CNT aerogel, the solidfication mechanism of the aerogel and the formation mechanism of the macrotube are going to be investigated through studying the reaction reactor, temperature field, gas stream field, growth mediator and others factors. Moreover, the assembly mechanism and performance changes occurring before and after the assembly will be evaluated by investigating the surface/interface and shrinkage under different constraints of the macrotube that steadily existing in the atmospher

英文关键词： Carbon nanotube；assembly；Electromagnetic interference shielding；Electric Arc；Foldable battery