具方向性(平行)多壁奈米碳管複合材料之電性與動態機械性質研究

The experimental studies of electrical conductivity and dynamic mechanical properties for aligned(parallel) MWCNTs/Epoxy composite

徐志強(Chih-Chiang Hsu)

指導教授 ： 徐澤志

共同指導教授 ： 王明文(M.W. Wang)

元智大學/工程學院/機械工程學系/碩士(2009年)

摘要

奈米碳管目前已被廣泛的應用在各種奈米科技產業之中；主要原因在於具有質量輕、高強度、高韌性、可撓曲、高表面積、高導熱性、導電度佳、化學安定性等優點。當不同含量比率的CNTs，均勻的分佈在複合材料中，除了能強化複合材料的機械性質外，亦能降低摩擦係數及提升抗磨耗性。由於奈米碳管尺寸甚小，一般研究較少討論到奈米碳管於複合材料中分佈之方向性與排列的問題，傳統複合材料製程中較無法將奈米碳管以均勻排列方式置放於基材中。因此本研究將以介電泳的技術，直接操控奈米碳管進行均勻且具有方向性的分佈與排列，最後製作出奈米碳管複合材料。本文最後探討多壁奈米碳管複合材料的電性與動態機械性質。

關鍵字

奈米碳管 ； 介電泳法 ； 電性 ； 動態機械性質

並列摘要

Carbon nanotubes have been widely used in a variety of nano-technology industry.The main reason is its light weight, high strength, high toughness, can be deflection, high surface area, high thermal conductivity, good electrical conductivity, and chemical stability etc. When the ratio of different content of CNTs evenly distributed in the composite material, in addition to enhanced mechanical properties of composite materials (mechanical property) and secondly to reduce the friction coefficient (friction coefficient) and upgrading of anti-wear.Because of the size of carbon nanotubes is minuteness, there is lack of general discussion about the research into carbon nanotubes in composite materials in the distribution of directional (direction) and alignment problems.That’s cause the traditional making process of composite materials can’t use carbon nanotubes with a uniform (uniform alignment) placed in the matrix. Therefore this research will be referred to electrophoresis (DEP) technology to manipulate carbon nanotubes to uniform distribution and alignment directionally.On this base, to get the alignment from the alignment of carbon nanotubes through the calculated by the SEM observation, and then through the relation schema to acquire the effect of electrode gap to carbon nanotubes’s alignment. Finally according to this result to produce the carbon nanotubes composite material. This research mainly to explore the electrical properties of ultimate multi-walled carbon nanotubes in composite,material, mechanical properties and thermal mechanical properties.

並列關鍵字

MWCNTs ； Dlectrophoresis ； Electric property ； Dynamic mechanical propert

參考文獻

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