製備導電奈米碳管紙與碳粉之探討

On the Preparation of Conductive Carbon Nanotube Papers and Toners

陳欣鴻(Chen, Hsin Hung)

指導教授 ： 陳建忠

國立中正大學/工學院/化學工程學系/碩士(2013年)

摘要

本研究的目的是在紙張上製備出奈米碳管(CNT)複合導電薄膜，並探討使用雷射列表機，在紙張上列印出導電圖形的可行性。首先，將CNT、Resin與Wax分散於丙酮中，製備出一均勻的懸浮液。進一步將CNT/Resin/Wax懸浮液乾燥，可獲得CNT/Resin/Wax粉末。分別使用濕式(CNT/Resin/Wax懸浮液)與乾式(CNT/Resin/Wax粉末)兩種方式，在紙張上製備薄膜。由結果得知，使用濕式製備的薄膜，當懸浮液中CNT含量增加，電阻值下降，量測到最好的片電阻值為63.83 Ω/□；使用乾式製備的薄膜，隨著加熱溫度增加，電阻值下降，記錄到最好的片電阻值為601.57 Ω/□。將CNT/Resin/Wax粉末進行研磨並過篩，獲得CNT/Resin/ Wax碳粉。經由列表機列印出來的圖形，片電阻值為643.39 KΩ/□，比經由沉積方式製備的薄膜高出很多倍。以替代方式，結合市售碳粉製備出導電碳粉，與經過各種列印後處理方式製備薄膜。雷射列表機列印薄膜，最好的片電阻值為550 Ω/□，可以與其他文獻數據相媲美。如果能夠更詳細的了解碳粉的製備與雷射列表機的列印結構機制，可以快速提升列印出薄膜電阻值降低的幅度。

關鍵字

雷射列印 ； 可彎曲導電薄膜 ； 奈米碳管

並列摘要

The goal of this study is to prepare the CNT-based conductive thin films on papers and to explore the plausibility of laser printing conductive patterns on papers. Uniform suspension was first prepared by dispersing CNT, resin and wax in acetone. Dry CNT/resin/wax powders were obtained after drying. Wet and dry schemes were respectively used to prepare thin films on papers. It was found that in wet scheme, resistance decreased with the increasing CNT amount in suspension and the best sheet resistance measured was 63.83 Ω/□. On the other hand, in dry scheme, resistance decreased with the increasing heating temperature, despite the best sheet resistance recorded was 601.57 Ω/□. Printer toner was prepared by grinding the CNT/resin/wax powders and followed by screening. Sheet resistance of laser printing pattern was 643.39 KΩ/□, several order higher than the deposited thin films. Alternative approach to prepare toner by combining commercial toner and adoption of various post-printing treatments were carried out. The best sheet resistance of laser printing thin film was 550 Ω/□, which was comparable to the reported data in literature. The reduction of resistance should be readily improved if more detailed understanding of toner and laser-printing mechanism were conducted.

並列關鍵字

laser printing ； flexible and conductive film ； CNT

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