碳系导电油墨填料的研究进展

导电油墨起源于导电涂料,印刷电子行业的兴起产生了对导电油墨的研发需求。本文综述了碳系导电油墨填料的研究现状、导电机理、应用前景及其发展方向。首先概述了传统碳系导电油墨填料(石墨、炭黑、碳纤维及其混合物)以及新型碳系导电油墨填料(碳纳米管、石墨烯)的研究进展,重点分析了传统碳系填料的研究方向及手段,解释了新型碳系填料应用于导电油墨的优越性。然后从宏观和微观层面概述了当前主流的几种导电机理的基本原理和适用范围,并指出了目前对油墨导电性能的研究只能定性分析而不能定量描述的局限性。最后,重点介绍了两种新型碳系导电油墨填料的最新研究进展和应用方向,特别指出了当前对碳纳米管和石墨烯填料的研究亟需解决的问题,总结了二者今后的研究重点和研究趋势。

Research progress of carbon-based conductive ink fillers

Conductive ink derives from conductive coating,and the rise of printed electronics industry produces demands of research and development for conductive ink. This work reviews the research status,conductive mechanism,application and the development direction of carbon-based conductive ink fillers. Firstly,the research achievements of the traditional carbon-based conductive ink fillers (graphite,carbon black,carbon fiber and its mixtures) and new carbon-based conductive ink fillers (carbon nanotubes and graphene) are summarized. Especially,the research direction and methods of traditional carbon-based fillers are analyzed,and the superiority of new carbon-based fillers is explained. Secondly,the fundamental principles and application scopes of several main conductive mechanisms are summarized from both macro and micro levels. And the limitation of current research methods for ink conductive properties is pointed out,which describe qualitatively rather than evaluate quantitatively. Finally,the achievements and applications of two new carbon-based conductive ink fillers are introduced. Especially,the key technical problems to be solved at present in application of carbon nanotubes and graphene fillers are proposed,and the research focus and tendency in the future are summarized.