碳纳米管/聚四氟乙烯复合材料场发射特性研究  

Study on field emission property of CNTs/PTFE composite materials

作　　者：张文锋[1] 曾葆青[1] 赵艳珩[1] 赵约瑟[1] 杨中海[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《功能材料》2006年第7期1118-1120,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(60071022);教育部博士点基金资助项目(20020614008);大功率微波电真空器件技术国防重点实验室基金资助项目(5144004010dz02);四川省青年科技基金前期资助项目(05ZQ026-047)

摘　　要：通过催化热解法制备了碳纳米管,采用机械共混法制作了碳纳米管/聚四氟乙烯复合材料场发射阴极,研究了不同碳纳米管质量分数对复合材料阴极场发射特性的影响,通过制作的封装结构,对比研究了真空环境下碳纳米管/聚四氟乙烯与碳纳米管/环氧树脂复合材料的场发射特性,证明碳纳米管/聚四氟乙烯复合材料更适用于场发射阴极的真空环境中,可以满足场发射显示器件的要求。Carbon nanotubes （CNTs） were produced by catalytic pyrolysis method and CNTs/ PTFE nanocomposites for field-emission cathode was prepared by mechanical mixing method in this paper. The field emission properties with different quality proportion of CNTs in CNTs/PTFE were studied. The field emission properties of CNTs/PTFE and CNTs/EPOXY after encapsulation were compared. It was proved that CNTs/PTFE are more apt to be used in vacuum condition, which satisfies the needs of field emission display device.

关 键 词：碳纳米管 聚四氟乙烯 纳米复合材料 场致发射 环氧树脂 

分 类 号：O462.4[理学—电子物理学]