二次电子发射特性与固体材料摩擦起电的关系  

Relationship Between Secondary Electron Emission Characteristic and Triboelectrification of Solid Materials

作　　者：常天海[1] 马威[1] 常建[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2011年第12期90-93,共4页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金科学部主任基金资助项目(51047002)

摘　　要：为了探索二次电子发射特性与固体材料摩擦起电的关系,参考了国内外有关标准和资料公布的静电序列,重点考虑固体材料的二次电子发射特性,选取位于静电序列靠后位置的聚四氟乙烯、高密度聚乙烯(HDPE)、聚丙烯(PP)、聚氯乙烯(PVC)和A3碳钢等固体材料,进行了摩擦起电实验,从摩擦速度、摩擦力与静电起电过程中原入射粒子能量的关联方面,分析了固体材料在与A3碳钢摩擦后,其表面静电电位有时为正值的现象.实验结果表明,该现象正是由于固体材料本身的二次电子发射特性所造成的,说明了二次电子发射特性与固体材料静电起电过程之间较强的关联效应.In order to reveal the relationship between the secondary electron emission characteristic and the triboelectrification of solid materials,the electrostatic list regulated by some related standards or reported by the literature both at home and abroad was taken into consideration,and several solid materials located at the end of the electrostatic list,namely,polytetrafluoroethene,high-density polyethylene(HDPE),polypropylene(PP),polyvinyl chloride polymer(PVC) and A3 carbon steel,were selected to carry out triboelectrification experiments.By focusing the secondary electron emission characteristics of the solid materials,the relationship between the primary incident energy and the rubbing speed as well as the friction force during the electrostatic electrification was revealed,and the occurrence of positive surface electrostatic potential after the rubbing of solid materials with A3 carbon steel was analyzed.Experimental results indicate that the positive surface electrostatic potential results from the secondary electron emission characteristic of solid materials,which means that there exists a strong correlation between the secondary electron emission characteristic and the electrostatic electrification process of solid materials.

关 键 词：固体材料 二次电子发射 摩擦 静电起电 

分 类 号：O441[理学—电磁学] TN104[理学—物理]