测试导电复合材料直流电阻的四端电极法  

DC four-electrode method for electrical resistance measurement of conductive composites

作　　者：韩宝忠[1] 韩宝国[2] 王艳洁[1] 蒋慧[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院、工程电介质及其应用技术教育部重点实验室,哈尔滨150080 [2]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2010年第10期1677-1680,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金青年科学基金资助项目(50808055);高等学校博士学科点专项科研基金新教师基金资助项目(20070213080);哈尔滨理工大学优秀拔尖创新人才培养计划资助项目

摘　　要：为了探讨基于网状或环状电极的直流四端电极法在导电复合材料电阻测试中应用的可行性,比较了应用于不同基体、不同导电填料的导电复合材料直流电阻测试的两端电极法和四端电极法,提出了网状或环状电极与导电复合材料之间接触电阻的计算方法并进行了验证.研究表明:基于网状或环状电极的直流四端电极法可消除在直流两端电极法测试中存在的电极与导电复合材料之间的接触电阻;电极与导电复合材料之间接触电阻是非欧姆性的,接触电阻的大小与被测导电复合材料自身性质有关,其数值是可求解的.基于网状或环状电极的直流四端电极法适用于测试导电复合材料的电阻.In order to explore the feasibility of applying DC four-electrode method based on embedded gauze or loop electrode in electrical resistance measurement of conductive composites, DC four-electrode method and DC two-electrode method for electrical resistance measurement of composites with different matrices and conductive fillers were compared, and the calculation method of contact resistance between electrode and conductive composites was proposed and verified. Research results show that DC four-electrode method can eliminate contact resistance between electrode and conductive composites, which exists in DC two-electrode method. The contact resistance is non-ohmic and can he calculated, and its value depends on the property of measured conductive composites. DC four-electrode method based on embedded gauze or loop electrode is suitable for electrical resistance measurement of conductive composites.

关 键 词：导电复合材料 四端电极法 两端电极法 网状/环状电极 电阻 

分 类 号：TB34[一般工业技术—材料科学与工程] TB33