摘要
采用改进的多元醇水热法制备银纳米线(AgNWs),并以PVDF为基体采用溶液析出共混和热压技术制备AgNWs/PVDF复合材料。利用扫描电子显微镜对AgNWs的形貌和复合材料断面进行表征,发现AgNWs在复合材料中分布均匀。采用阻抗分析仪和四探针测试仪对复合材料的交流电导率和直流电导率进行测试,银纳米线含量越高,AgNWs/PVDF复合材料的电导率也越高,当AgNWs含量为5%(质量分数)时,复合材料电导率就可以到达0.56 S/cm。采用矢量网络分析仪对复合材料的电磁屏蔽性能进行测试,当AgNWs为5%(质量分数)时,复合材料的电磁屏蔽性能到达28 dB,并且随着AgNWs含量的增加,复合材料电磁屏蔽性能也随着提高。
The silver nanowires(AgNWs)are prepared by an improved polyol hydrothermal method.AgNWs/PVDF composites are prepared using solution blending and hot-pressing technology.The morphology of AgNWs and the cross-section of the AgNWs/PVDF composite are characterized by SEM and it is found that the distribution of AgNWs in the composite is relatively uniform.The AC conductivity and DC conductivity of the composite are tested by an impedance analyzer and a four-probe tester.The results show that the higher the AgNWs content,the higher the conductivity.When the AgNWs content is 5wt%,the conductivity of composite can reach 0.56 S/cm.The EMI shielding performance of composite is tested by A vector network analyzer.When AgNWs is 5wt%,the EMI shielding performance of composite reaches 28 dB and with the increase of AgNWs content,the EMI performance of composite is improved.
作者
李志伟
汪建
杨科
李衡峰
LI Zhiwei;WANG Jian;YANG Ke;LI Hengfeng(School of Material Science and Engineering, Central South University, Changsha 410083, China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第1期1014-1019,共6页
Journal of Functional Materials
基金
湖南省自然科学基金项目(2019JJ50818)。
关键词
银纳米线
PVDF
复合材料
电导率
电磁屏蔽
silver nanowires
PVDF
composite
electrical conductivity
electromagnetic shielding
