doi:10.12202/j.0476-0301.2020098李秀平^1,,,
刘程^{2, 3},
丁仕强¹,
詹世平¹,
范宇皓¹,
冯诗琪¹
1.大连大学环境与化学工程学院，116622，辽宁大连
2.辽宁省高分子科学与工程重点实验室（大连理工大学），116024，辽宁大连
3.辽宁省高性能树脂工程技术研究中心，116024，辽宁大连
基金项目:辽宁省自然科学基金资助项目 (20170540045)；大连市科技之星资助项目

详细信息

通讯作者:李秀平（1984-），女，讲师，博士. 研究方向：聚合物基纳米复合材料. e-mail: lixp0204@sina.cn

中图分类号:TG156

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出版历程

收稿日期:2020-03-31
网络出版日期:2020-11-03
刊出日期:2020-10-31

Preparation and properties on novel flexible conductive materials with PBI substrate

Xiuping LI^1,,,
Cheng LIU^{2, 3},
Shiqiang DING¹,
Shiping ZHAN¹,
Yuhao FAN¹,
Shiqi FENG¹
1. College of Environmental and Chemical Engineering, Dalian University, 116622, Dalian, Liaoning，China
2. Liaoning Province Key Laboratory of Polymer Materials and Engineers (Dalian University of Technology), 116024, Dalian, Liaoning，China
3. Liaoning Province High Performance Resin Engineering Technology Research Center, 116024, Dalian, Liaoning，China



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摘要
摘要:通过磷酸掺杂的方法增强PBI膜表面的亲水性，使PBI基底与性能优异的银纳米线良好结合。其水接触角由磷酸掺杂前的84°降低到掺杂后的28°，表明其亲水性有显著增强. 通过滴涂的方法在磷酸掺杂PBI膜表面滴涂银纳米线，制备了一系列以PBI为基底的柔性导电材料PA-PBI-Ag. 扫描电镜照片显示，银纳米线在PBI膜表面均匀分布，呈交联网络状，其导电性良好。方块电阻可低至1.2 Ω， 其耐弯曲性良好，弯折1 000次依旧保持良好的导电性. PA-PBI-Ag制备方法简便，性能优良，有良好的应用前景.
关键词:柔性导电材料/
聚苯并咪唑/
亲水性/
导电性/
弯曲性
Abstract:With rapid development of flexible conductive materials, novel flexible conductive materials with better substrate are in great demand. Polybenzimidazoles (PBI) possess excellent comprehensive performance, possibly an optimum substrate for flexible conductive materials. However, the surface of PBI membrane is hydrophobic, hindering attachment of nanowires. This could restrict its application in flexible conductive materials. In this study, hydrophilicity of PBI membrane surface was enhanced with phosphoric acid (PA) doping, as assessed by contact angle measurement before and after doping. Contact angle of PBI membrane decreased from 84° to 28° after PA doping. A series of novel flexible conductive materials with PBI substrates were prepared by dispensing Ag nanowires onto PA doped PBI membrane surface, which were named PA-PBI-Ag. SEM photographs revealed that Ag nanowires were evenly distributed on PBI surface and presented crosslink microstructure, guaranteeing good conductivity of PA-PBI-Ag. Sheet resistance was determined to be 1.2 ohm per square, which remained unchanged after bending 1000 times. PA-PBI-Ag flexible conductive materials can therefore be prepared simply, exhibit good properties, and will have extensive application prospects.
Key words:flexible conductive materials/
polybenzimidazoles ( PBI)/
hydrophily/
conductivity/
bending properties