| 引用本文: | 李克伟,谢森培,李康,赵维巍.织物/纸基柔性印刷电子薄膜导电性能研究[J].哈尔滨工业大学学报,2020,52(6):200.DOI:10.11918/202003078 |
| LI Kewei,XIE Senpei,LI Kang,ZHAO Weiwei.Study on conductivity of fabric/paper-based flexible printed electronic films[J].Journal of Harbin Institute of Technology,2020,52(6):200.DOI:10.11918/202003078 |
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| 织物/纸基柔性印刷电子薄膜导电性能研究 |
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李克伟1,2,谢森培1,2,李康1,2,赵维巍1,2
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(1.哈尔滨工业大学(深圳) 柔性印刷电子技术研究中心,广东 深圳 518055; 2.先进焊接与连接国家重点实验室(深圳)(哈尔滨工业大学(深圳)),广东 深圳 518055)
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| 摘要: |
| 为解决织物/纸基表面缺陷多,与导电油墨结合力差等问题,以更具有普适性的方法即采用PVA改性与PVC改性方式和导电银墨水通过涂布法制备了基于织物/纸基的柔性电子薄膜,其方块电阻均小于10 Ω.通过扫描电子显微镜表征了基底原始形貌、中部改性层和表面银颗粒烧结层微观特征,通过四探针表征了随弯折次数、黏结次数和浸水时间增加其方块电阻值的变化规律.弯折10万次、浸水120 h、黏结20次以上,柔性电子薄膜仍表现出优异的导电性能.探究了丝网印刷工艺参数对印刷精度的影响并总结了丝网印刷常见的印刷缺陷.初步探讨了柔性电子薄膜的应用价值,设计并印制了LED阵列电路,建模并仿真分析了印刷线路板表面贴装电阻工作时的温度及应变分布,设计制备了用于葡萄糖检测的丝网印刷电极,印刷电极具有优良的电子传递性能,其对葡萄糖浓度具有较好的检测性能. |
| 关键词: 电子薄膜 柔性 丝网印刷 印制电路 |
| DOI：10.11918/202003078 |
| 分类号:TB301 |
| 文献标识码:A |
| 基金项目:中组部国家级特聘人才青年项目；深圳市科技项目(KQTD20170809110344233,JCYJ20170811160129498) |
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| Study on conductivity of fabric/paper-based flexible printed electronic films |
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LI Kewei1,2,XIE Senpei1,2,LI Kang1,2,ZHAO Weiwei1,2
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(1.Flexible Printed Electronics Technology Center, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, Guangdong, China; 2. State Key Laboratory of Advanced Welding & Joining, Shenzhen (Harbin Institute of Technology, Shenzhen), Shenzhen 518055, Guangdong, China)
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| Abstract: |
| To solve the problems that fabric/paper has many surface defects and poor bonding with conductive ink, a more universal method, i.e., PVA modification and PVC modification, as well as conductive silver ink was adopted to prepare fabric/paper-based flexible electronic films with a sheet resistance of less than 10 Ω. The scanning electron microscope was applied to characterize the original morphology of the substrate, the modified layer in the middle, and the sintered layer of silver particles on the surface. The four-probe tester was used to characterize changes of sheet resistance with increasing bending times, tearing times, and immersion time. The flexible electronic film still showed excellent electrical conductivity after being bent for 100 000 times, immersed for 120 hours, and torn for more than 20 times. Effects of screen printing process parameters on printing accuracy were explored, and common printing defects of screen printing were summarized. The application value of flexible electronic thin films was preliminarily discussed. LED array circuit was designed and printed. Temperature and strain distributions of the printed circuit board surface mount resistor during operation were modeled and simulated. Screen-printed electrode for glucose detection was designed and prepared. Printed electrode has excellent electron transfer performance and better detection performance for glucose detection. |
| Key words: electronic film flexible screen printing printed circuit |
