Study on the 3D Printing of Flexible Pressure Sensor by Using Polyurethane Pressure Sensitive Materials and Encapsulated GaInSn Liquid Metal Wires
LIU Tong1, ZHUGE Xiangqun1, LAN Jiaxin2, GENG Jiye2, LUO Zhihong2, LI Yibing2, LUO Kun1,*
1 School of Materials Science and Engineering, Changzhou University, Changzhou 213164,Jiangsu, China 2 College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004,Guangxi, China
Abstract: With the development of wearable devices, flexible pressure sensors have received widespread attention as an important part of wearable devices.In this work, in order to solve the problems of the complex manufacturing process of the flexible pressure sensor and its poor contact under the large deformation, multi-walled carbon nanotubes (MWNTs), mesophase carbon microballs (MCMB) and thermoplastic polyurethane (TPU) were evenly melt blended to prepare flexible pressure sensitive 3D printing materials, pressure sensitive materials and insulating materials were printed into a flexible pressure sensor at one time using melt deposition 3D printing technology, and GaInSn liquid metal was encapsulated in the sensor as a wire. Experiments results show that GaInSn liquid metal and MWNTs/MCMB/TPU pressure sensitive materials are in good contact under large deformation, which can effectively transmit signals, and that the prepared flexible pressure sensor has good pressure sensitive characteristics. At the same time, the 3D printing technology offers a new path for the personalized production of flexible electronics with complex structures in small batches.
刘通, 诸葛祥群, 蓝嘉昕, 耿继业, 罗志虹, 李义兵, 罗鲲. 聚氨酯基压敏材料3D打印结合GaInSn液态金属导线制作柔性压力传感器的研究[J]. 材料导报, 2022, 36(15): 21030297-5.
LIU Tong, ZHUGE Xiangqun, LAN Jiaxin, GENG Jiye, LUO Zhihong, LI Yibing, LUO Kun. Study on the 3D Printing of Flexible Pressure Sensor by Using Polyurethane Pressure Sensitive Materials and Encapsulated GaInSn Liquid Metal Wires. Materials Reports, 2022, 36(15): 21030297-5.
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2022, Vol. 36 
