Improved electrical resistance-pressure strain sensitivity of carbon nanotube network/polydimethylsiloxane composite using filtration and transfer process  

作　　者：LU Qiang CAO Hui SONG XiaoHui YAN Han GAN ZhiYing LIU Sheng 

机构地区：[1]School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China [2]Wuhan National Laboratory for Optoelectronics, Wuhan 430074, China [3]Department of Electronic Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China [4]Research Institute of Micro/Nano Science and Technology, Shanghai Jiaotong University, Shanghai 200052, China [5]Department of Mathematics and Physics, wuhan Polytechnic University, Wuhan 430023,China

出　　处：《Chinese Science Bulletin》2010年第3期326-330,共5页

基　　金：supported by the National High-Tech Research & Develop-ment Program of China (Grant No. 2007AA04Z348);China Postdoctoral Science Foundation (Grant No. 20080440139)

摘　　要：The electrical resistance-pressure strain sensitivity of carbon nanotube network (NTN)/polymer composite is investigated. In this research, polydimethylsiloxane (PDMS) is used as the polymer matrix. The composite of NTN embedded in PDMS matrix has been fabricated by using filtration and transfer process. The thickness of NTN/PDMS composite can be controlled. Electrical re- sistance and pressure strain of the NTN/PDMS composite are measured simultaneously. Electrical resistance of NTN/PDMS composite has been obtained as a function of pressure strain. The NTN/PDMS composite exhibits linear change in electrical re- sistance as a result of pressure strain and has improved electrical resistance-pressure strain sensitivity. The NTN/PDMS composite has 90.6% resistance change at 6% pressure strain. The electrical resistance-pressure strain sensitivity of NTN/PDMS composite using filtration and transfer process is 2.13 times of the traditional NTN/PDMS composite. The characteristic in electrical resis- tance change implies that NTN/PDMS composite can be used as pressure strain sensors and applied to sensor systems.The electrical resistance-pressure strain sensitivity of carbon nanotube network （NTN）/polymer composite is investigated. In this research, polydimethylsiloxane （PDMS） is used as the polymer matrix. The composite of NTN embedded in PDMS matrix has been fabricated by using filtration and transfer process. The thickness of NTN/PDMS composite can be controlled. Electrical resistance and pressure strain of the NTN/PDMS composite are measured simultaneously. Electrical resistance of NTN/PDMS composite has been obtained as a function of pressure strain. The NTN/PDMS composite exhibits linear change in electrical resistance as a result of pressure strain and has improved electrical resistance-pressure strain sensitivity. The NTN/PDMS composite has 90.6% resistance change at 6% pressure strain. The electrical resistance-pressure strain sensitivity of NTN/PDMS composite using filtration and transfer process is 2.13 times of the traditional NTN/PDMS composite. The characteristic in electrical resistance change implies that NTN/PDMS composite can be used as pressure strain sensors and applied to sensor systems.

关 键 词：应变灵敏度 聚硅氧烷 应变电阻 传输过程 复合使用 碳纳米管 加压力 过滤 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TN253[自动化与计算机技术—控制科学与工程]