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Fabrication of carbon nanotube Buckypaper by spray-vacuum filtration method and its strain and temperature sensing properties
Received date: 2014-09-11
Revised date: 2014-10-30
Online published: 2014-11-19
Supported by
Defense Industrial Technology Development Program of China (A35201106); Aeronautical Science Foundation of China (2013ZA54012); Program of the Education Department of Liaoning Province (L2013074)
Carbon nanotube Buckypaper can be used as strain sensor for the monitoring of strain injury in structure and also can be used as temperature sensor to monitor the temperature change of environment. Buckypaper is fabricated with monodispersion solution of multi-walled carbon nanotubes through spray-vacuum filtration method. The morphology and mean pore size are characterized by field-emission scanning electron microscope and nitrogen adsorption-desorption. The response and sensitivity to strain and temperature of carbon nanotube Buckypaper are investigated. The results indicate that Buckypaper has a very high strain sensitivity in the strain range of 0-55 000 με with gauge factor of 10.21 (0-39 000 με) and 524.79 (39 000-55 000 με). After annealing treatment, temperature coefficient of resistance of carbon nanotube Buckypaper is -6.57%/℃ (20-100 ℃) and -3.25%/℃ (100-200 ℃) in heating stage and -5.79%/℃ (20-100 ℃) and -2.88%/℃ (100-200 ℃) in cooling stage with an excellent reversibility and repetition.
LU Shaowei , FENG Chunlin , NIE Peng , WANG Xiaoqiang , XIONG Xuhai , LYU Wei . Fabrication of carbon nanotube Buckypaper by spray-vacuum filtration method and its strain and temperature sensing properties[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(9) : 3187 -3194 . DOI: 10.7527/S1000-6893.2014.0307
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