Preparation of high performance electrospun TPU fiber films piezoresistive sensor with a fabric microstructure by hot-press imprint method
To enhance the device-performance and stability of flexible strain sensor,the graphene(Gr),polyaniline(PANI)and Gr/PANI were loaded on the electrospun thermoplastic polyurethane(TPU)fiber film,respectively.Subsequently,the surface mi-crostructure of a commercial fabric was transferred to the surface of the electrospun TPU fiber film by hot-press imprint method.And a serial of flexible piezoresistive sensors with surface and internal microstructures were assembled.After systematically study-ing the effects of filler types and hot pressing time on the sensor performance,the Gr/PANI-TPU(MGPT)sensor with excellent sensing performance was obtained.Compared to the other sensors,the MGPT sensor has wide response rate range(1-1000 mm·min 1)and high sensitivity of 0.143 kpa 1 under pressure range of 0-6 kPa.It also has fast response time(153 ms)and recovery time(106 ms)and excellent durability(1 000 cycles of loading-unloading),showing good motion monitoring ability in human appli-cations.
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维普
