PRESSURE SENSOR USING PLA PIEZOELECTRIC MATERIAL OF NANOFIBER WEB TYPE OBTAINED BY ELECTROSPINNING

摘要

The present invention relates to a pressure sensor, and more specifically, to a pressure sensor using PLA piezoelectric material of a nanofiber web type obtained by electrospinning, which is made by: forming a folded PLA nanofiber web by folding PLA piezoelectric material, which is realized in the shape of a nanofiber web, which is made by electrospinning poly lactic acid to have piezoelectric characteristics, gas holes, and excellent elasticity recovery rates, for a top unit and another top unit to face each other and for a bottom unit and another bottom unit to face each other; connecting the folded PLA nanofiber web to a flexible parallel electrode unit; causing changes in capacitance due to a changed distance in between the flexible parallel electrode units, which decreases as the gas holes are compressed by pressure, and at the same time changes in the thickness of the PLA nanofiber; and allowing the generation of shear piezoelectric current of PLA′s own for making it possible to measure the pressure. The pressure sensor of the present invention comprises: a folded PLA nanofiber web; a flexible parallel electrode unit; and a signal transmission unit.;COPYRIGHT KIPO 2017