Piezoelectric Flexible LCP–PZT Composites for Sensor Applications at Elevated Temperatures

Abstract

In this paper fabrication of piezoelectric ceramicpolymer composites is demonstrated via filament extrusion enabling cost-efficient large-scale production of highly bendable pressure sensors feasible for elevated temperatures. These composites are fabricated by utilizing environmentally resistant and stable liquid crystal polymer matrix (LCP) with addition of lead zirconate titanate (PZT) at loading levels of 30 vol.%. These composites, of approximately 0.99 mm thick and length of > 50 cm, achieved excellent bendability with minimum bending radius of ~6.6 cm. The maximum piezoelectric coefficients d33 and g33 of the composites were > 14 pC/N and > 108 mVm/N at pressure < 10 kPa. In all cases, the piezoelectric charge coefficient (d33) of the composites decreased as a function of pressure. Also, piezoelectric coefficient (d33) further decreased in the case of increased frequency press-release cycle sand pre-stress levels by approximately 37-50 %. However, the obtained results provide tools for fabricating novel piezoelectric sensors in highly efficient way for environments with elevated temperatures.

High‐performance flexible piezoelectric nanogenerator with folded structure based on CNTs‐modified BCβZT/P(VDF‐HFP) composite film

“…Therefore, developing sustainable and environmentally friendly energy sources, such as solar, wind, and hydro, is urgent. [4][5][6][7][8][9] As a new type of intelligent power source, piezoelectric nanogenerators (PENGs) can convert ubiquitous mechanical energy in nature into electrical energy, [10][11][12][13][14] opening new technologies for energy conversion and becoming an important research field. Flexible PENGs have attracted considerable attention and have been widely used in wearable electronic devices, self-powered nanogenerators, wireless nanomedicine, biological devices, and other fields.…”

Multiresponsive 3D Structured PVDF Cube Switches for Security Systems Using Piezoelectric Anisotropy

“…1 Among the various smart materials, piezoelectric materials have attracted significant attention because of their advantages in next-generation electronics. 1,3,5 Piezoelectric materials convert mechanical energy into electrical energy and vice versa; owing to their distinct ability, piezoelectric materials have been used in a variety of applications such as pressure sensors, 6,7 strain sensors, 8−10 actuators, 11,12 energy harvesters, 13−15 among other applications. 16 Piezoelectric materials such as lead zirconate titanate (PZT), barium titanate (BaTiO 3 ), and piezoelectric polymer poly(vinylidene fluoride) (PVDF) have been widely used in previous reports.…”

Multi-responsive 3D Structured PVDF Cube Switch for Security System Using Piezoelectric Anisotropy

“…[1] Among the various smart materials, piezoelectric materials have attracted a great attention because of their advantages. [2][3][4][5] Piezoelectric materials such as lead zirconate titanate (PZT), barium titanate (BaTiO 3 ), and piezoelectric polymer polyvinylidene uoride (PVDF) have been frequently used by scientists and researchers. [6,7] Piezoelectric materials convert mechanical energy into electrical energy and vice versa.…”