1-3 Castor Oil-Based Polyurethane/PZT Piezoelectric Composite as a Possible Candidate for Structural Health Monitoring

Abstract

In this study, we obtained and characterized a piezoelectric composite with 1-3 connectivity from castor oil polyurethane (PUR) and lead zirconate titanate (PZT) rods. Two samples were obtained, one with 15% PZT volume and the other with 34% PZT volume. The ac electrical properties of the 1-3 piezoelectric composite samples demonstrated the frequency-dependence behavior of disordered solids. The piezoelectric coefficient (d 33) was greatly influenced by the number of PZT rods and the matrix curing process. The sample with 34% PZT volume showed a higher d 33 value, (246 pC/N measured after 30 d of polarization). The composites were evaluated for use in acoustic emission wave sensors for application in structural health monitoring.

A critical review: the impact of electrical poling on the longitudinal piezoelectric strain coefficient

“…303 Similarly, Costa et al successfully developed a cost-effective castor-oil-based 1–3 connectivity polyurethane–PZT composite (PUR-PZT) having a d 33 value of 246 pC N −1 from optimized poling conditions of 10 kV cm −1 at 100 °C for 60 min, which can be implemented as an acoustic emission (AE) wave sensor in healthcare systems. 113 Chen et al fabricated a soft PZT nanofibre–PENG with dimensions of around 60 nm and 500 μm using poling conditions of 40 kV cm −1 , at a poling temperature greater than 140 °C for about 24 h. PZT fibres were positioned over fine platinum electrodes of the integrated structure placed on a silicon substrate. The voltage and power output performance of the fully assembled setup was 1.63 V and 0.03 W, respectively.…”

Evaluation of Piezoresistive and Electrical Properties of Conductive Nanocomposite Based on Castor-Oil Polyurethane Filled with MWCNT and Carbon Black

“…Materials obtained from renewable and sustainable sources, such as bio-based and natural polymers, have attracted considerable interest in recent decades. These include natural rubber [1], cellulose [2], polypropylene based on cane alcohol [3], and polyurethane based on castor oil (PUR) [4].…”