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Sensors 2019, 19(8), 1809; https://doi.org/10.3390/s19081809

Effect of Epoxy Resin on the Actuating Performance of Piezoelectric Fiber Composites

1
Beijing Spacecraft System Engineering, Beijing 100094, China
2
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
3
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
*
Authors to whom correspondence should be addressed.
Received: 13 March 2019 / Revised: 12 April 2019 / Accepted: 14 April 2019 / Published: 16 April 2019
(This article belongs to the Section Physical Sensors)
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Abstract

Piezoelectric fiber composites (PFC) have shown excellent performance in the areas of vibration control and deformation control. The viscosity and rigidity of the epoxy resin before and after curing, respectively, were very important factors that affected the performance of PFC. In this paper, Aradite 2020, DP 460, and DP 490 epoxy resins, with the viscosities of 0.15, 25.0, and 250.0 Pa·s, respectively, were employed to encapsulate the piezoelectric fiber composite. The PFC that was packaged with Araldite 2020 had the best free strain of 1420 ppm and tip displacement of 17.8 mm. DP 490 caused the lowest performance of PFC, due to the highest viscosity. When the environmental temperature increased from −40 to +80 °C, the free strain of PFC with Aradite 2020 increased at first and then decreased, reaching a maximum value of 1440 ppm at 30 °C, which was mainly related to the mismatch of the resin/ceramic thermal expansion coefficient. View Full-Text
Keywords: Epoxy resin; viscosity; piezoelectric fiber composites; actuating performance Epoxy resin; viscosity; piezoelectric fiber composites; actuating performance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wang, X.; Yuan, X.; Wu, M.; Gao, F.; Yan, X.; Zhou, K.; Zhang, D. Effect of Epoxy Resin on the Actuating Performance of Piezoelectric Fiber Composites. Sensors 2019, 19, 1809.

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