Effect of the piezoelectric ceramic filler dielectric constant on the piezoelectric properties of PZT-epoxy composites

Khaliq, Jibran; Deutz, Daniella Bayle; Frescas, Jesus Alfonso Caraveo; Vollenberg, P.H.T.; Hoeks, Theo; Zwaag, Sybrand van der; Groen, W.A.

doi:10.1016/j.ceramint.2016.11.108

Cited by 50 publications

(26 citation statements)

References 28 publications

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“…The complete assembly, together with the amplifier and function generator, is shown in Figure 1c. In order to align the particles inside the molten polymer, an electric field of 2 kV/mm at a frequency of 1 kHz was chosen [9,18]. AC electric field was applied at room temperature using a function generator linked to a high voltage amplifier.…”

Section: Methodsmentioning

confidence: 99%

“…As a result of the DEP force, particles (fillers) exert a drag force on the matrix, which depends upon the viscosity and density of the particles [17]. Most of the research on the dielectrophoretic alignment of particles inside polymer matrices has been limited to thermosetting polymers such as polydimethylsiloxane (PDMS) and epoxy [1,18], due to their ease of processing and suitable viscosity for DEP processing [10]. However, only certain types of thermosetting matrices with longer curing times can be used as the curing times plays a vital role in decreasing the viscosity of thermosets, which results in the low degree of alignment.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Khaliq

Hoeks

Groen

2019

JMMP

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In this paper, we present a method to create a highly sensitive piezoelectric quasi 1–3 composite using a thermoplastic material filled with a piezoelectric powder. An up-scalable high-temperature dielectrophoresis (DEP) process is used to manufacture the quasi 1–3 piezoelectric polymer-ceramic composites. For this work, thermoplastic cyclic butylene terephthalate (CBT) is used as a polymer matrix and PZT (lead zirconium titanate) ceramic powder is chosen as the piezoelectric active filler material. At high temperatures, the polymer is melted to provide a liquid medium to align the piezoelectric particles using the DEP process inside the molten matrix. The resulting distribution of aligned particles is frozen upon cooling the composite down to room temperature in as little as 10 min. A maximum piezoelectric voltage sensitivity (g33) value of 54 ± 4 mV·m/N is reported for the composite with 10 vol% PZT, which is twice the value calculated for PZT based ceramics.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Khaliq

Hoeks

Groen

2019

JMMP

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“…From the start the Light.Touch.Matters team identified two technologies with which to experiment: touch responsive piezoelectric plastics (Khaliq et al 2017 ) and flexible organic light emitting diodes (Coenen et al 2015 ). The aim of the Light.Touch.Matters project was to combine these two technologies to produce a material that would light up when touched, but also had the softness and flexibility to be used in a wide variety of design applications.…”

Section: Case Studiesmentioning

confidence: 99%

Materials library collections as tools for interdisciplinary research

Wilkes

Miodownik

2018

Interdisciplinary Science Reviews

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This paper examines how materials libraries are used as tools for interdisciplinary collaboration in 3 research projects that inhabit a disciplinary triangle between materials research, design and user needs: PhysFeel, which explores how materials collections can be used in psychological therapies; Light.Touch.Matters, a design-led project to develop new smart materials; and Hands of X, which uses materials collections to develop a bespoke prosthetics service. The paper analyses and contrasts these case studies to better understand the affordances and limitations of materials collections when used as research, translational and design tools. We conclude that in collaborations between materials researchers, designers and end users, tensions arise as a result of the primacy that each partner gives to creativity, the development of new knowledge and to solving societal problems. The use of a materials library addresses many of these issues but is not a panacea for all the problems associated with interdisciplinary working.

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“…These epoxy resins have been widely used in the field of coatings, adhesives, advanced composites, [7][8][9][10] and are very often used as matrix for piezoelectric reinforcement composites. [11][12][13][14] The most used piezoelectric composites are those with 1-3 or 0-3 connectivity. The 0-3 connectivity composites have the advantage of being easy to implement, allowing mass production at a relatively low cost.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the dynamic molecular and conductivity mechanisms of piezoelectric ceramics Pb[Zr_xTi₁_−x]O₃/epoxy piezocomposites

et al. 2020

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Throughout this work, an experimental and theoretical analysis of the molecular dynamics, correlated with the alternating current conductivity σ ac (ω, T),of unidirectional piezoelectric composites used as actuators and/or sensors in different systems was carried out. The 3D-representation of the imaginary part M 00 (ω, T) of the electric modulus shows, apart from the presence of the classical secondary β and the primary α dipolar relaxation processes, the appearance of a new peak attributed to the Maxwell-Wagner-Sillars (MWS) interfacial polarization whose amplitude depends on the rate of reinforcement. In our case, since we are usually within the range of fragile materials, the stiffness of the 26% fiber content composite is about 4.5 times greater than that of 13.4% (via the fragility parameter D), shows a less pronounced curvature and the nature of the relaxation times is closer to the Arrhenius type. Due to the high dispersion of the conductivity with the frequency of applied electrical field in the range (1-10 4 Hz), Jonscher's "universal power law" has been revised by adding a new term, which takes into account the displacement current density. The ac conductivity adjustment procedure, using the new obtained expression, turns out to be accurate and follows the experimental data reported in the low, high, and even intermediate frequency domains. This theoretical approach allowed us to determine the key parameters (Δε, τ max ,…) unique to each relaxation process, and to demonstrate the MWS interfacial polarization that is directly linked to the adhesion between the PZT fibers and the epoxy resin matrix.

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Effect of the piezoelectric ceramic filler dielectric constant on the piezoelectric properties of PZT-epoxy composites

Cited by 50 publications

References 28 publications

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Materials library collections as tools for interdisciplinary research

Investigation into the dynamic molecular and conductivity mechanisms of piezoelectric ceramics Pb[Zr_xTi₁_−x]O₃/epoxy piezocomposites

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Effect of the piezoelectric ceramic filler dielectric constant on the piezoelectric properties of PZT-epoxy composites

Cited by 50 publications

References 28 publications

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Fabrication of Piezoelectric Composites Using High-Temperature Dielectrophoresis

Materials library collections as tools for interdisciplinary research

Investigation into the dynamic molecular and conductivity mechanisms of piezoelectric ceramics Pb[ZrxTi1−x]O3/epoxy piezocomposites

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Product

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Investigation into the dynamic molecular and conductivity mechanisms of piezoelectric ceramics Pb[Zr_xTi₁_−x]O₃/epoxy piezocomposites