A poling study of lead zirconate titanate∕polyurethane 0–3 composites

Lau, Sing; Kwok, Kin Wing; Shin, Franklin G.; Kopf, S.

doi:10.1063/1.2767614

Cited by 14 publications

(13 citation statements)

References 16 publications

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“…This will result in the shifting of S z (E), [70][71][72] and in the hysteresis of the polarizationfield curve. 73 For realizing the precise role of the trapped charges, a more sophisticated model should be used, which is not the scope of this work.…”

Section: Simulation Model For Compositesmentioning

confidence: 99%

A simulation study of the electrostriction effects in dielectric elastomer composites containing polarizable inclusions with different spatial distributions

Allahyarov

Löwen

Zhu

2015

Phys. Chem. Chem. Phys.

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Controlled actuation of electroactive polymers with embedded high dielectric nanoparticles is theoretically analyzed. If the inclusions are placed randomly in the elastomer body, the composite always contracts along the direction of the applied field. For a simple cubic distribution of inclusions, contraction occurs if the applied field is directed along the [001] direction of the lattice. For inclusions occupying the sites of other lattice structures such as body-centered or face-centered cubic crystals, the composite elongates along the field direction if it is applied along the [001] direction. The stability of the elongation against the imperfectness of the lattice site positions and the distortion ratio of the initial structures are examined. Finite elongation windows show up for the initially distorted body-centered cubic and face-centered cubic crystals as a function of the distortion ratio of the initial structure. The existence of these elongation windows are also predicted from the analysis of the electrostatic energy of the distorted body-centered cubic and face-centered cubic lattice structures. Our results indicate that the electrostriction effect, which is the main contribution to the actuation of low aspect-ratio composites, strongly depends on the geometry of the spatial distribution of nanoparticles, and can thereby largely be tuned.

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Section: Simulation Model For Compositesmentioning

confidence: 99%

A simulation study of the electrostriction effects in dielectric elastomer composites containing polarizable inclusions with different spatial distributions

Allahyarov

Löwen

Zhu

2015

Phys. Chem. Chem. Phys.

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“…Enhancing the alignment quality by means of decreasing the interparticle distance has been shown to significantly improve the dielectric, piezoelectric and pyroelectric properties of particulate composites ( van den Ende, 2012 ; Khanbareh et al, 2014 ). In conventional biphase ferroelectric ceramic-polymer composites, the polymer phase normally have a lower permittivity and a low conductivity compared to the ceramic particles; thus a high AC field at elevated temperatures for a long period of time is required for efficient poling ( Kwok et al, 2007 ; Lau et al, 2007 ). Thus the poling process as well as the resulting effective properties of the composites remain a challenge for the manufacturers.…”

Section: Introductionmentioning

confidence: 99%

In-situ poling and structurization of piezoelectric particulate composites

Khanbareh

Zwaag

Groen

2017

Journal of Intelligent Material Systems and Structures

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Composites of lead zirconate titanate particles in an epoxy matrix are prepared in the form of 0–3 and quasi 1–3 with different ceramic volume contents from 10% to 50%. Two different processing routes are tested. Firstly a conventional dielectrophoretic structuring is used to induce a chain-like particle configuration, followed by curing the matrix and poling at a high temperature and under a high voltage. Secondly a simultaneous combination of dielectrophoresis and poling is applied at room temperature while the polymer is in the liquid state followed by subsequent curing. This new processing route is practiced in an uncured thermoset system while the polymer matrix still possess a relatively high electrical conductivity. Composites with different degrees of alignment are produced by altering the magnitude of the applied electric field. A significant improvement in piezoelectric properties of quasi 1–3 composites can be achieved by a combination of dielectrophoretic alignment of the ceramic particles and poling process. It has been observed that the degree of structuring as well as the functional properties of the in-situ structured and poled composites enhance significantly compared to those of the conventionally manufactured structured composites. Improving the alignment quality enhances the piezoelectric properties of the particulate composites.

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“…The composites obtained by blending oxide FE particles into elastomers encounter extremely challenging poling problems ( 22 – 25 ). Indeed, in these composites, the FE domains of each oxide particle are orientated randomly, which requires effective poling ( 22 , 23 ). However, as the electric field mainly partitions in the low-conductive elastomer phase, a very high poling field for the oxide FE particles is needed at the high risk of dielectric and electromechanical breakdown of the composites ( 24 , 25 ).…”

mentioning

confidence: 99%

“…Samples fabricated by structural engineering only enable a limited stretching range (less than the prestrained value) (21); they often require complicated fabrication techniques and show reduced device densities within an array (4,21). The composites obtained by blending oxide FE particles into elastomers encounter extremely challenging poling problems (22)(23)(24)(25). Indeed, in these composites, the FE domains of each oxide particle are orientated randomly, which requires effective poling (22,23).…”

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confidence: 99%

Intrinsically elastic polymer ferroelectric by precise slight cross-linking

Gao

Wang

et al. 2023

Science

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Ferroelectrics are an integral component of the modern world and are of importance in electrics, electronics, and biomedicine. However, their usage in emerging wearable electronics is limited by inelastic deformation. We developed intrinsically elastic ferroelectrics by combining ferroelectric response and elastic resilience into one material by slight cross-linking of plastic ferroelectric polymers. The precise slight cross-linking can realize the complex balance between crystallinity and resilience. Thus, we obtained an elastic ferroelectric with a stable ferroelectric response under mechanical deformation up to 70% strain. This elastic ferroelectric exerts potentials in applications related to wearable electronics, such as elastic ferroelectric sensors, information storage, and energy transduction.

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A poling study of lead zirconate titanate∕polyurethane 0–3 composites

Cited by 14 publications

References 16 publications

A simulation study of the electrostriction effects in dielectric elastomer composites containing polarizable inclusions with different spatial distributions

A simulation study of the electrostriction effects in dielectric elastomer composites containing polarizable inclusions with different spatial distributions

In-situ poling and structurization of piezoelectric particulate composites

Intrinsically elastic polymer ferroelectric by precise slight cross-linking

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