Physical and Chemical Properties of Dielectric Elastomers

Skov, Anne Ladegaard; Sommer‐Larsen, Peter

doi:10.1016/b978-0-08-047488-5.00003-4

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Elastomers are typically formed by cross-linking either by use of a cross-linker or by irradiation, and the resulting material properties depend greatly on the amount of cross-linker or radiation dose used for the network formation. 6 Elastomers with specific properties can be prepared for any application by careful control of reaction parameters and this makes these materials especially well-suited for applications as actuators.…”

Section: Introductionmentioning

confidence: 99%

Silicone resembling poly (propylene glycol) interpenetrating networks based on no pre-stretch as basis for electrical actuators

et al. 2013

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Elastomers currently used as transducers have not been designed with this specific application in mind and there is therefore a need for new target engineered materials to bring down driving voltages and increase actuator performance. A proposed method of optimization involves the development of new types of interpenetrating polymer networks (IPNs) to be used as dielectric elastomer (DE) transducers. This work demonstrates the use of polypropylene glycol (PPG) as a novel DE material. The IPNs formed were shown to exhibit excellent thermal stability and mechanical properties including lower tendency for viscous dissipation with higher dielectric permittivity compared to state of the art polydimethylsiloxane (PDMS) materials.

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Section: Introductionmentioning

confidence: 99%

Silicone resembling poly (propylene glycol) interpenetrating networks based on no pre-stretch as basis for electrical actuators

et al. 2013

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“…At the molecular level, elastomers are considered highly crosslinked chains ( via chemical or physical crosslinks), composed of long flexible molecules, which are entangled and agglomerate at random, where the irregularities in their geometry prevent crystallization. 3–5 Elastomers have both solid and liquid properties, where their (chemical and/or physical) crosslinks contribute to their elastic behaviour, while the length of their chains contribute to their viscous behaviour. Certain elastomers can be subjected to chemical crosslinking processes (also called curing or vulcanization) to produce rubbers, in which curing agents are used to creating a dense number of crosslink points between the polymer chains.…”

Section: Introductionmentioning

confidence: 99%

Bioelastomers: current state of development

Alonso¹,

Enríquez-Medrano²,

Kumar

et al. 2022

J. Mater. Chem. A

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An Investigation of Structure–Property Relationships in Silicone‐Based Dielectric Electroactive Elastomers by Varying Stoichiometric Imbalance of the Network

Zhang

Dénes

Buchmeiser

2016

Macro Materials & Eng

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Silicone‐based elastomers are promising materials for future dielectric elastomer actuators. To ensure optimum performance and the long‐term reliability of the actuators, it is essential to gain a fundamental understanding of the correlation between the elastomer's network structure and the mechanical and electrical responses of the material. For this purpose, mechanical and electrical tests are performed on a series of silicone elastomer films with different crosslinking densities, which are prepared by changing the stoichiometric imbalance of the network. It is determined that higher cross‐linking density leads to a higher elastic modulus and a longer fatigue lifetime, whereas reduced permittivity is observed because of lower chain mobility. Dielectric breakdown strength is also observed to increase in line with increasing cross‐linking density, and the variations in relation to the measured elastic modulus and permittivity agree well with the Stark–Garton model based on electromechanical instability.

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Physical and Chemical Properties of Dielectric Elastomers

Cited by 3 publications

References 14 publications

Silicone resembling poly (propylene glycol) interpenetrating networks based on no pre-stretch as basis for electrical actuators

Silicone resembling poly (propylene glycol) interpenetrating networks based on no pre-stretch as basis for electrical actuators

Bioelastomers: current state of development

An Investigation of Structure–Property Relationships in Silicone‐Based Dielectric Electroactive Elastomers by Varying Stoichiometric Imbalance of the Network

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