Development of enhanced synthetic rubber for energy efficient polymer actuators

Jung, Kwangmok; Lee, Jonghoon; Cho, M. S.; Koo, Ja Choon; Nam, Jae‐Do; Lee, Y. K.; Choi, Hyouk Ryeol

doi:10.1117/12.658149

Cited by 8 publications

(4 citation statements)

References 2 publications

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“…The overall performance may even be diminished instead of enhancing the electro mechanical response. Elastomer material NBR (acrylonitrile butadiene rubber) has emerged as a promising material comprising a reasonable high dielectric constant of 14 and a significantly higher strength (about 3 MPa) when compared to an acrylic based elastomer (VHB 4910 from 3M) [10], although the stress and strain levels observed for the VHB could not jet be reached by NBR. We investigated a soft thermoplastic elastomer gel [11] for its potential as dielectric elastomer in electromechanical transducers.…”

Section: Resultsmentioning

confidence: 99%

High k dielectric elastomeric materials for low voltage applications

Walder

Molberg

Opris

et al. 2009

Electroactive Polymer Actuators and Devices (EAPAD) 2009

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In principle EAP technology could potentially replace common motion-generating mechanisms in positioning, valve control, pump and sensor applications, where designers are seeking quieter, power efficient devices to replace conventional electrical motors and drive trains. Their use as artificial muscles is of special interest due to their similar properties in terms of stress and strain, energy and power densities or efficiency. A broad application of dielectric elastomer actuators (DEA) is limited by the high voltage necessary to drive such devices. The development of novel elastomers offering better intrinsic electromechanical properties is one way to solve the problem. We prepared composites from cross-linked silicone elastomers or thermoplastic elastomers (TPE) by blending them with organic fillers exhibiting a high dielectric constant. Well characterized monomeric phthalocyanines and modified doped polyaniline (PANI) were used as filler materials. In addition, blends of TPE and an inorganic filler material PZT were characterized as well. We studied the influence of the filler materials onto the mechanical and electromechanical properties of the resulting mixtures. A hundredfold increase of the dielectric constant was already observed for blends of an olefin based thermoplastic elastomer and PANI.

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Section: Resultsmentioning

confidence: 99%

High k dielectric elastomeric materials for low voltage applications

Walder

Molberg

Opris

et al. 2009

Electroactive Polymer Actuators and Devices (EAPAD) 2009

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“…Another method to improve the electromechanical performance of actuators is the application of high prestrain (as large as 300%) on the dielectric elastomer [3]. Such a high prestrain will bring several negative aspects into practical applications that are mainly caused by viscoelastic behavior of DE and complicated designing of the devices [11].…”

Section: Introductionmentioning

confidence: 99%

Disclosed dielectric and electromechanical properties of hydrogenated nitrile–butadiene dielectric elastomer

Yang

Tian

Dong

et al. 2012

Smart Mater. Struct.

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This paper presents a comprehensive study of the effects of acrylonitrile content, crosslink density and plasticization on the dielectric and electromechanical performances of hydrogenated nitrile–butadiene dielectric elastomer. It was found that by increasing the acrylonitrile content of hydrogenated nitrile–butadiene dielectric elastomer, the dielectric constant will be improved accompanied with a sharp decrease of electrical breakdown strength leading to a small actuated strain. At a fixed electric field, a high crosslink density increased the elastic modulus of dielectric elastomer, but it also enhanced the electrical breakdown strength leading to a high actuated strain. Adding a plasticizer into the dielectric elastomer decreased the dielectric constant and electrical breakdown strength slightly, but reduced the elastic modulus sharply, which was beneficial for obtaining a large strain at low electric field from the dielectric elastomer. The largest actuated strain of 22% at an electric field of 30 kV mm−1 without any prestrain was obtained. Moreover, the hydrogenated nitrile–butadiene dielectric actuator showed good history dependence. This proposed material has great potential to be an excellent dielectric elastomer.

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“…Dies ist bei Untersuchungen der "elektrischen Alterung" der Polymere zu beobachten. [21] Viele Materialklassen wurden für DE-Anwendungen untersucht, darunter Acrylate, [4,22] Silicon, [6,11] Urethane, [6,11] Kautschuke, [23,24] Latexkautschuk, [6,11] Acrylnitril-ButadienKautschuk [25] sowie olefinische, [6] fluorierte [26] und Styrolcopolymere. [27,28] Einige der am besten untersuchten Materialen werden in der Folge kurz beschrieben.…”

Section: Grundprinzipien Der Dielektrischen Elastomereunclassified