Space charge characteristics of fullerenol and carbon nanotube doped polyurethane elastomer (PUE) actuators

Kyokane, Jun; Tsujimoto, Naoki; Ishida, Mamoru; Fukuma, Masumi

doi:10.1109/iseim.2005.193391

Cited by 3 publications

(3 citation statements)

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“…In the case of using Al and Au metals are used, bending displacement was quite small when Al was used as a cathode. [7]. It is unlikely to the fact that negative and positive charges were accumulated near the cathode and the anode, respectively, in case of polyethylene terephthalate that does not shows electrostriction.…”

Section: Resultsmentioning

confidence: 98%

Electrode Effects on Polyurethane Soft Actuator

Ohmukai¹,

Kyokane²

2017

WJET

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A polymer soft actuator is under investigation using a poly urethane elastomer film that bends by means of an applied voltage, which is based on the electrostriction. Bending experiments were performed under different metal electrodes deposited the both sides of the film. Even if the thickness of the both electrodes is the same, the metal of the both electrodes is desirable to be the same to bend more. It is suggested that the balance of the physical properties of the both metal is critical for larger bending.

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Section: Resultsmentioning

confidence: 98%

Electrode Effects on Polyurethane Soft Actuator

Ohmukai¹,

Kyokane²

2017

WJET

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“…This can be attributed to the fact that some carriers are trapped in deep traps (these traps affect the charge transfer in the interface region [ 75 ]) and space charge is gradually accumulated in the electrode region, resulting in limited charge carrier injection [ 76 , 77 , 78 ]. This situation then results in a dynamic equilibrium of the system reflected in a stable electric field, resulting in a lower conductivity of the whole system.…”

Section: Resultsmentioning

confidence: 99%

A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles

et al. 2023

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Recently, polyurethanes (PURs) have become a very promising group of materials with considerable utilization and innovation potential. This work presents a comprehensive analysis of the changes in material properties important for PUR applications in the electrical industry due to the incorporation of magnesium oxide (MgO) nanoparticles at different weight ratios. From the results of the investigations carried out, it is evident that the incorporation of MgO improves the volume (by up to +0.5 order of magnitude) and surface (+1 order of magnitude) resistivities, reduces the dielectric losses at higher temperatures (−62%), improves the thermal stability of the material, and slows the decomposition reaction of polyurethane at specific temperatures (+30 °C). In contrast, the incorporation of MgO results in a slight decrease in the dielectric strength (−15%) and a significant decrease in the mechanical strength (−37%).

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“…(cf. In a recent report by Kyokane et al, 23) the peak position in a carbon-nanotube-doped PU film obviously shifted from that in the PET film for some unknown reason. This might be an experimental artifact.…”

Section: A Few Preliminary Notes On the Space Charge Measurementsmentioning

confidence: 90%

Model for the Mechanism of the Bending Electrostriction in a Polyurethane Film

Watanabe¹

2007

jjap

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Because a polyurethane film can be bent by applying an electric field, it may be used as a polymer actuator. Although this bending phenomenon is called bending electrostriction, its mechanism has not been fully clarified. In this study, a model was developed in which the origin of the bending was assumed to be the electrostatic attraction between the induced charge on the electrode and the space charge in the film. On the basis of this model, the magnitude of the bending was estimated. The dependence of the estimated magnitude on the electric field, or on the film thickness, was similar to that of actual measurements. However, the estimated magnitude was somewhat greater than the measured magnitude. This difference could be attributed to the constraint imposed by the gold coating used as the electrode.

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Space charge characteristics of fullerenol and carbon nanotube doped polyurethane elastomer (PUE) actuators

Cited by 3 publications

References 1 publication

Electrode Effects on Polyurethane Soft Actuator

Electrode Effects on Polyurethane Soft Actuator

A Comprehensive Study of Polyurethane Potting Compounds Doped with Magnesium Oxide Nanoparticles

Model for the Mechanism of the Bending Electrostriction in a Polyurethane Film

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