Humidity Effect on Dynamic Electromechanical Properties of Polyacrylic Dielectric Elastomer: An Experimental Study
| Autor: | Mingliang Zhu, Jianwen Zhao, Yuxi Ding, Yuchen Zuo, Lei Liu, Junshi Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology Dielectric Elastomer 01 natural sciences Article Viscoelasticity law.invention lcsh:QD241-441 viscoelastic creeping Dielectric elastomers lcsh:Organic chemistry law 0103 physical sciences Composite material humidity effect dynamic response 010302 applied physics dielectric elastomer Direct current Humidity General Chemistry 021001 nanoscience & nanotechnology Creep 0210 nano-technology Alternating current |
| Zdroj: | Polymers Volume 13 Issue 5 Polymers, Vol 13, Iss 784, p 784 (2021) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym13050784 |
| Popis: | In this research, by utilizing the Very-High-Bond (VHB) 4905 elastomer, we carry out an experimental examination on the humidity effect on dynamic electromechanical performances of dielectric elastomers, including the dynamic response and viscoelastic creeping. Firstly, we experimentally analyze effects of the pre-stretch, peak voltage, waveform and frequency of the dynamic response of VHB 4905 elastomer under several ambient humidities. In general, the amplitude of dynamic deformation gradually adds up with the increasing humidity. Besides, it is found that the amplitude affected by different parameters shows diverse sensitivity to humidity. Subsequently, effect of humidity on the viscoelastic creeping of VHB 4905 is explored. The results demonstrate that, subject to different ambient humidities, the viscoelastic creeping under Alternating Current (AC) voltage is similar to that under Direct Current (DC) voltage. Furthermore, the equilibrium position of dynamic viscoelastic creep enlarges gradually with the humidity, regardless of voltage waveforms. For the dielectric elastomer with a pre-stretch ratio of 3, when the humidity increases from 20% to 80%, the increase of average equilibrium position of dynamic viscoelastic creep is larger than 1599%. |
| Databáze: | OpenAIRE |
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