التفاصيل البيبلوغرافية
| العنوان: |
Investigation to the effects of particulate-polymer fillers on the viscoelastic properties of VHB 4910 elastomer for artificial muscle. |
| المؤلفون: |
Sahu, Dhananjay1 (AUTHOR), Sahu, Raj Kumar1 (AUTHOR) raj.mit.mech@gmail.com |
| المصدر: |
Journal of Polymer Research. Apr2024, Vol. 31 Issue 4, p1-20. 20p. |
| مصطلحات موضوعية: |
*ARTIFICIAL muscles, *CREEP (Materials), *BARIUM titanate, *FLEXIBLE electronics, *POLYURETHANE elastomers, *BIOMEDICAL materials, *ELASTOMERS |
| مستخلص: |
Understanding viscoelastic behavior of dielectric elastomers for artificial muscle application is important to regulate actuation performance, response time, energy density, sensitivity, duty cycle, etc. The performance of elastomers is widely recognized as being influenced by various fillers, including functional particles and poly-reagents. However, the impact of fillers on the viscoelastic properties of VHB 4910 remains to be fully understood. In this work, a new range of particulate-polymer filled VHB elastomers are studied for the effects of barium titanate and Ketjenblack particles dispersed trimethylolpropane trimethylacrylate on viscoelastic properties. This followed characterization of stress-relaxation and creep behavior to realize the time-dependent mechanical performance. Also, the stress-softening and energy dissipation behavior are examined to find the number of cycles required to reach the equilibrium energy state. Viscoelastic properties of elastomer including elastic modulus, toughness, are found to significantly reduced as a result of modified poroelastic effects due to incorporated fillers. The mechanical properties of composites are evidenced to depend on the size of the particulates and the amount of polymer reagent within elastomer. Theoretical analysis comparing deformation, relaxation, and creep mechanisms in biomedical materials validates the potential of modified elastomers for use in soft actuation devices, particularly in the field of artificial muscles. This work may help in recognizing the strategies to tune viscoelastic behavior of microporous elastomers for potential applications in flexible electronics. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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