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Dissipation factor of acrylic dielectric elastomer--an experimental study
Journal of Nanoscience and Nanotechnology
|May 7, 2015
Summary
This study investigated how pre-strain, frequency, and electrode type affect the dielectric properties of VHB acrylic elastomer. Results show these factors significantly influence the dissipation factor and electrical efficiency of VHB materials.
Area of Science:
- Materials Science
- Polymer Science
- Electrical Engineering
Background:
- Acrylic elastomers like VHB 4910 are widely used due to their unique properties.
- Understanding their dielectric behavior under mechanical and electrical stress is crucial for advanced applications.
Purpose of the Study:
- To analyze the impact of biaxial pre-strain, frequency, and electrode material on the dielectric dissipation factor of VHB 4910.
- To evaluate the electrical efficiency of VHB samples under varying experimental conditions.
Main Methods:
- VHB 4910 films were biaxially pre-stretched using a custom device.
- Samples were prepared with copper tape, silver grease, or carbon grease electrodes.
- The dissipation factor was measured using an LCR meter up to 1 MHz.
Main Results:
- The dissipation factor of VHB 4910 varies significantly with pre-strain levels.
- Frequency and electrode type also demonstrably alter the dielectric dissipation factor.
- Electrical efficiency was estimated based on measured dissipation factor values.
Conclusions:
- Pre-strain, frequency, and electrode choice are critical parameters influencing VHB elastomer's dielectric performance.
- These findings are vital for optimizing VHB-based devices in various electronic applications.
- The study provides a basis for material selection and design in dielectric elastomer technology.
