Characterization and SPICE Modeling of Passive Electronic Devices at High Frequencies

Marjanovic, Milos; Paunović, Vesna; Danković, Danijel; Prijić, Aneta; Prijić, Z.; Mitić, Vojislav V.

doi:10.2991/978-94-6239-213-7_30

Cited by 1 publication

(2 citation statements)

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“…The bands at 578 and 827

{cm}^{- 1}

are found for the crystalline‐α phase. At 877 and 1148

{cm}^{- 1}

for crystalline β‐phase structure 45,46,56 and the band at 1273

{cm}^{- 1}

is assigned to the crystalline γ‐phase 57 . By increasing in fillers content of PEG and TB, FTIR spectra demonstrated the peak for O–H absorption at 3500 cm −1 is disappeared.…”

Section: Resultsmentioning

confidence: 98%

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Effects of soft and hard fillers on electromechanical properties and performance of polydimethylsiloxane elastomer for actuator applications

Prabhakar

Sahu

2023

J of Applied Polymer Sci

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Desired ratio of relative permittivity and elastic modulus limits the application of silicone rubbers as flexible electromechanical actuators. The relative permittivity can be improved by incorporating varieties of high‐k (high dielectric constant) particles and polymer reagents as plasticizers and crosslinkers into elastomer matrix. The present work investigates the effect of polyethylene glycol (PEG) flakes, as a soft filler, and titanium diborides (TB) particles, as a hard filler, on electromechanical actuation performance of polydimethylsiloxane elastomer for soft actuator. Elastomer composites with various concentrations of fillers are prepared to compare the influences on optical, dielectric, and mechanical properties. Uniform dispersion of fillers is confirmed by field emission scanning electron microscopy, energy dispersive x‐ray spectrometer, and Fourier transform‐infrared spectroscopy analysis. Results show that the elastic modulus and relative permittivity are significantly influenced by filler contents. The elastic modulus increases with lower concentrations of PEG fillers, and at 8 wt%, it becomes comparable to the base material. Soft fillers aid in maintaining low elastic modulus, whereas hard fillers increase electrical breakdown strength as well as dielectric loss with almost equal changes in relative permittivity for both composites. The maximum actuation strain of 30.8% and 26.2% is attained for an in‐house fabricated linear actuator with 8 wt% of PEG and TB particles, respectively.

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