Effect of Diatomaceous Biosilica and Talc on the Properties of Dielectric Elastomer Based Composites

Abstract

Currently, scientists are still looking for new polymeric materials characterized by improved mechanical, thermal as well as dielectric properties. Moreover, it should be stressed that new composites should be environmentally friendly. For this reason, the aim of this work is to establish the influence of natural fillers in the form of diatomaceous biosilica (B) and talc (T) on the properties of dielectric elastomer (DE)-based composites. The dielectric elastomer-based materials have been tested taking into account their morphology, thermal and mechanical properties. Moreover, the dielectric constant of the obtained materials was evaluated. Obtained results revealed that the presence of both diatomaceous biosilica and talc significantly increases dielectric properties while having no significant effect on the mechanical properties of the obtained composites. It should be stressed that the performed analyses constitute a valuable source of knowledge on the effective modification of the thermal and dielectric properties of newly obtained materials.

Effects of metal oxides on the dielectric and mechanical properties of silicone rubber composites

“…As the frequency rises, the electric field applied for a short period of time is insufficient to cause polarization to the dipoles. Charge redistribution causes decreased interfacial polarization, reduced charge accumulation, and a lower ε ', resulting in fascinating phenomena in the dielectric loss of the composites 29,30 …”

“…Charge redistribution causes decreased interfacial polarization, reduced charge accumulation, and a lower ε', resulting in fascinating phenomena in the dielectric loss of the composites. 29,30 As shown in Figure 3b, the dielectric loss tangent (tan δ) of the composites with Nb 2 O 5 and Fe 2 O 3 added has an obvious maximum value in the test frequency range, which comes from the polarization mechanism at the interfaces. 31 Furthermore, this process is also associated with various defects in the matrix.…”

Comparison of How Graphite and Shungite Affect Thermal, Mechanical, and Dielectric Properties of Dielectric Elastomer-Based Composites

“…The roughness parameters were square (R q ) and arithmetical mean deviation of the assessed profile (R a ) as well as (R max ) calculated using Nanoscope software (Veeco Metrology, Inc., Santa Barbara, CA, USA). The definition as well as the equations describing the roughness parameters have been presented in our previous work [42].…”

Diatom biosilica: Source, physical‐chemical characterization, modification, and application

“…Atomic force microscopy (AFM) was used to study the DB obtained from cultivated diatoms of the species P. trainori , and they found that the shells of diatomaceous organisms are elliptical, flattened spheroids, and the size of the frustules varies from 2 to 10 μm [50]. Moreover, AFM was utilized to investigate the frustule topography of two diatoms species, Coscinodiscus species and Thalassiosira eccentrica , where they obtained detailed information about porous biosilica nanostructures (Figure 7) [51].…”