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Electroactively smart vibration damping suspensions of diatomite/silicone oil

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Abstract

In this study, the literature gap for diatomite/silicone oil (SO) suspensions is fully investigated. Firstly, the structure, size, zeta-potential, morphology, thermal, and conductivity properties of diatomite are searched. Then, dielectric properties of a series of diatomite/SO suspensions with various volumes are analyzed and the effects of concentration on dielectric properties are discussed based on the interparticle distances. Optimum 10 volume% diatomite/SO suspensions are observed to show shear thinning behavior with yield stresses of 0.6 ± 1.8 Pa and 47 ± 5.2 Pa at E = 0 kV/mm and E = 3.5 kV/mm, respectively. The viscoelastic test shows that the suspension has vibration damping capability under both off and on-electric fields owing to the dominant elastic behavior. According to the creep-recovery results, the suspension system exhibits 25% recovery under E = 3.5 kV/mm. This indicates that the diatomite/SO suspension system can be used as an electroactive vibration damping material.

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Correspondence to Halil Ibrahim Unal.

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Ozdemir, C., Gumus, O.Y., Calis-Ismetoglu, G. et al. Electroactively smart vibration damping suspensions of diatomite/silicone oil. Rheol Acta 61, 459–472 (2022). https://doi.org/10.1007/s00397-022-01342-3

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  • DOI: https://doi.org/10.1007/s00397-022-01342-3

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