Influence of polymer insertion on the dielectric, piezoelectric and acoustic properties of 1-0-3 polyurethane/cement-based piezo composite

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal de Goiás (UFG)
dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2019-10-06T16:39:11Z
dc.date.accessioned2022-12-19T18:54:15Z
dc.date.available2019-10-06T16:39:11Z
dc.date.available2022-12-19T18:54:15Z
dc.date.created2019-10-06T16:39:11Z
dc.date.issued2019-11-01
dc.identifierMaterials Research Bulletin, v. 119.
dc.identifier0025-5408
dc.identifierhttp://hdl.handle.net/11449/189392
dc.identifier10.1016/j.materresbull.2019.110541
dc.identifier2-s2.0-85068837130
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5370430
dc.description.abstractCement/polyurethane based piezo composite was fabricated with 1-0–3 connectivity. Microstructural analysis shows that polyurethane (PU) acts as a binder, reducing the porosity and improving the matrix adhesion to the piezoelectric phase. Dielectric characterisation shows that PU strongly reduces both the interfacial polarisation process and the ionic mobility in the matrix, thus decreasing the dielectric constant and increasing the values of voltage constant (g33) and electromechanical coupling coefficient (kt). The composite was surface mounted on a porous concrete bar and evaluated as an acoustic emission sensor (AE). The results show that this material is a highly sensitive sensor for AE detection in the frequency range 50–220 kHz.
dc.languageeng
dc.relationMaterials Research Bulletin
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectA. Composites
dc.subjectC. Impedance spectroscopy
dc.subjectD. Acoustical properties
dc.subjectD. Dielectric properties
dc.titleInfluence of polymer insertion on the dielectric, piezoelectric and acoustic properties of 1-0-3 polyurethane/cement-based piezo composite
dc.typeArtículos de revistas


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