Published November 2019 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Universidade Estadual Paulista (UNESP), Faculdade de Engenharia, Câmpus de Ilha Solteira. Av. Brasil, 56, 15385-000, Ilha Solteira, SP (Brazil)
  • 2. Universidade Federal de Goiás (UFG), Instituto de Química, Avenida Esperança, s/n, Campus Samambaia, Goiânia, GO (Brazil)
  • 3. Universidade Estadual Paulista (Unesp), Instituto de Química. Av. Prof. Francisco Degni, 55 - Jardim Quitandinha, Araraquara, SP, 14800-900, Araraquara (Brazil)
  • 4. Universidade Federal de São Carlos – UFSCar, LIEC. Rodovia Washington Luís, s/n, 13565-905, São Carlos, SP (Brazil)
  • 5. Universidade Estadual Paulista (UNESP), Câmpus Experimental de Rosana (Brazil)

Description

Cement/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.

Additional details

Identifiers

DOI
10.1016/j.materresbull.2019.110541;
PII
S0025540819307512;

Publishing Information

Journal Title
Materials Research Bulletin
Journal Volume
119
Journal Page Range
vp.
ISSN
0025-5408
CODEN
MRBUAC

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
55035306
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ACOUSTICS; ADHESION; BINDERS; CEMENTS; CONCRETES; DIELECTRIC MATERIALS; ELECTRIC POTENTIAL; MATRICES; MICROSTRUCTURE; MOBILITY; PIEZOELECTRICITY; POLARIZATION; POLYURETHANES; POROSITY; POROUS MATERIALS; SENSORS; SURFACES
Descriptors DEC
BUILDING MATERIALS; ELECTRICITY; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYAMIDES; POLYMERS; SYNTHETIC MATERIALS

Optional Information

Copyright
Copyright (c) 2019 Elsevier Ltd. All rights reserved.