6533b821fe1ef96bd127b8f5
RESEARCH PRODUCT
An experimental study of dynamic behaviour of graphite polycarbonatediol polyurethane composites for protective coatings
Maria J. SanchisMario CulebrasM. CarsíB. Redondo-fojClara M. GómezAndrés CantareroP. Ortiz-sernasubject
Expanded graphitePolyurethaneMaterials scienceDielectricRelaxation (NMR)Composite numberGeneral Physics and AstronomySurfaces and InterfacesGeneral ChemistryDielectricConductivityCondensed Matter PhysicsSurfaces Coatings and Filmschemistry.chemical_compoundchemistryMAQUINAS Y MOTORES TERMICOSGraphiteComposite materialThermal analysisTERMODINAMICA APLICADA (UPV)Electrical conductorPolyurethaneCompositesdescription
Segmented polycarbonatediol polyurethane (PUPH) has been synthesized and modified with different amounts of graphite conductive filler (from 0 to 50 wt%). Thermal and dynamical thermal analysis of the composites clearly indicates changes in the polyurethane relaxations upon addition of graphite. Broadband dielectric spectroscopy has been used to study the dielectric properties of the (PUPH) and one composite in the frequency range from 10−2 to 107 Hz and in the temperature window of −140 to 170 ◦C. Relaxation processes associated with different molecular motions and conductivity phenomena (Maxwell–Wagner–Sillars and electrode polarization) are discussed and related to the graphite content
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-06-01 |