Co-extrusion of Piezoelectric Ceramic FibresThe present work successfully developed a methodology for fabricating lead zirconate titanate [PZT] thin solid- and hollow-fibres by the thermoplastic co-extrusion process. The whole process chain, that includes: a) compounding, involving the mixing of ceramic powder with a thermoplastic binder, b) rheological characterizations, c) preform composite fabrication followed by co-extrusion, d) debinding and, finally, e) sintering of the body to near full density, is systematically descr |
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1-3 composites Additionally analyses apparent viscosity binder material Blend carbon black CB co-extruded fibres ceramic powder Co-Ex co-extruded materials compounds concentric-cylinder debinding decomposition degradation diameter electric field electromechanical performance equation extruded fibres feedstocks containing ferroelectric Figure Frankel-Acrivos free strain fugitive feedstock fugitive material function grain higher hollow-fibres production intrinsic viscosity Krieger-Dougherty layer LDPE feedstock lead zirconate titanate low density polyethylene maximum MCC feedstock microcrystalline cellulose microstructure mixing mm/min mm³ Ext morphotropic parameters particles phase composition PiBMA piston polarisation polymer porosity preform composite primary feedstock primary material PZT feedstocks PZT fibres PZT powder PZT-P505 batch Quemada ratio relative viscosity rheological behaviour Rheological characterisations rheometer rhombohedral rotor speed selected shear rate sintering sintering temperature Smax solid and hollow-fibres solid loading solid-fibres production solids content Srem stearic acid stress structure successful co-extrusion surfactant Table thermoplastic binder material Tonset torque torque-rheometer torque/rpm unfilled polymers velocity viscosity models