Optimized pyroelectric properties of 0-3 composites of PZT particles in polyurethane doped with lithium perchlorate.
A substantial improvement in the performance of pyroelectric 0-3 composites of ceramic particles in a polymer matrix has been achieved by doping the polymer matrix material. Readily prepared and polarized films with various volume fractions of lead zirconate-titanate (PZT) particles in polyurethane have been doped in a solution of lithium perchlorate in acetone to increase the conductivity. With an appropriate conductivity, the dielectric permittivities of the ceramic particles and the polymer matrix become matched, resulting in an improvement of the pyroelectric coefficient from about 6 microC/(m(2)K) to about 50 microC/(m(2)K). The experimental results are explained by theoretical predictions.
Ploss
Bernd
B
Department SciTec, University of Applied Sciences (FH) Jena, Germany. bernd.ploss@fh-jena.de
Krause
Markus
M
D004553:Electric Conductivity; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006358:Hot Temperature; D007854:Lead / Q000737:chemistry*; D018020:Lithium Compounds / Q000737:chemistry*; D008422:Materials Testing; D008839:Microelectrodes; D008863:Microspheres; D010472:Perchlorates / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D011786:Quality Control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014025:Titanium / Q000737:chemistry*; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods; D015040:Zirconium / Q000737:chemistry*
D018020:Lithium Compounds; D010472:Perchlorates; D011140:Polyurethanes; C065536:lead titanate zirconate; D007854:Lead; D015040:Zirconium; D014025:Titanium; C054684:lithium perchlorate