Linear polyorganophosphazene films as flexible piezoelectrics and actuatorsстатьяНаучно-популярная статья
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Дата последнего поиска статьи во внешних источниках: 18 апреля 2017 г.
Аннотация:Piezoelectric, electret and actuator properties for series of mesophase fluorinated polyorgano
phosphazenes, synthesized in conditions of defectless macromolecules formation with molecular weights
exceeding 106 have been studied. It was shown that majority of polymers under consideration are natural elec
tretes, i.e., generate electrical charge at deformation before treatment in corona charge. Doping the sample
with lithium triflate salt increases piezoelectric modulus d31 as before, as after polarization in electric field. In
the last case the value of the modulus is comparable with piesoceramics. Stability and reproducibility of
piezoelectric characteristics was also characterized. Simultaneously the actuator response in bending strain
was investigated. The model devices reflecting piezoeffect (pressure sensor) and electrostriction (flexure actu
ator) were constructed and demonstrated.