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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Piezoelectric composite material and preparation method thereof
The invention provides a piezoelectric ceramic, polyvinylidene fluoride (PVDF) and pressure-sensitive material three-phase composite material with high piezoelectric property. The pressure-sensitive material is added to a piezoelectric ceramic/PVDF piezoelectric composite material as an intermediate layer, so as to play a bridging role; the interfacial bonding properties of the piezoelectric ceramic and the PVDF are improved; coupling between the piezoelectric ceramic and the PVDF is increased; electron migration between ceramic particles is promoted; and the polarization voltage of a ceramic phase is improved. In addition, due to the nonlinear current-voltage characteristics of the pressure-sensitive material, when the pressure-sensitive material is added to the piezoelectric ceramic and PVDF composite material, the polarization-resistant voltage of the piezoelectric composite material is improved; and the overall piezoelectric property of the composite material is improved. Therefore, the piezoelectric composite material is simple in process, and low in cost; the piezoelectric composite film with excellent overall performance and large size can be prepared; and the piezoelectric composite material is expected to be applied to a piezoelectric touchpad, thus industrialized production is achieved.
Piezoelectric composite material and preparation method thereof
The invention provides a piezoelectric ceramic, polyvinylidene fluoride (PVDF) and pressure-sensitive material three-phase composite material with high piezoelectric property. The pressure-sensitive material is added to a piezoelectric ceramic/PVDF piezoelectric composite material as an intermediate layer, so as to play a bridging role; the interfacial bonding properties of the piezoelectric ceramic and the PVDF are improved; coupling between the piezoelectric ceramic and the PVDF is increased; electron migration between ceramic particles is promoted; and the polarization voltage of a ceramic phase is improved. In addition, due to the nonlinear current-voltage characteristics of the pressure-sensitive material, when the pressure-sensitive material is added to the piezoelectric ceramic and PVDF composite material, the polarization-resistant voltage of the piezoelectric composite material is improved; and the overall piezoelectric property of the composite material is improved. Therefore, the piezoelectric composite material is simple in process, and low in cost; the piezoelectric composite film with excellent overall performance and large size can be prepared; and the piezoelectric composite material is expected to be applied to a piezoelectric touchpad, thus industrialized production is achieved.
Piezoelectric composite material and preparation method thereof
FAN JINGBO (Autor:in) / TANG ZHILAN (Autor:in) / LI WANG (Autor:in)
08.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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