Piezoelectric Stack
AssigneesNippon Valqua Industries, Ltd., The School Corporation Kansai University
InventorsTetsuya Komeda, Yuki Yamanaka, Yoshiro Tajitsu
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Abstract
A piezoelectric stack includes a porous resin sheet, and a surface coating layer disposed on an exterior surface of the porous resin sheet, the exterior surface including at least one of a front surface and a back surface of the porous resin sheet, the surface coating layer having a volume resistivity of not less than 1×1013 Ω·cm, the porous resin sheet and the surface coating layer having different elastic moduli.
Claims19
A piezoelectric stack comprising:
- a porous resin sheet, and
- a surface coating layer disposed on an exterior surface of the porous resin sheet, the exterior surface including at least one of a front surface and a back surface of the porous resin sheet,
- the surface coating layer having a volume resistivity of not less than 1×1013 Ω·cm, the porous resin sheet and the surface coating layer having different elastic moduli.
A piezoelectric sheet comprising a nonwoven fabric or a woven fabric formed of fibers comprising an organic polymer.
A piezoelectric sheet comprising a nonwoven fabric or a woven fabric formed of fibers comprising an inorganic material, the piezoelectric sheet having a porosity of not less than 60%.
Dependencies are inferred from the claim text.