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AssigneeChung Yuan Christian University
InventorsYung TING, Sheuan-Perng LIN, Masroor Ahmad SOFI, Hao-Chun YANG, Ping-Che LU
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A piezoelectric element and its manufacturing method are disclosed, wherein the piezoelectric element includes a piezoelectric composite material and at least one polarization zone, characterized in that the piezoelectric composite material is composed of piezoelectric ceramic powder and thermoplastic elastomer, wherein a piezoelectric hybrid blank is formed through a mixing process of the piezoelectric ceramic powder with the thermoplastic elastomer and the piezoelectric hybrid blank is formed into a piezoelectric composite material after injection and thermoplastic processes. The piezoelectric composite material is thickness polarized or surface polarized to produce the piezoelectric element. There is at least one polarization zone, in which the volume ratio of piezoelectric ceramic powder is between 40% and 80%.
A piezoelectric element, comprising a piezoelectric composite material and at least one polarization zone, characterized in that the piezoelectric composite material is composed of a piezoelectric ceramic powder and a thermoplastic elastomer (TPE), wherein the piezoelectric ceramic powder and the thermoplastic elastomer form a piezoelectric mixed blank through a mixing procedure, the piezoelectric mixed blank becomes the piezoelectric composite material after injection and thermoplastic procedures, and thickness poling or surface poling is performed on the piezoelectric composite material to generate at least one polarization zone, wherein a volume ratio of the piezoelectric ceramic powder ranges from 40% to 80%, wherein no chemical solutions or surfactants are added during the mixing procedure and the piezoelectric ceramic powder and the thermoplastic polyurethane are only physically blended.
A piezoelectric element manufacture method, for manufacturing a piezoelectric element, the piezoelectric element comprising a piezoelectric composite material and at least one polarization zone, the piezoelectric element manufacturing method comprising the following steps:
Dependencies are inferred from the claim text.