NON-STRETCHED PIEZOELECTRIC MATERIAL CONTAINING PVDF AND PIEZOELECTRIC SENSOR

PROBLEM TO BE SOLVED: To obtain a piezoelectric material comprising polyvinylidene fluoride wherein contraction resulting from extension is minimized, and to provide a piezoelectric sensor using the piezoelectric material. SOLUTION: The piezoelectric material is obtained by adding quarternary ammoni...

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Bibliographische Detailangaben
Hauptverfasser:	MURAYAMA TOSHIMI, MORIYAMA NOBUHIRO, SUZUKI KAZUMOTO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PUBLIC ADDRESS SYSTEMS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a piezoelectric material comprising polyvinylidene fluoride wherein contraction resulting from extension is minimized, and to provide a piezoelectric sensor using the piezoelectric material. SOLUTION: The piezoelectric material is obtained by adding quarternary ammonium salt or clay subjected to surface treatment with quarternary ammonium salt to polyvinylidene fluoride which is homopolymer of vinylidene fluoride, and then subjecting the polyvinylidene fluoride to non-stretched polarization. Since it is non-stretched, a piezoelectric material where contraction resulting from extension is minimized, and a piezoelectric sensor using the piezoelectric material can be obtained. COPYRIGHT: (C)2011,JPO&INPIT