Title:
エレクトレットシート
Document Type and Number:
Japanese Patent JP5820374
Kind Code:
B2
Abstract:
Provided is an electret having high piezoelectric properties. An electret sheet of the invention is characterized in that it comprises a synthetic resin sheet is electrified by injecting electric charges thereinto, that the synthetic resin sheet comprises two types of synthetic resins incompatible with each other, and that these synthetic resins form a phase separated structure and are cross-linked through a polyfunctional monomer. Therefore, positive and negative charges in an apparently polarized state are present in the interfacial portions between the two types of synthetic resins incompatible with each other. By applying an external force to the electret sheet to deform it, the relative positions of these positive and negative charges are changed, and these changes cause a favorable electrical response. Therefore, the electret sheet has high piezoelectric properties.
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Inventors:
Kazuho Uchida
Okabayashi Prize
Yoshiro Tami
Okabayashi Prize
Yoshiro Tami
Application Number:
JP2012519806A
Publication Date:
November 24, 2015
Filing Date:
April 12, 2012
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
Kansai University
Kansai University
International Classes:
H01G7/02; C08J3/24; C08J5/18; C08J9/10; C08K7/22; C08L23/02; C08L101/00; H04R19/01
Domestic Patent References:
| JP7290482A | ||||
| JP2010080743A | ||||
| JP7062311A |
Foreign References:
| WO2009104423A1 | ||||
| WO2010032759A1 |
Attorney, Agent or Firm:
Takuya Yamamoto
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