ELECTRET SHEET - SEKISUI CHEMICAL CO LTD

Title:

ELECTRET SHEET

Document Type and Number:

WIPO Patent Application WO/2012/144411

Kind Code:

A1

Abstract:

The present invention provides an electret having high voltage characteristics. This electret sheet contains two synthetic resins that are immiscible in each other, and these synthetic resins form a phase separated structure. This electret sheet is characterized by having a synthetic resin sheet, in which the synthetic resins are formed from cross-linking by multifunctional monomers, electrostatically charged by infusion of an electric charge; therefore, at the interface parts for the two synthetic resins that are immiscible in each other, positive charges and negative charges are present in an apparent polarized state. If an outside force is applied to the electret sheet and the electret sheet is deformed, the relative positions of these positive charges and negative charges change, and an excellent electrical response arises with this change. Therefore, the electret sheet has superior piezoelectric properties.

Inventors:

UCHIDA KAZUHO (JP)
OKABAYASHI TAKAZUMI (JP)
TAJITSU YOSHIRO (JP)

Application Number:

PCT/JP2012/060012

Publication Date:

October 26, 2012

Filing Date:

April 12, 2012

Export Citation:

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Assignee:

SEKISUI CHEMICAL CO LTD (JP)
SCHOOL CORP KANSAI UNIV (JP)
UCHIDA KAZUHO (JP)
OKABAYASHI TAKAZUMI (JP)
TAJITSU YOSHIRO (JP)

International Classes:

C08J5/18; H01G7/02; C08K7/22; C08L23/04; C08L23/10; C08L101/12; H04R19/01

Domestic Patent References:

WO2009104423A1	2009-08-27
WO2010032759A1	2010-03-25

Foreign References:

JPH07290482A	1995-11-07
JP2010080743A	2010-04-08
JPH0762311A	1995-03-07
JP2007145960A	2007-06-14

Other References: