Title:
圧電膜、およびその製造方法
Document Type and Number:
Japanese Patent JP6633834
Kind Code:
B2
Abstract:
A piezoelectric film which is better in heat and deformation resistant properties than those in the prior art is provided along with a method of making the same. The film is a piezoelectric film that is composed of a copolymer of vinylidene fluoride and trifluoroethylene, the copolymer having a content of vinylidene fluoride in a range of not less than 82 mol % and not more than 86 mol % and having a molecular weight not less than 600,000. The piezoelectric film is subjected to a heat treatment for crystallization of the copolymer at a temperature ranging from not less than 140°C to not more than 150°C, and is thereby caused to develop piezoelectric property. The piezoelectric film is further characterized in that it has a heat resistance of not less than 140°C and a breaking distortion of not less than 8 % and not more than 55 %, and an excellent deformation resistant property.
More Like This:
| WO/2009/147030 | VINYLIDENE FLUORIDE AND TRIFLUOROETHYLENE CONTAINING POLYMERS |
| WO/1997/042844 | ENERGY CONVERSION COMPOSITION |
Inventors:
Table Kenji
Samezawa sword
Koji Daito
Samezawa sword
Koji Daito
Application Number:
JP2015075983A
Publication Date:
January 22, 2020
Filing Date:
April 02, 2015
Export Citation:
Assignee:
Ideal Star Co., Ltd.
International Classes:
H01L41/193; C08F14/20; C08F14/22; C08J5/18; H01L41/45
Domestic Patent References:
| JP4311711A | ||||
| JP60041274A | ||||
| JP8036917A |
Foreign References:
| WO2010016291A1 | ||||
| EP0508802A1 | ||||
| US4784915 | ||||
| WO2010106924A1 |
Attorney, Agent or Firm:
Hisao Fukumori