Title:
MANUFACTURING METHOD OF POROUS MEMBRANE FOR FUEL CELL ELECTROLYTE MEMBRANE
Document Type and Number:
Japanese Patent JP2008084576
Kind Code:
A
Abstract:
To provide a manufacturing method of a novel porous membrane 2 capable of improving the quality and mechanical strength of a reinforcing porous membrane for an electrolyte membrane.
When the porous membrane 2 is formed by stretching a resin thin film 1, stretch is conducted in two stages of a first stretch process which is a pore formation rate-determining step and stretching in a higher speed stretching condition and of a second stretch process which is a resin orientation rate-determining step and stretching in a lower speed stretching condition than that in the pore formation rate-determining step.
Inventors:
HARADA HIROSHI
Application Number:
JP2006260514A
Publication Date:
April 10, 2008
Filing Date:
September 26, 2006
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M8/02; H01M8/10
Domestic Patent References:
| JPH07196831A | 1995-08-01 | |||
| JPH08162132A | 1996-06-21 | |||
| JPH0629032A | 1994-02-04 |
Foreign References:
| US4110392A | 1978-08-29 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Yasushi Hayakawa
Sekiya Mitsuo
Yasushi Hayakawa