Title:
POROUS SEPARATOR FOR FUEL CELLS
Document Type and Number:
WIPO Patent Application WO/2013/047485
Kind Code:
A1
Abstract:
A porous separator for fuel cells, which is obtained by molding a composition that contains a carbon material powder and a resin component, and which is characterized in that: the resin component contains an epoxy resin and a curing agent therefor; the epoxy resin is a phenolic novolac epoxy resin that has an ICI viscosity at 150˚C of 0.3-0.9 Pa·s and an epoxy equivalent weight of 175-195 g/eq; the curing agent is a novolac phenol resin that has a hydroxyl equivalent weight of 103-106 g/eq; the resin component is contained in an amount of 10-13 parts by mass per 100 parts by mass of the carbon material powder; and the porous separator for fuel cells has a porosity of 16-25% by volume, a water absorption time of 50 seconds or less and a compressive strength of 50-80 MPa. This separator is porous and thus has good water absorption and good water permeability, and still has high compressive strength and excellent compressive strength retention ratio.
Inventors:
TANNO FUMIO (JP)
Application Number:
PCT/JP2012/074493
Publication Date:
April 04, 2013
Filing Date:
September 25, 2012
Export Citation:
Assignee:
NISSHINBO CHEMICAL INC (JP)
International Classes:
H01M8/02; C08K3/04; C08L61/06; C08L63/04
Foreign References:
| JP2011028986A | 2011-02-10 | |||
| JP2008123828A | 2008-05-29 | |||
| JP2010040232A | 2010-02-18 | |||
| JP2001520245A | 2001-10-30 | |||
| JP2002518815A | 2002-06-25 | |||
| JP2001509950A | 2001-07-24 |
Other References:
See also references of EP 2763223A4
Attorney, Agent or Firm:
KOJIMA TAKASHI (JP)
Takashi Kojima (JP)
Takashi Kojima (JP)
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Claims: