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Title:
ION EXCHANGE COMPOSITE MATERIAL BASED ON PROTON CONDUCTIVE SILICA PARTICLES DISPERSED IN A POLYMER MATRIX
Document Type and Number:
WIPO Patent Application WO2003083985
Kind Code:
A3
Abstract:
The composite material comprises acid functionalized silica dispersed in a polymer matrix that is based on poly(aromatic ether ketones), or poly(benzoyl phenylene), or derivatives thereof. The composite material is characterized by good water retention capabilities due to the acidic functions and the hydrophilicity of the silica particles. Moreover, a good impermeability to gas and liquid fuels commonly used in fuel cell technology, like hydrogen gas or methanol solution, is also obtained due to the presence of silica particles. Good mechanical properties of the composite material let the material to be formed easily in thin film or membrane form. In that form, the composite material is usable for proton exchange membrane for fuel cells, for drying or humidifying membrane for gas or solvent conditioning, or as acid catalytic membrane.

Inventors:
ST-ARNAUD MARC (CA)
BEBIN PHILIPPE (CA)
Application Number:
PCT/CA2003/000435
Publication Date:
December 16, 2004
Filing Date:
March 26, 2003
Export Citation:
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Assignee:
SIM COMPOSITES INC (CA)
ST-ARNAUD MARC (CA)
BEBIN PHILIPPE (CA)
International Classes:
B01D67/00; B01D69/14; B01D71/02; B01D71/06; B01D71/52; C08L71/10; B01D71/72; B01D71/82; C08J5/22; C08K9/02; C08K9/04; C08L73/00; H01B1/06; H01M8/02; H01M8/10; (IPC1-7): H01M8/10; H01M8/02; H01M8/10; B01D71/06; C08J5/22
Domestic Patent References:
WO2002005370A12002-01-17
Foreign References:
CA2292703A12000-06-18
US6716548B12004-04-06
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 23 10 February 2001 (2001-02-10)
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