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US 7,896,190 B2Granted
Composites having an improved resistance to fatigue
AssigneeGM Global Technology Operations LLC
InventorsElisabeth J. Berger, John N. Owens
Life of this patent
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Abstract
Compositions including a base resin, a reinforcement and a modifier including a block copolymer for producing vesicles, spherical and/or cylindrical micelles and composites made therefrom.
Claims15
A hydrogen gas storage tank that defines a tank cavity, the hydrogen gas storage tank comprising:
- a composite layer comprising an epoxy resin matrix, a reinforcement, and a plurality of block copolymer vesicles, spherical or cylindrical micelles in an amount sufficient to improve a fatigue resistance of the resin matrix by retarding microcracking;
- a polymeric layer coupled onto said composite layer and in communication with said tank cavity;
- and
- a protective outer layer coupled over said composite layer such that said composite layer is between said protective outer layer and said polymeric layer.
1 more element
A method comprising the steps of:
- providing a hydrogen gas storage tank that defines a tank cavity, the hydrogen gas storage tank comprising:
- a composite layer comprising an epoxy resin matrix, a reinforcement, and a plurality of block copolymer vesicles, spherical or cylindrical micelles in an amount sufficient to improve a fatigue resistance of the resin matrix by retarding microcracking;
- a polymeric layer coupled onto said composite layer and in communication with said tank cavity;
- and a protective outer layer coupled over said composite layer such that said composite layer is between said protective outer layer and said polymeric layer, and
- subjecting the composite layer to dynamic stresses.
2 more elements
Dependencies are inferred from the claim text.