Carbon fiber reinforced composite and production method of carbon fiber reinforced composite
AssigneeSekisui Chemical Co., Ltd.
InventorsAyako Oota, Haruka Yoshida
Life of this patent
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Abstract
The present invention provides a carbon-fiber-reinforced composite that can reduce the curing time and achieve high mechanical strength while reducing resin bleeding, and a method for producing a carbon-fiber-reinforced composite. Provided is a carbon-fiber-reinforced composite containing: carbon fibers, an epoxy resin, a curing agent, and a thermoplastic resin, wherein a mixture of the epoxy resin and the thermoplastic resin has a ratio of viscosity at 30° C. to viscosity at 90° C. (viscosity at 30° C./viscosity at 90° C.) of less than 100.
Claims8
A carbon-fiber-reinforced composite comprising:
- carbon fibers;
- an epoxy resin;
- a curing agent;
- and
- a thermoplastic resin,
- wherein a mixture of the epoxy resin and the thermoplastic resin has a ratio of viscosity at 30° C. to viscosity at 90° C. (viscosity at 30° C./viscosity at 90° C.) of less than 100,
- the thermoplastic resin is a polyvinyl acetal resin, and
- the polyvinyl acetal resin has a hydroxy group content of 16.0 mol % or more and 45.0 mol % or less.
A method for producing a carbon-fiber-reinforced composite, comprising at least the steps of:
- forming a resin composition containing an epoxy resin, a curing agent, and a thermoplastic resin;
- and
- forming a composite of the resin composition with carbon fibers,
- wherein a mixture of the epoxy resin and the thermoplastic resin has a ratio of viscosity at 30° C. to viscosity at 90° C. (viscosity at 30° C./viscosity at 90° C.) of less than 100,
- the thermoplastic resin is a polyvinyl acetal resin, and
- the polyvinyl acetal resin has a hydroxy group content of 16.0 mol % or more and 45.0 mol % or less.
Dependencies are inferred from the claim text.