Sizing agent-coated reinforcing fibers, method for producing sizing agent-coated reinforcing fibers, prepreg, and fiber-reinforced composite material
AssigneeToray Industries, Inc.
InventorsTakumi Hiasa, Daigo Kobayashi, Tomoko Ichikawa, Makoto Endo
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Abstract
Sizing agent-coated reinforcing fibers include reinforcing fibers and a sizing agent containing a polyrotaxane, the reinforcing fibers being coated with the sizing agent. Provided are sizing agent-coated reinforcing fibers that provide a fiber-reinforced composite material with excellent mechanical properties, a method for producing the sizing agent-coated reinforcing fibers, a prepreg including the sizing agent-coated reinforcing fibers, and a fiber-reinforced composite material with excellent mechanical properties including the sizing agent-coated reinforcing fibers.
Claims10
Sizing agent-coated reinforcing fibers comprising:
- reinforcing carbon fibers;
- and
- a sizing agent comprising a polyrotaxane component and an epoxy compound component,
- wherein
- the polyrotaxane component comprises cyclodextrin and polyethylene glycol, and
- the epoxy compound component is a glycidyl ether epoxy compound produced by a reaction between epichlorohydrin and at least one compound selected from glycerol, diglycerol, polyglycerol, trimethylolpropane, pentaerythritol, sorbitol, and arabitol;
- and
- wherein the reinforcing fibers are coated with the sizing agent.
Dependencies are inferred from the claim text.