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US 12,428,778 B2Granted
Carbon fiber bundle with adhered sizing agent
AssigneeTeijin Limited
InventorsTaisuke Fujimoto, Akimichi Oda, Hidekazu Yoshikawa
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Abstract
A carbon fiber bundle having a high abrasion resistance property and simultaneously being excellent in widening property is provided by a carbon fiber bundle with an adhered sizing agent including a carbon fiber bundle, and a sizing agent adhered to a surface of the carbon fiber bundle, wherein the sizing agent contains an epoxy compound, and shows an intersection of a storage modulus and a loss modulus at an angular frequency in the range of 1×105 to 1×109 rad/sec in a measurement at 25° C.
Claims12
A carbon fiber bundle with an adhered sizing agent comprising:
- a carbon fiber, and
- a sizing agent adhered to a surface of the carbon fiber,
- wherein the sizing agent contains an epoxy compound, and shows an intersection of a storage modulus and a loss modulus at an angular frequency in the range of 1×105 to 1×109 rad/sec in a measurement at 25° C.
Dependencies are inferred from the claim text.