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US 12,655,542 B2Granted
Carbon fiber, manufacturing method thereof, and carbon fiber composite material
AssigneeToray Industries, Inc.
InventorsFumihiko Tanaka, Yuki Suga
Life of this patent
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Abstract
Provided is a carbon fiber with a strand modulus of elasticity from 240 to 300 GPa, an elongation of 2.65% or more, and a strain energy density of 95 J/mm3 or more, which can improve the impact resistance of carbon fiber composite materials.
Claims6
A carbon fiber with a strand modulus of elasticity from 240 to 300 GPa, a percentage elongation at break of 2.75% or more, and a strain energy density of 95 J/mm3 or more,
- wherein the carbon fiber comprises a plurality of single fibers having a diameter of 5.0 μm or more and 7.5 μm or less.
Dependencies are inferred from the claim text.