Loading patent…
AssigneeMitsubishi Chemical Corporation
InventorsNaomasa MATSUYAMA, Kyu OTA, Mitsuhiro HAMADA, Hiroko MATSUMURA, Hiroki HAMAMOTO
Estimating the term…
Provided are a carbon fiber bundle having a high strand elastic modulus and high strand strength, and having balanced physical properties even when the average diameter of carbon fiber single-fibers is large, and a method for producing the same. The carbon fiber bundle of the present invention has an average diameter of carbon fiber single-fibers of 5.7 μm or more and 6.5 μm or less, substantially no twist, a strand strength of 4.7 GPa or more, and a strand elastic modulus of 320 GPa or more.
A carbon fiber bundle comprising carbon fiber single-fibers having an average diameter of 5.7 μm or more and 6.5 μm or less,
A method for producing a carbon fiber bundle, the method comprising heating a carbon fiber precursor acrylic fiber bundle in an oxidizing atmosphere to form a stabilized fiber bundle, and heating the stabilized fiber bundle in a non-oxidizing atmosphere to form a carbon fiber bundle, wherein
Dependencies are inferred from the claim text.