Stabilized fiber, method of producing the same, and method of producing carbon fiber
AssigneesToyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
InventorsTakuya Morishita, Mamiko Narita, Makoto Mouri, Yoshihiro Kikuzawa, Hideyasu Kawai, Nozomu Shigemitsu
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Abstract
A method of producing a stabilized fiber, including performing a heat treatment on an acrylamide polymer fiber under an oxidizing atmosphere in a stabilization treatment temperature range of 200° C. to 500° C. while applying a tension of 0.07 mN/tex to 15 mN/tex.
Claims8
A method of producing a stabilized fiber, comprising
- performing a heat treatment on an acrylamide polymer fiber under an oxidizing atmosphere in a stabilization treatment temperature range of 200° C. to 500° C. while applying a tension of 0.07 mN/tex to 15 mN/tex,
- wherein the heat treatment is performed until an intensity ratio of a G peak near 1,590 cm−1 to a D peak near 1,360 cm−1 in a Raman spectrum on a side of the acrylamide polymer fiber becomes 0.5 or more,
- wherein an acrylamide polymer used in the acrylamide polymer fiber is a homopolymer of an acrylamide monomer or a copolymer of an acrylamide monomer and other polymerizable monomers in which a content of the acrylamide monomer unit in the copolymer is 50 mol % or more.
A method of producing a stabilized fiber, comprising,
- performing a heat treatment on an acrylamide polymer fiber under an oxidizing atmosphere in a stabilization treatment temperature range of 200° C. to 500° C. while applying a tension of 0.07 mN/tex to 15 mN/tex
- wherein the heat treatment is performed until a density of the acrylamide polymer fiber becomes 1.35 g/cm3 to 1.75 g/cm3,
- wherein an acrylamide polymer used in the acrylamide polymer fiber is a homopolymer of an acrylamide monomer or a copolymer of an acrylamide monomer and other polymerizable monomers in which a content of the acrylamide monomer unit in the copolymer is 50 mol % or more.
A stabilized fiber which is derived from an acrylamide polymer and has an intensity ratio of 0.5 or more of a G peak near 1,590 cm−1 to a D peak near 1,360 cm−1 in a Raman spectrum on the side of the fiber,
- wherein the acrylamide polymer is a homopolymer of an acrylamide monomer or a copolymer of an acrylamide monomer and other polymerizable monomers in which a content of the acrylamide monomer unit in the copolymer is 50 mol % or more.
A stabilized fiber which is derived from an acrylamide polymer and has a density of 1.35 g/cm3 to 1.75 g/cm3,
- wherein the acrylamide polymer is a homopolymer of an acrylamide monomer or a copolymer of an acrylamide monomer and other polymerizable monomers in which a content of the acrylamide monomer unit in the copolymer is 50 mol % or more.
Dependencies are inferred from the claim text.