公开(公告)号：JPH02289121A

公开(公告)日：1990-11-29

申请号：JP11660189

申请日：1989-05-09

Applicant: TORAY INDUSTRIES

Inventor： WASHIYAMA MASAYOSHI ,  MATSUHISA YOJI ,  HIRAMATSU TORU

IPC: D01F9/14

Abstract: PURPOSE:To easily obtain a carbon fiber having dense texture and excellent strength, modulus, etc., by infusibilizing a carbon fiber precursor in an oxidizing atmosphere and carbonizing the fiber in an inert atmosphere under pressure. CONSTITUTION:A precursor for carbon fiber (e.g. acrylic fiber, pitch fiber or rayon fiber) is subjected to infusibilizing treatment or flame-resisting treatment in an oxidizing atmosphere (preferably air) under tension or drawing condition preferably at 200-300 deg.C. The produced fiber is carbonized by heating in an inert atmosphere at preferably 300-1000 deg.C under pressure (preferably 5-100kg/ cm .G) to obtain the objective carbon fiber.

公开(公告)号：JPH02251615A

公开(公告)日：1990-10-09

申请号：JP6715289

申请日：1989-03-17

Applicant: TORAY INDUSTRIES

Inventor： MATSUHISA YOJI ,  WASHIYAMA MASAYOSHI ,  HIRAMATSU TORU

IPC: D01F6/18 ,  D01F6/54 ,  D01F9/22

Abstract: PURPOSE:To obtain the title carbon yarn useful as materials to be exposed to high temperature such as aerospace material, having strength of resin impregnated strand of >= a specific value, excellent tensile strength and thermal oxidation resistance, containing a specific amount of zirconium (compound). CONSTITUTION:The objective yarn contains 0.1 to 10wt.% calculated as zirconium of zirconium (compound) and has >=450kg/cm strength of resin impregnated strand. Preferably zirconium (compound) is added as fine particles having

公开(公告)号：JPS62149968A

公开(公告)日：1987-07-03

申请号：JP28783085

申请日：1985-12-23

Applicant: TORAY INDUSTRIES

Inventor： SANO SHINJI ,  MATSUHISA YOJI ,  HIRAMATSU TORU

IPC: C08J5/06 ,  D06M10/00 ,  D06M101/00 ,  D06M101/40

公开(公告)号：JPS62149967A

公开(公告)日：1987-07-03

申请号：JP28782285

申请日：1985-12-23

Applicant: TORAY INDUSTRIES

Inventor： MATSUHISA YOJI ,  HIRAMATSU TORU ,  HIGUCHI TOMIMASA

IPC: D06B13/00 ,  D06M10/00 ,  D06M101/00 ,  D06M101/40

公开(公告)号：JPS61225330A

公开(公告)日：1986-10-07

申请号：JP6387485

申请日：1985-03-29

Applicant: TORAY INDUSTRIES

Inventor： HIRAMATSU TORU ,  MATSUHISA YOJI ,  HIGUCHI TOMIMASA

IPC: D01F11/10 ,  D01F9/12 ,  D01F9/14 ,  D01F9/22 ,  D01F11/16

Abstract: PURPOSE:Acrylic carbon fibers are anodized in a specific electrolyte solution, than heat-treated in an inert or reductive atmosphere to product carbon fibers for making composite materials of superhigh strength. CONSTITUTION:Acrylic carbon fibers with an average filament strength of more than 400kg/mm are anodized in an electrolyte solution which contains nitrate ions and is kept over 40 deg.C using the carbon fibers as the anode with a currency of about 50-600coulombs/g of fibers. Then, the fibers are washed with water, dried and heat-treated at 600-1,000 deg.C in an inert or reductive atmosphere to inactivate their surfaces. Thus, although the completeness of crystals are low on the ultrathin outermost layer, the completeness of crystals on the surface layer is substantially at the same level as in the core part of the fibers to give carbon fibers than 600kg/mm strength as a strand which is impregnated with a resin.

公开(公告)号：JP2002138370A

公开(公告)日：2002-05-14

申请号：JP2000328298

申请日：2000-10-27

Applicant: TORAY INDUSTRIES

Inventor： KOBAYASHI MASANOBU ,  TSUCHIYA ATSUKI ,  MATSUHISA YOJI

IPC: C08J5/06 ,  C08K9/04 ,  C08L101/00 ,  D06M15/53 ,  D06M15/55 ,  D06M15/59

Abstract: PROBLEM TO BE SOLVED: To produce a chopped carbon fiber strand that has good fluidity and excellent cost performance, to obtain a fiber-reinforced thermoplastic resin composition produced by using the chopped strand and a formed body having good mechanical properties and electroconductivity produced by using the fiber- reinforced thermoplastic resin composition. SOLUTION: The objective chopped carbon fiber strand is surface-coated with a sizing agent including a polyether as a major component, and in addition, over-coated with another sizing agent including a thermoplastic resin.

公开(公告)号：JP2002088656A

公开(公告)日：2002-03-27

申请号：JP2000271241

申请日：2000-09-07

Applicant: TORAY INDUSTRIES

Inventor： TSUCHIYA ATSUKI ,  KOBAYASHI MASANOBU ,  MATSUHISA YOJI

IPC: B29C45/00 ,  D06M15/59

Abstract: PROBLEM TO BE SOLVED: To provide a carbon fiber bundle for molding, excellent in weaving performance and suitable for RIM molding. SOLUTION: This carbon fiber bundle for molding is characterized by being stuck with a water-soluble polyamide resin having 10-30 wt.% saturated water absorption and >=170% tensile elongation at break so as to satisfy the relationship: [saturated water absorption (wt.%)]×[add-on (wt.%)]

公开(公告)号：JP2002054031A

公开(公告)日：2002-02-19

申请号：JP2000236646

申请日：2000-08-04

Applicant: TORAY INDUSTRIES

Inventor： MIZUHASHI MOTOI ,  OKI NOBUAKI ,  MATSUHISA YOJI

IPC: D01F9/22

Abstract: PROBLEM TO BE SOLVED: To provide a carbon fiber having an excellent tensile modulus, and capable of allowing a composite material obtained therefrom to exhibit a high compression strength, and further to provide a method for stably producing the carbon fiber. SOLUTION: This acrylic carbon fiber has 340-700 GPa tensile modulus, 3.4-5.5 GPa tensile strength, 0.5-1.4% tensile elongation, 2.5-3.2 nm crystal size Lc of the (002) face in the carbon net faces measured by a wide angle X-ray diffraction method, 3-4.5 nm crystal size La of the (100) face in the carbon net faces, 2-3.5 number n-ave of average laminated layers measured by a powder wide angle X-ray diffraction method, and 1.45-2 GPa compression strength based on ASTM D695.

公开(公告)号：JP2001348783A

公开(公告)日：2001-12-21

申请号：JP2000167820

申请日：2000-06-05

Applicant: TORAY INDUSTRIES

Inventor： OZAKI MITSUTOSHI ,  KOBAYASHI MASANOBU ,  MATSUHISA YOJI

IPC: B60C9/00 ,  D02G3/40 ,  D02G3/48 ,  D06M15/263 ,  D06M15/55 ,  D06M15/564

Abstract: PROBLEM TO BE SOLVED: To provide a carbon fiber bundle useful in rubber-reinforcing use and the like, slight in fluffing despite being twisted, and high in knot strength. SOLUTION: This carbon fiber bundle is a sizing agent-coated one, being such as to be >=40 in hardness determined in accordance with JIS-K7215(type A durometer) and 50-250 turns/m in the number of twists and comprise fibers each >=0.15 N/Tex in knot strength determined in accordance with ASTM D-2256-88.

公开(公告)号：JP2001164431A

公开(公告)日：2001-06-19

申请号：JP35121599

申请日：1999-12-10

Applicant: TORAY INDUSTRIES

Inventor： YAMAZAKI KATSUMI ,  MATSUHISA YOJI ,  TANAKA MASARU

IPC: D01F6/40 ,  D01F9/22

Abstract: PROBLEM TO BE SOLVED: To provide a method for stably producing a flame resistant fiber at a low cost from an acrylic copolymer without using a solvent for spinning, and further to provide a method for producing a high-quality carbon fiber from the flame-resistant fiber. SOLUTION: This method for producing the flame-resistant fiber comprises heating the acrylic copolymer so as to have 60-80% retention of nitrile group in an inert gas atmosphere, melting the resultant copolymer, spinning the melted acrylic copolymer from a nozzle to form a fiber-shaped material, and heating the resultant fiber-shaped material to 200-280 deg.C in an oxidizing atmosphere to provide the objective flame-resistant fiber.