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1. 发明专利

JP2003096625A METHOD FOR PRODUCING CARBON FIBER 审中-公开
公开(公告)号：JP2003096625A
公开(公告)日：2003-04-03
申请号：JP2002186142
申请日：2002-06-26
申请人： TORAY INDUSTRIES
发明人： ITO TAKESHI , KOBAYASHI MAKOTO , TAKEDA SHIGERU
IPC分类号： D01F9/22
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a carbon fiber by using a horizontal carbonization furnace, effectively discharging the waste gas by controlling the pressures in the furnace at the inlet side and the outlet side of a flame- resistant yarn, giving carbon fibers having stable quality and preventing the leakage of the waste gas. SOLUTION: A gas is flowed in the horizontal carbonization furnace from the inlet side to the outlet side of the flame-resistant yarn and the waste gas in the furnace is discharged from a waste gas suction port. The yarn is carbonized while maintaining the pressure in the furnace at the yarn-inlet and outlet sides to be higher than the atmospheric pressure and keeping the average pressure gradient from the outlet and inlet sides to a waste gas suction port to >=0.25 Pa/m.

2. 发明专利

JPH10130963A CARBON FIBER, PRECURSOR FOR CARBON FIBER AND PRODUCTION THEREOF 失效
公开(公告)号：JPH10130963A
公开(公告)日：1998-05-19
申请号：JP23573297
申请日：1997-09-01
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , MATSUHISA YOJI
IPC分类号： D01F6/18 , D01F6/40 , D01F6/54 , D01F9/22
摘要： PROBLEM TO BE SOLVED: To obtain a carbon fiber having a high tensile strength, a precursor capable of obtaining such carbon fiber in a good productivity and effectively, and methods suitable for obtaining the above carbon fiber and the above precursor. SOLUTION: This carbon fiber shows a difference in elasticities K in an outer and in an inner layers, defined by the formula: K=(YM0 -YM1 )/D2 , which satisfies the following equation, K (YM) +7.136×10 YM-1.1 [wherein, YM (GPa) is mean elasicity of a whole monofilament; YM0 (GPa) is an elasticity in an outermost surface layer; YM1 (GPa) is an elasticity in a center; and D (μm) is mean monofilament diameter].

3. 发明专利

JPH0284505A PRECURSOR FOR PRODUCING CARBON FIBER 失效
公开(公告)号：JPH0284505A
公开(公告)日：1990-03-26
申请号：JP10814989
申请日：1989-04-26
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , OHARA HARUO , TSUNODA ATSUSHI
IPC分类号： C08F220/04 , C08F220/00 , C08F220/10 , C08F220/18 , C08F220/44 , D01F6/18 , D01F6/38 , D01F9/22
摘要： PURPOSE:To provide the subject precursor having an oxygen concentration ratio of =85% of acrylonitrile, 1-10% of a polymerizable unsaturated carboxylic acid ester (e.g., normal butyl methacrylate) and 0.25-5% of a polymerizable unsaturated carboxylic acid (e.g., itaconic acid) is copolymerized in a solvent such as dimethyl sulfoxide to prepare a spinning raw solution, which is spun out in an aqueous dimethyl sulfoxide solution from a spinneret, followed by drawing the produced fiber and subsequently subjecting the drawn fiber to a fire-resisting treatment at 260 deg.C for 5min and further at 280 deg.C for 5min in air at atmospheric pressure to provide the objective carbon fiber precursor having an oxygen concentration ratio of

4. 发明专利

JPH0941226A PRECURSOR FOR CARBON FIBER PRODUCTION AND ITS PRODUCTION 失效
公开(公告)号：JPH0941226A
公开(公告)日：1997-02-10
申请号：JP19167295
申请日：1995-07-27
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , MATSUHISA YOJI , SHIMIZU KAZUHARU
IPC分类号： D06M13/50 , D01F9/22 , D06M13/02 , D06M15/643 , D06M101/00 , D06M101/40
摘要： PROBLEM TO BE SOLVED: To obtain a carbon fiber having a high tensile strength by applying an organic compound and/or a silicone compound formed as particles on the surface of a precursor fiber to suppress the adhesion among monofilaments. SOLUTION: This method for producing a carbon fiber is to form an organic compound and/or a silicone compound as particles and to apply the particles on the surface of a precursor fiber for producing the carbon fiber in order to suppress the direct contact among monofilaments. It is preferable to use the particles of a thermosetting resin or a thermoplastic resin having >=300 deg.C melting point, having

5. 发明专利

JPH08296124A NON-CIRCULAR CROSS SECTION CARBON FIBER AND CARBON FIBER-REINFORCED COMPOSITE MATERIAL 失效
公开(公告)号：JPH08296124A
公开(公告)日：1996-11-12
申请号：JP9889395
申请日：1995-04-24
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , MATSUHISA YOJI , SHIMIZU KAZUHARU
IPC分类号： C08J5/04 , D01F9/22
摘要： PURPOSE: To obtain a non-circular cross section carbon fiber capable of improving the fundamental characteristics of its compressed system and capable of providing a composite material suitable as a structural material. CONSTITUTION: This carbon fiber has a non-circular cross section and the cross- sectional shape is a non-circular shape having at least a symmetric surface passing through the center of the figure, has a rotation symmetric angle θdefined θ=360 deg./n (n is an integer of 1-10), and has a base weight of >=0.1mg/m per a single fiber.

6. 发明专利

JPH05295616A 失效
公开(公告)号：JPH05295616A
公开(公告)日：1993-11-09
申请号：JP612693
申请日：1993-01-18
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , MATSUHISA YOJI , YAMANE SHOJI
IPC分类号： C01B31/04 , C08L33/18 , C08L79/04 , D01F6/18 , D01F6/54 , D01F6/74 , D01F9/20 , D01F9/22 , D01F9/24
摘要： PURPOSE:To provide a precursor capable of producing a carbon fiber exhibiting a high strength, a high elasticity and a high compression strength. CONSTITUTION:This invented precursor for producing a carbon fiber is composed of a mixture of one or two or more kinds of substances selected from a polyimide, a polyamide-imide, a polybenzobisoxazole, a polybenzoxazole, a polyoxadiazole, a polybenzobisthiazole, a polybenzothiazole, a polybenzobisimidazole, a polybenzoimidazole, a polyphenylene vinylene and their precursors with a polyacrylonitrile-based polymer. The method for producing the recursor is another invention in this patent.

7. 发明专利

JPH02242921A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPH02242921A
公开(公告)日：1990-09-27
申请号：JP6454289
申请日：1989-03-15
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , OHARA HARUO , TSUNODA ATSUSHI
IPC分类号： D01F6/18 , D01F6/38 , D01F9/22 , D01F9/32
摘要： PURPOSE:To efficiently obtain a high quality and high performance carbon fiber in a short time by heat treatment of a precursor for carbon fiber production composed of a specific acryl-based copolymer in a fluid bed for disperse means. CONSTITUTION:A precursor for carbon fiber production composed of a copolymer of >=85% acrylonitrile and 1 to 10%, preferably 3 to 8% alkyl ester [preferably propyl ester of (meth)acrylic acid, etc.] of polymerizable unsaturated carboxylic acid is subjected to heat treatment in a fluid bed (preferably being means for subjecting solid heat mediated granules to heat treatment in a fluidized state with a gas and wherein fluidized state of the solid heat mediated granules with an oxidizing gas and heated state at >=240 deg.C coexist in the fluid bed) to provide the objective fiber.

8. 发明专利

JPH1136143A PRECURSOR FOR CARBON FIBER AND PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPH1136143A
公开(公告)日：1999-02-09
申请号：JP19230597
申请日：1997-07-17
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , IZUMI YUKIO , ISHIDA TOMIHIRO
IPC分类号： D06M15/65 , D01F6/18 , D01F9/22 , D06M13/02 , D06M13/51 , D06M13/513 , D06M101/00 , D06M101/40
摘要： PROBLEM TO BE SOLVED: To obtain a precursor for carbon fiber excellent in tensile strength by applying a specific modified silicone oil material to acrylonitrile-based spun yarns and then subjecting it to dehydration and densification treatment. SOLUTION: This precursor for carbon fiber is obtained by subjecting a polyacrylonitrile-based raw liquid material to wet-and-dry spinning, rinsing, and drawing in bath, applying to spun yarns a silicone oil material which comprises an epoxy modified or amino modified silicone having a viscosity of >1,000 cSt at 25 deg.C and modification rate of 0.05 to 10 wt.%, an alkylene oxide modified silicone having a viscosity of >1,000 cSt at 25 deg.C and alkylene oxide modification rate of 10 to 80 wt.%, or a modified silicone having a viscosity of =40% of the nonvolatile component, and then subjecting the silicone-applied yarn to dehydration and densification treatment.

9. 发明专利

JPH1088430A CARBON FIBER, PRECURSOR FOR PRODUCTION OF CARBON FIBER AND PRODUCTION THEREOF 失效
公开(公告)号：JPH1088430A
公开(公告)日：1998-04-07
申请号：JP23813696
申请日：1996-09-09
申请人： TORAY INDUSTRIES
发明人： OKUDA AKIRA , KOBAYASHI MAKOTO
IPC分类号： D01F9/14 , D01F8/08
摘要： PROBLEM TO BE SOLVED: To obtain the subject precursor capable of forming carbon fiber having a uniform structure by performing sheath/core conjugate spinning by using a polyacrylonitrile-based polymer, etc., mixed with a flame retarding element (compound) as a sheath component and a pitch, etc., not containing the flame retarding element as a core component. SOLUTION: This method for producing the precursor of carbon fiber having a maximum concentration part with a flame retarding element at the surface layer of the fiber, is to perform sheath/core conjugate spinning by using a polyacrylonitrile-based polymer mixed with one or more kinds of the flame retarding element (compound) selected from Ti, Zr, Y, Cr, Fe, Al, Ca, Sr, B and a lanthanoid element, a polyacrylonitrile-based polymer copolymerized with a monomer containing the flame retarding element or a pitch mixed with the flame retarding element (compound) as a sheath component and the polyacrylonitrile-based polymer or the pitch not containing the flame retarding element as a core component. Further, the carbon fiber is obtained by a flame resistant treatment and a carbonizing treatment of the precursor.

10. 发明专利

JPH09249747A SILICONE RUBBER, SILICONE RUBBER PARTICLE, PRECURSOR FOR CARBON FIBER, AND CARBON FIBER 失效
公开(公告)号：JPH09249747A
公开(公告)日：1997-09-22
申请号：JP6259196
申请日：1996-03-19
申请人： TORAY INDUSTRIES
发明人： KOBAYASHI MAKOTO , YAMAZAKI KATSUMI , MATSUHISA YOJI
IPC分类号： C08L83/04 , C08G77/04 , D01F9/22 , D06M13/02 , D06M13/248 , D06M13/256 , D06M13/51 , D06M13/513 , D06M15/693 , D06M101/00 , D06M101/40
摘要： PROBLEM TO BE SOLVED: To easily obtain silicone rubber particles having a small size which could not been easily obtained in the prior art and which are usable for producing carbon fibers of a high strength. SOLUTION: Substantially spherical silicone rubber particles having an average diameter of not larger than 1μm are obtained by curing an uncured silicone containing an amino-modified silicone or/and an epoxymodified silicone by irradiation with electron beams. The silicone rubber particles are attached to the surfaces of fibers to obtain a precursor for carbon fibers, and this precursor is burned to obtain carbon fibers having a high strength.

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