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1. 发明专利

JPH07277801A CARBON FIBER REINFORCED CONCRETE 失效
公开(公告)号：JPH07277801A
公开(公告)日：1995-10-24
申请号：JP8522994
申请日：1994-04-01
申请人： MITSUBISHI RAYON CO , KAJIMA CORP
发明人： IMAI YOSHITAKA , KAGEYAMA YOSHITAKA , TAKEI YOSHIKAZU , SUENAGA TATSUO , SATOYAMA KIMIHARU
IPC分类号： C04B14/38 , C04B20/10 , C04B28/02 , C04B41/88 , C04B111/26
摘要： PURPOSE:To improve resistance to metal corrosion by using carbon fibers surface-plated with a metal. CONSTITUTION:The surfaces of carbon fibers are plated with a metal whose electrode potential is nobler than that of iron and baser than that of the carbon fibers. The metal plated carbon fibers are dispersed in concrete by 0.1-20vol.%.

2. 发明专利

JPH0633531B2 失效
公开(公告)号：JPH0633531B2
公开(公告)日：1994-05-02
申请号：JP24892884
申请日：1984-11-26
申请人： MITSUBISHI RAYON CO
发明人： IMAI YOSHITAKA , NAKATANI SOJI
IPC分类号： D01F9/22

3. 发明专利

JPH03220321A DEVICE FOR CARRYING OUT FLAME-RESISTING TREATMENT 失效
公开(公告)号：JPH03220321A
公开(公告)日：1991-09-27
申请号：JP3950490
申请日：1990-02-20
申请人： MITSUBISHI RAYON CO
发明人： IMAI YOSHITAKA , DAIGUUJI TSUTOMU , ANZAI HISAO , YAMAMOTO NOBUYUKI , KODAMA YOICHI
IPC分类号： F27B9/28 , D01F9/32 , F27D9/00
摘要： PURPOSE:To prevent fusion and explosion-like reaction and treat a precursor fiber at high speed by constituting a device so as to partition a roller chamber and heat treatment chamber, blow heated air over the precursor fiber in heat treatment chamber and alternately pass a precursor fiber through space between both chambers at desired temperature and time. CONSTITUTION:A device is constituted so as to partition roller chambers 11a and 11b and heat treatment chamber 8 and alternately pass a precursor fiber 1 through the space between both chambers and ambient temperature in both chambers is specified and passage time per time passing the fiber through a heat-treating chamber is specified. When the fiber passes through the inside of heat-treating chamber, heated air is blown over the fiber.

4. 发明专利

JPH026625A PRODUCTION OF FLAME-RESISTANT FIBER 失效
公开(公告)号：JPH026625A
公开(公告)日：1990-01-10
申请号：JP15573088
申请日：1988-06-23
申请人： MITSUBISHI RAYON CO
发明人： DAIGUUJI TSUTOMU , IMAI YOSHITAKA
IPC分类号： D01F9/22 , D01F9/32
摘要： PURPOSE:To safely obtain the subject fiber giving a high-performance carbon fiber in high efficiency by treating an acrylonitrile fiber with a roller-treating apparatus having porous structure at the face contacting with the fiber and blasting a hot oxidizing gas through the porous plate. CONSTITUTION:The objective fiber is produced by contacting an acrylonitrile fiber with a roller-treating apparatus having a fiber-contacting face composed of a porous plate or a combination of a porous plate and a mesh or slit structure and having a structure to blast an oxidizing gas of 200-300 deg.C through said contacting face. Preferably, the oxidizing gas is generally air. The blasting of heated oxidizing gas from the fiber-contacting face of the roller is performed by integrating a hot-air circulation apparatus in the roller.

5. 发明专利

JPH01148816A PRODUCTION OF FLAME-RESISTANT FIBER 失效
公开(公告)号：JPH01148816A
公开(公告)日：1989-06-12
申请号：JP30667987
申请日：1987-12-03
申请人： MITSUBISHI RAYON CO
发明人： DAIGUUJI TSUTOMU , IMAI YOSHITAKA
IPC分类号： D01F9/22 , D01F9/14 , D01F9/32
摘要： PURPOSE:To obtain the title fiber in high efficiency with safe, also in a short time, by putting an acrylonitrile fiber to flame resistance-affording treatment using a conduction heating system in an oxidative atmosphere with the concentration of the oxidative gas at or higher than a specified level. CONSTITUTION:Acrylonitrile fiber bundles 4 are heated by a conduction heating system where said bundles 4 are introduced into a bed packed with spherical particles 3 of a size of >=1mm such as of glass or stainless steel heated to pref. 250 to 350 deg.C, being subjected to flame resistance-affording treatment in an oxidative atmosphere such as oxygen or air with the concentration of the oxidative gas at >=20vol.%, thus obtaining the objective fiber.

6. 发明专利

JPS62257424A PRODUCTION OF CARBON FIBER HAVING HIGH STRENGTH AND ELASTIC MODULUS 失效
公开(公告)号：JPS62257424A
公开(公告)日：1987-11-10
申请号：JP9478586
申请日：1986-04-25
申请人： MITSUBISHI RAYON CO
发明人： IMAI YOSHITAKA , NAKATANI SOJI , KOBAYASHI TOA
IPC分类号： D01F9/22
摘要： PURPOSE:To produce a high-performance carbon fiber free from microvoids, by carrying out multi-stage flame-resisting treatment of an acrylonitrile fiber while controlling the fiber density within a specific range and subjecting the treated fiber to a low-temperature treatment and a high-temperature treatment. CONSTITUTION:A fiber bundle having a single filament fineness of 0.5-1.8d is introduced into plural treatment furnaces maintained at respective different temperatures within 200-300 deg.C and containing oxidizing atmosphere and is treated under a condition satisfying the formula [k is number of stages; rhoo, rhon and rhok are densities (g/ml) of fed fiber, fiber after the n-th treatment and fiber after the completion of the treatment, respectively; tn is treating time (min) of the n-th treatment] in a manner to give a treated fiber density of 1.34-1.40g/ml. The obtained flame-resisting fiber is subjected to low-temperature heat-treatment at 300-700 deg.C in an inert gas atmosphere and then to high- temperature treatment at a treatment-initiation temperature of 1,000-1,300 deg.C and a maximum temperature of 1,350-1,900 deg.C in an inert gas atmosphere.

7. 发明专利

JPS62250227A HIGH-PERFORMANCE CARBON FIBER FROM ACRYLIC FIBER 失效
公开(公告)号：JPS62250227A
公开(公告)日：1987-10-31
申请号：JP8824786
申请日：1986-04-18
申请人： MITSUBISHI RAYON CO
发明人： IMAI YOSHITAKA , YOSHIDA KANJI , MARUYAMA YOSHIAKI
IPC分类号： D01F9/22
摘要： PURPOSE:The title fiber which has specific ranges of nitrogen content, crystal orientation, the expansion and laminar thickness of carbon network in the carbon fiber, thus giving carbon fiber composite materials which are used in primary structure in the fields of air craft and space, because of its high tenac ity and medium elasticity. CONSTITUTION:The objective carbon fiber has 40-65Angstrom of La, which is determined by X-ray diffractometry and shows the expansion of carbon network in the carbon fiber, 17-28Angstrom of Lc, which shows the laminar thickness of the network, more than 81% of crystal orientation, which is determined from the profile in the azimuth direction of (002) diffraction, 0.5-2.5wt% of nitrogen content, more than 450kg/mm tenacity and 26-33tons/mm modulus according to the strand-testing method. The fiber is obtained by preoxidizing the precursor prepared by making an acrylonitrile copolymer into filaments, in an oxidative atmosphere at 200-400 deg.C under gradual temperature-increasing condition and carbonizing the preoxidized filaments in an inert atmosphere at low temperature of 300-700 deg.C, then at high temperature of 1,000-1,900 deg.C.

8. 发明专利

JPS60235709A CARBON FILM 失效
公开(公告)号：JPS60235709A
公开(公告)日：1985-11-22
申请号：JP9077784
申请日：1984-05-07
申请人： MITSUBISHI RAYON CO
发明人： TANAKA MASAHIRO , FUSHIIE TAKASHI , FUKUI YUUICHI , IMAI YOSHITAKA
IPC分类号： C04B35/52 , C01B31/02 , C01B31/04
摘要： PURPOSE:A carbon film that is obtained by forming a specific acrylonitrile polymer into a film and roasting it, thus showing high mechanical strength and high electroconductivity. CONSTITUTION:An acrylonitrile polymer consisting of more than 60wt% of acrylonitrile and less than 40wt% of other polymerizable monomers such as methacrylic acid is dissolved in a solvent such as dimethylformamide, the solution is extruded through a die or slit nozzle into a film, drawn, washed and dried to form a precursor film of acrylonitrile of 0.1-100mum thickness. Then, the film is heat-treated at 200-350 deg.C in an oxidative atmosphere to get flame-resistant structure and heated at 400-3,000 deg.C in an inert atmosphere to give the objective carbon film.

9. 发明专利

JPS59150116A Production of high-strength carbon fiber 失效
标题翻译：生产高强度碳纤维
公开(公告)号：JPS59150116A
公开(公告)日：1984-08-28
申请号：JP2126683
申请日：1983-02-10
申请人： Mitsubishi Rayon Co Ltd
发明人： TANUKI YOSHITERU , IMAI YOSHITAKA , NAKATANI SOUJI
IPC分类号： D01F9/22
摘要： PURPOSE: Preoxidized fibers resulting from treating acrylonitrile synthetic fibers so that they reach a specific density are heat-treated in 2 stages under tension in an inert atmosphere, then the temperature is further raised and heat treatment is effected to produce the titled fibers of remarkably increased tensile strength.
CONSTITUTION: Acrylonitrile synthetic fibers are preoxidized in a preoxidizer so that their density becomes 1.25W1.37g/cm
3 , then the resultant preoxidized fibers are heat treated at 300W500°C under tension in an inert atmosphere, subsequently at 500W800°C under increased tension in an inert atmosphere, and at over 800°C in an inert atmosphere to give the objective carbon fibers.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：将丙烯腈合成纤维处理得到的预氧化纤维在惰性气氛下在2个阶段内进行热处理，然后进一步提高温度，进行热处理，得到明显增加的标准纤维抗拉强度。构成：将丙烯腈合成纤维在预氧化剂中进行预氧化，使其密度为1.25-1.37g / cm 3，然后将所得预氧化纤维在300-500℃下在惰性气氛下在张力下进行热处理，随后在500℃ -800摄氏度，在惰性气氛中，在超过800摄氏度的惰性气氛中，增加张力，得到目标碳纤维。

10. 发明专利

JPH08143350A CARBON FIBER FOR REINFORCING CEMENT AND PRODUCTION OF CONCRETE USING THE SAME 失效
公开(公告)号：JPH08143350A
公开(公告)日：1996-06-04
申请号：JP21832894
申请日：1994-08-22
申请人： MITSUBISHI RAYON CO , KAJIMA CORP
发明人： IMAI YOSHITAKA , KAGEYAMA YOSHITAKA , TAKEI YOSHIKAZU , KOBAYASHI MIKIO , SUENAGA TATSUO , SATOYAMA KIMIHARU
IPC分类号： C04B14/38 , D01F9/22 , D06M13/02 , D06M13/322 , D06M13/402 , D06M15/267 , D06M101/00 , D06M101/40
摘要： PURPOSE: To produce a concrete reinforced with a carbon fiber and having large bending strength by dispersing the carbon fiber having a ζ-potential more than a specified value measured by a streaming potential method in a cement matrix. CONSTITUTION: After subjecting the carbon fiber (e.g. carbon fiber derived from polyacrylonitrile) to an electrolytic oxidation treatment usually applied, the fiber is treated with a cationic polymer (e.g. polydimethylaminoethyl acrylate-methylchloride quaternary salt), a cationic surfactant (e.g. lauryltrimethylammonium chloride) or a silane coupling agent (e.g. aminopropyl- triethoxysilane). In this way, the carbon fiber for reinforcing in which the surface ζ-potential measured by the streaming potential method is >=-10mV in an aq. soln. of pH11-13 same with the cement. Then, this carbon fiber is dispersed in the cement matrix. In this way, adhesion and dispersibility of the carbon fiber are increased, and a high-strength concrete reinforced with the carbon fiber is obtained.

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