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1. 发明专利

JPH0424446B2 失效
公开(公告)号：JPH0424446B2
公开(公告)日：1992-04-27
申请号：JP22577385
申请日：1985-10-09
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , IMAI YOSHITAKA , YAMAMOTO NOBUYUKI , NAKATANI SOJI
IPC分类号： D01F9/22

2. 发明专利

JPS62257422A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPS62257422A
公开(公告)日：1987-11-10
申请号：JP9478386
申请日：1986-04-25
申请人： MITSUBISHI RAYON CO
发明人： IMAI YOSHITAKA , IZUMI JINKO , NAKATANI SOJI , KOBAYASHI TOA
IPC分类号： D01F9/22
摘要： PURPOSE:To produce a carbon fiber having high strength and elastic modulus, by carrying out a multi-stage flame-resisting treatment of an acrylonitrile fiber in an oxidizing atmosphere while controlling the stretching ratio at a specific level and carbonizing the treated fiber. CONSTITUTION:An acrylonitrile fiber bundle having a single filament fineness of 0.3-1.5d and total fiber fineness of 1,000-20,000d is introduced into a flame- resisting treatment furnace consisting of plural furnaces maintained at respective different temperatures and containing oxidizing atmosphere and is stretched under a condition satisfying the formula [k is total stage number of the flame- resisting treatment furnace; rhoo, rhok and rhon are fiber densities (g/ml) of the fed fiber, fiber after the completion of the flame-resisting treatment and fiber after the completion of the n-th treatment, respectively; tn* is treating time (min) in the n-th stage furnace] while suppressing the stretching ratio to

3. 发明专利

JPS62231027A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPS62231027A
公开(公告)日：1987-10-09
申请号：JP6877786
申请日：1986-03-28
申请人： MITSUBISHI RAYON CO
发明人： SASAKI SUSUMU , IMAI YOSHITAKA , NAKATANI SOJI , KOBAYASHI TOA
IPC分类号： D01F9/22
摘要： PURPOSE:To obtain an acrylonitrile-based carbon fiber having high tenacity and elastic modulus, by reducing the unevenness in the flame-resistant treatment of a stock fiber and, at the same time, using a precarbonization step under a specific condition. CONSTITUTION:An acrylonitrile fiber bundle having a single fiber fineness of 0.3-1.5 d and a fiber bundle fineness of 1,000-20,000 d is passed through plural furnaces having oxidizing atmosphere and maintained at different treatment and then passed through a flame-resistance treatment furnace. The flame- resistant treatment is carried out under a condition satisfying the formula [rhoo, pik and pin are density (g/ml) of stock fiber, fiber finished with frame-resistant treatment and fiber passed through n-th frame-resistant treatment furnace, respectively; k is total number of furnaces] until the fiber density reaches 1.34-1.40g/ml. The treated fiber is subjected to precarbonization treatment in an inert gas atmosphere at 300-500 deg.C and a rate of temperature increase of 10-250 deg.C/min. The precarbonized fiber is carbonized at 1,300-1,800 deg.C optionally after heat-treatment at

4. 发明专利

JPS62228867A HORIZONTAL TYPE HEAT TREATING FURNACE FOR MANUFACTURING CARBON FIBER 失效
公开(公告)号：JPS62228867A
公开(公告)日：1987-10-07
申请号：JP7335486
申请日：1986-03-31
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , ANZAI HISAO , YAMAMOTO NOBUYUKI
IPC分类号： F27B9/28 , D01F9/14 , D01F9/32 , D06B3/02

5. 发明专利

JPH034834B2 失效
公开(公告)号：JPH034834B2
公开(公告)日：1991-01-24
申请号：JP7335486
申请日：1986-03-31
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , ANZAI HISAO , YAMAMOTO NOBUYUKI
IPC分类号： F27B9/28 , D01F9/14 , D01F9/32 , D06B3/02

6. 发明专利

JPS6375120A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPS6375120A
公开(公告)日：1988-04-05
申请号：JP21700086
申请日：1986-09-17
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , KODAMA YOICHI
IPC分类号： B65H59/04 , D01F9/14 , D01F9/22 , D01F9/32
摘要： PURPOSE:To efficiently control taking out tension of yarn with a simple appara tus, by providing a electromagnetic brake to each axis for mounting a bobbin, making up a number of electromagnetic brakes as one set, connecting the brakes to common controllers for each set and, controlling exciting currents. CONSTITUTION:An electromagnetic brake is provided to each axis for mounting a bobbin, when fiber bundles of a organic polymer are taken out from a number of bobbins, paralleled and sent out to the following process. Then, at least 50 electromagnetic brakes are made up as one set and one controller is provided for each set to regulate the exciting current of each electromagnetic brake. Thereby, taking out tension of yarn from plural bobbins is collectively con trolled.

7. 发明专利

JPS62231026A PRODUCTION OF CARBON FIBER 失效
公开(公告)号：JPS62231026A
公开(公告)日：1987-10-09
申请号：JP6877686
申请日：1986-03-28
申请人： MITSUBISHI RAYON CO
发明人： SASAKI SUSUMU , IMAI YOSHITAKA , NAKATANI SOJI , KOBAYASHI TOA
IPC分类号： D01F9/22
摘要： PURPOSE:To obtain an acrylonitrile-based carbon fiber having high tenacity and elastic modulus, by reducing the unevenness in the flame-resistant treatment of a stock fiber and, at the same time, using a precarbonization step under a specific condition. CONSTITUTION:An acrylonitrile fiber bundle having a single fiber fineness of 0.3-1.5 d and a fiber bundle fineness of 1,000-20,000 d is passed through plural process furnaces having oxidizing atmosphere and maintained at different temperatures within 200-350 deg.C and then passed through a flame-resistant treatment furnace. The flame-resistant treatment is carried out under a condition satisfying the formula [rhoo, rhok and rhon are density (g/ml) of stock fiber, fiber finished with frame-resistant treatment and fiber passed through n-th frame- resistant treatment furnace; k is total number of furnaces] until the fiber density reaches 1.34-1.40g/ml. The treated fiber is subjected to heat-treatment in an inert gas atmosphere at 300-500 deg.C under tension, stretched by 0-10% in an inert gas stream at 500-800 deg.C and carbonized at 1,300-1,800 deg.C.

8. 发明专利

JPS6285032A MULTI-STAGE PROCESS FOR PREOXIDATION OF ACRYLONITRILE POLYMER FIBER BUNDLE 失效
公开(公告)号：JPS6285032A
公开(公告)日：1987-04-18
申请号：JP22577385
申请日：1985-10-09
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , IMAI YOSHITAKA , YAMAMOTO NOBUYUKI , NAKATANI SOJI
IPC分类号： D01F9/22
摘要： PURPOSE:Multi-stage preoxidation is effected under conditions where the fiber density after treatment in individual stages satisfy a specific relation so that the fiber density after the completion of preoxidation treatment falls into a specific range of values to give preoxidized fibers which can withstand elongation treatment in spite of high-speed preoxidation process. CONSTITUTION:The fibers from an acrylonitrile copolymer containing more than 90wt% of acrylonitrile and less than 10wt% of other copolymerizable vinyl monomers are subjected to preoxidation treatment, so that the density of the preoxidized fibers which have passed through the n-th stage furnace among the plurality of preoxidation furnaces satisfies the conditions specified by the equations [rhon is density of the fiber after the n-stage treatment (g/cc); rho0 is the density of the starting acrylonitrile polymer fibers (g/cc); rhok is the density of the fibers after completion of preoxidation treatment and in the range from 1.34-1.40g/cc; tn is the treating time in the n-stage; k is stages of preoxidation]. Preoxidized fibers that can be drawn 3-25% in the carboniza tion are obtained.

9. 发明专利

JPH034833B2 失效
公开(公告)号：JPH034833B2
公开(公告)日：1991-01-24
申请号：JP7335386
申请日：1986-03-31
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , ANZAI HISAO , YAMAMOTO NOBUYUKI
IPC分类号： F27B9/28 , D01F9/14 , D01F9/32 , D06B3/02

10. 发明专利

JPH034832B2 失效
公开(公告)号：JPH034832B2
公开(公告)日：1991-01-24
申请号：JP7335286
申请日：1986-03-31
申请人： MITSUBISHI RAYON CO
发明人： KOBAYASHI TOA , ANZAI HISAO , YAMAMOTO NOBUYUKI
IPC分类号： F27B9/28 , D01F9/14 , D01F9/32 , D06B3/02

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