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    • 3. 发明专利
    • Carbon fiber and method for producing the same
    • 碳纤维及其制造方法
    • JP2009030189A
    • 2009-02-12
    • JP2007193367
    • 2007-07-25
    • Teijin Ltd帝人株式会社
    • SAKURAI HIROSHIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145
    • PROBLEM TO BE SOLVED: To provide a carbon fiber which can solve a problem that mesophase pitch having an extremely high or low softening point can not be used as a raw material for the carbon fiber, and can suitably be used as a heat-releasing material or a resin-reinforcing material, and to provide a method for producing the carbon fiber.
      SOLUTION: The method for producing the carbon fibers includes: properly preparing a pitch mixture having at least two or more mesophase pitch raw materials having different softening points, obtaining carbon fiber precursors from the melted product of the pitch mixture by a melt blow method, and then infusibilizing and calcining the carbon fiber precursors.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 待解决的问题:为了提供可以解决难以使用具有极高或低软化点的中间相沥青作为碳纤维原料的碳纤维,并且可以适当地用作热 释放材料或树脂增强材料,并提供碳纤维的制造方法。 解决方案:制备碳纤维的方法包括:适当地制备具有至少两个或多个具有不同软化点的中间相沥青原料的沥青混合物,通过熔融吹制从沥青混合物的熔融产物中获得碳纤维前体 方法,然后对碳纤维前体进行消融和煅烧。 版权所有(C)2009,JPO&INPIT
    • 4. 发明专利
    • Pitch-based graphitized staple fiber
    • 基于PITCH的GRAPHITIZED STAPLE FIBER
    • JP2009275323A
    • 2009-11-26
    • JP2008129548
    • 2008-05-16
    • Teijin Ltd帝人株式会社
    • SAKURAI HIROSHIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145B29B11/16C01B31/04
    • PROBLEM TO BE SOLVED: To provide a pitch-based graphitized staple fiber slight in the possibility of causing the setting inhibition of a thermosetting resin even if kneaded with the resin.
      SOLUTION: The pitch-based graphitized staple fiber has the following characteristics: (i) The average fiber diameter observed by optical microscope is larger than 2 μm but not larger than 20 μm, and the fiber diameter distribution percentage based on the average fiber diameter is 3-20%. (ii) The fiber surface observed by scanning electron microscope is substantially flat. (iii) When the five fibers' ends, whose graphene sheet edge faces have the whole length of longer than 50 nm but shorter than 300 nm, are observed by transmission electron microscope, the average value of the closure percentage represented by formula (1), closure percentage (%)=B/A×100 (A is the whole length (nm) of the graphene sheet edge face of the fiber end; and B is the length (nm) of portion where the edge face is curved U-shaped fashion), is greater than 80% but less than 100%.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供一种沥青基石墨化短纤维,即使与树脂捏合也可能导致热固性树脂的凝固抑制。

      解决方案:沥青基石墨化短纤维具有以下特点:(i)通过光学显微镜观察到的平均纤维直径大于2μm但不大于20μm,并且基于平均值的纤维直径分布百分比 纤维直径为3-20%。 (ii)通过扫描电子显微镜观察的纤维表面基本上平坦。 (iii)当通过透射电子显微镜观察其石墨烯片边缘面的整个长度大于50nm但小于300nm的五个纤维末端时,由式(1)表示的封闭百分比的平均值 ,闭合百分率(%)= B / A×100(A是纤维端部的石墨烯片边缘面的全长(nm); B是边缘面弯曲的部分的长度(nm) 形状时尚)大于80%但小于100%。 版权所有(C)2010,JPO&INPIT

    • 5. 发明专利
    • Method for preparing carbon fiber
    • 制备碳纤维的方法
    • JP2009084763A
    • 2009-04-23
    • JP2007258780
    • 2007-10-02
    • Teijin Ltd帝人株式会社
    • ONOE SHUHEIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145
    • PROBLEM TO BE SOLVED: To provide a method for preparing a carbon fiber at high yield by stabilizing infusibilization reaction by maintaining a certain state of the penetration of an oxidizing gas regardless of the fluctuation in basis weight of a precursor mat of a carbon fiber and regardless of the clogging of its protection filter for protecting a heating device without using a shape-retention mechanism.
      SOLUTION: The method for preparing a carbon fiber employs a continuous-charge type infusibilization furnace having a plurality of chambers in series in a direction of transferring a carbon-fiber precursor mat 16, having the function of circulating an oxidizing gas in the furnace, and having an air feeding/discharging function, in an infusibilization step by measuring a face wind velocity V of the oxidizing gas penetrating the carbon-fiber precursor mat 16 in each of the chambers to control the velocity V to be the target value ±10% by adjusting the pressure of circulating air according to the rate of change in the velocity V. The method for preparing a carbon fiber is further measures the amount of air supplied (Q1) and the amount of air exhausted (Q2) at the individual chambers of the infusibilization furnace to control the ratio of Q1 to Q2, Q1/Q2 to be 1.0±0.3 by varying the amount of air supplied (Q1) and the amount of air exhausted (Q2) according to the variation in pressure of air circulating therein.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 待解决的问题:提供一种通过保持一定的氧化性气体渗透状态来稳定化不良反应而以高产率制备碳纤维的方法,而不管碳的前体垫的基重如何变化 而且不管其保护过滤器是否堵塞,用于保护加热装置而不使用形状保持机构。 解决方案:制备碳纤维的方法采用连续充电型熔融炉,该连续充电型熔融炉具有沿着转移碳纤维前体垫16的方向串联的多个室,该碳纤维前体垫16具有使氧化气体循环的功能 炉,具有供气/排气功能,通过测量渗透到每个室中的碳纤维前体垫16的氧化气体的面风速V来控制速度V为目标值± 通过根据速度V的变化率调节循环空气的压力,10%。用于制备碳纤维的方法进一步测量供应的空气量(Q1)和个体排出的空气量(Q2) 通过根据压力变化改变供应空气量(Q1)和排出的空气量(Q2)来控制Q1至Q2的比率,Q1 / Q2的比值为1.0±0.3 的空气循环。 版权所有(C)2009,JPO&INPIT
    • 6. 发明专利
    • Carbon fibers and method for producing the same
    • 碳纤维及其制造方法
    • JP2008285797A
    • 2008-11-27
    • JP2007133995
    • 2007-05-21
    • Teijin Ltd帝人株式会社
    • SAKURAI HIROSHIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145
    • PROBLEM TO BE SOLVED: To provide a method for producing carbon fibers, by which the homogeneous carbon fibers can be produced, while preventing the generation of a fishhook-like form at the ends of the fibers.
      SOLUTION: The method for producing carbon fibers includes producing carbon fiber precursors from a mesophase pitch by a melt-spinning method, wherein the product (shear stress) of the melt viscosity of the mesophase pitch in a capillary and the shear rate of the mesophase pitch in the capillary is 10 to 200 kPa, infusibilizing the obtained carbon fiber precursors, and then calcinating the treated products.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种生产碳纤维的方法,通过该方法可以制造均匀的碳纤维,同时防止在纤维的端部产生鱼钩形状。 解决方案:碳纤维的制造方法包括通过熔融纺丝法从中间相沥青制造碳纤维前体,其中毛细管中的中间相沥青的熔体粘度的产物(剪切应力)和剪切速率 毛细管中的中间相沥青为10〜200kPa,对得到的碳纤维前体进行填充,然后煅烧处理物。 版权所有(C)2009,JPO&INPIT
    • 8. 发明专利
    • Carbon fibers and method for producing the same
    • 碳纤维及其制造方法
    • JP2008285795A
    • 2008-11-27
    • JP2007133993
    • 2007-05-21
    • Teijin Ltd帝人株式会社
    • SAKURAI HIROSHIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145
    • PROBLEM TO BE SOLVED: To provide carbon fibers which have at least a concentric structure at part of a cross-sectional structure, and have excellent mechanical characteristics, heat-radiating characteristics and a uniform crushing property.
      SOLUTION: The method for producing carbon fibers includes producing carbon fiber precursors from a mesophase pitch by a melt-blow method, wherein the melt viscosity and flow rate of the mesophase pitch in a capillary are 3 to 8 Pa s and 0.10 to 1.20 m/s, respectively, applying an infusibilizing treatment to the carbon fiber precursors, and then applying a calcination treatment to the treated products.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供在横截面结构的一部分具有至少同心结构的碳纤维,并且具有优异的机械特性,散热特性和均匀的破碎性能。 解决方案:碳纤维的制造方法包括通过熔喷法从中间相沥青制造碳纤维前体,其中毛细管中的中间相沥青的熔体粘度和流速为3〜8Pa·s,0.10〜 1.20m / s,对碳纤维前体进行渗透处理,然后对处理过的产品进行煅烧处理。 版权所有(C)2009,JPO&INPIT
    • 9. 发明专利
    • Carbon fiber and method for producing the same
    • 碳纤维及其制造方法
    • JP2009191391A
    • 2009-08-27
    • JP2008031923
    • 2008-02-13
    • Teijin Ltd帝人株式会社
    • SAKURAI HIROSHIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145
    • PROBLEM TO BE SOLVED: To provide a carbon fiber that is suitably usable as an electrode material of an electric double layer capacitor, a heat radiation material, and a resin reinforcing material, and to provide a method for producing the same.
      SOLUTION: The method for producing a carbon fiber includes (a) a spinning step of obtaining a carbon fiber precursor from a mesophase pitch by a melt blowing method, (b) an infusibilizing method for infusibilizing the carbon fiber precursor obtained by the previous step (a) to give an infusibilized carbon fiber precursor, (c) a baking step of baking the infusibilized carbon fiber precursor obtained by the previous step (b) in an inert gas atmosphere containing 20-5,000 ppm oxidizing gas at 500-1,000°C for 5-120 minutes to give a carbon fiber, and (d) a grinding step of grinding the carbon fiber obtained by the previous step (c).
      COPYRIGHT: (C)2009,JPO&INPIT
    • 解决的问题:提供适合用作双电层电容器,散热材料和树脂增强材料的电极材料的碳纤维,并提供其制造方法。 <解决方案>碳纤维的制造方法包括(a)通过熔喷法从中间相沥青得到碳纤维前体的纺丝工序,(b)将由 上述步骤(a)给出一种不熔化的碳纤维前体,(c)烘烤步骤,将前述步骤(b)得到的不熔化碳纤维前体在含有20-5,000ppm氧化气体的惰性气体气氛中焙烧500-1,000 ℃的温度下进行5-120分钟,得到碳纤维,(d)研磨由上述工序(c)得到的碳纤维的研磨工序。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Carbon fiber and method for producing the same
    • 碳纤维及其制造方法
    • JP2009030190A
    • 2009-02-12
    • JP2007193368
    • 2007-07-25
    • Teijin Ltd帝人株式会社
    • SAKURAI HIROSHIHARA HIROSHITAKAGI SHOICHI
    • D01F9/145
    • PROBLEM TO BE SOLVED: To provide a method for producing carbon fibers, by which two or more mesophase pitch raw materials having different toluene-insoluble contents and having been difficult to use can effectively be used, and by which the carbon fibers can effectively be produced in stable conditions.
      SOLUTION: This method for producing the carbon fibers includes: spinning the melted product of a pitch mixture having two mesophase pitch raw materials having different toluene insoluble contents (TI) and then obtaining the carbon fibers through an infusibilizing step and a calcination step.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 待解决的问题:提供一种生产碳纤维的方法,通过该方法可以有效地使用具有不同甲苯不溶物含量并且难以使用的两种或更多种中间相沥青原料,通过该碳纤维可以使碳纤维 有效地在稳定的条件下生产。 解决方案:这种碳纤维的制造方法包括:将具有不同甲苯不溶成分(TI)的两个中间相沥青原料的沥青混合物的熔融物纺丝,然后通过混合步骤和煅烧步骤获得碳纤维 。 版权所有(C)2009,JPO&INPIT