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1. 发明授权

US06241923B1 Process for the production of carbon fibers 失效
标题翻译：碳纤维生产工艺
公开(公告)号：US06241923B1
公开(公告)日：2001-06-05
申请号：US09335740
申请日：1999-06-18
申请人： Yukio Sakai
发明人： Yukio Sakai
IPC分类号： D01F9145
CPC分类号： D01F9/145
摘要： A process for the production of carbon fibers, including melt-spinning mesophase pitch having an optically anisotropic content of at least 90%, a softening point of 190° C. to 280° C. and a heating weight loss of 0.7% by weight or less at a spinning temperature to form a spun fiber, infusibilizing the spun fiber to obtain an infusible fiber and carbonizing the infusible fiber.
摘要翻译：一种生产碳纤维的方法，包括具有至少90％的光学各向异性含量的熔融纺丝中间相沥青，软化点为190℃至280℃，加热重量损失为0.7重量％，或在纺丝温度较低的条件下形成纺丝纤维，使纺丝纤维融合，得到不熔纤维，并将不熔纤维碳化。

2. 发明授权

US06228343B1 Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes 失效
标题翻译：制造各向同性沥青，活性炭纤维和非水性二次电池阳极用碳材料的方法
公开(公告)号：US06228343B1
公开(公告)日：2001-05-08
申请号：US09293249
申请日：1999-04-16
申请人： Takahumi Yoshimura , Koichi Kanno , Yasuhiro Hirai , Yukio Sakai , Nobuyuki Koike , Yuzuru Takahashi , Hitoshi Sakamoto , Jitsuo Oishi , Takaaki Higashiizumi , Kyoko Shibahara
发明人： Takahumi Yoshimura , Koichi Kanno , Yasuhiro Hirai , Yukio Sakai , Nobuyuki Koike , Yuzuru Takahashi , Hitoshi Sakamoto , Jitsuo Oishi , Takaaki Higashiizumi , Kyoko Shibahara
IPC分类号： D01F9145
CPC分类号： D01F9/145 , C10C3/00 , C10C3/04 , H01M4/133 , H01M4/587 , H01M2004/021
摘要： A method for preparing a modified optically isotropic pitch comprising, preparing a synthetic pitch by reacting a member selected from the group consisting of a conjugated polycyclic hydrocarbon containing a low molecular weight alkyl group or a material containing such a substituted hydrocarbon in the presence of hydrofluoric acid/boron trifluoride, and treating the synthetic pitch by passing an oxidizing gas through the synthetic pitch at elevated temperatures.
摘要翻译：一种制备改性光学各向同性沥青的方法，包括：在氢氟酸存在下使选自低分子量烷基的共轭多环烃或含有取代的烃的物质反应制备合成沥青 /三氟化硼，并且通过在高温下使氧化气体通过合成沥青来处理合成沥青。

3. 发明授权

US06524501B1 Pitch fiber bundle and pitch type carbon fiber bundle and method for production thereof 有权
标题翻译：沥青纤维束和沥青类碳纤维束及其制造方法
公开(公告)号：US06524501B1
公开(公告)日：2003-02-25
申请号：US09657780
申请日：2000-09-08
申请人： Yutaka Arai , Yoshiyuki Doken , Tsutomu Nakamura
发明人： Yutaka Arai , Yoshiyuki Doken , Tsutomu Nakamura
IPC分类号： D01F9145
CPC分类号： D01F9/145 , Y10T428/2918
摘要： This invention provides a pitch fiber bundle for carbon fibers of small size, a carbon fiber bundle, and a method for the production thereof, i.e. a method for the production of carbon fibers of a small size, a pitch fiber bundle, and a carbon fiber bundle at a lower cost with higher productivity than usual. The method for the production of pitch type carbon fibers according to this invention comprises dividing a plurality of pitch fibers into not less than two bundles, intertwining the bundles by exposure to currents of air thereby forming a first fiber bundle, binding a plurality of such first fiber bundles, and again intertwining the bound pitch fiber bundles by exposure to currents of air thereby forming a second fiber bundle.
摘要翻译：本发明提供一种小尺寸碳纤维用沥青纤维束，碳纤维束及其制造方法，即生产小型碳纤维，沥青纤维束和碳纤维的方法以较低的成本捆绑，生产率高于平常水平。根据本发明的沥青型碳纤维的生产方法包括将多根沥青纤维分成不少于两束，通过暴露于空气流中缠绕束，由此形成第一纤维束，将多个这样的第一纤维束，并且通过暴露于空气的电流，再次缠绕结合的沥青纤维束，从而形成第二纤维束。

4. 发明授权

US06303095B1 Milled carbon fiber and process for producing the same 失效
标题翻译：研磨碳纤维及其制造方法
公开(公告)号：US06303095B1
公开(公告)日：2001-10-16
申请号：US08306610
申请日：1994-09-15
申请人： Yoshiyuki Nishimura , Hiroshi Ejiri
发明人： Yoshiyuki Nishimura , Hiroshi Ejiri
IPC分类号： D01F9145
CPC分类号： D01F9/322 , D01F9/145 , Y10T428/2918
摘要： Milled carbon fibers are provided which have a fiber cut surface and a fiber axis intersecting with each other at cross angles, the smaller one thereof being at least 65° on the average. The milled carbon fibers may have a specific surface area as measured by the BET method of 0.2 to 10 m2/g. The milled carbon fibers may be obtained by a process comprising melt spinning of mesophase pitch, infusibilization, milling of the infusibilized pitch fibers as obtained or after a primary heat treatment at low temperatures in an inert gas and a high-temperature heat treatment in an inert gas. Even when the graphite layer plane has achieved high-level growth, the above milled carbon fibers have low reactivity with a metal of high temperature or the like during the molding or use thereof because the proportion of reactive exposed surface of the inner portion of the fiber is small, so that the use of the milled carbon fibers can improve the mechanical strength and high-temperature heat resistance of the composite material.
摘要翻译：提供了具有纤维切割表面和纤维轴线交叉相交的磨细碳纤维，其中较小的一个纤维平均至少为65°。研磨的碳纤维可以具有通过BET法测量的比表面积为0.2至10m 2 / g。研磨的碳纤维可以通过包括中间相沥青的熔融纺丝，不熔化，所得到的不熔化沥青纤维的研磨或在惰性气体中的低温初次热处理和惰性气体的高温热处理中的方法获得加油站。即使当石墨层平面达到高水平生长时，上述研磨碳纤维在模制或使用期间与高温等金属的反应性低，因为纤维内部的反应性暴露表面的比例因此使用研磨的碳纤维可以提高复合材料的机械强度和耐高温性。

5. 发明授权

US06171696B2 Method for producing carbon fiber, carbon fiber, prepreg, and molded article from fiber-reinforced composite material 有权
标题翻译：从纤维增强复合材料制造碳纤维，碳纤维，预浸料和模塑制品的方法
公开(公告)号：US06171696B2
公开(公告)日：2001-01-09
申请号：US09316246
申请日：1999-05-21
申请人： Shinichi Takemura , Yoshio Soda , Hideyuki Ohno , Yutaka Arai , Tomohiro Nakanishi
发明人： Shinichi Takemura , Yoshio Soda , Hideyuki Ohno , Yutaka Arai , Tomohiro Nakanishi
IPC分类号： D01F9145
CPC分类号： D01F9/15 , D01F9/145 , Y10T428/24994 , Y10T428/29 , Y10T428/2964 , Y10T428/298 , Y10T442/2008 , Y10T442/603
摘要： The resent invention provides a carbon fiber which enables a molded article produced from a fiber-reinforced composite material using the carbon fiber to exhibit excellent flexibility and to be freed from defects such as bending. According to the method of the present invention the carbon fiber is produced by a two-stage infusibilizing process, namely carrying out a first-stage infusibilization of a pitch-based fiber, which is obtained from mesophase pitch having a softening point of 200 to 400° C. and a true density of 1.30 to 1.38 g/cm3, in a mixed gas atmosphere having a nitrogen dioxide concentration of 1 to 5% by volume and an oxygen concentration of 5 to 50% by volume, the balance being an inert gas or steam, at a temperature between 100 and 200° C. and then carrying out a second-stage infusibilization of the product of the first-stage infusibilization in a mixed gas atmosphere having a nitrogen dioxide concentration of 0.1 to 5% by volume and an oxygen concentration of 5 to 40% by volume, the balance being an inert gas or a mixture of the inert gas and steam, at a temperature between 200 and 350° C.
摘要翻译：本发明提供了一种碳纤维，其使得使用碳纤维的纤维增强复合材料制成的模制品显示出优异的柔性并且不会产生诸如弯曲的缺陷。根据本发明的方法，碳纤维是通过两阶段渗透法生产，即进行沥青基纤维的第一阶段熔融，其由软化点为200-400℃的中间相沥青获得，真密度为1.30-1.38g / cm3，在二氧化氮浓度为1〜5体积％，氧浓度为5〜50体积％，余量为惰性气体或蒸汽的混合气体气氛中，温度为100〜200℃ 然后在二氧化氮浓度为0.1〜5体积％，氧浓度为5〜40体积％的混合气体气氛中进行第一阶段生产的产品的第二阶段的混合，在余量为惰性气体或惰性气体与蒸汽的混合物之间，温度为200-350℃。

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