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公开(公告)号：US20130133819A1
公开(公告)日：2013-05-30
申请号：US13397008
申请日：2012-02-15
Applicant: Young-Ho Choi , Do Suck Han , Chi-Hoon Choi
Inventor： Young-Ho Choi , Do Suck Han , Chi-Hoon Choi
IPC: B29C43/18
CPC classification number: D01D5/24 , D01F1/02 , D01F9/225 , Y10T428/2918 , Y10T428/2973 , Y10T428/2975
Abstract: Disclosed is a method for preparing hollow carbon fibers having an empty space in the cross section thereof. More specifically, the disclosed method includes melt-spinning an acrylonitrile-based polymer by using a supercritical fluid as a plasticizer; drawing spun fibers to prepare hollow precursor fibers; and stabilizing and carbonizing the hollow precursor fibers to prepare the hollow carbon fibers. The hollow carbon fibers obtained by the disclosed method have at least a 10 to 50% lower specific gravity than conventional hollow carbon fibers (solid), but have similar mechanical properties to the conventional fibers. Furthermore, the diameter of carbon fibers can be adjusted, thereby making it possible to widen the application of hollow carbon fibers.
Abstract translation: 公开了一种在其截面中具有空白空间的中空碳纤维的制备方法。 更具体地说，所公开的方法包括使用超临界流体作为增塑剂使丙烯腈系聚合物熔融纺丝; 拉伸纺丝纤维以制备中空前体纤维; 并稳定和碳化中空前体纤维以制备中空碳纤维。 通过所公开的方法获得的中空碳纤维比常规中空碳纤维（固体）具有至少10至50％的比重，但是与常规纤维具有相似的机械性能。 此外，可以调节碳纤维的直径，从而可以扩大中空碳纤维的应用。
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公开(公告)号：US20130130028A1
公开(公告)日：2013-05-23
申请号：US13396009
申请日：2012-02-14
Applicant: Young-Ho Choi , Jeong Min Cho , Do Suck Han , Chi-Hoon Choi
Inventor： Young-Ho Choi , Jeong Min Cho , Do Suck Han , Chi-Hoon Choi
Abstract: Disclosed is a method for preparing a precursor fiber for a carbon fiber. The precursor fiber of fine denier according to the present invention is used to prepare a carbon fiber having excellent tensile strength and compressive strength by a conventional single component spinneret using a superdrawing process to prepare a high strength and high elastic carbon fiber with a reduction in stabilization time.
Abstract translation: 公开了一种制备碳纤维的前体纤维的方法。 根据本发明的细旦尼龙的前体纤维用于制备具有优异的拉伸强度和抗压强度的碳纤维，其通过使用超拉伸工艺的常规单组分喷丝头来制备具有降低稳定性的高强度和高弹性碳纤维 时间。
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公开(公告)号：US09109305B2
公开(公告)日：2015-08-18
申请号：US13396324
申请日：2012-02-14
Applicant: Young-Ho Choi , Do Suck Han , Chi-Hoon Choi
Inventor： Young-Ho Choi , Do Suck Han , Chi-Hoon Choi
CPC classification number: D01D5/24 , D01F9/225 , D02J1/228 , Y10T428/249924
Abstract: Disclosed is a method for preparing hollow carbon fibers having an empty space in the cross section thereof. More specifically, the disclosed method includes preparing a spinning solution of an acrylonitrile-based polymer having a viscosity ranging from 2000 to 5000 poise at room temperature; spinning the prepared spinning solution using a spinneret designed for spinning hollow fibers; super-drawing and drawing spun fibers to prepare hollow precursor fibers; and stabilizing and carbonizing the hollow precursor fibers to prepare the hollow carbon fibers. The hollow carbon fibers obtained by the disclosed method have a lower specific gravity by 10 to 50% than conventional hollow carbon fibers (solid), but have similar mechanical properties to the conventional fibers. Furthermore, in the method, the diameter of carbon fibers can be adjusted. Thus, it is possible to widen the application of hollow carbon fibers.
Abstract translation: 公开了一种在其截面中具有空白空间的中空碳纤维的制备方法。 更具体地说，所公开的方法包括制备在室温下具有2000-5000泊的粘度的丙烯腈基聚合物的纺丝溶液; 使用设计用于纺丝中空纤维的喷丝头纺出制备的纺丝溶液; 超拉伸和拉伸纺丝纤维以制备中空前体纤维; 并稳定和碳化中空前体纤维以制备中空碳纤维。 通过所公开的方法获得的中空碳纤维具有比常规中空碳纤维（固体）低10至50％的比重，但是与常规纤维具有相似的机械性能。 此外，在该方法中，可以调节碳纤维的直径。 因此，可以扩大中空碳纤维的应用。
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公开(公告)号：US08501146B2
公开(公告)日：2013-08-06
申请号：US13397008
申请日：2012-02-15
Applicant: Young-Ho Choi , Do Suck Han , Chi-Hoon Choi
Inventor： Young-Ho Choi , Do Suck Han , Chi-Hoon Choi
CPC classification number: D01D5/24 , D01F1/02 , D01F9/225 , Y10T428/2918 , Y10T428/2973 , Y10T428/2975
Abstract: Disclosed is a method for preparing hollow carbon fibers having an empty space in the cross section thereof. More specifically, the disclosed method includes melt-spinning an acrylonitrile-based polymer by using a supercritical fluid as a plasticizer; drawing spun fibers to prepare hollow precursor fibers; and stabilizing and carbonizing the hollow precursor fibers to prepare the hollow carbon fibers. The hollow carbon fibers obtained by the disclosed method have at least a 10 to 50% lower specific gravity than conventional hollow carbon fibers (solid), but have similar mechanical properties to the conventional fibers. Furthermore, the diameter of carbon fibers can be adjusted, thereby making it possible to widen the application of hollow carbon fibers.
Abstract translation: 公开了一种在其截面中具有空白空间的中空碳纤维的制备方法。 更具体地说，所公开的方法包括使用超临界流体作为增塑剂使丙烯腈系聚合物熔融纺丝; 拉伸纺丝纤维以制备中空前体纤维; 并稳定和碳化中空前体纤维以制备中空碳纤维。 通过所公开的方法获得的中空碳纤维比常规中空碳纤维（固体）具有至少10至50％的比重，但是与常规纤维具有相似的机械性能。 此外，可以调节碳纤维的直径，从而可以拓宽中空碳纤维的应用。
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