公开(公告)号：US20130136914A1

公开(公告)日：2013-05-30

申请号：US13396324

申请日：2012-02-14

申请人： Young-Ho CHOI ,  Do Suck HAN ,  Chi-Hoon CHOI

发明人： Young-Ho CHOI ,  Do Suck HAN ,  Chi-Hoon CHOI

IPC分类号： B32B5/16 ,  D01F9/20

CPC分类号： D01D5/24 ,  D01F9/225 ,  D02J1/228 ,  Y10T428/249924

摘要： 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.

摘要翻译： 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。