公开(公告)号：US20110159767A1

公开(公告)日：2011-06-30

申请号：US12958952

申请日：2010-12-02

申请人： Hiroshi SAKURAI ,  Hiroshi HARA ,  Hiroki SANO ,  Shuhei ONOUE ,  Yukio NAKAMOTO ,  Yoshio OSAWA ,  Shoichi TAKAGI

发明人： Hiroshi SAKURAI ,  Hiroshi HARA ,  Hiroki SANO ,  Shuhei ONOUE ,  Yukio NAKAMOTO ,  Yoshio OSAWA ,  Shoichi TAKAGI

IPC分类号： D04H1/08 ,  D04H13/00 ,  D01F9/14

CPC分类号： D01D5/0985 ,  C08J5/042 ,  D01F9/145 ,  D04H1/08 ,  D04H1/4242 ,  D04H1/46 ,  Y10T442/50 ,  Y10T442/60 ,  Y10T442/624

摘要： A nonwoven fabric which contains pitch-based carbon fibers having a high elongation and a high elastic modulus which are not attained in the prior art and is obtained by improving the tensile elongation of carbon fibers derived from mesophase pitch, a felt obtained from the nonwoven fabric, and production processes therefore. The nonwoven fabric contains pitch-based carbon fibers, wherein the pitch-based carbon fibers have (i) an average fiber diameter (D1) measured by an optical microscope of more than 2 μm and 20 μm or less, (ii) a percentage of the degree of fiber diameter distribution (S1) to average fiber diameter (D1) measured by an optical microscope of 3 to 20%, (iii) a tensile elastic modulus of 80 to 300 GPa and (iv) a tensile elongation of 1.4 to 2.5%.

摘要翻译： 一种无纺织物，其包含在现有技术中未实现的具有高伸长率和高弹性模量的沥青基碳纤维，并且通过改善由中间相沥青衍生的碳纤维的拉伸伸长率获得，由无纺布获得的毡 ，以及生产过程。 无纺织物含有沥青类碳纤维，其中沥青类碳纤维具有（i）通过光学显微镜测得的平均纤维直径（D1）大于2μm和20μm以下，（ii）百分比 通过光学显微镜测定的纤维直径分布（S1）与平均纤维直径（D1）的比例为3〜20％，（iii）80〜300GPa的拉伸弹性模量和（iv）拉伸伸长率为1.4〜2.5 ％。