| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flexible carbon fiber nonwoven fabric having excellent passableness of a process having bends such as a roller, storable in a rolled state and having a low electrical resistivity value, a high-density flame-resistant fiber nonwoven fabric which is a precursor thereof and a method for producing the same. <P>SOLUTION: The high-density flame-resistant fiber nonwoven fabric has ≥90 mass% of fiber content and 0.4-0.8 g/cm<SP>3</SP>bulk density. Furthermore, fibers are preferably polyacrylonitrile-based flame-resistant fibers. The carbon fiber nonwoven fabric has 0.2-0.5 g/cm<SP>3</SP>bulk density, 0.1-0.5 mm thickness and 5-15 mNcm bending resistance. The carbon fiber nonwoven fabric is obtained by treating the high-density flame-resistant fiber nonwoven fabric at ≥1,000°C in an inert gas atmosphere. <P>COPYRIGHT: (C)2003,JPO |
