HIGH-DENSITY FLAME-RESISTANT FIBER NONWOVEN FABRIC, CARBON FIBER NONWOVEN FABRIC AND METHOD FOR PRODUCING THE SAME

摘要

PPROBLEM 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. PSOLUTION: The high-density flame-resistant fiber nonwoven fabric has 90 mass% of fiber content and 0.4-0.8 g/cmSP3/SPbulk density. Furthermore, fibers are preferably polyacrylonitrile-based flame-resistant fibers. The carbon fiber nonwoven fabric has 0.2-0.5 g/cmSP3/SPbulk 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 1,000C in an inert gas atmosphere. PCOPYRIGHT: (C)2003,JPO