PRODUCTION OF CARBON FIBER HAVING HIGH STRAND TENACITY

摘要

PROBLEM TO BE SOLVED: To obtains carbon fibers exhibiting high strand tenacity. SOLUTION: This method for producing carbon fibers comprises using pitch as a raw material and passing through every processes of at least melt spinning, infusibilizing and carbonizing. In the method, the infusibilized fibers are carbonized and then subjected to heat-treatment in an atmosphere containing carbon dioxide at 1,000-1,800 deg.C.