polyacrylonitrile copolymers, polyacrylonitrile precursor fiber for carbon fiber, carbon fiber bundle, flame-resistant fiber bundle method of manufacture, and the method of producing a carbon fiber bundle

摘要

Is a single fiber fineness with a high thermal stability of the spinning solution excellent productivity providing a large carbon fiber for polyacrylonitrile precursor fiber and copolymers which are suitable for production of the precursor fiber. High quality carbon fiber bundle having a productivity of the single fiber fineness and excellent large, provides a method for producing a stabilized fiber bundle suitable for the manufacture of a preparation and the carbon fiber bundle. Acrylonitrile unit 93.0 mol% 99.4 mol% and (meth) acrylamide units 0.5 mol% to 4.0 mol% and an unsaturated carboxylic acid hydroxyalkyl units 0.1 mol% 3.0 It consists of a mol%, the (meth) polyacrylonitrile copolymer which is one or both of the acrylamide units (meth) acrylamide units and a molecular weight of 105 or less (meth) acrylamide derivative unit. Co precursor fiber made of a polymer, a method for producing flame-resistant fiber bundle using the precursor fiber bundle composed of the precursor fibers, the carbon fiber bundle and a manufacturing method thereof.