Patent ID: 6013207
Filing Date: 2000-01-11
Classification: C04B,D01F,Y10T

Abstract:
A method for making a shaped carbonaceous material comprising the steps of:a) forming a plurality of binder-free, single fibers into a shaped self-supporting mass of single fibers, wherein:said single fibers primarily consist of cellulose fibers, each configuration of which is non-linear so as to be entangled with one another,said shaped self-supporting mass of single fibers is prepared as loose fibers, laps, slivers, or rovings, andsaid shaped self-supporting mass of single fibers is not needle-punched; andb) sufficiently heating said shaped self-supporting mass of single fibers, which is binder-free and not needle-punched, to cause at least one of carbonization or graphitization of said single fibers, whereby:said single fibers are thoroughly entangled with one another and said shaped self-supporting mass is made excellently stable; andsaid shaped carbonaceous material has a bulk density of 0.025 g/cm.sup.3 or less and is soft, light and porous.