Method of obtaining yarns or fiber sheets of carbon from a cellulose precursor

摘要

The method of obtaining yarns or unidirectional fiber sheets of carbon from a cellulose precursor comprises the steps which consist in: · spinning cellulose filaments (12) from a viscose solution or a cellulose solution; · subjecting the cellulose filaments to washing in water (21); · impregnating the washed and non-dried cellulose filaments with an aqueous emulsion (41) of at least one organosilicon additive; · drying the impregnated cellulose filaments; and · obtaining at least one yarn (72) or a unidirectional fiber sheet made up of impregnated and dried cellulose filaments prior to carbonization.