METHOD FOR PREPARING AROMATIC POLYAMIDE FILAMENT, CAPABLE OF OFFERING HIGH INTENSITY PARA ARAMID FIBER HAVING UNIFORMITY IN MONOFILA CROSS SECTION

摘要

PURPOSE: A method for preparing aromatic polyamide filament is provided to improve intensity of filament and make uniform cross section surface of monofilament by coagulating spinning dope uniformly after adjusting a size of a coagulation tube. ;CONSTITUTION: A method for preparing aromatic polyamide filament includes the following steps: dissolving a compound having inherent viscosity of 5.5-7.0 in sulfuric acid of 99.0 - 101.1% concentration in a temperature of 70-90°C; making the spinning dope; spinning the spinning dope through a spinneret(1) while passing through an air gap; and washing and coagulating thee the spinning dope in a coagulation bath.;COPYRIGHT KIPO 2011