| 摘要 |
PURPOSE: A manufacturing method of aramid fiber and the aramid fiber are provided to maintain initial strength without discoloration of the fiber, and offer good adhesion of filaments. CONSTITUTION: A manufacturing method of aramid fiber includes the following steps of: dissolving an aromatic poly amide polymer in sulfuric acid to manufacture spinning dope; spinning the spinning dope through a spinneret; solidifying a discharged material in a coagulation bath to form the filament; neutralizing the filament with an alkaline solution including NaOH of 0.3 ~ 1.3 weight%; and rinsing the neutralized filament with an alkaline solution including the NaOH of 0.01 ~ 0.15%. |
