| 摘要 |
PURPOSE:To obtain fibers simultaneously satisfying high color-developing property, high strength and high modulus with keeping deep color having specific relative viscosity, tensile strength and initial modulus comprising capramide unit as almost part of repeating unit. CONSTITUTION:The aimed fibers are composed of capramide units of at least 75mol% of repeating units and have the properties such as <=3.0 relative viscosity, >=5.5g/d tensile strength and >=40g/d initial modulus. Spun polyamide-based fiber is dyed and movement of polymer molecule in the fiber is activated by preferably lowtemperature plasma, then a fiber without relaxation after drawing is obtained to afford the aimed fiber. |
