氨纶/黏胶喷气纺包芯纱的弹性回复性能

Elastic recovery properties of elastane/viscose MJS core yarns

相比100%黏胶短纤纱,喷气纺包芯纱的急弹回复性更好。位于包芯纱中心的长丝比边缘的长丝有更高的弹性回复性。急弹回复性会随着须条宽度增加而下降。随着纺纱速度的增加,急弹回复性先增加后下降。缓弹回复性和塑性变形均与急弹回复性的变化趋势相反。

Immediate elastic recovery is higher for MJS core yarns than for 100% viscose staple yarns. However,the core yarns spun with filament positioned at center show much higher immediate elastic recovery as compared to the core yarns spun with filament positioned at the edge. Immediate elastic recovery decreases with increase in ribbon width,whereas with increase in spinning speed immediate elastic recovery first increases and then decreases. Both delayed recovery and permanent set maintain an opposite relationship as immediate elastic recovery.