热处理对摩擦纺包芯纱性能的影响

Influence of thermal treatment on properties of friction-spun core yarns

主要讨论了Dref 3型摩擦纺包芯纱包覆层组分的比例(包覆率)以及在干、湿自然状态下热处理对纱线热收缩性、包覆层抗滑脱性及拉伸性能的影响。芯纱采用聚酯长丝,包覆层为棉纤维。实验表明热处理能够明显提高纱线的热收缩性与包覆层抗滑脱性能,而且在湿状态下包芯纱的抗滑脱性能较干状态更好。纱线断裂伸长随着处理温度的增加而增加。包覆率提高,纱线热收缩性降低,抗滑脱性提高,断裂强力增加。

The influence of proportion of sheath content and thermal treatment under the relaxed condition on thermal shrinkage, sheath-slipping resistance and tensile properties of Dref-3 friction-spun core yams made of polyester muhifilament core and cotton sheath has been studied both in dry and wet state. It is observed that the thermal treatment markedly increases the thermal shrinkage and sheath-slipping resistance. The sheath-slipping resistance of wet treated yarns is found to be higher than that of dry treated yarns. Breaking elongation increases with the increase in treatment temperature. The increase in proportion of sheath fibre content decreases the thermal shrinkage and increases the sheath-slipping resistance and breaking strength.