【摘要】 采用了自行设计并合成的具有特定热性能参数的高收缩聚酯(HSPET)及共聚醚酯(COPEET)与市售PET、PTT及PA6等相互组合纺制了并列型复合纤维,研究了成形工艺对纤维结构与性能的影响。在此基础上探讨了并列复合纤维弹性的形成机理:双组分的良好相容性是形成三维立体卷曲结构的必要条件;并列复合纤维双组分之间较大的热收缩率差异源于二者不同的取向与结晶结构,拉伸-定形工艺是形成上述结构差异的重要手段;并列复合纤维"哑铃型"断面结构的控制是获得最佳弹性的重要环节;适宜的热处理条件可赋予纤维最佳弹性效果。更多还原

【Abstract】 In this paper, HSPET(high shrinkage polyethylene terephthalate), COPEET(copolyether-ester) and commercially available PTT(polytrimethylene terephthalate) or PET(polyethylene terephthalate) and PA6(polyamide 6) were used for manufacturing side-by-side bicomponent fibers, and the effects of forming process on the structure and properties of the fibers were studied. It then discussed the mechanisms for the formation of the elasticity of the fibers: the good compatibility of the two components is the necessary condition for forming three dimensional crimps; the big thermal shrinkage difference between the two components is originated from the different orientations and crystal structures of the two; draw-setting process is an important means for forming the above-mentioned structural differences; controlling "dumbbell" cross section structure of the bicomponent fiber is an important way for obtaining best elasticity; while suitable heat treatment conditions can give the optimum fiber elasticity.更多还原