摘要
对沸水处理前后的一步法涤纶FDY+POY双收缩丝纵向结构进行观察分析,并测试涤纶BSY的拉伸性能和沸水收缩率。研究结果表明:高收缩FDY纤维组成纱线的骨架,而低收缩的POY纤维拱起于丝束的表面形成丝圈;双收缩丝的拉伸断裂过程具有双峰特性。双收缩丝中2个组分的断裂过程是不同步的,FDY组分先断裂,POY组分后断裂;沸水处理前后双收缩丝拉伸过程是不同的;双收缩丝的强度主要由FDY组分决定,初始模量主要由POY组分体现。
The length-wise structure,boiling water shrinkage and tensile properties of bi-shrinkage yarns （BSY） are examined before and after boiling water treatment.The bi-shrinkage yarns （BSY） is composed of preorientted yarn （POY） /fully drawn yarn （FDY） which is produced by one-step spinning process.The results show that the high-shrinkage yarn FDY constructs the skeleton of BSY,and the lowshrinkage POY forms filament loops on the surface of BSY.There are two peaks in tensile curves of BSY,which means that the two components do not break at the same time,FDY breaks firstly,and then POY.BSY breaking processes are different before and after being treated in boiling water.The breaking tenacity of BSY is mainly determined by FDY,and the initial modulus of BSY is mainly determined by POY.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2010年第5期15-18,共4页
Journal of Textile Research
基金
浙江省科技项目(2005C31035)
关键词
双收缩丝
沸水收缩率
结构
拉伸性能
一步法纺丝工艺
BSY
boiling water shrinkage
structure
tensile property
one-step spinning process
