朱新生,程嘉祺,徐彤,顾亚兵
ZHU Xin-sheng1; CHENG Jia-qi1; XU Tong1; GU Ya-bing2 (1.Faculty of Materials Engineering;

• 1:苏州大学材料工程学院
• 2:苏州大学材料工程学院
• 3:苏州大学材料工程学院
• 4:江苏南黄海实业股份有限公司 苏州215021

摘要(Abstract)：

应用X-射线衍射等方法研究了部分国产熔纺氨纶及其改性产品、进口熔纺氨纶和进口干纺氨纶产品的结晶性和耐热性,从结晶度、晶粒尺寸和拉伸性能等方面探讨了熔纺和干纺氨纶的结晶性、回弹性和耐热性的关系。试验得出:干纺氨纶结晶度与晶粒尺寸大,回弹性和耐热性明显优于熔纺氨纶。部分国产熔纺氨纶的回弹性和耐热性已经接近或超过进口熔纺产品,尤其改性熔纺产品的干热恢复率指标已经接近干纺氨纶。
The therm alstability of melt-spun polyurethane was generally thought to be poorerthan that of dry-spun polyurethane. The relationship between the thermal stability and the ability of crystallization and elasticity of domestic melt-spun polyurethane and imported melt-spun and dry-spun polyurethane fibers were investigated with X-ray diffraction and the repeating tensile experiment. The results showed that the degree of crystallization and the size of crystallites of dry-spun polyurethane fibers were much larger than those of melt-spun polyurethane fibers, and thus the heat stability and elasticity of dry-spun polyurethane fibers were better than those of melt-spun polyurethanes. It was also found that the thermal stability and e-lasticity of domestic melt-spun polyurethane fibers were as good as those of import corresponding products. The degree of dry-heat recovery of domestic modified melt-spun polyurethane product had come close to those of import dry-spun polyurethanes.

关键词(KeyWords)： 熔纺氨纶;干纺氨纶;微观结构;热稳定性;回弹性
melt-spun polyurethane fibers,dry-spun polyurethane fibers,microstructures,heatstability,e-lasticity

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 朱新生,程嘉祺,徐彤,顾亚兵
ZHU Xin-sheng1; CHENG Jia-qi1; XU Tong1; GU Ya-bing2 (1.Faculty of Materials Engineering;

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