摘要
采用扫描电镜、差示扫描量热法、傅里叶红外光谱法、X射线衍射法和力学拉伸试验等方法,研究了再生和原生锦纶6FDY长丝的表面形貌、分子结构、热学和力学等性能,探究两者性能上的区别。结果表明:两种纤维在分子结构方面无明显不同;两种纤维的表面形貌相似,但再生锦纶表面含有微量颗粒凸起;与原生锦纶相比,再生锦纶结晶度略高,取向度相似,断裂强度和断裂伸长率略高,熔融温度低,熔融焓高。
The surface morphology,molecular structure,thermal properties and mechanical property of recycled and original polyamide 6 FDY samples are studied by scanning electron microscopy,differential scanning calorimetry,Fourier transform infrared spectroscopy,X-ray diffraction and dynamics tensile test,and the difference in structure and performance between the two is explored.The results show that there is no clear distinction in chemical molecular structure between the two fibers.The surface morphology of the two fibers is similar,but there are microparticle bumps on the surface of the recycled nylon.Compared with the original nylon,the recycled nylon has slightly higher crystallinity,similar orientation,slightly higher fracture strength and elongation at break,lower melting temperature,and higher melting enthalpy.
作者
刘聪
魏孟媛
薛文良
LIU Cong;WEI Menyuan;XUE Wenliang(Key Laboratory of Textile Science and Technology,Ministry of Education,Donghua University,Shanghai 201620,China;Shanghai Entry-Exit Inspection and Quarantine Bureau,People’s Republic of China,Shanghai 200120,China;Lixing Textile and Garment Industry Research Institute,Xiayi 476499,Henan,China)
出处
《上海纺织科技》
2024年第2期67-69,91,共4页
Shanghai Textile Science & Technology
基金
国家重点研发计划(2022YFF0607203)
关键词
锦纶
力学性能
热学性能
纤维结构
结晶度
取向度
polyamide
mechanical property
thermal property
fiber structure
crystallinity
degree of orientation
作者简介
刘聪(2000-),女,在读硕士研究生,主要研究方向为纺织品质量评价方法及其检测技术;通信作者:薛文良。E-mail:xwl@dhu.edu.cn。
