摘要
针对聚丁二酸丁二醇酯(PBS)树脂分子质量高、加工温度窗口小,不利于熔融纺丝的问题,通过PBS流变性能测试,指导熔融纺丝工艺,利用多功能柔性纺丝机实现了190℃条件下PBS熔融纺丝,采用熔融纺丝—牵伸一步法制备了PBS全拉伸丝(FDY)。通过扫描电镜、X射线衍射仪及力学性能测试等,研究了纺丝过程中纤维的表观形貌、结晶结构及力学性能的变化。结果表明,纺丝过程中的牵伸可提高PBS纤维的结晶取向及结晶度,从而提升纤维的力学性能,经6.5倍牵伸的PBS FDY的断裂强度达到了2.14 cN/dtex。在此基础上,通过堆肥试验,研究了PBS纤维的生物可降解性能。结果表明,PBS纤维在冬季堆肥条件下30 d的质量损失率为2.0%左右,断裂强度下降达50%以上,纤维表面刻蚀严重,结晶度下降明显,具有良好的生物可降解性能。
In response to the problem of high molecular weight and small processing temperature window of polybutylene succinate(PBS)resin,which was not conducive to melt spinning.Through PBS rheological per-formance testing,the melt spinning process was guided,and the multifunctional flexible spinning machine was used to achieve PBS melt spinning at 190℃.PBS fully drawn yarn(FDY)were prepared using a one-step method of melt spinning and stretching.The changes in the apparent morphology,crystalline structure,and mechanical properties of the fibers during the spinning process were studied through scanning electron microscopy,X-ray diffraction,and mechanical property testing.The results show that stretching during the spinning process can improve the crystal orientation and crystallinity of PBS fibers,thereby enhancing the mechanical properties of the fibers.The breaking strength of PBS FDY with 6.5 times stretching reaches 2.14 cN/dtex.On this basis,the biodegradability of PBS fibers was studied through composting experiments.The results show that the quality loss rate of PBS fiber under winter composting conditions for 30 days is about 2.0%,and the breaking strength decreases by more than 50%.The fiber surface is severely etched,and the crystallinity decreases significantly,demonstrating good biodegradability.
作者
刘禹豪
陈佳月
张北波
程明
王桦
杨旭超
LIU Yu-hao;CHEN Jia-yue;ZHANG Bei-bo;CHENG Ming;WANG Hua;YANG Xu-chao(Sichuan Silk Science Research Institute Co.,Ltd.,Sichuan Silk Engineering Technology Research Center,Chengdu 610031,Sichuan,China;School of Materials Science and Engineering,Wuhan Textile University,Key Laboratory of Textile New Materials and Their Applications in Hubei Province,Wuhan 430299,Hubei,China)
出处
《合成纤维》
2025年第9期4-9,共6页
Synthetic Fiber in China
基金
湖北省纺织新材料及其应用重点实验室(武汉纺织大学)开放课题(FZXCL202302)。
关键词
聚丁二酸丁二醇酯
熔融纺丝
纺丝牵伸一步法
堆肥降解
polybutylene succinate ester
melt spinning
one-step method of spinning and stretching
compost degradation
