超声波振动磁场耦合辅助微流控纺丝工艺研究  

Study on microfluidic spinning process assisted by ultrasonic vibration and magnetic field coupling

作　　者：杨翰林 汪佩 韦炜 吴晓 钱慧 YANG Hanlin;WANG Pei;WEI Wei;WU Xiao;QIAN Hui(School of Mechanical Engineering and Automation,Wuhan Textile University,Wuhan,Hubei 430200,China;School of Textile Science and Engineering,Wuhan Textile University,Wuhan,Hubei 430200,China)

机构地区：[1]武汉纺织大学机械工程与自动化学院,湖北武汉430200 [2]武汉纺织大学纺织科学与工程学院,湖北武汉430200

出　　处：《毛纺科技》2023年第7期25-31,共7页Wool Textile Journal

基　　金：国家自然科学基金项目(51703170)。

摘　　要：为了避免微流控纺丝技术中,纺丝液黏度过高降低纳米纤维的表观质量以及堵塞微流控纺丝通道引发安全事故的问题,提出振动场与磁场耦合辅助作用下的微流控纺丝工艺,并开展了相关实验研究。设计普通微流控纺丝、磁场辅助、超声波振动辅助以及超声波振动与磁场耦合辅助4种微流控纺丝实验方案,对质量分数20%的聚丙烯腈/二甲基甲酰胺(PAN/DMF)纺丝液进行微流控纺丝实验。利用扫描电镜和Instron万能试验机,分析所制备纤维的微观结构、形貌特征与力学性能。结果表明:普通微流控纺丝、磁场辅助、超声波振动辅助以及超声波振动与磁场耦合辅助4种微流控纺丝工艺下的纤维直径范围分别为1.18~2.11μm、1.03~1.92μm、0.62~1.40μm、0.59~1.24μm;方差分别为0.159、0.096、0.053、0.048;相对于普通微流控纺丝,磁场辅助、超声波振动辅助、超声波振动与磁场耦合辅助制备纤维的平均直径分别减小了1.3%、28.7%、47.0%;多场耦合辅助制备纤维的细化程度、均匀性、表观质量以及纤维强力都得到了比较明显的改善,在纺织、服装等传统领域和组织工程、航空航天等高科技领域具有广阔应用前景。order to avoid safety accidents caused by excessive viscosity of the spinning solution and blockage of the microfluidic spinning channel in microfluidic spinning technology,a microfluidic spinning process assisted by the coupling of vibration field and magnetic field was proposed,and relevant experimental research was conducted.Four microfluidic spinning experimental schemes:ordinary microfluidic spinning,magnetic field assisted,ultrasonic vibration assisted,and ultrasonic vibration magnetic field coupled assisted were designed.Microfluidic spinning experiments on polyacrylonitrile/dimethylformamide(PAN/DMF)spinning solution with a mass fraction of 20%were conducted.The microstructure,morphology characteristics,and mechanical properties of the prepared fibers using scanning electron microscopy and Instron universal testing machine were analyzed.The results show that the fiber diameter ranges of conventional microfluidic spinning,magnetic field assisted,ultrasonic vibration assisted,and ultrasonic vibration magnetic field coupled assisted microfluidic spinning processes are 1.18-2.11μm,1.03-1.92μm,0.62-1.40μm,and 0.59-1.24μm,respectively;The variances are 0.159,0.096,0.053,0.048,respectively;Compared to conventional microfluidic spinning,the average diameter of fibers prepared by magnetic field assisted,ultrasonic vibration assisted,and ultrasonic vibration and magnetic field coupling assisted methods decreases by 1.3%,28.7%and 47%,respectively;The refinement,uniformity,apparent quality,and fiber strength of multi field coupling assisted fiber preparation have been significantly improved.It has broad application prospects in traditional fields such as textiles and clothing,as well as high-tech fields such as tissue engineering and aerospace.

关 键 词：纳米纤维 微流控纺丝 多场耦合 超声波振动 磁场辅助 

分 类 号：TS155[轻工技术与工程—纺织材料与纺织品设计]