目前大多数静电纺纤维采用非织造布的无序纤网方式收集，原因是连续稳定的高取向纱线成型困难，造成纳米纤维在机织物针织物等方面应用严重受限。现有纳米纤维成纱加捻三角区过大，造成纱线频繁断头难以批量制备。本研究将采用多射流无阻塞伞状喷头替代传统针头，针对该喷头宽幅制备纳米纤维，拟采用磁场辅助螺旋凹槽式大尘笼作为批量取向纤维收集装置，尘笼内配备负压流场，使纤维定向分条聚集至微三角区，配合双尘笼摩擦纺加捻实现低牵伸、弱张力连续成纱。本项目将构建取向纳米纤维/电-磁耦合场两相流模型和大尘笼负压流场定向集聚纤维束/流体两相流模型并数值计算。对微三角区双尘笼摩擦纺负压流场连续成纱进行完整力学分析，建立二维准静力学模型确定微三角区加捻点位置，完善纱线三维非线性振动方程控制微三角区成纱稳定性。采用ANSYS对电磁场取向纤维、负压场定向集聚及加捻纱线进行模拟验证。形成有自主产权的连续纳米纤维纱线批量制备能力。

At present, most of the electrospinning fibers are collected by the non-woven fabrics in the form of disordered wire mesh, because the continuous and stable high orientation yarns forming difficulties, resulting in nanofibers in the fabric of woven fabrics,knitted fabrics and other aspects of application is severely limited.The existing nanofiber yarn twist triangle zone is too large, resulting in frequent yarn breakage and difficult to batch preparation. In this study,a multi-jets non-blocking umbrella nozzle is used to replace the traditional needles,the nanofibers are prepared for the width of the nozzle.The magnetic field-assisted large dust cage with a spiral groove is used as the batch-oriented fiber collection device,and the large dust cage is equipped with negative pressure flow field,so that the fiber orientation aggregated to the micro triangular zone, with the double dust cage friction spinning twist to achieve low draft, weak tension continuous yarns.This study will built the following two models,including the two - phase flow model formed by nanofibers oriented fibers / electromagnetic under electro - magnetic coupling field and the two - phase flow model and numerical calculation of the concentrated fiber bundle / fluid under the negative pressure flow field in the large dust cage.At the same time, a complete mechanical analysis of the nanofiber yarns in the micro triangule zone under the negative pressure flow field of double-cage friction spinning system will also be built.Moreover,a two-dimensional quasi-static model will be establish to determine the twisted point and the perfect three-dimensional nonlinear oscillation equation will also be establish to control the stability of yarn in micro triangle zone.ANSYS will be use to simulate the oriented fibers in the electromagnetic field and the twisted yarn in the negative pressure flow field to verify the theoretical accuracy.Design advanced elecrospun nanofibers machines to product continuous nanofiber yarns in batches with independent property.