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环保无溶剂的熔体静电纺丝法可制备热塑性生物可降解材料的超细纤维,前期研究已在高效过滤、生物医药领域获得应用,利用该方法实现超细捻线的制备更有望将其应用拓展到高性能可穿戴的织物中。采用热塑性生物降解材料聚乳酸(PLA)为原料,通过自制多射流无针熔体电纺装置制备了纳米捻线,基于加捻原理探究了不同工艺参数对捻线中纤维的取向度和捻线捻度的影响。实验结果表明:在达到击穿电压前,电压越大,泰勒锥个数越多;当收集辊子旋转线速度与气流速度相接近时,纤维的取向性最好;旋风发生器气流速度越大,纤维越聚集成束,纤维捻角越大,最大捻角为36°。
Environmentally friendly solvent-free melt electrospinning can be used to prepare ultrafine fibers of thermoplastic biodegradable materials. Previous studies have been applied in the field of high-efficiency filtration and biomedicine. The preparation of ultra-fine twists by this method is more promising Expand to high performance wearable fabric. Nanostructured nanostructures were prepared by using self-made multi-jet needle-less melt electrospinning device. PLA was used as the raw material, and the orientation and twisting of the fibers in the twisting were investigated based on the principle of twisting. The effect of twist. The experimental results show that before the breakdown voltage is reached, the larger the voltage is, the more the number of Taylor cones is. When the rotational speed of the collecting roller is close to the air velocity, the orientation of the fiber is the best. The larger the air velocity of the cyclone, The more fibers gather into bundles, the larger the fiber twist angle is and the maximum twist angle is 36 °.