溶液喷射法制备间位芳纶纳米纤维的研究
发布时间：2018-11-01 11:02
【摘要】：采用溶液喷射纺丝技术制备了间位芳纶(PMIA)纳米纤维,探讨了溶液浓度、气压、挤出速率和接收距离等参数对纤维形貌和直径的影响,结果表明,在溶液浓度为12%(质量分数)、牵伸风压为0.12 MPa、挤出速率为0.8mL/h、接收距离为40cm条件下,所得PMIA纳米纤维形貌较好,纤维平均直径可达276.7nm;采用高速旋转滚筒,制备了PMIA取向纳米纤维,讨论了滚筒转速对PMIA纤维膜性能的影响。结果表明,随着滚筒转速提高,纤维膜取向度及其力学性能均提高,1 300r/min时达到最大值,而膜的孔隙率则随着转速的提高逐渐减小,但仍可达79.7%以上。
[Abstract]:The m-aramid (PMIA) nanofibers were prepared by solution jet spinning. The effects of solution concentration, air pressure, extrusion rate and receiving distance on the morphology and diameter of the fibers were investigated. When the solution concentration was 12% (mass fraction), the draft wind pressure was 0.12 MPa, the extrusion rate was 0.8 mL / h, and the receiving distance was 40cm, the morphology of the PMIA nanofibers was better, and the average diameter of the fibers was 276.7 nm. PMIA oriented nanofibers were prepared by high speed rotating drum. The effect of cylinder speed on the properties of PMIA fiber film was discussed. The results show that the orientation degree and mechanical properties of the fiber membrane increase with the increase of the rotating speed of the drum, and reach the maximum value at 1 300r/min, while the porosity of the membrane decreases gradually with the increase of the rotational speed, but it can still reach more than 79.7%.
【作者单位】： 东华大学材料科学与工程学院纤维材料改性国家重点实验室;
【基金】：上海市自然科学基金资助项目(15ZR1401100)
【分类号】：TQ342.72
本文编号：2303723
[Abstract]:The m-aramid (PMIA) nanofibers were prepared by solution jet spinning. The effects of solution concentration, air pressure, extrusion rate and receiving distance on the morphology and diameter of the fibers were investigated. When the solution concentration was 12% (mass fraction), the draft wind pressure was 0.12 MPa, the extrusion rate was 0.8 mL / h, and the receiving distance was 40cm, the morphology of the PMIA nanofibers was better, and the average diameter of the fibers was 276.7 nm. PMIA oriented nanofibers were prepared by high speed rotating drum. The effect of cylinder speed on the properties of PMIA fiber film was discussed. The results show that the orientation degree and mechanical properties of the fiber membrane increase with the increase of the rotating speed of the drum, and reach the maximum value at 1 300r/min, while the porosity of the membrane decreases gradually with the increase of the rotational speed, but it can still reach more than 79.7%.
【作者单位】： 东华大学材料科学与工程学院纤维材料改性国家重点实验室;
【基金】：上海市自然科学基金资助项目(15ZR1401100)
【分类号】：TQ342.72
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1 李超;溶液喷射纺丝制备PMIA纳米纤维膜的研究[D];东华大学;2016年
，本文编号：2303723
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