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Mechanical properties of poly(ethylene terephthalate) nanofiber three-dimensional structure prepared by CO2 laser supersonic drawing

机译:CO2激光超声波制备聚(乙二醇酯)纳米纤维三维结构的机械性能

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摘要

CO2-laser supersonic drawing method can produce bulky fluffy poly(ethylene terephthalate) (PET) nanofibers (NFs) by only irradiating CO2-laser to as-spun PET fibers in the supersonic air jet. Cylindrical PET NF three-dimensional structure (NF-3DS) was fabricated by compression-molding the obtained fluffy PET NFs using the cylindrical metal mold. NF-3DS mold was completely disordered 3DS without a laminated structure because NFs were disorderly packed in the metal mold. The porosity of NF-3DS can be changed by varying the filling weight of NF into the metal mold, and the highest porosity was 95.4%. The shape recovery ratio after 50% uniaxial compression in the height of NF-3DS increases as the porosity increases, and NF-3DS with a porosity of 95.4% had a shape recovery ratio of 98.1%. NF-3DS with a desired shape will be produced if the metal mold can be prepared. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45763.
机译:CO2激光超声波拉伸方法可以通过仅将CO2激光照射超声波空气射流中的CO2-激光至SPUN PET纤维产生庞大的蓬松聚(乙二醇)纳米纤维(PET)纳米纤维(PET)。 通过使用圆柱形金属模具压缩成型的蓬松PET NFS来制造圆柱形PET NF三维结构(NF-3DS)。 NF-3DS模具在没有层压结构的情况下是完全混乱的3DS,因为NFS在金属模具中堆积不良。 通过将NF的填充重量变化到金属模具中,可以改变NF-3DS的孔隙率,并且最高的孔隙率为95.4%。 在NF-3DS高度的高度下,在NF-3DS的高度中的50%单轴压缩后的形状回收率随着孔隙率的增加而增加,并且具有95.4%的孔隙率的NF-3D具有98.1%的形状回收率。 如果可以制备金属模具,将产生具有所需形状的NF-3D。 (c)2017 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2018,135,45763。

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