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首页> 外文期刊>Journal of Applied Polymer Science >Poly(ethylene-2,6-naphthalate) Nanofiber Prepared by Carbon Dioxide Laser Supersonic Drawing
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Poly(ethylene-2,6-naphthalate) Nanofiber Prepared by Carbon Dioxide Laser Supersonic Drawing

机译：二氧化碳激光超声拉伸制备聚（2,6-萘二甲酸乙二醇酯）纳米纤维

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摘要

Poly(ethylene-2,6-naphthalate) (PEN) nanofiber was prepared by a carbon dioxide (CO2) laser supersonic drawing. The CO, laser supersonic drawing was carried out by irradiating the laser to the as-spun) PEN fiber in a low-temperature supersonic jet. The supersonic jet was generated by blowing off air into a vacuum chamber from a fiber supplying orifice. The flow velocity from the orifice can be estimated by applying Graham's theorem from the pressure difference between the atmospheric pressure and the pressure of the vacuum chamber. The fastest flow velocity estimated was 396 m s(-1) (Mach 1.15) at a chamber pressure of 6 KPa. The nanofiber obtained at Mach 1.15 was the oriented nanofibers with an average diameter of 0.259 mu m, and its draw ratio estimated from the diameters before and after the drawing reached 430,822 times. The CO2 laser supersonic drawing is a new method to make nanofiber without using any solvent or removing the second component.
机译：聚（2,6-萘二甲酸乙二醇酯）（PEN）纳米纤维是通过二氧化碳（CO2）激光超音波拉伸制备的。通过在低温超声射流中将激光照射到刚纺好的PEN光纤上，进行CO激光超声拉伸。通过从纤维供应孔将空气吹入真空室中来产生超音速射流。可以通过根据大气压力与真空室压力之间的压差应用格雷厄姆定理来估算孔口的流速。在6 KPa的腔室压力下，估计的最快流速为396 m s（-1）（Mach 1.15）。在1.15马赫下获得的纳米纤维是平均直径为0.259μm的取向纳米纤维，并且根据拉伸前后的直径估算的拉伸比达到430822倍。 CO2激光超声绘制是一种无需使用任何溶剂或去除第二种成分即可制备纳米纤维的新方法。

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