不同纺丝法制备的聚丙烯腈纤维的结构与性能

发布时间：2018-03-29 02:31

  本文选题：聚丙烯腈　切入点：溶液纺丝　出处：《东华大学学报(自然科学版)》2017年03期

【摘要】：对购买的由不同厂家采用溶液纺丝制得的3种商用聚丙烯腈(PAN)原丝和采用增塑熔融纺丝法自制的PAN纤维的结构与性能进行对比研究.试验结果表明:增塑熔融纺丝法制备的PAN纤维发生了环化、脱氢反应,放热峰宽化,放热焓较低,玻璃化转变温度较高,纤维的拉伸断裂强度均高于3种商用PAN原丝,达到7.38cN/dtex;采用Ruland法和逐次切线法计算发现,增塑熔纺PAN纤维沿纤维轴方向微孔的半径和取向偏离度较小,微孔长度较大.
[Abstract]:The structure and properties of three commercial polyacrylonitrile (pan) polyacrylonitrile (pan) fibers obtained by solution spinning from different manufacturers and PAN fibers prepared by plasticizing melt spinning were compared. The results showed that the plasticized melt spinning was carried out. The PAN fibers prepared by filament method were cyclized. In the dehydrogenation reaction, the exothermic peak is widened, the enthalpy is low, the glass transition temperature is high, the tensile fracture strength of the fiber is higher than that of three commercial PAN precursors, and the tensile strength is 7.38cN / dtex.The results of calculation by Ruland method and successive tangent method show that, The radius and orientation of micropores in plasticized melt spinning PAN fibers are smaller and the length of micropores is larger along the axis of fibers.
【作者单位】： 河南工程学院材料与化学工程学院;东华大学材料科学与工程学院;
【基金】：河南工程学院功能纺织高分子材料科技创新团队资助项目(CXTD2013004);河南工程学院博士基金资助项目(D2014017) 河南省教育厅科学技术研究重点资助项目(14B430032)
【分类号】：TQ342.31
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本文编号：1679183