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Small angle X-ray scattering study of microvoid evolution and pertinence of microvoid and mechanical properties in gamma-irradiated CFs

机译：微胃癌微壤脉进化和微肺和机械性能的小角度X射线散射研究γ辐照CFS

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摘要

To explore the mechanism of microvoid evolution and the pertinence of microvoid and mechanical behavior of carbon fibers (CFs) in gamma-irradiation, T700 CFs were exposed to gamma-rays under epoxy chloropropane (ECP) and argon (Ar) at room temperature. The results from small angle X-ray scattering (SAXS) showed that the average microvoid radius of the CFs decreased gradually from 4.8406 nm for pristine fibers to 3.6868 nm (ECP) and 3.4223 nm (Ar), indicating that gamma-irradiation could obviously decrease the microvoid in CFs owing to annealing and rearrangement effects. More significantly, active media would enlarge the surface microvoid of fibers, thus the microvoid of CFs irradiated in ECP was overall larger than that in Ar. The tensile strength of CFs was increased from 5.74 GPa for the pristine fibers to 6.78 GPa (Ar) and 6.18 GPa (ECP) for the irradiated CFs along with a decrease in the microvoid. Therefore, this would provide a key to investigate the evolution of the CF microvoid during gamma-irradiation, which was conducive to improving the mechanical properties of gamma-irradiated CFs.
机译：为了探讨微织物演化的机制和γ-辐射中碳纤维（CFS）的微壤脉和机械行为的情况，将T700CFS暴露于环氧氯丙烷（ECP）下的γ射线，在室温下氩气（AR）。小角度X射线散射（SAX）的结果表明，CFS的平均微脂偶氮半径从4.8406nm逐渐降低至3.6868nm（ECP）和3.4223nm（Ar），表明γ-辐照可以明显减少由于退火和重排效应，CFS中的微孔。更明显地，活性培养基将扩大纤维的表面微伏，因此在ECP中照射的CFS的微胃部总体大于AR中的。 CFS的拉伸强度从5.74GPa增加到原始纤维至6.78GPa（AR）和6.18GPa（ECP），用于辐照的CFS以及微脂糖的降低。因此，这将提供一种键来研究γ-辐照过程中CF微孔的演变，这有利于改善γ辐照的CFS的机械性能。

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  • 来源
    《RSC Advances》 |2018年第5期|共4页
  • 作者

    Feng Tingting; Zhao Yufen; Shi Jie; Liu Liangsen; Li Nan; Xu Zhiwei; Zhao Lihuan; Tian Xu; Mai Wei; Li Yinglin;

  • 作者单位

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Text State Key Lab Separat Membranes &

    Membrane Proc Tianjin 300387 Peoples R China;

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  • 中图分类 化学;
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