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Investigation of the strength loss of glass fibre after thermal conditioning

机译：热调节后玻璃纤维强度损失的研究

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摘要

Single fibre tensile testing of thermally conditioned water sized and γ-aminopropyltriethoxysilane (APS) sized boron-free E-glass has been carried out. The fibres were produced from identical melts following which bare fibre had only water applied to it before winding whereas the sized fibre had a solution containing only APS applied to its surface. Both fibre types experience a loss of room temperature tensile strength after exposure to elevated temperature. By application of a novel method of single fibre thermal conditioning, it was demonstrated that the tensile strength of heat-treated glass fibre can be significantly underestimated. Strength loss was found, in most cases, to be caused by a combination of thermal effect and mechanical handling damage. The latter is found to be influenced by thermal loading of the fibre. The onset of mechanical handling damage in APS-sized fibre was found to be controlled by the thermal degradation of the silane sizing. This suggests that silane-based coatings, even when they are present as only a relatively thin surface layer, can protect fibres from the development or growth of critical surface flaws. The relative contribution to overall fibre strength loss from mechanical handling damage highlights the need to minimise processes which may cause fibre mechanical damage during glass fibre recycling procedures.
机译：已经对热调节水上浆和γ-氨基丙基三乙氧基硅烷（APS）上浆的无硼E玻璃进行了单纤维拉伸试验。纤维是由相同的熔体生产的，随后在裸纤维缠绕之前仅将裸露的水施加到其上，而上浆纤维的溶液仅将APS施加到其表面上。两种纤维在暴露于高温后都会经历室温拉伸强度的损失。通过应用新颖的单纤维热调节方法，已证明可以显着低估经热处理的玻璃纤维的拉伸强度。在大多数情况下，发现强度损失是由热效应和机械处理损坏共同造成的。发现后者受纤维的热负荷影响。发现APS尺寸纤维中机械处理损伤的发生是由硅烷上浆的热降解控制的。这表明基于硅烷的涂料即使仅作为相对较薄的表面层存在，也可以保护纤维免受严重表面缺陷的发展或增长。机械处理损伤对整体纤维强度损失的相对贡献突出表明，需要最小化可能在玻璃纤维回收过程中造成纤维机械损伤的过程。

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  • 来源
    《Journal of Materials Science》 |2015年第3期|1050-1057|共8页
  • 作者

    P. G. Jenkins; L. Yang; J. J. Liggat; J. L. Thomason;

  • 作者单位

    Department of Mechanical Aerospace Engineering University of Strathclyde">(1);

    Department of Mechanical Aerospace Engineering University of Strathclyde">(1);

    Department of Pure and Applied Chemistry University of Strathclyde">(2);

    Department of Mechanical Aerospace Engineering University of Strathclyde">(1);

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