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Ageing of pultruded glass fibre reinforced polymer composites exposed to combined environmental agents

机译：拉挤玻璃纤维增​​强的聚合物复合材料的老化暴露于组合的环境剂

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摘要

This paper presents an experimental research on the durability of pultruded Glass Fibre Reinforced Polymer (GFRP) composites applied in building construction. Three different matrices have been used with E-glass fibres: isophthalic polyester, orthophthalic polyester and vinylester. The degradation of the mechanical and aesthetical performance of the composites has been monitored through a process of accelerated artificial ageing in a climatic chamber, simulating the combined effect of high temperature, freeze-thaw cycles, moisture and ultraviolet (UV) radiation. Tensile, bending and interlinear shear strength tests have been performed to measure the variation of some mechanical properties during six months of artificial exposition. A consistent reduction of the mechanical performance has been observed. Aesthetical appearance has been affected as well both in terms of loss of lightness and colour variation. The data collected have been compared to those after one year of natural ageing in external atmosphere. It has been observed that the considered artificial ageing produces a higher degradation of some mechanical properties if compared to the natural ageing in north Italy climate, accelerating the effects of the environment.
机译：本文介绍了拉挤玻璃纤维增​​强聚合物（GFRP）复合材料在建筑施工中的耐久性的实验研究。电子玻璃纤维已使用三种不同的基质：间苯二甲酸聚酯，邻苯二甲酸聚酯和乙烯基酯。通过在气候室内加速人工老化过程，模拟高温，冻融循环，湿气和紫外线（UV）辐射的综合作用，可以监测复合材料的机械和美学性能的下降。已经进行了拉伸，弯曲和线间剪切强度测试，以测量人工暴露六个月期间某些机械性能的变化。观察到机械性能的持续降低。美学外观也受到亮度损失和颜色变化的影响。将收集到的数据与在外部大气中自然老化一年后的数据进行比较。已经观察到，与意大利北部气候中的自然老化相比，考虑到的人工老化会导致某些机械性能的更高退化，从而加速了环境的影响。

著录项

  • 来源
    《Composite Structures》 |2014年第2期|1019-1026|共8页
  • 作者

    Guglielmo Carra; Valter Carvelli;

  • 作者单位

    Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy;

    Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ageing; Durability; Glass fibres; Pultruded profiles;

    机译：老化;耐用性玻璃纤维;拉挤型材;

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