Since they arises in many stages of manufacturing as well as at the end of their lifetime, glass fiber reinforced polymers‐based wastes are one of the biggest problem for the composite industry. There are many waste disposal methods available, but these are low value‐added and usually imply additional cost to the manufacturers. In this study, composite wastes have been ground into three different grain sizes and used as filler in the production of new glass fiber reinforced composites. Composites were examined regarding their rheological, thermal, mechanical, dynamic‐mechanical, and morphological properties. High thixotropy a resin could be obtained by waste incorporation ensuring easier gel‐coat application in hand lay‐up molding technique. A remarkable reduction in linear shrinkage of the resulting composite was also considered as a benefit. Although there was tolerable loss in their mechanical properties, higher grain size of waste particles shifted glass transition temperature up to 50°C higher due to restricted chain mobility. Fibers from both the waste matrix and fresh glass fiber content exhibited quite similar interphase with the unsaturated polyester. In summary, using composite waste in their own composition has been found to be a good solution to recover the wastes in both economic and environmental concern.

中文翻译：

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玻璃纤维增​​强聚合物废料的利用

由于它们出现在制造的各个阶段以及使用寿命的尽头，因此，玻璃纤维增​​强的聚合物基废料是复合材料行业最大的问题之一。有许多废物处理方法可用，但这些方法附加值低，通常对制造商而言意味着额外的成本。在这项研究中，将复合废物粉碎成三种不同的粒度，并在生产新型玻璃纤维增​​强复合材料时用作填料。研究了复合材料的流变，热，机械，动态力学和形态学特性。通过混入废料可以得到高触变性的树脂，从而确保在手糊成型技术中更容易进行凝胶涂层的应用。所得复合材料的线性收缩率的显着降低也被认为是有益的。尽管它们的机械性能有可忍受的损失，但由于链迁移率受到限制，废料颗粒的粒径较大，使玻璃化转变温度升高了50℃。来自废基质和新鲜玻璃纤维含量的纤维表现出与不饱和聚酯非常相似的中间相。总而言之，在经济和环境方面，已经发现以它们自己的成分使用复合废物是回收废物的良好解决方案。