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首页> 外文期刊>Journal of Applied Polymer Science >Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites
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Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites

机译：丝瓜纤维的碱处理方面对聚酯基复合材料挠曲性能的影响

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摘要

Sponge gourd (Luffa cylindrica) forms a natural mat that deviates the crack path in brittle thermoset resin matrix composites, leading to a controlled fracture mode and increasing the toughness of the composite. The use of luffa as reinforcement is, however, restricted by a very weak fiber-matrix interface. In this work, luffa fibers were alkali-treated at two temperatures, with varying alkali concentrations. Although the surface analysis shows that the treatments promote a clear removal of the outer surface layer of the fibers with the exposition of the inner fibrillar structure and the consequent increase of the fiber surface area, only a secondary increase on the mechanical properties was obtained. The slight increase observed was attributed only to mechanical interlock. Long pullout lengths and neat fiber beads were the main features observed at the fracture surface of the treated and untreated fiber composites. (C) 2003 Wiley Periodicals, Inc. [References: 23]
机译：丝瓜（Luffa cylindrica）形成一种天然垫，它改变了脆性热固性树脂基复合材料的裂纹路径，从而导致了受控的断裂模式并提高了复合材料的韧性。然而，丝瓜作为增强材料的使用受到非常弱的纤维-基质界面的限制。在这项工作中，丝瓜纤维在两个温度下以不同的碱浓度进行了碱处理。尽管表面分析表明，通过内部纤维状结构的暴露，这些处理促进了纤维外表面层的清除，并因此增加了纤维表面积，但仅获得了机械性能的二次增加。观察到的轻微增加仅归因于机械互锁。在处理过的和未处理过的纤维复合材料的断裂表面观察到的主要特征是长拉出长度和整洁的纤维珠。 （C）2003 Wiley Periodicals，Inc. [参考：23]

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