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首页> 外文会议>ICCST8;International Conference on Composite Science and Technology >Fabrication and Characterization of Unidirectional Silk Fibre Composites
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Fabrication and Characterization of Unidirectional Silk Fibre Composites

机译：单向丝纤维复合材料的制备与表征

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摘要

Natural fibres offer a number of benefits as reinforcement for synthetic polymers since they have high specific strength and stiffness, high impact strength, biodegradability etc. The aim of this study is to fabricate and determine the performance of unidirectional silk fibre reinforced polymer composites. In the present initial study, alkali treated silk fibres were incorporated as reinforcing agent, while a mixture of 20% maleic anhydride grafted polypropylene (MAPP) and commercial grade polypropylene (PP) was used as matrix element. The unidirectional composites were fabricated by using hot compression machine under specific pressure, temperature and varying fibre loading. Tensile, flexural, impact and hardness tests were carried out by varying silk fibre volume fraction. Composites containing 45% fibre volume fraction had higher tensile and flexural strength, Young's modulus and flexural modulus compared to other fabricated composites including those with untreated silk fibres. SEM micrographs were taken to examine composite fracture surface and interfacial adhesion between silk fibre and the matrix. These micrographs suggested less fibre pull out and better interfacial bonding for 40% fibre reinforced composites.
机译：天然纤维具有高的比强度和刚度，高的冲击强度，可生物降解性等优点，因此可以作为合成聚合物的增强材料。本研究的目的是制造和确定单向丝纤维增强聚合物复合材料的性能。在目前的初步研究中，将碱处理的蚕丝纤维作为增强剂，而20％马来酸酐接枝聚丙烯（MAPP）和商业级聚丙烯（PP）的混合物用作基质元素。通过使用热压机在特定压力，温度和变化的纤维负载下制备单向复合材料。通过改变丝纤维的体积分数进行拉伸，挠曲，冲击和硬度测试。与其他加工的复合材料（包括未经处理的丝纤维）相比，纤维体积分数为45％的复合材料具有更高的拉伸强度和挠曲强度，杨氏模量和挠曲模量。用SEM显微照片检查复合材料的断裂表面和丝纤维与基体之间的界面粘附力。这些显微照片表明，对于40％的纤维增强复合材料，纤维的拔出更少，界面粘合更好。

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