天然纤维作为通过HiPerDiF方法生产的取向不连续聚合物复合材料中的可持续增强成分。

Natural Fibres as a Sustainable Reinforcement Constituent in Aligned Discontinuous Polymer Composites Produced by the HiPerDiF Method.

作者信息

Kandemir Ali, Longana Marco L, Panzera Tulio H, Del Pino Gilberto G, Hamerton Ian, Eichhorn Stephen J

机构信息

Department of Aerospace Engineering, Bristol Composites Institute, School of Civil, Aerospace, and Mechanical Engineering, University of Bristol, Queen's Building, University Walk, Bristol BS8 1TR, UK.

Centre for Innovation and Technology in Composite Materials-CITeC, Department of Mechanical Engineering, Federal University of São João Del Rei-UFSJ, São João Del-Rei 36307-352, Brazil.

出版信息

Materials (Basel). 2021 Apr 10;14(8):1885. doi: 10.3390/ma14081885.

DOI:10.3390/ma14081885

PMID:33920098

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8069299/

Abstract

Sustainable fibre reinforced polymer composites have drawn significant attention in many industrial sectors as a means for overcoming issues with end-of-life regulations and other environmental concerns. Plant based natural fibres are considered to be the most suitable reinforcement for sustainable composites since they are typically from renewable resources, are cheap, and are biodegradable. In this study, a number of plant based natural fibres-curaua, flax, and jute fibres-are used to reinforce epoxy, poly(lactic acid) (PLA), and polypropylene (PP) matrices to form aligned discontinuous natural fibre reinforced composites (ADNFRC). The novel HiPerDiF (high performance discontinuous fibre) method is used to produce high performance ADNFRC. The tensile mechanical, fracture, and physical (density, porosity, water absorption, and fibre volume fraction) properties of these composites are reported. In terms of stiffness, epoxy and PP ADNFRC exhibit similar properties, but epoxy ADNFRC shows increased strength compared to PP ADNFRC. It was found that PLA ADNFRC had the poorest mechanical performance of the composites tested, due principally to the limits of the polymer matrix. Moreover, curaua, flax (French origin), and jute fibres are found to be promising reinforcements owing to their mechanical performance in epoxy and PP ADNFRC. However, only flax fibre with desirable fibre length is considered to be the best reinforcement constituent for future sustainable ADNFRC studies in terms of mechanical performance and current availability on the market, particularly for the UK and EU.

摘要

可持续纤维增强聚合物复合材料作为一种克服报废法规问题和其他环境问题的手段，在许多工业领域引起了广泛关注。植物基天然纤维被认为是可持续复合材料最合适的增强材料，因为它们通常来自可再生资源，价格便宜且可生物降解。在本研究中，使用了多种植物基天然纤维——库拉索纤维、亚麻纤维和黄麻纤维——来增强环氧树脂、聚乳酸（PLA）和聚丙烯（PP）基体，以形成取向不连续天然纤维增强复合材料（ADNFRC）。采用新型HiPerDiF（高性能不连续纤维）方法来生产高性能ADNFRC。报告了这些复合材料的拉伸力学、断裂和物理（密度、孔隙率、吸水率和纤维体积分数）性能。在刚度方面，环氧树脂和PP基ADNFRC表现出相似的性能，但与PP基ADNFRC相比，环氧树脂基ADNFRC的强度有所提高。研究发现，PLA基ADNFRC在所测试的复合材料中力学性能最差，主要是由于聚合物基体的局限性。此外，由于库拉索纤维、亚麻纤维（法国产地）和黄麻纤维在环氧树脂和PP基ADNFRC中的力学性能，它们被认为是有前途的增强材料。然而，就力学性能和目前市场上的可得性而言，特别是对于英国和欧盟，只有具有理想纤维长度的亚麻纤维被认为是未来可持续ADNFRC研究的最佳增强成分。