Morphology and mechanical properties of unidirectional sisal-epoxy composites
Morphology and mechanical properties of unidirectional sisal-epoxy composites
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DOI：
10.1002/app.10475
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发表时间：
2002-06-24
影响因子：
3
通讯作者：
Toledo, RD
中科院分区：
文献类型：
--
作者：
Oksman, K;Wallström, L;Toledo, RD
植物纤维在复合材料中的应用越来越受到关注。它们是可再生资源，废物管理比玻璃纤维更容易。研究了用树脂传递模塑（RTM）法制备的单向剑麻-环氧复合材料的纵向刚度、强度和形貌。马蹄形剑麻纤维束（技术纤维）在基体中分布不均匀，与许多木质复合材料不同，管腔未被聚合物基体填充。技术剑麻纤维在复合材料中表现出比技术纤维更高的有效模量（40 GPa比24 GPa）。相比之下，复合材料中的有效技术纤维强度估计约为400兆帕，而测量的技术纤维拉伸强度为550兆帕。讨论了产生这些现象的原因。(C) 2002。公司。
Plant fibers are of increasing interest for use in composite materials. They are renewable resources and waste management is easier than with glass fibers. In the present study, longitudinal stiffness and strength as well as morphology of unidirectional sisal-epoxy composites manufactured by resin transfer molding (RTM) were studied. Horseshoe-shaped sisal fiber bundles (technical fibers) were nonuniformly distributed in the matrix, In contrast to many wood composites, lumen was not filled by polymer matrix. Technical sisal fibers showed higher effective modulus when included in the composite material than in the technical fiber test (40 GPa as compared with 24 GPa). In contrast, the effective technical fiber strength in the composites was estimated to be around 400 MPa in comparison with a measured technical fiber tensile strength of 550 MPa. Reasons for these phenomena are discussed. (C) 2002 Wiley Periodicals. Inc.