ABSTRACT

The characteristics of natural fiber reinforced composites such as light weight, non-abrasive, nonflammable, nontoxic, low cost and biodegradable have grabbed the attention of current researchers in the area of composites. The objective of this study is to examine the interlaminar shear strength of the polyester based wood and woven jute hybrid composite. To accomplish this objective, the following parameters such as (i) wood density, (ii) wood weight ratio, (iii) woven jute type, (iv) number of jute layers, (v) cryogenic treatment duration and (vi) alkaline treatment duration, each at three different levels were picked and optimized using the Taguchi method. The fibers were pretreated with 5% of NaOH solution for different length of time to reduce the moisture absorption. The L₂₇ orthogonal array was selected for the chosen parameters and the required composite materials were fabricated using hand lay-up techniques. The fabricated composites were then subjected to cryogenic treatment by immersing in liquid nitrogen at 77 K for different period of time. The interlaminar shear strength of the fabricated hybrid composites was done according to ASTM standard. The morphological features and degree of dispersions of fibers into the matrix of the fabricated hybrid composites were further studied and discussed.

摘要

天然纤维增强复合材料的重量轻、不磨损、不易燃、无毒、成本低、可生物降解等特点引起了当前复合材料领域研究人员的关注。本研究的目的是检查聚酯基木材和编织黄麻混合复合材料的层间剪切强度。为了实现这一目标，以下参数，例如（i）木材密度，（ii）木材重量比，（iii）编织黄麻类型，（iv）黄麻层数，（v）低温处理持续时间和（vi）碱处理持续时间，每个都在三个不同的水平上被挑选出来，并使用田口方法进行优化。用 5% 的 NaOH 溶液对纤维进行不同时间的预处理，以降低吸湿性。L ₂₇为选定的参数选择正交阵列，并使用手工铺设技术制造所需的复合材料。然后将制造的复合材料浸入77 K的液氮中不同时间进行低温处理。所制造的混合复合材料的层间剪切强度是根据 ASTM 标准进行的。进一步研究和讨论了纤维在制备的混合复合材料基体中的形态特征和分散程度。