ABSTRACT

This paper focuses on the impact of humidity on the physical and mechanical behaviour of the bamboo/flax hybrid fibre-reinforced epoxy matrix composite. Composites made using bamboo fibre, and flax fibre-reinforced epoxy resin is immersed in water at room temperature (25°C) for 60 days and at 85°C for 2 days. The composite undergoes structural and microstructural changes at high temperatures (85°C) in 25 h. At both temperatures, composites that were not treated and treated had the decreased swelling behaviour, with 9% of composites treated with NaOH showing the highest level of swelling. Water absorption in the biocomposite is increasingly influenced by the poor bond between the fibres and the matrix. The results show that the maximum tensile strength for both conditions has an increase of about 2% at room temperature and a 13.6% reduction at 85°C compared with room temperature immersion.

摘要

本文重点研究湿度对竹/亚麻混合纤维增强环氧树脂基复合材料的物理和机械性能的影响。使用竹纤维和亚麻纤维增强环氧树脂制成的复合材料在室温 (25°C) 的水中浸泡 60 天，然后在 85°C 的水中浸泡 2 天。该复合材料在高温（85°C）下在 25 小时内发生结构和微观结构变化。在这两种温度下，未经处理和处理的复合材料的溶胀行为均有所降低，其中 9% 的用 NaOH 处理的复合材料显示出最高水平的溶胀。生物复合材料中的吸水率越来越受到纤维和基质之间不良结合的影响。结果表明，两种条件下的最大拉伸强度在室温下增加了约 2%，在 13.