Impact du comportement hydrophile des fibres de Bambusa Vugaris traitées dans un composite fibres/époxyde en fonctionnement dans le revêtement de maison

Abstract

Abstract The aim of this study is to study the hygrothermal behavior of bamboo fibers extracted by the alkaline method (3% soda) and treated with acetylation for potential use in house and fence siding. 10 g of 5-year-old fibers of "bambusa vulgaris" was soaked in 400 ml of glacial acetic acid, with 50 ml of catalyst (sulphuric acid) for 4 h at 30 ° C. After extraction by the « Improved Hydrophilic Extraction Method » and treatment in the laboratory, the diameter and lateral area observed with a magnification of 2, a 16x eyepiece and a 40x lens using an optical microscope equipped with a Balow lens, show that the fibers were smoothed to more than 3.57%; The absorption studied over three temperature ranges (30 o C, 50 o C and 70 o C), shows that it has decreased by about 20% and can grow with temperature to the limit of 37% after 48 hours of quenching; The composite was manufactured in three types of structure; increasing the rate of treated fibers reduces the hydrophilic character of the composite, it becomes completely hydrophobic from 15%; Increasing the level of treated fibres reduces the hydrophilic character of the composite; and damage to the composite due to the hydrophilic effect of the treated bamboo fibers is less significant..