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

Résumé

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 oC, 50 oC and 70 oC), 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..

Citer ce document

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Auteur(s)

Statistiques

Consultations : 1

Téléchargements : 0