基于单宁树脂的复合材料的表征

Characterization of a composite based on tannin resin.

作者信息

Njom Abel Emmanuel, Voufo Joseph, Segovia Cesar, Konai Noël, Mewoli Armel, Tapsia Leonnel Karga, Meva'a Jean Raymond Lucien, Pizzi Antonio

机构信息

Department of Mechanical Engineering, ENSET, University of Douala, P.O Box 1872, Douala, Cameroon.

Laboratory of Engineering Civil and Mechanical, National Advanced School of Engineering, University of Yaoundé 1, P.O Box 8390, Yaoundé, Cameroon.

出版信息

Heliyon. 2024 Feb 4;10(4):e25582. doi: 10.1016/j.heliyon.2024.e25582. eCollection 2024 Feb 29.

DOI:10.1016/j.heliyon.2024.e25582

PMID:38370179

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10867651/

Abstract

The tannin extract of was used in the preparation of a 3 % paraformaldehyde resin for the manufacture of particleboard. This tannin is of the procyanidin type associated with furan residues. The modulus of elasticity of the resin obtained after the thermomechanical analysis is 3825 MPa. The TGA performed on the panels obtained shows three degradation zones with a thermal stability zone between 74 and 210 °C. These panels have good thermomechanical properties. The values of the best density, internal bond, modulus of elasticity in flexion (MOE) and resistance to flexion (MOR) are respectively 658 kg/m; 0.52 MPa; 2035.4 MPa; 16.3 MPa. These results classify this panel for generalinterior construction and furniture uses according to the NF EN 312 standard.

摘要

该提取物的单宁用于制备3%的多聚甲醛树脂，用于制造刨花板。这种单宁属于与呋喃残基相关的原花青素类型。热机械分析后获得的树脂弹性模量为3825兆帕。对所得板材进行的热重分析显示有三个降解区，热稳定区在74至210°C之间。这些板材具有良好的热机械性能。最佳密度、内结合强度、抗弯弹性模量（MOE）和抗弯强度（MOR）的值分别为658千克/立方米；0.52兆帕；2035.4兆帕；16.3兆帕。根据NF EN 312标准，这些结果将该板材归类为一般室内建筑和家具用途。