广西林业科学2025，Vol.54Issue(1)：78-84,7.DOI:10.19692/j.issn.1006-1126.20250111
单板疏解程度对桉木重组木性能的影响
Effects of Crushing Degrees of Veneer on Properties of Eucalypt Scrimber
摘要
Abstract
Eucalypt scrimber provides new idea for solving problems of softness,low strength and poor dimen-sional stability of small-diameter eucalypt woods.In order to provide technical references for optimization of preparation process of eucalypt scrimber,and explore effects of crushing degrees of thick veneer on property of eucalypt scrimber,4 mm thick eucalypt rotary veneers were taken as materials,and effects of crushing times on mass,width,thickness and water absorption rate of veneer were analyzed.Taking water absorption rate of ve-neer as evaluation index of veneer crushing degree,five kinds of crushing veneers with water absorption rates from 50% to 90% were selected to prepare scrimbers,and effects of crushing degrees on micro-structure and main properties of scrimber were analyzed.Results showed that loss rate of material mass,width elongation rate,thickness change rate and water absorption rate of eucalypt veneer had positive correlations with crushing times.With increase of veneer crushing degree,cracks on surface of veneer increased,adhesives were easier to enter interiors of veneer,and bonding interfaces expanded.Mechanical properties of scrimber increased or fluc-tuated with increase of veneer crushing degree.When water absorption rate of veneer was 70%,bending proper-ty of scrimber was better,and horizontal shear property was the best.Thickness swelling rate of scrimber de-creased first and then increased with increase of veneer crushing degree,which was the smallest when water ab-sorption rate of veneer was 70% .Property of eucalypt scrimber making by crushing veneers with water absorp-tion rate 70% was better.关键词
疏解单板/桉木重组木/微观形貌/力学性能/耐水性能Key words
crushing veneer/eucalypt scrimber/micro-structure/mechanical property/water resistance property分类
农业科技引用本文复制引用
禤示青,陈桂丹,陈松武,陈安阳,刘晓玲,李东飞..单板疏解程度对桉木重组木性能的影响[J].广西林业科学,2025,54(1):78-84,7.基金项目
广西林业科技推广示范项目(桂林科研[2022]第20号,2023GXLK03) （桂林科研[2022]第20号,2023GXLK03）
广西林科院研究团队专项(2024RT15) （2024RT15）
