文献类型：期刊文献

中文题名：高温热处理对木材强度影响的研究进展

英文题名：Research progress in effect of heat treatment on wood strength

作者：江京辉[1] 吕建雄[1]

第一作者：江京辉

机构：[1]中国林业科学研究院木材工业研究所国家林业局木材科学与技术重点实验室

年份：2012

卷号：36

期号：2

起止页码：133-136

中文期刊名：南京林业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：中央级公益性科研院所基本科研业务费专项资金项目(CAFINT2009K04)

语种：中文

中文关键词：热处理方式;热处理工艺参数;木材强度

外文关键词：heat treatment method; heat treatment process parameter; wood strength

分类号：S781

摘要：从热处理方式、热处理工艺参数及影响强度机制等方面综述高温热处理对木材力学强度的影响。综合认为,不同热处理方式对木材强度影响程度不同。随着热处理温度升高和时间延长,抗弯强度和顺纹抗压强度等部分木材强度逐渐下降;但当处理温度较低时,抗弯弹性模量和表面硬度有所增加,随温度升高,其强度值将下降。不同热处理工艺对木材半纤维素、木素和纤维素定性变化规律是相同的。热处理过程与木材初始状态(含水率和干燥方式),以及热处理参数(温度和时间)交互作用对木材强度影响将是今后研究的方向之一。
This paper reviewed the impact of high temperature heat treatment on the wood mechanical properties from heat treatment method,process parameters and influence mechanism.Through comparative analysis main conclusions could be drawn as follows： the wood strength was varified under different heat treatment method.The general trend for wood heat treatment was that,such as modulus of rupture（MOR） and compression strength parallel to the grain（CSPG） gradually decreased with the increase of the heat treatment temperature and time.At relatively low temperature heat treatment,modulus of elasticity（MOE） and hardness of the wood increased to some extent.As the treatment temperature continued to go up to a certain point,the strength of wood started to drop.In addition,seldom studies were conducted on the interactive effect of the heat treatment process,wood initial state（moisture content and drying method） and heat treatment parameters（temperature and time） on the wood strength.The hemi-cellulose,lignin and cellulose of wood changed following a similar profile under different heat treatment method.Based on the above analysis,some suggestions were proposed in this paper for future research work.