中低温热处理对竹材材性的影响  

Effect of Heat Treatment in Middle and Low Temperature on the Quarantine of Bamboo

作　　者：刘炀[1] 曹琳[1] 李金朋[1] 

机构地区：[1]北京林业大学,北京100083

出　　处：《河北林业科技》2016年第3期14-17,共4页Journal of Hebei Forestry Science and Technology

基　　金：北京林业大学大学生创新计划项目-质检处理对竹木材材性的影响(x201510022049)

摘　　要：采用温度为75、105、135℃,时间为30min的热处理工艺对毛竹(Phyllostachys edulis)材进行处理,分析不同热处理温度对毛竹材性能的影响。研究表明:随着热处理温度的升高,纤维素含量先上升后下降,综纤维素含量下降,木质素含量变化不大,略有下降。密度先上升后下降,干缩率呈下降趋势。顺纹静曲强度和顺纹抗压强度呈下降趋势,抗弯弹性模量变化较少。Heat treatments of 75℃、105℃and 135℃ for 30 min were applied to bamboo to analyze the impact of different heat treatment temperature on the performance of bamboo.Studies showed that：with the increase of temperature,cellulose content increased and then decreased;whereas holo-cellulose content decreased;lignin content rose.Density rose at first and then decreased,but shrinkage rate declined.MOR parallel to grain and compressive strength parallel to the grain decreased,but shearing strength parallel to grain was less variable.Tear duct internal situation in line with changes in physical pits mechanics.

关 键 词：热处理 竹材 化学成分 力学性能 物理性质 

分 类 号：S781.9[农业科学—木材科学与技术]