热压温度及板材密度对竹木复合层积材顺纹抗压强度的影响  

Influence of hot-pressing temperature and board density on compressive strength of bamboo-wood composite LVL

作　　者：张晓春[1] 蒋身学[1] 张齐生[1] 

机构地区：[1]南京林业大学竹材工程研究中心,南京210037

出　　处：《林业科技开发》2011年第2期45-47,共3页China Forestry Science and Technology

基　　金：国家"十一五"科技支撑计划"以竹代木高效利用关键技术装备与开发"(2006BAD11A16)

摘　　要：通过单因变量两因素重复试验,以毛竹竹篾和桦木单板为原料,使用酚醛树脂胶黏剂压制竹木复合层积材,分析热压温度及板材密度对竹木复合层积材顺纹抗压强度的影响。结果表明,在试验选定因素水平范围内,热压温度和板材密度对竹木复合层积材顺纹抗压强度影响显著,板材顺纹抗压强度随热压温度的升高而增强,但145℃与160℃两水平之间差异并不显著;不同密度对板材顺纹抗压强度的影响差异显著,板材的顺纹抗压强度随板材密度的增大而增大;在其他工艺参数相对不变的情况下,热压温度与板材密度的交互作用对板材顺纹抗压强度的影响并无显著的影响。Two-factor experiments were carried out to study the effects of hot-pressing temperature and board density on compressive strength of bamboo-wood composite LVL.The tested boards were made from bamboo strips near bamboo green and birch veneers using phenolic-formaldehyde adhesive.The results showed that hot-pressing temperature and board density had a significant effect on the compressive strength parallel to the grain,which was enhanced with the rise of hot-pressing temperature.But the value difference between 145℃ and 155 ℃ was not significant.Board density had a significant effect on the compressive strength,which increased with the increase of board density.The interaction of hot-pressing temperature and board density had no significant effect on the compressive strength parallel to the grain.

关 键 词：热压温度 板材密度 竹木复合层积材 抗压强度 

分 类 号：S781.7[农业科学—木材科学与技术]