文献类型：期刊文献

中文题名：热压工艺曲线对竹篾胶合板性能的影响

英文题名：Influence of hot pressing curve on mechanical and physical properties of ply-bamboo

作者：高黎[1,2] 王正[1] 任一萍[1]

第一作者：高黎

机构：[1]中国林科院木材工业研究所;[2]中国林科院林业新技术研究所

年份：2012

卷号：23

期号：5

起止页码：22-25

中文期刊名：木材加工机械

外文期刊名：Wood Processing Machinery

收录：北大核心:【北大核心2011】；

基金：中央级公益性科研院所基本科研业务费专项资金(CAFINT2010C02)

语种：中文

中文关键词：热压工艺曲线;梯度降压;竹篾胶合板;板面平整度

外文关键词：hot pressing curve; pressure decrement time; ply-bamboo; surface flatness

分类号：TS653

摘要：以毛竹为研究对象,通过"热上-热下"工艺制备竹篾胶合板,分析梯度降压曲线中高压时间和梯度降压时间对板材物理力学性能的影响,并与简化的热压工艺曲线进行对比。结果表明:高压时间和梯度降压时间对所测性能均有显著影响;高压时间直接影响产品的厚度回弹偏差,并随着时间延长各项物理力学性能呈上升趋势;梯度降压时间越长,产品性能越高;采用梯度降压曲线的板材综合性能优于采用两段和一段热压曲线制备的板材,尤其是多梯度曲线的板面平整程度是其他两种的3.5和5.2倍。因此选择合理的梯度降压热压曲线是对表面质量有要求的板材质量控制的重要保证。
In this study,Moso bamboo（Phyllostachys pubescens） plywood was manufactured through hot-hot pressing process,and mechanical-physical properties were analyzed affected by different high-pressure time and pressure decrement time,at last the hot pressing curve was compared with simplified curves.The results showed that high-pressure time and pressure decrement time had significant influence on properties;the thickness rebound rate varied obviously by high-pressure time;the properties increased when high-pressure time or pressure decrement time prolonged;the tested properties manufactured from this kind of curve were better than those by one-step or two-step curves,especially that surface flatness was 5.2 or 3.5 times better.It can be concluded that hot pressing curve composed with reasonable pressure decrement is quality assurance when the surface flatness is clearly required.