压缩工艺对甘油预处理压缩木性能的影响  

Effect of Compressing Technology on Compressed Wood Pretreated with Glycerin

作　　者：闫丽[1] 曹金珍[2] 崔永志[3] 

机构地区：[1]西北农林科技大学机械与电子工程学院,陕西杨凌712100 [2]北京林业大学材料科学与技术学院,北京100083 [3]东北林业大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《木材工业》2014年第1期14-17,共4页China Wood Industry

基　　金：西北农林科技大学基本科研一般项目"膨胀剂与细胞壁主成分的相互作用机理"(QN2011140);中国博士后科学基金"甘油预处理木材炭化机理研究"(2012M512032)

摘　　要：采用甘油水溶液预处理青杨木材,然后在不同热压温度及保压时间条件下制备压缩木,考察其微观构造、变形回复率及表面硬度。结果表明:热压温度越高、保压时间越长,木材压缩变形回复率越低,但保压时间过长会导致压缩木的表面硬度降低。优化压缩工艺为:热压温度180℃、保压时间30min;或热压温度160℃、保压时间60min。Poplar samples were pretreated with a 50%（volume fraction） glycerin solution and then compressed at various temperatures and times. The samples were then measured and analyzed for recovery ratio, surface hardness and microscopic. The results showed that the recovery ratio decreased while the compressive temperature and time increased but the surface hardness was reduced when the compressive time was longer than 60 min. The optimum processing parameters was 30 min compression at 180℃ or 60 min compression at 160 ℃.

关 键 词：压缩木 压缩工艺 甘油 回复率 微观构造 表面硬度 

分 类 号：TS653.7[轻工技术与工程] S781.2[农业科学—木材科学与技术]