文献类型：期刊文献

中文题名：增强-热处理桉树木材物理力学性能分析

英文题名：Physical and mechanical property analysis about Eucalyptus Pellita after impregnation-strengthen and high-heat treatment

作者：刘君良[1] 阳财喜[1] 王雪花[1]

第一作者：刘君良

机构：[1]中国林业科学研究院木材工业研究所

年份：2010

期号：3

起止页码：1-4

中文期刊名：木材加工机械

外文期刊名：Wood Processing Machinery

语种：中文

中文关键词：浸渍增强;高温热处理;粗皮桉;干缩率;弹性模量

外文关键词：impregnation-strengthen; high-heat treatment; Eucalyptus Pellita; percentage of shrinkage; MOE

分类号：S781.29

摘要：采用水溶性MUF树脂浸渍增强与热处理相结合的方法对粗皮桉木材进行改性处理。MUF树脂浓度25%,通过真空加压浸渍工艺处理粗皮桉木材,获得增重率为15.6%处理材。真空热处理试验选用不同温度(160℃、180℃、200℃、220℃、240℃)、不同时间(2h、4h、6h、8h、10h)处理粗皮桉素材和浸渍增强处理材。对比分析二者在不同热处理工艺条件下的物理、力学性能指标,结果表明:随热处理温度的升高、时间的延长,无论素材还是浸渍增强处理材,失重率在逐渐增大、径弦向干缩率逐渐增大、弹性模量及抗弯强度逐渐降低。但是在同样的热处理温度和时间条件下,浸渍增强处理材的各项指标明显优于素材。
Water-soluble MUF resin impregnation and high-heat treatment methods were adopted to modify Eucalyptus Pellita performance.Under impregnation process conditions,consistence of the MUF was 25%,and the weight gain percentage was 15.6%.Temperature used in the experiment was 160℃,180℃,200℃,220℃,240℃,and the processing time was 2h,4h,6h,8h and 10h in file.Comparing the physical and chemical property in the two treatment methods,results were found that： as the temperature ascending and processing time expending,both of the un-impregnated and impregnated wood the weight loss,radial and tangential shrinkage enhanced,MOE and bending strength declined gradually.When the processing conditions were the same,performance of the impregnated wood was better than the unimpregnated one.