The Effect of Furfurylation Using Different Processes on Dimensional Stability and Durability of Bam

来源 :第六届全国生物质材料科学与技术学术研讨会 | 被引量 : 0次 | 上传用户:ytmfnxkjy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Furfurylation of wood is a very promising modification process,which can produce wood with better moisture resistance,increased dimensional stability,and effective durability resistance to fungi simultaneously.The aim of this work was to evaluate the suitability of the furfurylation process for bamboo strips.For impregnation two different processes were applied.The first process(S represent Soaking process)consists of 36 h of soaking at normal pressure.The second process(V-P represent Vacuum-Pressure process)was more severe and consists of 30 min of vacuum,3 h pressure(0.5 MPa)and 36 h of soaking at normal pressure.Weight percent gain(WPG),equilibrium moisture content(EMC),anti-swelling efficient(ASE),modulus of rupture(MOR),modulus of elasticity(MOE),parallel-to-grain compressive strength(CS)and durability resistance to mould were used to determine the effective of furfurylation of bamboo with different processes.It turned out that two furfurylation processes improved the mechanical properties of bamboo and showed an interesting potential to improve the durability resistance against mould fungi of bamboo.Although the second process(V-P)produced bamboo strips with higher WPG and better durability resistance to mould,the ASE value was negative which revealed the dimensional stability was worse than control bamboo.However,the furfurylated bamboo treated by the first process(S)showed improved dimensional stability.
其他文献
  研究了湿度循环作用过程中木材动态黏弹性的响应.测定了10.65%含水率(30℃,58%RH)的杉木试样在7次湿度循环过程中(90-10%RH)贮存模量和损耗因子的经时变化.结果表明,经过7次
会议
  随着社会的飞速发展,我国木材资源的紧缺现象日益突出,竹质材料越来越受到人们的喜爱;感性功能在现代的产品设计中所占比重越来越大,其中触觉方面的设计非常重要。本文采用语
会议
  Tree transpiration can cause a rapid decrease of moisture content(MC)in the tree trunk when tree is felled.In this study,eight poplar trees(Populus alba L.v
会议
蚊媒传播的疟疾是一种严重危害人类健康和生命的热带传染病,在全世界人群中具有很高的发病率和致死率,已成为全球最重要的公共卫生问题之一,世界卫生组织已将疟疾和艾滋病、
持久性有机污染物(Persistent organic pollutants,POPs)通常具有高毒性,并伴随有强烈恶臭且容易在生物体内聚集。其不仅是一种非常有害的空气污染物,而且容易导致生物体的“三致”效应,即致癌、致畸、致突变。因此,采取实用和高效的方法来消除空气中的POPs是非常必要的。目前,在所有可行的处理技术中,催化燃烧法以其具有操作温度低、能耗小、催化效率高等优点而成为处理POPs备受
  采用生长速率法测定了甲醇、乙酸乙酯、丙酮、三氯甲烷和蒸馏水5种不同溶剂提取物对木腐菌生长的抑制作用,以探明黄枝润楠木材的抑菌能力.结果表明:提取物的得率与溶剂的极
会议
  应用光学显微镜和扫描电子显微镜,对中国珍贵植物香樟的木材结构进行观察,完善香樟木材解剖构造知识。其主要特征为:木材管孔分布为散孔材,导管分子穿孔板多数主要为单穿孔,极
  随着废旧腐朽木材增长,带来的环境压力也越来越大,废旧木材的利用对于缓解环境压力具有重要的意义.通过研究不同位置的密度变化来表征不同位置杨木木材的腐朽程度,结果表
会议
本文以不同炭化程度杨木为研究对象,采用密粘褶菌(Gloeophyllum trabeum(Pers.)Murrill)方式对其进行侵染12周和土埋法进行侵蚀6周和12周的处理.对比处理前后的化学成分以及
  Aiming at replacing the common(noxious)solvents,ionic liquids have been recently researched for the dissolving of lignin,specifically the deep-eutetic solve
会议