超临界CO_2流体处理工艺对木材渗透性的影响  

The Effects of Treatment Technology of Supercritical CO_2 Fluid on Wood Permeability

作　　者：肖忠平[1] 陆继圣[2] 

机构地区：[1]扬州工业职业技术学院,江苏扬州225127 [2]福建农林大学材料工程学院,福建福州350002

出　　处：《福建林业科技》2009年第3期24-27,共4页Journal of Fujian Forestry Science and Technology

基　　金：扬州工业职业技术学院科研启动基金项目;福建省自然科学基金资助项目(项目编号:E0510025)"超临界流体处理木材的机理研究"

摘　　要：以苯—乙醇为夹带剂,研究超临界CO2流体不同处理压力、温度、时间对福建产杉木、马尾松、檫木木材渗透性的影响。结果表明,在35 MPa内,处理压力的增大有利于3种木材渗透性的提高;杉木在处理温度为40℃时,渗透性的变化率达到最大,为493%,马尾松和檫木在处理温度为45℃时,渗透性的变化率达到最大,分别为479%和349%;较佳的处理时间为30 min。The effects of pressure, temperature, and time of different supercritical CO2 fluid treatments on permeability of Chinese fir, masson＇ s pine and Chinese sassafras were studied with benzne-ethanol as entrainment agent. The results indicated that the permeability of chinese fir, masson＇s pine and Chinese sassafras increased when treatment pressure increased under 35 MPa; the permeability change rate of chinese fir increased to 493 %, the highest at treatment temperature of 40℃, and the permeability change rate of masson＇s pine, and Chinese sassafras increased to 479% and 349%, the highest; the proper treatment time was 30 min.

关 键 词：超临界CO2 处理工艺 木材渗透性 

分 类 号：S781.4[农业科学—木材科学与技术]