SiO2溶胶空细胞法浸渍处理木材工艺  

Process of SiO_2 Gels Impregnation Wood by Lowry Method

作　　者：邱坚[1] 李坚[1] 刘一星[1] 

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室

出　　处：《林业科学》2008年第3期124-128,共5页Scientia Silvae Sinicae

基　　金：国家自然科学基金资助项目(30630052)

摘　　要：对SiO2溶胶溶液半限注法浸渍处理紫椴和西南桤木的工艺进行研究。结果表明:SiO2溶胶对木材的渗透应主要考虑压力和加压时间以及树种的影响,考虑木材的变异性所造成的试验数据的波动,确定SiO2溶胶的浸渍工艺条件为压力0.8MPa,压力时间30min,后真空度为0.090MPa,保持10min。通过X射线能谱图分析,在木材细胞壁的位置能看到排列均匀的SiO2,说明在木材外部进行溶胶-凝胶化过程,然后采取空细胞法将溶胶注入到木材中,简化了制备工艺条件,提高了原料利用率。Process of SiO2 gels impregnation basswood and alder wood by lowry method were researched in this paper. The results show that the main factor affected SiO2 gels impregnation is press, press time and category of wood. The variation of wood affect fluctuating data being considered. Process of SiO2 gels impregnation wood press is 0.8 MPa, press time is 30 min, vacuum is 0.090 MPa, vacuum time is 10 min. According to scanning electron microscope-energy dispersive X-ray analysis, the uniformity of SiO2 aerogel can be found in wood ceils that showed the Sol-Gel process can be done out of wood then impregnating into the wood by lowry method as well as utilizing wood bound water method. The SiO2 gels in-situ reaction form wood-SiO2 aerogel composites predigest the fabrication process greatly and used raw material very well than before.

关 键 词：半限注法 SiO2凝胶 木材浸渍 木材-SiO2气凝胶复合材 扫描电镜-能量色散X射线分析 

分 类 号：TQ427.26[化学工程]