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

Abstract: 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 cells 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.

Key words: lowry method, SiO₂ gels, impregnation wood, wood-SiO₂ aerogel composites, scanning electron microscope-energy dispersive X-ray analysis(SEM-EDAX)