摘要
采用甲基三乙氧基硅烷(MTES)与正硅酸乙酯(TEOS)共水解获得改性溶胶,然后将溶胶通过真空-加压设备浸注入木材内部,并发生凝胶复合制备陶瓷化木材,解决了TEOS水解溶胶制备的陶瓷化木材脆性大、耐水性差的问题。改性凝胶具有疏水性,降低了陶瓷化木材的吸水增重率,提高了抗压和抗弯曲强度等力学性能。
Wood - ceramic composites which demonstrate some unique characteristics have attracted scientists＇ research attention lately. A modified sol prepared through the methyl triethoxy silane （MTES） hydrolysis process was impregnated into the wood cells with vacuum - pressure cycles. The alternate pressure cycles overcame some harriers of slow and incomplete impregnation that the previous processing method presented. The results indicate that wood - ceramic composites made with the METS modified sol through the alternate pressure cycles exhibit improved water-repellency and plasticity, and the mechanical property is also enhanced.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2009年第3期122-126,共5页
Acta Materiae Compositae Sinica
基金
国家“十一五”科技支撑课题(2006BAD18B06)
国家林业局重点研究项目(2006-53)
关键词
陶瓷化木材
溶胶-凝胶
甲基三乙氧基硅烷
浸人
wood - ceramic composite
sol - gel
methyl triethoxy silane （MTES）
impregnation
