甲基三乙氧基硅烷改性溶胶制备陶瓷化木材的性能

基金项目: 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)

详细信息

Performance of wood-ceramic composites impregnated with methyl triethoxy silane modified sol

摘要

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。
- 陶瓷化木材 /
- 溶胶-凝胶 /
- 甲基三乙氧基硅烷 /
- 浸入
Abstract: Wood-ceramic composites which demonst rate some unique characteristics have at tracted scientists’ research at tention 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 barriers 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.
- wood-ceramic composite /
- sol-gel /
- methyl triethoxy silane (MTES) /
- impregnation