连续莫来石陶瓷纤维的制备研究  

Study on Preparation of Continuous Mullite Ceramic Fibres

作　　者：王淑峰[1] 刘立强[1] 姚树玉[1] 

机构地区：[1]山东科技大学材料科学与工程学院微结晶材料实验室,青岛266510

出　　处：《硅酸盐通报》2006年第3期15-19,共5页Bulletin of the Chinese Ceramic Society

摘　　要：采用异丙醇铝和氯化铝作铝源，正硅酸乙酯作硅源，通过溶胶-凝胶法合成含有Al-O-Si长链的溶胶，干法纺丝制备莫来石连续纤维。对溶胶及凝胶进行了FT-iR分析和TG-DTA分析，研究了其光谱和热学性质，并对烧结后的纤维做SEM观察、XRD分析、XRF分析等。测试结果表明，在前驱体溶胶中含有Al-O-Si及Si-O-Si等为骨架的长链，具有较好的可纺性和稳定性；所得纤维直径在十几个微米，晶粒比较细小，在100～200hm之间；烧结过程中没有其它晶相出现。Using Al（OC3HT）3 and AlCl3 as the source of Al and TEOS as the source of Si, the sol containing Al-O-Si long chain was synthesized by sol-gel method, and the continuous mullite fibers were prepared by air spinning. The sol and gel were studied by FT-IR and TG-DTA for their infrared spectra and thermotics character, the sintered fibres were observed and analyzed by SEM, XRD and XRF. The results show that the precursor sol has Al-O-Si and Si-O-Si long chains and has preferable spinning ability and stability, the diameter of the obtained fiber is 10-20μm, the size of the mullite crystals is 100-200nm; there are no other crystal grains to be observed in the sintering process except mullite crystals.

关 键 词：莫来石 连续纤维 溶胶-凝胶法 

分 类 号：TQ174.758[化学工程—陶瓷工业] TS202.3[化学工程—硅酸盐工业]