Influence of Holding Time on the Properties of Alumina-Aluminium Titanate Fiber

Abstract:

Using aluminum chloride, aluminite powders and butyl titanate as raw materials, alumina- aluminum titanate fiber was prepared by sol-gel method at 1200°C. The influences of the holding time on the aspect ratio, the bulk density, the thermal conductivity coefficient and the heating linear shrinkage of the fiber were studied systemically. The results show that the holding time has an important effect on the properties of the fiber. With the increase of the holding time from 0 h to 3 h, the aspect ratio of the fiber decreases from 870 to 210 and the bulk density of the fiber adds from 352 Kg•m-3 to 432 Kg•m-3. Furthermore, the thermal conductivity coefficient of the fiber keeps rising from 0.162 W•m-1•K-1 to 0.199 W•m-1•K-1 and the heating linear shrinkage of the fiber decreases from 2% to 1.82%.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 9-11
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.9
• Online since: April 2010
• Authors: Jian Er Zhou, Xue Bing Hu, Shuang Hua Wang, Yong Qing Wang, Xiao Zhen Zhang
• Keywords: Aspect Ratio, Bulk Density, Fiber, Holding Time

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