| 졸겔법에 의한 알루미나 섬유의 제조: (II) TEA 착체졸로부터 방사한 섬유의 특성분석 |
| 최용수, 이해욱1, 이종혁, 박용일, 김창은 |
연세대학교 세라믹공학과
1가야대학교 전자세라믹공학과 |
| The Preparation of Alumina Fiber by Sol-gel Method: (II) Properties of Fiber Spun by TEA Complexed Sol |
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| ABSTRACT |
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The alumina fiber was obtained by extruding the TEA complexed polymeric sol, synthesized by the alkoxide sol-gel method, through nozzle. The purpose of this study was to investigate the properties of fiber spun by TEA complexed sol. The analysis of sol indicated that TEA was bonded at alkoxide precursor and the optimum molar ratio for spinning was 0.5 mole of TEA, 3 mole of H2O. The cross section of the fiber from circular nozzle was not circular but oval, which indicated that the shape of nozzle did not affect the shape of fiber. The diameter of the fiber was about 100 ${mu}{textrm}{m}$ in the state of dried gel fiber, 60${mu}{textrm}{m}$ in calcined fiber, and the tensile strength of the fiber calcined at 90$0^{circ}C$ was 2.1$times$108 Pa. |
| Key words:
TEA complexed polymeric sol, Sol-gel method, Alumina fiber, Fiber cross section, Tensile strength |
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