Preparation of continuous zirconia fibres from polyzirconoxane synthesized by the facile one-pot reaction

被引：80

作者：

Abe, Y ^{[1
]}

Kudo, T ^{[1
]}

Tomioka, H ^{[1
]}

Gunji, T ^{[1
]}

Nagao, Y ^{[1
]}

Misono, T ^{[1
]}

机构：

[1] Sci Univ Tokyo, Fac Sci & Technol, Dept Ind Chem, Noda, Chiba 278, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 1998年 / 33卷 / 07期

关键词：

D O I：

10.1023/A:1004357405815

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A one-pot reaction of zirconium oxychloride octahydrate (ZOC) with ethyl acetoacetate (Hetac) in the presence of triethylamine was investigated. The reaction was carried out in molar ratios of Hetac/ZOC = 1.0, 1.5, 2.0 to give highly viscous solutions with good spinnability and stability to self-condensation. Polyzirconoxanes (PZOs) were isolated as white powders by reprecipitation of the solutions with tetrahydrofuron (THF)-hexane that were soluble in acetone, methanol and THF. The molecular weight of PZO was Mn = 1000-2000, and was dependent on the molar ratio and the reaction time. Dry spinning of the solution (Hetac/ZOC = 1.5) containing 3 mol% tris(acetylacetonato)yttrium [Y(acac)(3)] gave continuous precursor fibres (3.0Y-PZO). Yttria stabilized zirconia fibres of 12-18 mu m diameter with a tensile strength of 1.4 GPa were obtained by heat treatment of the 3.0Y-PZO at 1100 or 1200 degrees C. The fibre consisted of submicrometre-sized particles of tetragonal crystallites. (C) 1998 Chapman & Hall.

引用

页码：1863 / 1870

页数：8

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