无机材料学报

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PLZT陶瓷纤维/环氧树脂1-3复合材料的制备和性能研究

李坤1; 李金华2; 李锦春1; 陈王丽华3   

  1. 1. 江苏工业学院材料系; 2. 信息科学系, 常州 213016; 3. 香港理工大学应用物理系, 香港九龙
  • 收稿日期:2003-02-24 修回日期:2003-03-31 出版日期:2004-03-20 网络出版日期:2004-03-20

Fabrication and Properties of PLZT Ceramic Fiber/Epoxy 1-3 Composites

LI Kun1; LI Jin-Hua2; LI Jin-Chun1; Helen Lai Wah Chan3   

  1. Department of Materials Science and Engineering; Department of Information Science of Jiangsu Polytechnic University; Changzhou 213016; China; Hong Kong Polytechnic University; Kowloon; Hong Kong; China
  • Received:2003-02-24 Revised:2003-03-31 Published:2004-03-20 Online:2004-03-20

摘要: 以乙酸铅、乙酸镧、乙酸氧锆和钛酸丁酯为原料,用溶胶-凝胶法制备了掺镧锆钛酸铅(PLZT)凝胶纤维.该纤维经热解、烧结后成为直径约25μm的陶瓷纤维.陶瓷纤维的表面和断面形貌的电子扫描图象表明,该陶瓷纤维均匀致密.用阿基米德法测得陶瓷纤维的密度为:7.78×103kg/m3.对于直径为4.4mm、厚度为43μm、陶瓷含量为70%的PLZT陶瓷纤维/环氧树脂1-3复合材料压电片,测得其压电常数d33、机电转换常数kt分别为:410pC/N和0.631.

关键词: 陶瓷纤维, 1-3复合材料, 溶胶-凝胶法, 掺镧锆钛酸铅

Abstract: Using lead acetate, lanthanum acetate, zirconium oxide acetate and titanium butoxide as precursors, lanthanum doped lead zirconate titanate gel fibers were fabricated by the sol-gel method. After being
prolyzed and sintered, The PLZT ceramic fibers with a diameter of 25μm were obtained. The morphology and cross-section of the fibers were studied by SEM. The micrographs show that, these
ceramic fibers are dense and uniform. The density of the fibers is 7.78×103kg/m3, which was measured by Archimedes method. For a PLZT fiber/epoxy 1-3 composite disk with a diameter
of 4.4mm, a thickness of 43μm and ceramic volume fraction of 0.7, its piezoelectric coefficient d33 and electromechanic coefficient kt are 410pC/N and 0.631, respectively.

Key words: ceramic fiber, 1-3 composites, sol-gel, PLZT

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