Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/1958
Title: Piezoelectric ceramics - piezoelectric polymer compound material and making method = 压电陶瓷 - 压电性聚合物复合材料及其制造方法
Authors: Chan, Helen L. W. (陳王麗華)
Zhou, Qifa (周歧發)
Choy, Chung-loong (蔡忠龍)
Zhang, Qingqi (張清琦)
Issue Date: 27-Jun-2001
Publisher: 中华人民共和国国家知识产权局
Source: 中国专利 ZL 98119504.0
Abstract: The present invention relates to a 0-3 type piezoelectric composite material with intensified piezoelectric property for ultrasonic transducer, underwater sound transducer and medical ultrasonic detector and its production method. It is characterized by adopting multi-stage polarization method at the different temperatures to polarize 0-3 type piezoelectric composite material, i. e. firstly, polarizing piezoelectric ceramics being in 0-3 type piezoelectric composite material under the condition of higher than curie temperature of polymer, and then reverse polarizing piezoelectric polymer being in 0-3 type piezoelectric composite material under the condition of lower than curie temperature of polymer so as to implement intensification of piezoelectric property after two phases are combined.
本发明涉及一种用于超声换能器、水声换能器和医用超声探测器的具有增强的压电性能的0—3型压电复合材料,本发明还涉及制造这种复合材料的方法。本发明方法的特征在于采用在不同的温度下多段极化方法极化0—3型压电复合材料。即,先在高于聚合物的居里温度下极化0—3型压电复合材料中的压电陶瓷,然后在低于聚合物的居理温度下反相极化0—3型压电复合材料中的压电性聚合物,从而实现两相复合后的压电性能的增强。
Rights: 专利权人: The Hong Kong Polytechnic University.
Type: Patent
URI: http://hdl.handle.net/10397/1958
Appears in Collections:Patents of PolyU
AP Patents

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