发明名称 |
Piezoelectrics and related devices from ceramics dispersed in polymers |
摘要 |
This invention relates to compositions and processes for the fabrication of piezoelectric composites having improved figures of merit for both sensor and non-sensor applications. These composites comprise piezoelectric particles embedded in a polymer matrix. The improvements of this invention result from discoveries of the effects of polymer bulk compliance, polymer anisotropy, polymer melt index, and polymer/ceramic wettability on performance. The loss corrected figure of merit (ghdh/tan delta ) obtained for the 0-3 composites is as high as 10.5x10-10 m2/N, which is about four times higher than previously published for 0-3 composites of the prior art. Methods are described for the introduction of anisotropy into ceramic particle/polymer composites, so that cancellation effects that degrade the piezoelectric properties of composites can be reduced.
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申请公布号 |
US5951908(A) |
申请公布日期 |
1999.09.14 |
申请号 |
US19980003625 |
申请日期 |
1998.01.07 |
申请人 |
ALLIEDSIGNAL INC. |
发明人 |
CUI, CHANGXING;BAUGHMAN, RAY HENRY;IQBAL, ZAFAR;KAZMAR, THEODORE ROBERT;DAHLSTROM, DAVID KEITH |
分类号 |
H01L41/193;H01L41/18;H01L41/45;(IPC1-7):H01L41/18 |
主分类号 |
H01L41/193 |
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地址 |
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