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Layer composite comprising electroactive layers

An electroactive layer and composite technology, applied in piezoelectric-electropolymer transducers, piezoelectric/electrostrictive devices manufacturing/assembly, circuits, etc., can solve problems such as small adjustment strokes

Inactive Publication Date: 2014-04-30
BAYER MATERIALSCIENCE AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, a disadvantage in the prior art is that layer composites with piezoelectric layers comprising increased piezoelectric constants are suitable for sensor applications and energy harvesting
However, the corresponding piezo layers are only conditionally suitable for actuator applications due to the too small possible adjustment path

Method used

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  • Layer composite comprising electroactive layers
  • Layer composite comprising electroactive layers
  • Layer composite comprising electroactive layers

Examples

Experimental program
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Effect test

Embodiment Construction

[0058] figure 1 A schematic view of a first exemplary embodiment of a layer composite 2 according to the invention is shown. The layer composite 2 shown comprises two electroactive layers 4 and 6 .

[0059] The electroactive layer 4 is a dielectric elastomer layer 4 . The dielectric elastomer layer 4 advantageously has a relatively high dielectric constant. Furthermore, the dielectric elastomer layer 4 advantageously has a low mechanical rigidity. This leads to possible elongation values ​​of up to approximately 300%. The dielectric elastomer layer 4 can be used in particular for actuator applications.

[0060] The second electroactive layer 6 is designed as a piezoelectric layer 6 . The piezoelectric layer 6 shown can consist, for example, of a suitable piezoelectric polymer and can be, for example, a piezoelectric polymer film or a ferroelectric film. The piezoelectric layer 6 shown has a polymer layer structure. The polymer layer structure has cavities 10 introduced ...

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PUM

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Abstract

The invention relates to a layer composite (2, 2.1, 2.2, 18), comprising at least two electroactive layers (4, 6) arranged between a first electrically conductive layer (12) and a second electrically conductive layer (14), wherein at least one electrically conductive partial layer (8) is arranged between the at least two electroactive layers (4, 6), and wherein at least one of the at least two electroactive layers (4, 6) is a piezo-layer (6), wherein at least one other of the at least two electroactive layers (4, 6) is a dielectric elastomer layer (4).

Description

technical field [0001] The invention relates to a layer composite comprising at least two electroactive layers arranged between a first electrically conductive layer and a second electrically conductive layer, wherein at least one electrically conductive partial layer is arranged between the at least two electroactive layers, and Wherein at least one of the at least two electroactive layers is a piezoelectric layer. Furthermore, the invention relates to an electromechanical converter device comprising the layer composite and a method for producing the layer composite. Background technique [0002] Plastic composites are used in many applications. For example, corresponding layer composites are used as packaging materials, insulation materials or as building materials. Apart from this general purpose of use, layer composites are used more often as active components in sensor applications or for energy harvesting or energy conversion, so-called energy harvesting. [0003] F...

Claims

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Application Information

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IPC IPC(8): H01L41/083H04R17/00
CPCH01L41/083H01L41/0825H04R17/005H01L41/1132H01L41/27H02N2/18Y10T29/42H10N30/302H10N30/50H10N30/05H10N30/857H10N30/101H04R17/00
Inventor R·格哈德W·维尔格斯J·马斯C·格拉夫H·蒙丁格W·延宁格
Owner BAYER MATERIALSCIENCE AG