Fabrication of piezoelectric composites using high temperature dielectrophoresis technique

Sabic Global Technologies B.V. (2018) Fabrication of piezoelectric composites using high temperature dielectrophoresis technique. WO2018029549A1.

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Abstract

A method of making an aligned piezoelectric composite comprising contacting a thermoplastic material with a plurality of piezoelectric particles to form a thermoplastic material and piezoelectric particles mixture; applying an alternating current electric field across the thermoplastic material and piezoelectric particles mixture to structurally align the piezoelectric particles within the alternating current electric field; heating the thermoplastic material and piezoelectric particles mixture to form a molten polymer composite, while continuing to apply the alternating current electric field; maintaining the alternating current electric field across the molten polymer composite; cooling the molten polymer composite to form a structurally aligned piezoelectric composite, while continuing to apply the alternating current electric field; discontinuing the alternating current electric field; and applying a direct current electric field across the structurally aligned piezoelectric composite to align electric dipoles of the piezoelectric particles within the direct current electric field and to produce the aligned piezoelectric composite.

Item Type:	Patent
Subjects:	F100 Chemistry F200 Materials Science J300 Ceramics and Glasses J400 Polymers and Textiles
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Dr Jibran Khaliq
Date Deposited:	13 Mar 2018 11:58
Last Modified:	13 Mar 2018 11:58
URI:	http://nrl.northumbria.ac.uk/id/eprint/33701

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