Method of forming electrically and thermally conductive polyolefin-perovskite nanomaterial composites having increased dielectric permittivity and breakdown-induced electrical and thermal conduction pathways

Abstract

A method of forming a polyolefin-perovskite nanomaterial composite which contains oriented electrically and thermally conductive pathways. The method involves milling a polyolefin with particles of a perovskite nanomaterial, molding to form a composite plate, and subjecting the composite plate to an AC voltage. The AC voltage forms oriented electrically and thermally conductive pathways by partial dielectric breakdown of the composite. The presence of the oriented electrically and thermally conductive pathways gives the polyolefin-perovskite nanomaterial electrical and thermal conductivity and dielectric permittivity higher than the polyolefin alone.

Description

BACKGROUND OF THE INVENTIONTechnical Field[0001]The present invention relates to a method of preparing a polyolefin-perovskite nanomaterial composite utilizing application of an AC voltage, and a polyolefin-perovskite nanomaterial composite made by the method, optionally having oriented electrically and thermally conductive pathways.Description of the Related Art[0002]The “background” description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description which may not otherwise qualify as prior art at the time of filing, are neither expressly or impliedly admitted as prior art against the present invention.[0003]Polyolefins have a number of properties that are advantageous for applications in a wide variety of products and industries such as consumer goods, packaging, medical products, and safety equipment. Specifically...

AI Technical Summary

Benefits of technology

The method results in a composite with enhanced thermal conductivity, electrical conductivity, and dielectric permittivity, suitable for electronics applications without compromising flexibility and toughness, by forming dendritic conductive channels within the polyolefin matrix.

Problems solved by technology

The same low electrical and thermal conductivity, however, is disadvantageous for use in certain electronics applications where higher values of these properties are desirable.

While the decrease in the dielectric permittivity may be advantageous for creating a highly insulating polyolefin material for insulating applications, this lower dielectric permittivity may be disadvantageous for other applications.

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