Method of synthesizing a thermally conductive and stretchable polymer composite

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United States of America Patent

PATENT NO 11732172
APP PUB NO 20200362218A1
SERIAL NO

16766121

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Abstract

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A method for synthesizing a thermally conductive and stretchable elastomer composite comprises mixing liquid metal and soft material (e.g., elastomer) in a centrifugal or industrial shear mixer under conditions such that the liquid metal forms microscale liquid metal droplets that are dispersed in the soft elastomer. Liquid metal-embedded elastomers, or “LMEEs,” formed in this manner dramatically increase the fracture energy of soft materials up to 50 times over an unfilled polymer. This extreme toughening is achieved by means of (i) increasing energy dissipation, (ii) adaptive crack movement, and (iii) effective elimination of the crack tip. Such properties arise from the deformability and dynamic rearrangement of the LM inclusions during loading, providing a new mechanism to not only prevent crack initiation, but also resist the propagation of existing tears for ultra-tough, highly functional soft materials.

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Patent Owner(s)

Patent OwnerAddress
CARNEGIE MELLON UNIVERSITY5000 FORBES AVENUE PITTSBURGH PA 15213

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bartlett, Michael D Ames, US 21 366
Kazem, Navid Pittsburgh, US 11 32
Majidi, Carmel Pittsburgh, US 44 329

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