Process and annealing of a liquid metal composite with microstructure control for thermally conductive soft material

Summary:
Iowa State University researchers have developed a material where a liquid metal is embedded into an elastomer. The liquid metal particles can be annealed after stretching providing directionality to a high degree of thermal conductivity. ISURF #04968 describes a material similar to ISURF #04969 but is electrically insulative.

Description:
Incorporation of liquid metal particles into an elastomer creates a soft material with incredible high thermal conductivity. Straining and annealing the material locks the particles in place, increasing thermal conductivity and introducing a degree of directionality to it. The thermal conductivity increases with strain and is one of the highest known for a soft material. Combined with being electrically insulating, this makes ISURF #04968 particularly interesting as a heat sink material.

Advantage:

  • Thermal conductivity increases with strain
  • Electrically insulative
  • Thermal conductivity able to have degree of directionality due to the strain field applied to the material
  • Better thermal performance

Application:
Combination of electrical insulation and high thermal conductivity make this material useful for wiring applications in high heat environments

Patent:
Patent(s) applied for

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Development Stage:
Material needs to be optimized before production.

Website

http://isurftech.technologypublisher.com/technology/48057

Contact Information

TTO Home Page: http://isurftech.technologypublisher.com

Name: Jack Hartwigsen

Title: Technology Marketing Manager

Department: Iowa State Research Foundation

Email: jackh1@iastate.edu

Phone: 515-294-4740