High Conductivity, Flexible Fabrics

Event Date: March 30, 2018

Students:

  • Aaditya Candadai

Alumni:

  • RadhaKrishna Korlam (PURE 2018)
  • Emily Nadler (Spring 2019 - Spring 2020)
  • Jack Burke (Summer 2019)

Sponsor:

CTRC
 

Joint project with Prof. Justin Weibel

Project Overview:

w-power, wearable electronic devices require methods of attachment to non-flat surfaces, specifically the human form, as well as thermal management techniques to meet ergonomics-driven temperature constraints. Thermally conductive polymer fabrics can potentially serve as the device substrate while simultaneously providing heat spreading functionality. In this project, an intrinsic high thermal conductivity polymer material is identified, and its thermal properties are characterized in the fiber, yarn and fabric form by developing an infrared microscopy-based experimental measurement technique. The constructed plain-weave polymer fabric prototype is measured to have a high in-plane effective thermal conductivity (~10 W/mK), and a complementary reduced-order thermal model is also developed to predict effective fabric conductivity behavior. The project also includes design of laser-based non-contact techniques to measure in-plane anisotropy of these materials, as well as bend testing methods to assess the mechanical flexibility of the woven fabrics. The major expected outcome of the project is the development of thermomechanical metrology techniques and baseline experimental characterization results for wearable/flexible fabrics constructed from thermally conductive polymers, indicating great potential for their integration in high-performance wearable electronic packages where heat spreading is a crucial consideration.

 

Fabric Thermal Characterization Test Facility

 

Fabric bending stiffness test

Characterization of in-plane spreading anisotropy leveraging IR microscopy and laser heating

Selected Related Publications: