One method for characterizing the contact conductance of Thermal Interface Materials (TIMs) is the steady state one dimensional heat flow method typified by ASTM D5470. A test apparatus and procedure were developed which use the basic theory of steady state testing TIMs and improves upon the accuracy and repeatability of the standard test. This procedure and apparatus were used to test the contact conductance of the interface four commercial available TIMs. These materials include: Laird Tflex 720, Laird Tmate 2905c, Chomerics Cho-Therm T500, and Chomerics Cho-Therm 1671. It was found that the Laird products underperformed the available manufacturer published values and the Chomerics products only met performance expectations at relatively high clamping pressures (400 psi).
- Heat Transfer Division
Characterization of Thermal Interface Materials Using a Steady State Experimental Method
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Sponagle, B, & Groulx, D. "Characterization of Thermal Interface Materials Using a Steady State Experimental Method." Proceedings of the ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 2: Heat Transfer Enhancement for Practical Applications; Fire and Combustion; Multi-Phase Systems; Heat Transfer in Electronic Equipment; Low Temperature Heat Transfer; Computational Heat Transfer. Rio Grande, Puerto Rico, USA. July 8–12, 2012. pp. 641-648. ASME. https://doi.org/10.1115/HT2012-58262
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