Flexible Solutions

Phase Change Materials - Hot Summer Blog Series: Thermal Interface Materials

Posted by Katie Sullivan

Jun 25, 2015 2:07:00 PM


Phase Change Materials

This is the second post in our Hot Summer Blog Series about Thermal Management Materials.  In this post we will focus on Phase Change Materials.  

True to their name, Phase Change Materials are solid at room temperature and soften as temperatures increase.  This softening allows the material to flow and completely fill surface irregularities and gaps between the heat source and the heat sink.  This allows for little to no thermal resistance and very tight bond lines.  Once the thermal interface has been formed it will remain stable until the heat sink is physically removed from the heat source.   

This short video shows the phase change material soften and wet-out as it is heated:




Phase Change Features & Benefits

  • At room temperature in a solid state, PCMs are easy to handle
  • Can be die-cut to a precise shape needed for the application area
  • Offers the same thermal performance as thermal grease without the mess
  • High thermal conductivity
  • Material will not flow out of the interface
  • Usually requires slight clamping pressure for performance


Want to learn more?  Download our Free Guide:  How to Select the Right Thermal Interface Material. 

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Topics: Thermal Management, 2015 Summer Blog Series: Thermal Management