Today there are several different techniques available to measure thermal transport properties of different materials. One commonly used group is the Steady State techniques, including Guarded Hot Plate. Several variants are used for insulating materials for buildings, for polymers, etc. Many are standardized by ASTM, ISO and others. Another group is the Transient methods, including Laser Flash (most commonly used for materials with high diffusivity) Hot Wire, Hot Strip and lately the Transient Plane Source, or Gustafsson Probe. Also several of these methods are standardized. The talk will compare different aspects of these methods, like accuracy, ease of use, speed, etc. as well as the commonly known problem with contact resistance. By referring to several practical applications, a comparison of pros and cons for the different methods will be given, with specific relevance to polymers in bulk and sheet (or film) shape, both at RT and at lower and higher temperatures.
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