Polymer Tape — Thermal Diffusivity

The LFA 447 NanoFlash® allows easy and fast temperature-dependent measurements of the thermal diffusivity. Additionally, the specific heat can be determined by employing a comparative method. A direct determination of the thermal conductivity is possible, if the bulk density of the material is known. This method was used for the thermophysical properties characterization of a polymer tape between room temperature and 90°C. The calibration standard for the specific heat determination was Pyroceram 9606. It can clearly be seen that both the thermal diffusivity and specific heat changed significantly versus temperature. The resulting thermal conductivity depicts nearly no temperature dependence.

LFA 447 NanoFlash® (specially designed for Scanning Measurements, MTX)

In the LFA 447 NanoFlash®, a powerful Xenon flash lamp is used instead of the laser used in other LFA instruments. An integrated sample changer and easy accessibility to the sample receptacle allow high sample throughput for routine applications up to 300°C.