Fiber-Reinforced Epoxy —Thermal Conductivity & Thermal Diffusivity

More and more polymers, metals or ceramics are being reinforced with fibers to improve their bending strength and to adjust them to special applications. In many cases, the fiber reinforcement results in a high degree of anisotropy to the mechanical and thermal transport properties. By employing special sample holders, the flash technique allows analysis of this anisotropy in the thermal diffusivity and thermal conductivity. The measurement example clearly demonstrates that the values for both the thermal diffusivity and thermal conductivity, perpendicular to the fiber direction are significantly lower than the results of the in-plane test (in the fiber direction). (measurement with LFA 447 NanoFlash®)

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.