DIN EN ISO 22007-4-2017 塑料.导热系数和热扩散系数的测定.第4部分:激光闪光法(ISO 22007-4-2017);德文版本EN ISO 22007-4-2017
Plastics - Determination of thermal conductivity and thermal diffusivity - Part 4: Laser flash method (ISO 22007-4:2017); German version EN ISO 22007-4:2017
This part of ISO 22007 specifies a method for the determination of the thermal diffusivity of a thin solid disc of plastics in the thickness direction by the laser flash method. This method is based upon the measurement of the temperature rise at the rear face of the thin-disc specimen produced by a short energy pulse on the front face. The method can be used for homogeneous solid plastics as well as composites having an isotropic or orthotropic structure.