METHOD OF DETERMINING THERMAL CONDUCTIVITY OF HEAT-SHIELDING COATINGS OF HIGHLY THERMALLY CONDUCTIVE MATERIALS

摘要

FIELD: heating.;SUBSTANCE: method is implemented by two thermal effects on two-layer plate with the subsequent cooling, measurement of temperature difference and heat flux. The sample is set with the surface of coating on the heat receiver and the heater. The temperature difference is measured at the points on the opposite surface of the plate, one of which is located on the boundary closest to the heater. Additionally the temperature difference is measured between this point and the environment. The integration starting time is set at the first cooling, and the termination is determined during the second cooling, upon reaching the same temperature difference that at the start. The thermal conductivity is determined by the formula.;EFFECT: increase in accuracy and simplification of determining the thermal conductivity.;3 dwg