METHOD OF DETERMINING HEAT CONDUCTIVITY OF PARTICLES OF SOLID MATERIALS AT HIGH TEMPERATURES Russian patent published in 2020 - IPC G01N33/24 G01V9/00 E21B49/00 G01N25/20 

FIELD: measurement technology.

SUBSTANCE: invention relates to investigation of thermal properties of particles of solid materials at high temperatures. In the method implementation, particles of solid material are ground, a mixture is made by mixing in a specified ratio the ground particles of solid material with the filler material, while maximally removing air from the mixture, forming a solid sample of the mixture, determining volume fractions of components of the sample for investigation – air, crushed particles of solid material and filler material. At that, before mixture preparation, filler material is selected, which can be converted to solid state, then, before mixture preparation, heat conductivity of filler material in its solid state is measured at different temperatures in given temperature range and dependence of filler material heat conductivity on temperature in specified temperature range is determined, effective heat conductivity of the sample of the mixture is measured at different temperatures in a given temperature range. Further, thermal conductivity of particles of solid material is determined at different temperatures in given temperature range from ratio describing effective heat conductivity of specimen of mixture of particles of solid material with filler material.

EFFECT: broader functional capabilities of determining heat conductivity of particles of solid material.

5 cl, 2 ex, 1 tbl