METHOD FOR DETERMINING HEAT CONDUCTIVITY OF MATERIALS Russian patent published in 2006 - IPC G01N25/00 

FIELD: thermo-physical research.

SUBSTANCE: subject flat sample of known thickness through heat source of given specific power is brought to heat contact by plane with flat standard sample, having lesser thermal resistance, than subject sample, and additional heat source previously mounted thereon. External surfaces of subject and standard samples with thermo-isolated side surfaces are thermostatted at given temperature and temperature in contact plane is measured. Instead of researched sample, additional standard sample is mounted, identical to main one, efficient thermal resistance of standard samples is determined depending on specific power of additional heat sources in same temperature conditions, at which it is required to determine heat conductivity of subject sample. Then, subject sample is mounted again and specific power of additional heat source is selected, for which efficient thermal resistance of standard sample within error limits coincides with thermal resistance of standard sample, and its heat conductivity is determined.

EFFECT: increased precision.

1 dwg