Method for determining thermal conductivity incorporating differential scanning calorimetry

Claim 3

Equilibrate each sample and said scanning calorimeter at 30.00° C. 2. Initialize the temperature of said scanning calorimeter to 30.00° C. 3. Hold the sample isothermally for 5 min. 4. Ramp the temperature of said scanning calorimeter at 2.00° C./min to 60.00° C. 5. Measure the temperature of each sample, at the end contacting said scanning calorimeter, at each 5° C. rise in said scanning calorimeter between 30.00° C. and 60.00° C.; 6. Hold the sample isothermally for 5 min; (d) forming a Q divided by L value for each sample at each 5° C. interval between 30° C. and 60° C. wherein Q is the value of heat flow through a sample; (e) forming a Q divided by L library of values for each reference sample and for each sample of unknown material of different length L at the same temperatures; (f) forming a thermal conductivity versus Q divided by L computation for each reference sample and for each sample of unknown material of different length at the same temperature utilizing the library of values of step (e); and (g) comparing the computations of step (f) associated with a sample of unknown material against the computations of a reference sample of known K to determine the thermal conductivity K of the sample of unknown material.

Claim 4

Equilibrate each sample and said scanning calorimeter at 30.00° C. 2. Initialize the temperature of said scanning calorimeter to 30.00° C. 3. Hold the sample isothermally for 5 min. 4. Ramp the temperature of said scanning calorimeter at 2.00° C./min to 60.00° C. 5. Measure the temperature of each sample, at the end contacting said scanning calorimeter, at each 5° C. rise in said scanning calorimeter between 30.00° C. and 60.00° C.; 6. Hold the sample isothermally for 5 min; (d) forming a Q divided by L value for each sample at each 5° C. interval between 30° C. and 60° C. wherein Q is the value of heat flow through a sample; (e) forming a Q divided by L library of values for each reference sample and for each sample of unknown material of different length L at the same temperatures; (f) forming a thermal conductivity versus Q divided by L computation for each reference sample and for each sample of unknown material of different length at the same temperature utilizing the library of values of step (e); and (g) comparing the computations of step (f) associated with a sample of unknown material against the computations of a reference sample of known K to determine the thermal conductivity K of the sample of unknown material.