Boots – shoes – and leggings
Patent
1988-05-31
1992-03-24
Teska, Kevin J.
Boots, shoes, and leggings
364556, 374 44, 374137, G06F 1520, G01N 2518
Patent
active
050994417
ABSTRACT:
The invention is a method for determining the thermal conductivity of an unknown material using a differential scanning calorimeter. Experiments conducted in a non-adiabatic environment govern the mathematics of the present method. Multiple samples of the unknown material are formed with different lengths and identical cross-sectional areas. Samples of a reference material, having a known thermal conductivity and a density approaching that of the unknown sample, are formed with the same lengths and cross-sectional area as the unknown samples. Each sample is subjected to the same heat rise in a differential scanning calorimeter to determine values of Q heat flow at selected incremental temperatures. A heat equation for the reference sample and the unknown sample is formed and solved for each like length and temperature value of a reference and sample material to determine the thermal conductivity of the unknown sample.
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Thermochimica Acta, 115 (1987), by T. Boddington and P. G. Laye, "The Measurement of Thermal Conductivity by Differential Scanning Calorimetry", pp. 345-350.
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Journal of Applied Polymer Science, vol. 12 (1968), by W. P. Brennan et al., "Thermal Conductivity Measurements with the Differential Scanning Calorimeter", pp. 1800-1802.
Dugas Edward
Eastman Kodak Company
Teska Kevin J.
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