Thermal measuring and testing – Determination of inherent thermal property – Thermal conductivity
Patent
1988-09-28
1989-08-29
Cuchlinski, Jr., William A.
Thermal measuring and testing
Determination of inherent thermal property
Thermal conductivity
374 12, 374 33, 374143, 364557, G01N 2518
Patent
active
048611670
ABSTRACT:
An apparatus and method for measurement of the thermal conductivity of polymer melts is disclosed. A sample of material to be measured is placed in an elongated cylindrical container and is heated to a preselected base temperature. A probe placed in the container in contact with the sample contains a transient heating element and a temperature sensor. To determine the thermal conductivity of the sample material, the transient heating element is energized and the resulting changing temperature of the sample material is measured for a short period of time. The rate of temperature change is a measure of the thermal conductivity of the sample material at the base temperature.
REFERENCES:
patent: 3592060 (1971-07-01), Laverman
patent: 3677294 (1972-06-01), Schoenlaub
patent: 4059982 (1977-11-01), Bowman
Sweat, V. E, and Huggins, L. F., "Automation of a Miniature Thermal Conductivity Probe", Conference: Advances in Thermal Conductivity, Lake Ozark, MO (Nov. 5-7 1974), pp. 318-324.
Hands, D.,and Horsfall, F., "A Thermal Conductivity Apparatus for Solid and Molten Polymers", Journal of Physics E, vol. 8, No. 8, pp. 687-690, Aug. 1975.
Katayama, K. et al., "A New Method of Simultaneous Measurement of Several Thermal Properties by Continuous Heating", Heat Transfer-Japanese Research, vol. 1, No. 1 (Jan.-Mar. 1972).
ASTM D 2326-64T, "Thermal Conductivity of Cellular Plastics by Means of a Probe", 1965 Book of ASTM Standards, pp. 473-477.
Hoshi, M. et al., "Transient Method to Measure the Thermal Conductivity of High-Temperature Melts Using a Liquid-Metal Probe", Rev. Sci. Instrum. 52(5), pp. 755-758, May 1981.
Lobo Hubert
Wang Kuo K.
Cornell Research Foundation Inc.
Cuchlinski Jr. William A.
Gutierrez Diego F. F.
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