Abstract
The aim of this work is to measure the thermal conductivity of nylon 66, using a steady-state temperature field. To this end, an experimental apparatus was designed to provide the fundamental conditions for one-dimensional heat conduction, under steady state. A heat flux sensor was placed on the center of the upper face to measure a constant heat flux supplied by electrical resistance. Two type-k thermocouples were positioned to measure the temperature drop between the plate faces. Then, these measures are substituted into a mathematical model to determine the thermal conductivity of the material under analysis. The uncertainty assessment using the Monte Carlo method indicates low dispersion of the thermal conductivity, about 2.00%, at a confidence level of 95.45%. This indicates a good precision of the experimental apparatus developed, enabling its application with other non-conductor materials, when the conditions established in the mathematical modelling are strictly followed.
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Acknowledgements
The authors would like to thank the Brazilian National Council for Scientific and Technological Development (CNPq), the Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES), and the Research Support Foundation of the State of Minas Gerais (FAPEMIG).
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José Ricardo Ferreira Oliveira: Conceptualization, Methodology, Validation, Investigation, Writing – original draft, review & editing.
José Aguiar dos Santos Júnior: Methodology, Validation, Investigation, Writing – original draft.
Vinícius Soares Medeiros: Methodology, Investigation, Writing – review & editing.
Gilmar Guimarães: Conceptualization, Resources, Supervision.
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Ferreira-Oliveira, J.R., dos Santos-Junior, J.A., Medeiros, V.S. et al. Thermal Conductivity Measurement of a Polymer Material Using a Steady-State Temperature Field. Exp Tech 47, 483–491 (2023). https://doi.org/10.1007/s40799-022-00566-5
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DOI: https://doi.org/10.1007/s40799-022-00566-5