RT info:eu-repo/semantics/article
T1 Evaluation of methods to accurately characterize the thermal conductivity of micro-and nanocellular polymers based on poly(methyl-methacrylate) (PMMA) produced at lab-scale
A1 Sánchez Calderón, Ismael
A1 Sillero, Ángel
A1 Lizalde Arroyo, Félix
A1 Bernardo García, Victoria
A1 Martín de León, Judit
A1 Rodríguez Pérez, Miguel Ángel
K1 Nanocellular polymers
K1 Polímeros nanocelulares
K1 Thermal conductivity
K1 Conductividad térmica
AB The characterization of the thermal conductivity of new and enhanced thermal insulators developed at lab-scale is a challenge. The small dimensions of the prototypes make impossible the use of the conventional techniques because steady-state methods require large samples. Furthermore, the accuracy of transient methods to measure the thermal conductivity is not clear. In this work, we compare four different approaches to measure the thermal conductivity of small prototypes of nanocellular poly(methyl-methacrylate) (PMMA). Both steady-state and transient techniques are used. Results show that the transient plane source method is not suitable for the characterization of these materials (the deviation from the steady-state methods is on average higher than 15%). In addition, two different approaches for measuring the thermal conductivity of small samples via a steady-state technique are proposed and validated.
PB Elsevier
SN 0142-9418
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/56002
UL https://uvadoc.uva.es/handle/10324/56002
LA eng
NO Polymer Testing, 2022, vol. 17, 107842
NO Producción Científica
DS UVaDOC
RD 01-may-2024