Thermal conductivity of metal coated polymer foam: Integrated experimental and modeling study

Rui Dai, Gokul Chandrasekaran, Jie Chen, Chayton Jackson, Yongming Liu, Qiong Nian, Beomjin Kwon

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Foams offer extremely large surface area per unit mass, making them competitive material for heat exchangers and energy storage systems. Understanding the influence of foam characteristics, i.e., size, distribution and concentration of pores, ligament defects as well as foam architecture, on thermal transport is important when designing the foam-based devices. In this article, we present the effective thermal conductivity of open-cell polyurethane (PU) foam (20 PPI) with ~10 μm thick nickel coating measured by transient plane source (TPS) method. A calibration methodology for TPS method is developed to obtain accurate measurements. A finite element model and thermal resistance model are developed for the heat transfer in metal coated foams occurring near room temperature. For precisely modeling the foam architecture topology, an X-Ray tomography is employed. The developed models are used to investigate how the Ni coating thickness affects the effective thermal conductivity. Lastly, we discuss how the model assumptions are related to the discrepancy between the model predictions and measurements for the polymer-metal foams.

Original languageEnglish (US)
Article number107045
JournalInternational Journal of Thermal Sciences
Volume169
DOIs
StatePublished - Nov 2021
Externally publishedYes

Keywords

  • Effective thermal conductivity
  • Hollow pentagonal dodecahedron model
  • Metal-polymer composite
  • Open cell foam

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

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