Thermal conductivity of metal coated polymer foam: Integrated experimental and modeling study
نویسندگان
چکیده
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 concentration pores, ligament defects as well architecture, on thermal transport is important when designing foam-based devices. In this article, we present effective conductivity open-cell polyurethane (PU) (20 PPI) with ~10 ?m thick nickel coating measured by transient plane source (TPS) method. A calibration methodology TPS method developed to obtain accurate measurements. finite element model resistance are transfer in metal coated foams occurring near room temperature. For precisely modeling architecture topology, an X-Ray tomography employed. The models used investigate how Ni thickness affects conductivity. Lastly, discuss assumptions related discrepancy between predictions measurements polymer-metal foams.
منابع مشابه
Hierarchically constructed metal foam/polymer composite for high thermal conductivity
Most polymeric tribological components are inherently insulative, resulting in susceptibility to failure from frictional heating at the PV limit, which is typically reported as a product of the heat flux terms pressure (P) and sliding speed (V). This letter reports on the design of a tribological composite for increased thermal conductivity and PV limit. The control sample is an unfilled compos...
متن کاملEffective thermal conductivity of metal filled polymer composites
Theoretical model for predicting effective thermal conductivity (ETC) of metal filled polymer composites has been developed. The concept of averaging the temperature field within different phases has been used. Resistor model has been applied to determine ETC of polymer composites. A parameter estimation technique has been applied to determine the inclination angle θ. An effort has been made to...
متن کاملMultiscale Modeling of Thermal Conductivity of Polymer/Carbon Nanocomposites
Molecular dynamics simulation was used to estimate the interfacial thermal (Kapitza) resistance between nanoparticles and amorphous and crystalline polymer matrices. Bulk thermal conductivities of the nanocomposites were then estimated using an established effective medium approach. To study functionalization, oligomeric ethylene-vinyl alcohol copolymers were chemically bonded to a single wall ...
متن کاملModeling of Thermal Joint Resistance of Polymer-metal Rough Interfaces
A compact analytical model is developed for predicting thermal joint resistance of rough polymer-metal interfaces in a vacuum. The joint resistance includes two components: i) bulk resistance of the polymer and ii) micro, constriction/spreading resistance of the microcontacts at the interface. Performing a deformation analysis, it is shown that the deformation mode of the polymer asperities is ...
متن کاملEffective thermal conductivity of composite: Numerical and experimental study
In this paper, thermal properties of composites are investigated numerically and experimentally. In the numerical study, finiteelements method is used to modelize heat transfer and to calculate the Effective Thermal Conductivity (ETC) of the composite for three elementary cells, such as simple cubic (SC), body centered cubic (BCC) and face centered cubic (FCC). The effect of the filler concentr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Thermal Sciences
سال: 2021
ISSN: ['1778-4166', '1290-0729']
DOI: https://doi.org/10.1016/j.ijthermalsci.2021.107045