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Total Papers Found: 7

Effect of carbon nanotube interfacial geometry on thermal transport in solid–liquid phase change materials

The thermal conductivities of four composite paraffin phase change materials (PCMs) containing embedded multi-walled carbon nanotubes (MWCNTs) with varying dimensions were determined. The goals of this study were to investigate the interfacial thermal resistance between two MWCNTs, and to investigate the ballistic and diffusive components of the thermal resistance at the interface. It was found that the thermal conductivity of the composite PCMs increased with the diameter of the MWCNT ...

Author(s): ,

Filler geometry and interface resistance of carbon nanofibres: Key parameters in thermally conductive polymer composites

The effects of intrinsic thermal conductivity, carbon filler geometry, and interface thermal resistance on the effective thermal conductivity of polymer composites were investigated. It was found that the length of carbon fillers and the interface thermal resistance were the dominant factors in determining the effective thermal conductivity of the composites. The authors suggest that the most thermally conductive polymer composite would contain long carbon nanofibers that have undergone surface functionalization ...

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Thermal conductivity and adhesion properties of thermally conductive pressure-sensitive adhesives

Thermally conductive pressure-sensitive adhesives (TC-PSA) are used in electronic devices and industrial applications. This paper examined how particle size, shape, and the addition of a coupling agent (GSP) affected the thermal conductivity of TC-PSA. A thermophysical properties analyzer measured the thermal conductivity of the particle-filled polymer using the transient plane source (TPS) method. Results showed that the thermal conductivity of the particles increased with diameter and aspect ratio, and the ...

Author(s): , , ,

Thermal conductivity of AlN-ethanol nanofluids 

One way to increase the thermal conductivity of a conventional fluid is to add solid particles to the liquid. Aluminum nitride (AlN) is an effective thermal conductor so it is popularly used to fabricate nanofluids. In this study, 20 nanometer particles of AlN were distributed into ethanol and the thermal conductivity of the solution was measured using a thermal constant analyzer from 0.5 volume fraction (vol%) to 4.0 vol% at 273.15 kelvin (K) and 297.15 ...

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Measurement and model on thermal conductivities of carbon nanotube nanorefrigerants

The authors prepared a series of carbon nanotube (CNT) nanorefrigerants with varying size and amount of nanotubes to determine how these properties affect thermal conductivity. A TPS Instrument was used to measure thermal conductivity of the nanorefrigerants; R113 was used as a host nanorefrigerant. It was determined that higher concentrations of smaller diameter CNTs results in higher nanofrigerant thermal conductivity. A few theoretical models were also used to compare to ...

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