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Recommended Papers for: Scanning Electron Microscopy (SEM)

Total Papers Found: 87

Evaluation of Morphological Effect on Thermal and  Mechanical Performance of PS/PMMA/CdS  Nanocomposite Systems

The thermal and mechanical properties of PS/PMMA immiscible polymer blends were investigated. The effects of the dispersion of CdS nanoparticles on these properties were also investigated. The dispersion of the nanoparticles was found to result in an increase in glass transition temperature, as well as the thermal conductivity. The PS matrix was found to become more brittle and the PMMA matrix was found to become more compact upon the ...

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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Percolation based enhancement in effective thermal conductivity of HDPE/LBSMO composites

La0.7Ba0.15Sr0.15MnO3 (LBSMO) powder was prepared and mixed with HDPE powder in volume fractions from 0 to 0.30. These powders were then molded into pellet form in a hot press and cooled to room temperature. The thermal conductivity of the resulting composite was then measured using the transient plane source method. It was found that the thermal conductivity of the composite samples increased with increasing LBSMO content up to an ...

Author(s): , ,

A novel phase change material containing mesoporous silica nanoparticles for thermal storage: A study on thermal conductivity and viscosity

A composite PCM was prepared from n-octadecane and mesoporous silica (MPSiO2) nanoparticles. The nanoparticles were added in quantities ranging from 1 wt. % to 5 wt. %, and the thermal conductivity of each composite sample was determined as a function of temperature. The most significant enhancement in thermal conductivity was observed in the sample containing 3 wt. % MPSiO2 nanoparticles. The viscosity of the composite samples was also investigated and it was found that at mass ...

Author(s): , , , , ,

Influence of Sliding Speed on the Tribological Characteristics of Si3N4-hBN Ceramic Materials

A disc of a composite ceramic material composed of silicon nitride (Si3N4) and 20% hBN was prepared and its tribological characteristics were investigated by sliding a Si3N4 pin across its surface at different sliding speeds. The friction coefficient and wear coefficient were determined for the composite using two different test modes: one in which the pin was kept stationary and the disc was rotated on top of the pin, ...

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