morphology Archives - Thermtest Inc.

In-situ synthesis and attachment of colloidal ZnO nanoparticles inside porous carbon structures

Author(s): Adrian Mihail Motoc, Alain Celzard, Elena Palomo del Barrio, Ioan Albert Tudor, Mirela Petriceanu, Prasanta Jana, Radu Robert Piticescu, Vanessa Fierro, Viorel Badilita

This study investigates the properties of a material to be used as an energy storage medium that can use energy stored from the summer months, and then release it during ...

Keywords: Carbon Foams, chemical synthesis, decomposition of urea, Differential scanning calorimetry (DSC), hydrothermal impregnation process, hydrothermal synthesis process, interface interactions, morphology, Nanoparticles, nanostructures, pcms, phase change materials, Scanning Electron Microscopy (SEM), sugar alcohols, Temperature, Thermal Conductivity, thermal energy storage, Transient plane source (TPS), Transient plane source (TPS) method, Zeta Potential, Zinc Carbonate Hydroxide Hydrate (ZCHH), zinc hydroxide (ZnOH), zinc oxide (ZnO)

Experimental study on the effective thermal conductivity of methane hydrate-bearing sand

Author(s): DeQing Liang, DongLiang Li

Hydrate bearing sediments, found in permafrost, have great potential as a future energy source. Therefore, the thermal properties need to be determined to design drilling and gas extraction processes. The ...

Keywords: gas rich environments, hydrate saturation level, hydrate-bearing sand, methane, methane hydrates, morphology, sedimentary, Temperature, Thermal Conductivity, Transient plane source (TPS) method, Transient plane source (TPS) technique, transient properties testing, water saturation, wave speed studies

Fabrication of highly porous silica thermal insulators prepared by gelation-freezing route

Author(s): Manabu Fukushima, Yu-ichi Yoshizawa

The purpose of this study was to produce high porosity silica thermal insulators through gelation-freezing. The thermal conductivities of the insulators in relation to porosity and microstructure were measured by ...

Keywords: Freeze-drying, Gelation, Microstructure, morphology, porosity, Porous, Silica, Silica insulators, Thermal Conductivity, thermal insulation, Transient plane source (TPS) method

Evaluation of energy band gap, thermal conductivity, phase transition temperature and elastic response of PS/CdS semiconducting optical nanocomposite

Author(s): K. B. Sharma, Kananbala Sharma, Kuldeep S. Rathore, Vishal Mathur

Cadmium sulfide (CdS) nanoparticles were dispersed in a polystyrene (PS) matrix to synthesize semiconducting optical nanocomposites for industrial applications. In this paper, many characteristics of the PS-CdS thick films were ...

Keywords: Cadmium sulfide (CdS), Cadmium sulphide (CdS), Energy band gap, Fillers, films, matrix, morphology, nanocomposites, Nanofiller, Optical absorption, Phase transition, Polystyrene (PS), Scanning Electron Microscopy (SEM), Semiconducting, Temperature, Thermal Conductivity, Transient plane source (TPS), Transient plane source (TPS) method, Transmission electron microscopy (TEM), X-ray Diffraction

Preparation and characterization of ultralow density silica aerogels by acetonitrile supercritical drying

Author(s): Bin Zhou, Guang Wu Liu, Qiu Jie Yu, Xing Yuan Ni

In this study, ultralow density silica aerogels were synthesized and their thermal conductivities were tested to determine how supercritical drying affected the samples. A Hot-Disk TPS2500 measured the thermal conductivity ...

Keywords: Acetonitrile solvent extraction, Aerogels, density, morphology, pcms, phase change materials, Scanning electron microscope (SEM), Silica, Sol-gel process, Supercritical Drying, Surface Area, Tetramethyl orthosilicate (TMOS), Thermal Conductivity, thermal insulation, thermal transport properties, Transient plane source (TPS), Transient plane source (TPS) method

Preparation and characterization of stearic acid/olive pomace powder composite as form-stable phase change material

Author(s): Dihia Djefel, Gilles Lefebvre, Laurent Royon, Said Makhlouf, Souad Khedache

The fatty acid stearic acid has been widely studied for its use in thermal energy storage applications as a phase change material (PCM). Stearic acid shows promise for this application ...

Keywords: Chemical Structure, differential scanning calorimetry, Differential scanning calorimetry (DSC), DSC, Environmental Scanning Electron Microscope, Environmental Scanning Electron Microscope (ESEM), ESEM, Fourier Transform Infrared (FT-IR), Fourier-Transform Infrared, FT-IR, graphite, morphology, pcms, phase change materials, Thermal Conductivity, thermal energy storage, Thermal Performances, thermal stability, Thermogravimetric Analysis

Thermal conductive PS/graphite composites

Author(s): H. Tu, L. Ye

Polystyrene (PS)/graphite thermal conductive nano-composites were prepared to verify the high thermal conductivity values with the addition of graphite, as well as the layered structure. The thermal conductivity of ...

Keywords: composites, graphite, intercalation methods, layer exfoliation, morphology, nano-composites, nano-dispersion, pan milling intercalation, polystyrene, Polystyrene (PS), PS, rolling intercalation, solvent intercalation, Thermal Conductivity

Keyword: morphology

In-situ synthesis and attachment of colloidal ZnO nanoparticles inside porous carbon structures

Experimental study on the effective thermal conductivity of methane hydrate-bearing sand

Fabrication of highly porous silica thermal insulators prepared by gelation-freezing route

Evaluation of energy band gap, thermal conductivity, phase transition temperature and elastic response of PS/CdS semiconducting optical nanocomposite

Preparation and characterization of ultralow density silica aerogels by acetonitrile supercritical drying

Preparation and characterization of stearic acid/olive pomace powder composite as form-stable phase change material

Thermal conductive PS/graphite composites

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