viscosity Archives - Thermtest Inc.

Recylced natural wastes in metakaolin based porous geopolymers for insulating applications

Author(s): Benoit Nait-Ali, C. Leonelli, D. Smith, E. Kamseu, S. Zekeng, U. C. Melo, Zénabou N. M. NGouloure

This article aims at assessing the impact of rice husk ash and volcanic ashes on the processing of porous inorganic polymers. The addition of volcanic ash or rice husk ash ...

Keywords: Hot Disk, Recycled, Rounded pores, Thermal Conductivity, thermal insulation, Transient plane source (TPS) method, viscosity

Thermal conductivity and rheology behavior of aqueous nanofluids containing alumina and carbon nanotubes

Author(s): Bengt Sunden, Lars Wadso, Zan Wu, Zhaozan Feng

Many conventional fluids have low thermal conductivities. Adding thermally conductive nanometer-sized particles to these fluids transforms them into thermally conductive nanofluids. In this study, the thermal conductivity of aqueous alumina ...

Keywords: Agglomeration, Carbon Nanotube, Carbon nanotubes, Hot Disk, Interfacial Thermal Resistance, Nanofluid, Thermal Conductivity, Transient Plane Source, viscosity

Rheology and Thermal Conductivity of Diamond Powder-Filled Liquid Epoxy Encapsulants for Electronic Packaging

Author(s): Jian H. Zhao, Kuang Sheng, Leonid Fursin, W. Roger Cannon, Xiangyang Hu, Xiaohui Wang, Yongxi Zhang

Diamond powders with various particle sizes were dispersed in an epoxy resin in an effort to increase its thermal conductivity. Dispersion of a mixture of particle sizes from 1 to 100 µm ...

Keywords: composites, Electronic Device Junction Temperature, electronic packaging, Epoxy, Hot Disk, resin, Thermal Conductivity, viscosity

Thermal contact resistance of epoxy composites incorporated with nano-copper particles and the multi-walled carbon nanotubes

Author(s): Ping Zhang, Qiang Li, YiMin Xuan

Raw multi-walled carbon nanotubes (r-MWCNTs) and Cu nanoparticles are dispersed in an epoxy matrix in varying quantities to create composite polymers with enhanced thermal conductivities. A study was then conducted ...

Keywords: Carbon nanotubes, CNTs, Copper, Environmental Scanning Electron Microscope, Environmental Scanning Electron Microscope (ESEM), Epoxy, ESEM, FE-SEM, Field Emission Scanning Electron Microscope, Field Emission Scanning Electron Microscope (FE-SEM), Hot Disk Thermal Constants Analyzer, Nanoparticles, Polymer composites, Thermal Conductivity, thermal contact resistance, thermal interface materials, TIMs, viscosity

Experimental Measurements of Thermophysical Properties of Al2O3– and TiO2–Ethylene Glycol Nanofluids

Author(s): Claudio Zilio, Giovanni A. Longo

The thermal conductivity and dynamic viscosity of Al2O3-ethylene glycol and TiO2-ethylene glycol nanofluids have been determined as a function of the nanoparticle volume fraction (from 1 to 3 %) and ...

Keywords: Cluster Size Distribution, DLS, Dynamic Light Scattering, Dynamic Light Scattering (DLS) Nano-Sizer Apparatus, Glycol, Nano-Sizer Apparatus, Nanofluids, Nanoparticles, TEM, Thermal Conductivity, transient plane source method, Transmission Electronic Microscope, Transmission Electronic Microscope (TEM), viscosity, Zeta Potential

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

Author(s): Ali A. Alemrajabi, Mamoun Muhammed, Muhammet S. Toprak, Nader Nikkam, Rahmatollah Khodabandeh, Sadegh Motahar

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 ...

Keywords: Nanoparticles, pcms, phase change materials, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, TEM, Thermal Conductivity, Thermal Constants Analyzer, Transmission electron microscopy, Transmission electron microscopy (TEM), viscosity

Graphite nanoplatelet/silicone composites for thermal interface applications

Author(s): A. V. K. Westwood, C. Stirling, M. A. Raza

Graphite nanoplatelets were dispersed in varying quantities into a silicone matrix to form composite materials with higher thermal conductivities than the pure silicone matrix without sacrificing mechanical properties. It was ...

Keywords: composites, Compression Testing, differential scanning calorimeter, Differential scanning calorimeter (DSC), DSC, Electrical Conductivity, FEG-SEM, Field Emission Gun Scanning Electron Microscope, Field Emission Gun Scanning Electron Microscope (FEG-SEM), graphite, Hot Disk Thermal Constants Analyser Method, Silicone, Thermal Conductivity, thermal interface materials, TIMs, viscosity

Experimental investigation on thermal and rheological properties of n-octadecane with dispersed TiO2 nanoparticles

Author(s): Ali A. Alemrajabi, Mamoun Muhammed, Muhammet S. Toprak, Nader Nikkam, Rahmatollah Khodabandeh, Sadegh Motahar

The thermal and rheological properties of n-octadecane, a phase change material, with dispersed TiO2 nanoparticles were investigated at varying temperatures. The properties were investigated in both the solid and liquid ...

Keywords: DLS, Dynamic Light Scattering, Dynamic Light Scattering (DLS), Hot Disk Thermal Constants Analyzer, Nanoparticles, pcms, phase change materials, Scanning Electron Microscopy, Scanning Electron Microscopy (SEM), SEM, Thermal Conductivity, TPS Theory, Transient Plane Source, Transient Plane Source (TPS) Theory, viscosity

Temperature Dependence of Thermophysical Properties of Disodium Hydrogenphosphate Dodecahydrate

Author(s): Masaaki Oya, Masakazu Yamazaki, Satoshi Hirano, Takeo S. Saitoh

Disodium hydrogenphosphate dodecahydrate was investigated for its thermophysical properties and the effects that temperature had on these properties. The goal of this work was to determine if this material was ...

Keywords: density, Hot Disk Transient Plane Source, pcms, phase change materials, Specific Heat, Thermal Conductivity, thermal energy storage, viscosity

Investigation on Thermal Conductivity, Viscosity and Stability of Nanofluids

Author(s): Mohammadreza Behi, Seyed Aliakbar Mirmohammadi

The thermal conductivity, viscosity, and stability of nanofluids were evaluated to determine how varying experimental conditions can affect these properties. It was determined that increasing the concentration, temperature, and time ...

Keywords: Nanofluids, Rotational Method, Sedimentation Balance Method, Stability, Thermal Conductivity, TPS Method, viscosity

Keyword: viscosity