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Relevant bibliographies by topics / Lewis-nielsen model

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Academic literature on the topic 'Lewis-nielsen model'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Lewis-nielsen model"

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Song, Heeseok, Byoung Kim, Yong Kim, Youn-Sang Bae, Jooheon Kim, and Youngjae Yoo. "Synergistic Effects of Various Ceramic Fillers on Thermally Conductive Polyimide Composite Films and Their Model Predictions." Polymers 11, no. 3 (2019): 484. http://dx.doi.org/10.3390/polym11030484.

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In this study, thermally conductive composite films were fabricated using an anisotropic boron nitride (BN) and hybrid filler system mixed with spherical aluminum nitride (AlN) or aluminum oxide (Al2O3) particles in a polyimide matrix. The hybrid system yielded a decrease in the through-plane thermal conductivity, however an increase in the in-plane thermal conductivity of the BN composite, resulting from the horizontal alignment and anisotropy of BN. The behavior of the in-plane thermal conductivity was theoretically treated using the Lewis–Nielsen and modified Lewis–Nielsen theoretical predi

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Pal, Rajinder. "On the Lewis–Nielsen model for thermal/electrical conductivity of composites." Composites Part A: Applied Science and Manufacturing 39, no. 5 (2008): 718–26. http://dx.doi.org/10.1016/j.compositesa.2008.02.008.

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Rafiq, Sikander, Adulhalim Shah Maulud, Zakaria Man, and Nawshad Muhammad. "Gas Permeation Models in Mixed Matrix Membranes for Gas Separation." Advanced Materials Research 917 (June 2014): 317–24. http://dx.doi.org/10.4028/www.scientific.net/amr.917.317.

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Various theoretical models on CO2 permeation were discussed that included Maxwell model, Bruggeman model, Lewis-Nielson model and Pal model. These models were used for comparing the relative permeance of CO2 with the previously published experimental data on silica nanoparticles filled polysulfone/polyimide (PSF/PI) mixed matrix membranes (MMMs). The results showed that the deviation was in the increasing order: Lewis-Nielsen model< Maxwell model< Pal model< Bruggeman model. All these models assumed that the fillers are spherical in shape. A scanning electron microscope (SEM) cross-se

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Kostagiannakopoulou, C., E. Fiamegkou, G. Sotiriadis, and V. Kostopoulos. "Thermal Conductivity of Carbon Nanoreinforced Epoxy Composites." Journal of Nanomaterials 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/1847325.

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The present study attempts to investigate the influence of multiwalled carbon nanotubes (MWCNTs) and graphite nanoplatelets (GNPs) on thermal conductivity (TC) of nanoreinforced polymers and nanomodified carbon fiber epoxy composites (CFRPs). Loading levels from 1 to 3% wt. of MWCNTs and from 1 to 15% wt. of GNPs were used. The results indicate that TC of nanofilled epoxy composites increased with the increase of GNP content. Quantitatively, 176% and 48% increase of TC were achieved in nanoreinforced polymers and nanomodified CFRPs, respectively, with the addition of 15% wt. GNPs into the epox

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Czyzewski, Jan, Andrzej Rybak, Karolina Gaska, Robert Sekula, and Czeslaw Kapusta. "Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers." Materials 13, no. 23 (2020): 5480. http://dx.doi.org/10.3390/ma13235480.

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An effective model to calculate thermal conductivity of polymer composites using core-shell fillers is presented, wherein a core material of filler grains is covered by a layer of a high-thermal-conductivity (HTC) material. Such fillers can provide a significant increase of the composite thermal conductivity by an addition of a small amount of the HTC material. The model employs the Lewis-Nielsen formula describing filled systems. The effective thermal conductivity of the core-shell filler grains is calculated using the Russel model for porous materials. Modelling results are compared with rec

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Cao, Yue, Daming Zhang, Yue Yang, et al. "Dispersed-Monolayer Graphene-Doped Polymer/Silica Hybrid Mach-Zehnder interferometer (MZI) Thermal Optical Switch with Low-Power Consumption and Fast Response." Polymers 11, no. 11 (2019): 1898. http://dx.doi.org/10.3390/polym11111898.

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This article demonstrates a dispersed-monolayer graphene-doped polymer/silica hybrid Mach–Zehnder interferometer (MZI) thermal optical switch with low-power consumption and fast response. The polymer/silica hybrid MZI structure reduces the power consumption of the device as a result of the large thermal optical coefficient of the polymer material. To further decrease the response time of the thermal optical switch device, a polymethyl methacrylate, doped with monolayer graphene as a cladding material, has been synthesized. Our study theoretically analyzed the thermal conductivity of composites

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Pech-May, NW, C. Vales-Pinzon, A. Vega-Flick, et al. "Heat transport in epoxy and polyester carbonyl iron microcomposites: The effect of concentration and temperature." Journal of Composite Materials 52, no. 10 (2017): 1331–38. http://dx.doi.org/10.1177/0021998317723694.

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Temperature dependence of the thermal diffusivity in composites of epoxy and polyester resins, loaded with carbonyl iron particles, has been studied using the photopyroelectric technique. Increments of eight and 2.5 times the thermal conductivity of the polymers are obtained, as the volume concentration of microparticles is increased from 0% to 40% for epoxy and from 0% to 20% for polyester matrices, respectively. Additionally, the thermal diffusivity falls systematically as the temperature is increased from 270 to 400 K; the effect is more pronounced for high concentration of microparticles i

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Rybak, Aurelia, Aleksandra Rybak, and Petr Sysel. "Modeling of Gas Permeation through Mixed-Matrix Membranes Using Novel Computer Application MOT." Applied Sciences 8, no. 7 (2018): 1166. http://dx.doi.org/10.3390/app8071166.

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The following article proposes a modern computer application MOT (Membrane Optimization Tool) for modeling of gas transport processes through mixed-matrix membranes (MMMs). The current version of the application is based on the Maxwell model, which can be successfully used to model gas transport through the simplest types of hybrid membranes without any defects. The application has been verified on the example of four types of hybrid membranes, consisting of various types of polymer matrix, such as: poly (vinyl acetate), 2, 2′-BAPB + BPADA, Ultem, hyperbranched polyimide (ODPA-MTA) and zeolite

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Pai, Fang-Cheng, Hou-Hsein Chu, and Sun-Mou Lai. "Preparation and properties of thermally conductive PLA/PA 610 biomass composites." Journal of Elastomers & Plastics 52, no. 1 (2019): 53–69. http://dx.doi.org/10.1177/0095244318825286.

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Thermally conductive biomass composites were prepared using poly(lactic acid) (PLA)/polyamide 610 (PA 610) blends as the matrix and a hexagonal boron nitride (BN) as the thermally conductive filler via a melt-blending process. The experimental results showed that BN was dispersed in the blends as the flake type morphology. Tg (glass transition temperature) and Tm (melting temperature) of both PLA and PA 610 remained unchanged, but the thermal degradation temperature increased up to 30°C with the addition of 50 phr BN in the blends. The tensile strength and tensile modulus increased with the in

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Rahim, Abdur, Abdalrhman Milad, Nur Izzi Md Yusoff, Gordon Airey, and Nick Thom. "Stiffening Effect of Fillers Based on Rheology and Micromechanics Models." Applied Sciences 11, no. 14 (2021): 6521. http://dx.doi.org/10.3390/app11146521.

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The aggregate in an asphalt mixture is coated with mastic consisting of bitumen (dilute phase) and filler (particulates phase). The interaction of bitumen and filler and packing of filler plays an important role in the properties of mastics. The micromechanics models from composite rheology can be used to predict the stiffening effect of a suspension. In this research, the stiffening effect of fillers was investigated based on the rheology of mastic. The frequency sweep tests in a dynamic shear rheometer at different temperatures were performed within a linear viscoelastic range to construct t

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Dissertations / Theses on the topic "Lewis-nielsen model"

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Mhike, Washington. "Surface resistivity, mechanical and thermal properties of rotationally moulded polyethylene/graphite composites." Diss., 2012. http://hdl.handle.net/2263/29905.

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Conference papers on the topic "Lewis-nielsen model"

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Kochetov, R., A. V. Korobko, T. Andritsch, P. H. F. Morshuis, S. J. Picken, and J. J. Smit. "Three-phase lewis-nielsen model for the thermal conductivity of polymer nanocomposites." In 2011 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP 2011). IEEE, 2011. http://dx.doi.org/10.1109/ceidp.2011.6232665.

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Sonsalla, Tyler J., Leland Weiss, Arden Moore, Adarsh Radadia, Debbie Wood, and Davis Bailey. "Zinc Composites With Enhanced Thermal Conductivity for Use in Fused Deposition Modeling Systems." In ASME 2017 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ht2017-5062.

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Waste heat is a major energy loss in manufacturing facilities. Thermally conductive polymer composite heat exchangers could be utilized in the ultralow temperature range (below 200° C) for waste heat recovery. Fused deposition modeling (FDM), also known as three-dimensional (3-D) printing, has become an increasingly popular technology and presents one approach to fabrication of these exchangers. The primary challenge to the use of FDM is the low-conductivity of the materials themselves. This paper presents a study of a new polymer-Zn composite designed for enhanced thermal conductivity for usa

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