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Journal articles on the topic 'Nanocomposite thermal conductivity'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Ouis, Nora, Assia Belarbi, Salima Mesli, and Nassira Benharrats. "Improvement of Electrical Conductivity and Thermal Stability of Polyaniline-Maghnite Nanocomposites." Chemistry & Chemical Technology 17, no. 1 (2023): 118–25. http://dx.doi.org/10.23939/chcht17.01.118.

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A new nanocomposite based on conducting polyaniline (PANI) and Algerian montmorillonite clay dubbed Maghnite is proposed to combine conducting and thermal properties (Mag). The PANI-Mag nanocompo-sites samples were made by in situ polymerization with CTABr (cetyl trimethyl ammonium bromide) as the clay galleries' organomodifier. In terms of the PANI-Mag ratio, the electrical and thermal properties of the obtained nanocomposites are investigated. As the amount of Maghnite in the nanocomposite increases, thermal stability improves noticeably, as measured by thermal gravimetric analysis. The elec

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Sabo, Y. T., D. E. A. Boryo, I. Y. Chindo, and A. M. Auwal. "Nanocomposites transformed from polystyrene waste/antimony, barium and nickel oxides nanoparticles with improved thermal and electrical properties." Nigerian Journal of Chemical Research 26, no. 2 (2022): 117–27. http://dx.doi.org/10.4314/njcr.v26i2.7.

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In this experiment, the oxide nanoparticles were synthesized via chemical precipitation and the nanocomposites were produced using in situ polymerization method with varying nanoparticles contents ranged from 0.1 g to 1.0 g for electrical conductivity and from 0.05 g to 0.25 g for thermal conductivity. The electrical and thermal conductivities of nanocomposites were investigated and compared with the values obtained for untreated polystyrene. It was observed that the electrical and thermal properties were higher for the nanocomposites and increase with increasing nanoparticle concentrations in

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3

Jang, Ji-un, Hae Eun Nam, Soon Oh So, et al. "Thermal Percolation Behavior in Thermal Conductivity of Polymer Nanocomposite with Lateral Size of Graphene Nanoplatelet." Polymers 14, no. 2 (2022): 323. http://dx.doi.org/10.3390/polym14020323.

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In this study, the thermal percolation behavior for the thermal conductivity of nanocomposites according to the lateral size of graphene nanoplatelets (GNPs) was studied. When the amount of GNPs reached the critical concentration, a rapid increase in thermal conductivity and thermal percolation behavior of the nanocomposites were induced by the GNP network. Interestingly, as the size of GNPs increased, higher thermal conductivity and a lower percolation threshold were observed. The in-plane thermal conductivity of the nanocomposite containing 30 wt.% M25 GNP (the largest size) was 8.094 W/m·K,

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4

Tijjani, Y. "High temperature applications of carbon nanotubes (CNTs) [v]: thermal conductivity of CNTs reinforced silica nanocomposite." Bayero Journal of Pure and Applied Sciences 15, no. 1 (2022): 136–40. http://dx.doi.org/10.4314/bajopas.v15i1.19.

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Consolidated functionalized carbon nanotubes/silica refractory ceramic nanocomposites (FCNTs/silica) were fabricated by pressureless sintering technique. Thermal conductivity of the nanocomposites with various amounts of carbon nanotubes (0, 1, and 4 wt.%) were investigated. The thermal conductivity increases with temperature, 1 wt. % FCNTs/silica nanocomposite gave the highest thermal conductivity. Therefore, it can be concluded that the carbon nanotubes (CNTs) are promising reinforcement for improving thermal conductivity of the silica refractory ceramics.

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Keklikcioğlu Çakmak, Neşe. "Experimental study on the thermal conductivity of a water-based ternary hybrid nanofluid incorporating MWCNTs-COOH-Fe3O4-rGO." European Mechanical Science 9, no. 1 (2025): 16–24. https://doi.org/10.26701/ems.1591623.

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This study explores the thermal conductivity characteristics of ternary nanofluids composed of water-based Fe3O4-decorated carboxylated multi-walled carbon nanotubes (MWCNT-COOH), reduced graphene oxide (rGO), and Fe3O4-CNT-COOH/rGO nanocomposites. The investigation focuses on the influence of temperature and nanocomposite concentration. Ultrasonic probes were employed to ensure the stability of the nanofluid, and its structural properties were analyzed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD), and Fourier-transform in

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Ribezzo, Alessandro, Matteo Fasano, Luca Bergamasco, Luigi Mongibello, and Eliodoro Chiavazzo. "Multi-Scale Numerical Modelling for Predicting Thermo-Physical Properties of Phase-Change Nanocomposites for Cooling Energy Storage." Tecnica Italiana-Italian Journal of Engineering Science 65, no. 2-4 (2021): 201–4. http://dx.doi.org/10.18280/ti-ijes.652-409.

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One major limitation of phase-change materials (PCM) for thermal energy storage comes from their poor thermal conductivity hindering heat transfer process and power density. Nanocomposites PCMs, where highly conductive nanofillers are dispersed into PCM matrices, have been exploited in the past decades as novel latent heat storage materials with enhanced thermal conductivity. A computational model based on continuum simulations capable to link microscopic characteristics of nanofillers and the bulk PCM with the macroscopic effective thermal conductivity of the resulting nanocomposite is the ai

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Moheimani, Reza, and M. Hasansade. "A closed-form model for estimating the effective thermal conductivities of carbon nanotube–polymer nanocomposites." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 8 (2018): 2909–19. http://dx.doi.org/10.1177/0954406218797967.

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This paper describes a closed-form unit cell micromechanical model for estimating the effective thermal conductivities of unidirectional carbon nanotube reinforced polymer nanocomposites. The model incorporates the typically observed misalignment and curvature of carbon nanotubes into the polymer nanocomposites. Also, the interfacial thermal resistance between the carbon nanotube and the polymer matrix is considered in the nanocomposite simulation. The micromechanics model is seen to produce reasonable agreement with available experimental data for the effective thermal conductivities of polym

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Singh, Manohar, and Jeewan Chandra Pandey. "Probing thermal conductivity of interphase in epoxy alumina nanocomposites." Polymers and Polymer Composites 30 (January 2022): 096739112210774. http://dx.doi.org/10.1177/09673911221077489.

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The objective of this research is to determine the thermal conductivity of the interphase in epoxy alumina nanocomposites. First, TPS 500 measures the thermal conductivity of epoxy alumina nanocomposite samples. Following that, a numerical model based on the finite element method was developed to estimate the effective thermal conductivity of epoxy alumina nanocomposites over a range of assumed interphase thermal conductivity values. Finally, an algorithm is devised to extract the interphase’s thermal conductivity by combining simulation and experiment results. Interphase was found to have sig

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9

Han, Bai, Jinghui Dai, Wanliang Zhao, Wei Song, Zhi Sun, and Xuan Wang. "Preparation and Space Charge Properties of Functionalized Zeolite/Crosslinked Polyethylene Composites with High Thermal Conductivity." Polymers 15, no. 22 (2023): 4363. http://dx.doi.org/10.3390/polym15224363.

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Nanocomposite doping is an effective method to improve the dielectric properties of polyethylene. Meanwhile, the introduction of thermal conductivity groups in crosslinked polyethylene (XLPE) is also an effective way to improve the thermal conductivity. Nano-zeolite is an inorganic material with a porous structure that can be doped into polyethylene to improve the insulation performance. In this paper, hyperbranched polyarylamide (HBP) with a high thermal conductivity and an auxiliary crosslinking agent (TAIC) was grafted on the surface of ZSM-5 nano-zeolite successively to obtain functionaliz

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Fialko, Nataliia, Roman Dinzhos, Julii Sherenkovskii, et al. "Influence on the thermophysical properties of nanocomposites of the duration of mixing of components in the polymer melt." Eastern-European Journal of Enterprise Technologies 2, no. 5 (116) (2022): 25–30. http://dx.doi.org/10.15587/1729-4061.2022.255830.

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A set of experimental studies has been carried out to establish the effect of the mixing time of components of nanocomposite materials on their thermal conductivity, specific heat, and density. The physical properties of polypropylene-carbon nanotube composites were to be studied. During the experiments, the duration of mixing of the components in the melt of the polymer varied from 5 to 52 minutes, the mass fraction of the filler ‒ in the range of 0.3...10 %, and nanocomposite temperature – from 290 K to 475 K. It was found that an increase in the mixing time of components of nanocomposite ma

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Nataliia, Fialko, Dinzhos Roman, Sherenkovskii Julii, et al. "Influence on the thermophysical properties of nanocomposites of the duration of mixing of components in the polymer melt." Eastern-European Journal of Enterprise Technologies 2, no. 5 (116) (2022): 25–30. https://doi.org/10.15587/1729-4061.2022.255830.

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A set of experimental studies has been carried out to establish the effect of the mixing time of components of nanocomposite materials on their thermal conductivity, specific heat, and density. The physical properties of polypropylene-carbon nanotube composites were to be studied. During the experiments, the duration of mixing of the components in the melt of the polymer varied from 5 to 52 minutes, the mass fraction of the filler ‒ in the range of 0.3...10 %, and nanocomposite temperature – from 290 K to 475 K. It was found that an increase in the mixing time of components of

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12

Kianfar, Armin, Mir Masoud Seyyed Fakhrabadi, and Mahmoud Mosavi Mashhadi. "Prediction of mechanical and thermal properties of polymer nanocomposites reinforced by coiled carbon nanotubes for possible application as impact absorbent." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 4 (2019): 882–902. http://dx.doi.org/10.1177/0954406219885969.

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This paper presents three-dimensional finite element modeling of nanocomposite materials made from polyethylene polymer reinforced by coiled carbon nanotubes. A method of Python scripting was used to generate representative volume elements in order to determine the mechanical behavior in elastic and plastic zones as well as effective thermal conductivity using the finite element software. The properties of the nanocomposites are investigated by considering the interphase zone between carbon nanofillers and matrix. The effects of different volume fractions, geometrical parameters, and orientati

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13

Pattanshetti, Virappa Virupaxappa, G. M. Shashidhara, and Mysore Guruswamy Veena. "Dielectric and thermal properties of magnesium oxide/poly(aryl ether ketone) nanocomposites." Science and Engineering of Composite Materials 25, no. 5 (2018): 915–25. http://dx.doi.org/10.1515/secm-2016-0273.

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AbstractIn the present study, dielectric and thermal properties of poly(aryl ether ketone) (PAEK)-nanocomposites with varying weight percentage of magnesium oxide (MgO) have been reported. The thermal properties of PAEK/MgO nanocomposites were studied using differential scanning calorimetry, thermogravimetric analysis, thermo-mechanical analysis and thermal conductivity. Transmission electron microscopy of the developed nanocomposites shows agglomerate-free dispersion of MgO nanoparticles in PAEK matrix. From the dielectric properties, dielectric constant of 13 was achieved for 10 wt% PAEK/MgO

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14

Tarawneh, Mou’ad A., and Sahrim Haji Ahmad. "The Effect of Ultrasonic Treatment and Gamma Radiation on the Thermal Conductivity of TPNR Hybrid Nanocomposites." Advanced Materials Research 626 (December 2012): 29–33. http://dx.doi.org/10.4028/www.scientific.net/amr.626.29.

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This paper discusses the effect of Gamma radiation and ultrasonic treatment time on hybrid nanofillers nanoclay and multi-walled carbon nanotubes (MWCNTs) as reinforcing agents to improve the thermal conductivity of TPNR. The laser flash technique was also employed to determine the thermal conductivity of the hybrid nanocomposite. The thermal conductivity of hybrid nanocomposites that were sintered at 30 to 150 °C did not show a monotonous change with MWCNTs as the filler has a high thermal conductivity compared to nanoclay by using different dose of gamma radiation or with different time of u

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15

Kusunose, Takafumi, Tohru Sekino, Yoichi Ando, and Koichi Niihara. "Fabrication of machinable AlN–BN composites with high thermal conductivity by pressureless sintering turbostatic BN-coated AlN nanocomposite powders." Journal of Materials Research 23, no. 1 (2008): 236–44. http://dx.doi.org/10.1557/jmr.2008.0022.

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To impart machinability to hard and brittle AlN ceramics without losing their high thermal conductivity, a homogeneous dispersion of fine BN particles in an AlN matrix was investigated. A homogeneous dispersion of BN particles was obtained by pressureless sintering of turbostatic BN-coated AlN nanocomposite powder (AlN–BN nanocomposite powder), which was prepared by reducing and heating AlN particles containing a mixture of boric acid, urea, and carbon. Though AlN is slightly oxidized by boric acid during the reduction, the addition of carbon reduced the oxygen content of the AlN–BN composite

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16

Akbarzadeh, Mohammad, Hassan Ebadi-Dehaghani, and Meisam Sadeghi. "Validity of Several Thermal Conductivity Models in Metal Oxide Nanoparticles Filled Polycarbonate." Advanced Materials Research 739 (August 2013): 51–56. http://dx.doi.org/10.4028/www.scientific.net/amr.739.51.

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The thermal conductivity (TC) of compression moulded polycarbonate (PC) and PC filled with 2.5-5% iron oxide (α-Fe2O3), cupric oxide (CuO) or magnesium oxide (MgO) nanoparticles, prepared by extrusion, was studied using a thermal conductivity analyser (TCA). The effect of type and content of nanoparticles on the thermal conductivity was investigated. The experimental TC values of the PC nanocomposites showed an increase with an increase in the level of nanoparticles concentration. The TC improvement in PC/CuO nanocomposite was greater than that of other nanocomposites. Several models were used

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17

Purwandari, Vivi, and Malemta Tarigan. "PREPARASI FILM NANOKOMPOSIT POLIVINIL ALKOHOL (PVA)/NANOKARBON DARI CANGKANG BUAH SAWIT (NCCS) DENGAN METODE PENCAMPURAN LARUTAN." JURNAL KIMIA SAINTEK DAN PENDIDIKAN 6, no. 1 (2022): 11–16. http://dx.doi.org/10.51544/kimia.v6i1.2977.

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Polyvinyl alcohol (PVA) has good compatibility when added as filler in the form of nanocarbon so that it can produce environmentally friendly nanocomposite products. Thus, the addition of nanocomposites to PVA-based films is expected to increase and improve the mechanical properties of the resulting PVA films. This study aims to utilize palm fruit shells as raw materials for nanocarbons and as fillers for nanocomposites, as well as to determine the mechanical properties and thermal strength of nanocarbon nanofibers in the PVA matrix. Composite films were made using the solution mixing method.

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18

Purwandari, Vivi, Saharman Gea, Basuki Wirjosentono, Agus Haryono, I. Putu Mahendra, and Yasir Arafat Hutapea. "Electrical and Thermal Conductivity of Cyclic Natural Rubber/Graphene Nanocomposite Prepared by Solution Mixing Technique." Indonesian Journal of Chemistry 20, no. 4 (2020): 801. http://dx.doi.org/10.22146/ijc.44791.

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Thermal and electrical conductivity studies of Cyclic Natural Rubber nanocomposite with graphene 1 and 2 phr (G1 and G2) and modified 1 and 2 graphenes (mG1 and mG2) have been carried out. Graphene was activated with cetrimonium bromide (CTAB), was isolated from Sawahlunto coal (Bb) by the Hummer modification method. The nanocomposite was fabricated through the mixing solution method using Xylena as a solvent. The characterizations of nanocomposites which were performed by Fourier Transform Infrared (FT-IR) and X-Ray Diffraction (XRD) reveals an interaction between graphene, CTAB and the CNR m

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19

Reji Kumar Rajamony, Mahendran Samykano, A.K. Pandey, et al. "Investigation on Thermophysical Properties of Multi-Walled Carbon Nanotubes Enhanced Salt Hydrate Phase Change Material." International Journal of Automotive and Mechanical Engineering 20, no. 3 (2023): 10595–605. http://dx.doi.org/10.15282/ijame.20.3.2023.03.0817.

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Thermal Energy Storage (TES) is a valuable tool for improving the energy efficiency of renewable energy conversion systems. One of the most effective methods for harnessing thermal energy from solar sources is through energy storage using phase change materials (PCMs). However, the thermal performance of PCMs is hindered by their low thermal conductivity. This research focuses on enhancing the thermal performance of salt hydrate PCM using multi-walled carbon nanotubes (MWCNTs) and surfactants. Through experimental investigations, a salt hydrate PCM with varying concentrations of MWCNTs (rangin

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20

Zhang, Chong, Chaofeng Zhao, Huize Cui, et al. "Molecular Dynamics Study on Thermal Conductivity Properties and Dielectric Behaviors of Graphene-Based Epoxy Resin Nanocomposites." Polymers 17, no. 1 (2025): 112. https://doi.org/10.3390/polym17010112.

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In order to increase the thermal conductivity of neat epoxy resin and broaden its practical application in high-voltage insulation systems, we have constructed four kinds of epoxy resin nanocomposite models (a neat epoxy resin (EP), a graphene-doped epoxy resin nanocomposite (EP/GR) and hydroxyl- or carboxyl-functionalized graphene-doped epoxy resin nanocomposites (EP/GR-OH or EP/GR-COOH)) to systematically investigate their thermodynamic and electrical properties using molecular dynamics (MD) simulations. Compared with the EP model, carboxyl-functionalized graphene particles enhanced the ther

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21

Yin, Biao, Yanwei Wen, Hongbing Jia, Jingyi Wang, Zhaodong Xu, and Lifeng Ding. "Synergistic effects of hybridization of carbon black and carbon nanotubes on the mechanical properties and thermal conductivity of a rubber blend system." Journal of Polymer Engineering 37, no. 8 (2017): 785–94. http://dx.doi.org/10.1515/polyeng-2016-0375.

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Abstract The effects of hybridization of multi-walled carbon nanotubes (MWCNTs) with carbon black (CB) and the structure-property relationships of nanocomposites based on hydrogenated nitrile-butadiene rubber/hydrogenated carboxylated nitrile-butadiene rubber blends were extensively studied. MWCNTs used in this work were modified through acid treatment to improve the dispersion of MWCNTs in the rubber matrix and the surface interaction between MWCNTs and matrix. Synergistic interaction between CB and MWCNTs increased the tensile modulus and tear strength of nanocomposites. The effect of MWCNTs

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22

Afolabi, Lukmon Owolabi, Hussain Hamoud Al-Kayiem, Aklilu Tesfamichael Baheta, and Saw Chun Lin. "Experimental Investigation of Thermal Conductivity of Paraffin Based Nanocomposite for TES." Applied Mechanics and Materials 465-466 (December 2013): 181–85. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.181.

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To maximize and improve utilization of solar collector system, there is need to integrate the system with thermal energy storage (TES), this will increase the over all efficiency of the system and provide continuous supply of energy day and night. The performance of the TES depends on its thermal conductivity and this can be enhanced by introducing nanoparticles. Thus, this paper focus on the thermal conductivity enhancement of Cu and Fe nanoparticles dispersed in paraffin based suspension was investigated experimentally for utilization in solar collector integrated with TES. The enhanced ther

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23

Ioannou, Ioanna, Panagiotis S. Ioannou, Theodora Kyratsi, and John Giapintzakis. "Effect of Starting Powder Particle Size on the Thermoelectric Properties of Hot-Pressed Bi0.3Sb1.7Te3 Alloys." Materials 17, no. 2 (2024): 318. http://dx.doi.org/10.3390/ma17020318.

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P-type Bi0.3Sb1.7Te3 polycrystalline pellets were fabricated using different methods: melting and mechanical alloying, followed by hot-press sintering. The effect of starting powder particle size on the thermoelectric properties was investigated in samples prepared using powders of different particle sizes (with micro- and/or nano-scale dimensions). A peak ZT (350 K) of ~1.13 was recorded for hot-pressed samples prepared from mechanical alloyed powder. Moreover, hot-pressed samples prepared from ≤45 μm powder exhibited similar ZT (~1.1). These high ZT values are attributed both to the presence

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24

Stanciu, Nicoleta-Violeta, Felicia Stan, Ionut-Laurentiu Sandu, Catalin Fetecau, and Adriana-Madalina Turcanu. "Thermal, Rheological, Mechanical, and Electrical Properties of Polypropylene/Multi-Walled Carbon Nanotube Nanocomposites." Polymers 13, no. 2 (2021): 187. http://dx.doi.org/10.3390/polym13020187.

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In this paper, nanocomposites based on polypropylene (PP) filled with up to 5 wt.% of multi-walled carbon nanotubes (MWCNTs) were investigated for determining the material property data used in numerical simulation of manufacturing processes such as the injection molding and extrusion. PP/MWCNT nanocomposite pellets were characterized for rheological behavior, crystallinity, specific volume and thermal conductivity, while injection-molded samples were characterized for mechanical and electrical properties. The addition of MWCNTs does not significantly change the melting and crystallization beh

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Kuan, Chen-Feng, Chin-Lung Chiang, Su-Hsia Lin, Wei-Guo Huang, Wen-Yen Hsieh, and Ming-Yuan Shen. "Characterization and Properties of Graphene Nanoplatelets/XNBR Nanocomposites." Polymers and Polymer Composites 26, no. 1 (2018): 59–68. http://dx.doi.org/10.1177/096739111802600107.

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Graphene nanoplatelets (GNPs) are two-dimensional carbon structure materials with single or multilayers graphite plane which possesses attractive characteristics including high electrical conductivity, high modulus, high strength, high thermal conductivity and high specific surface area. In this study, the GNPs were modified by maleic anhydride (MA) and vinyltrimethoxysilane (VTMOS), and then reinforced carboxy NBR (XNBR) to prepare GNPs/nitrile rubber (XNBR) nanocomposites. The modified GNPs were characterized by Fourier Transform Infrared Spectrometry (FT-IR), Raman spectroscopy. The propert

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Kusunose, Takafumi, and Tohru Sekino. "Non-Oxide Ceramic Nanocomposites with Multifunctionality." Key Engineering Materials 403 (December 2008): 45–48. http://dx.doi.org/10.4028/www.scientific.net/kem.403.45.

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Two types of Aluminum nitride (AlN) based ceramic nanocomposite with multifunctionality were investigated to improve machinability or electrical conductivity of AlN ceramics with high thermal conductivity. The AlN/BN nanocomposite was fabricated by hot-pressing AlN-BN composite powder, which was prepared by reducing and heating AlN particles containing a mixture of boric acid, urea and carbon. The nanocomposite containing 20 vol.% BN showed high strength, good machinability and relatively high thermal conductivity. On the other hand, the sintered AlN ceramics with CeO2 as an additive indicated

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Razonado, Ivy Ann C., Emee Grace T. Suarnaba, Lawrence V. Madriaga, and Leslie Joy L. Diaz. "Thermal Conductivity Enhancement in Polymer-Clay Nanocomposite Using Casting Techniques." Materials Science Forum 995 (June 2020): 15–20. http://dx.doi.org/10.4028/www.scientific.net/msf.995.15.

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Nowadays, there is a need for efficiency and miniaturization in electronic products. However, in the chip level, heat dissipation can limit the performance of these gadgets. Semiconductor industries addressed this thermal management challenge by using thermal interface material. Previous studies have shown that polymer-clay nanocomposite has an enhanced thermal conductivity which can be used as a thermal interface material. In this study, the aim was to determine the effect of casting techniques on the microstructure and thermal conductivity of the polymer-clay nanocomposites. Solution interca

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Silva, Sofia, José M. Barbosa, João D. Sousa, Maria C. Paiva, and Paulo F. Teixeira. "High-Performance PEEK/MWCNT Nanocomposites: Combining Enhanced Electrical Conductivity and Nanotube Dispersion." Polymers 16, no. 5 (2024): 583. http://dx.doi.org/10.3390/polym16050583.

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High-performance engineering thermoplastics offer lightweight and excellent mechanical performance in a wide temperature range. Their composites with carbon nanotubes are expected to enhance mechanical performance, while providing thermal and electrical conductivity. These are interesting attributes that may endow additional functionalities to the nanocomposites. The present work investigates the optimal conditions to prepare polyether ether ketone (PEEK)/multi-walled carbon nanotube (MWCNT) nanocomposites, minimizing the MWCNT agglomerate size while maximizing the nanocomposite electrical con

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Rouhi, S., R. Ansari, and M. Ahmadi. "Finite element investigation into the thermal conductivity of carbon nanotube/aluminum nanocomposites." Modern Physics Letters B 31, no. 06 (2017): 1750053. http://dx.doi.org/10.1142/s0217984917500531.

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This paper aims to study the thermal conductivity coefficient of aluminum matrices reinforced by single-walled carbon nanotubes. To obtain the thermal conductivity coefficient of the nanocomposites, a small temperature difference is applied on two opposite edges of a representative volume element. The nanotubes are distributed in Al matrix by using three different patterns, including random pattern, regular pattern with nanotube direction along the temperature difference and regular pattern with nanotube direction perpendicular to the temperature change. It is shown that the best enhancement i

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Кульбачинский, В. А., В. Г. Кытин, Д. А. Зиновьев та ін. "Термоэлектрические свойства нанокомпозитов Sb-=SUB=-2-=/SUB=-Te-=SUB=-3-=/SUB=- c графитом". Физика и техника полупроводников 53, № 5 (2019): 645. http://dx.doi.org/10.21883/ftp.2019.05.47555.13.

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AbstractAntimony-telluride-based nanocomposite samples containing different weight fractions of graphite (Sb_2Te_3 + x % graphite, where x = 0.0, 0.5, 1.0, and 2.5%) are synthesized and studied. The samples are produced by a solid-state reaction with the use of a ball mill. X-ray diffraction measurements show that the Sb_2Te_3 phase is present in the nanocomposites. All of the diffraction peaks are identified as corresponding to the rhombohedral structure of symmetry $$R\bar {3}m$$ . No additional peaks related to graphite are observed because of its low content. Moreover, the X-ray data show

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Yang, Mei Jun, Wei Jun Luo, Qiang Shen, Hong Yi Jiang, and Lian Meng Zhang. "Preparation and Thermoelectric Properties of Bi-Doped Mg₂Si Nanocomposites." Advanced Materials Research 66 (April 2009): 17–20. http://dx.doi.org/10.4028/www.scientific.net/amr.66.17.

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Nanocomposites and heavy doping both are regarded as effective way to improve materials’ thermoelectric properties. 0.7at% Bi-doped Mg2Si nanocomposites were prepared by spark plasma sintering. Results of thermoelectric properties tests show that the doping of Bi atom effectively improves the electrical conductivity of Mg2Si，and the nanocomposite structures are helpful to reduce thermal conductivity and increase Seebeck coefficient, hence improving the thermoelectric performance. A maximum dimensionless figure of merit of 0.8 is obtained for the Bi-doped Mg2Si nanocomposite with 50 wt % nanopo

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Wang, Tai-Yuan, Po-Ying Tseng, and Jia-Lin Tsai. "Characterization of Young’s modulus and thermal conductivity of graphene/epoxy nanocomposites." Journal of Composite Materials 53, no. 6 (2018): 835–47. http://dx.doi.org/10.1177/0021998318791681.

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Atomistic simulation together with micromechanical analysis was employed to characterize the Young’s modulus and thermal conductivity of graphene/epoxy nanocomposites. Nanocomposites containing pristine graphene, carboxyl (COOH)-functionalized graphene, and COOH- and amine (NH2)-functionalized graphene were considered in the simulations. The effect of atomistic interaction between the graphene and the surrounding epoxy was accounted for in the molecular dynamics simulations and then used to derive the effective properties of graphene. Subsequently, the Young’s modulus and thermal conductivity

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Zhou, Yongcun, Shihu Yu, Huan Niu, and Feng Liu. "Synergistic Improvement in Thermal Conductivity of Polyimide Nanocomposite Films Using Boron Nitride Coated Copper Nanoparticles and Nanowires." Polymers 10, no. 12 (2018): 1412. http://dx.doi.org/10.3390/polym10121412.

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Electronic devices are increasingly dense, underscoring the need for effective thermal management. A polyimide (PI) matrix nanocomposite film combining boron nitride (BN)-coated copper nanoparticles (CuNPs@BN) and nanowires (CuNWs@BN) was fabricated by a flexible and fast technique for enhanced thermal conductivity and the dielectric properties of nanocomposite films. The thermal conductivity of (CuNPs-CuNWs)@BN/PI composite comprising 10 wt % filler loading rose to 4.32 W/mK, indicating a nearly 24.1-fold increase relative to the value obtained for pure PI matrix. The relative permittivity an

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Nataliia, Fialko, Dinzhos Roman, Sherenkovskii Julii, et al. "Establishing patterns in the effect of temperature regime when manufacturing nanocomposites on their heat-conducting properties." Eastern-European Journal of Enterprise Technologies 4, no. 5 (112) (2021): 21–26. https://doi.org/10.15587/1729-4061.2021.236915.

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This paper reports the experimental study carried out to establish the dependence of the thermal conductivity of polypropylene-based nanocomposites filled with carbon nanotubes on the main parameter of the temperature regime of their manufacturing ‒ the level of overheating a polymer melt relative to its melting point. The study has been conducted for nanocomposites that were manufactured by applying a method based on the mixing of components in the polymer melt applying a special disk extruder. During the composite manufacturing process, the level of melt overheating varied from 10 to 75&nbsp

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Tarawneh, Mou’ad A., Adilah Mat Ali, Sahrim Hj Ahmad, and L. J. Yu. "Influence of multiwalled carbon nanotubes content on thermal conductivity of polyactic acid/liquid natural rubber nanocomposite." World Journal of Engineering 13, no. 1 (2016): 1–5. http://dx.doi.org/10.1108/wje-02-2016-005.

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Purpose The purpose of this paper is to study the effects of multi-walled carbon nanotubes (MWCNTs) loading on the thermal conductivity of nanocomposites. Design/methodology/approach In this paper, the polymer nanocomposite of MWCNT nanoparticles incorporated with PLA and LNR as compatibilizer were prepared via melt blending method. Findings The result has shown that the sample with 3.5 wt.% of MWCNT content provided higher thermal conductivity which is believed to be the optimum loading that formed the suitable percolated network for phonon conduction facilitation because of better dispersion

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Panda, Shivkumari, Dibakar Behera, and Tapan Kumar Bastia. "Graphite/UPE Nanocomposite: Transport, Thermal, Mechanical and Viscoelastic Properties." Diffusion Foundations 23 (August 2019): 201–12. http://dx.doi.org/10.4028/www.scientific.net/df.23.201.

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This chapter presents the preparation and characterization of some unique properties of nanocomposites by dispersing graphite flakes in commercial unsaturated polyester (UPE) matrix. The composite was prepared by a novel method with the use of solvent swelling technique. Three different specimens of UPE/graphite nanocomposites were fabricated with addition of 1, 2 and 3 wt% of graphite flakes. Except mechanical, viscoelastic and thermo gravimetric properties, transport properties like electrical conductivity, thermal conductivity and water transport properties were studied for the first time.

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Lule, Zelalem, and Jooheon Kim. "Surface Modification of Aluminum Nitride to Fabricate Thermally Conductive poly(Butylene Succinate) Nanocomposite." Polymers 11, no. 1 (2019): 148. http://dx.doi.org/10.3390/polym11010148.

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Biodegradable polymers and their composites are considered promising materials for replacing conventional polymer plastics in various engineering fields. In this study, poly(butylene succinate) (PBS) composites filled with 5% aluminum nitride nanoparticles were successfully fabricated. The aluminum nitride nanoparticles were surface-modified to improve their interaction with the PBS matrix. Field-emission scanning electron microscopy revealed that the nanocomposites with surface-modified nanoparticles had better interface interaction and dispersion in the polymer matrix than those with untreat

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Wu, Zi Hua, Hua Qing Xie, and Qing Feng Zeng. "Synthesis and Thermal Characterization of Co-Doped ZnO Nanocomposites Prepared by Sol-Gel Method." Advanced Materials Research 512-515 (May 2012): 1753–56. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1753.

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Polyparaphenylene/Zn0.925Co0.075O(PPP/Zn0.925Co0.075O) nanocomposites were synthesized by using a sol-gel method and their thermal conductivity properties were measured. The XRD pattern of Zn0.925Co0.075O shows the single phase wurtzite structure. The SEM images show that the lighter-contrast area is PPP and the dark-contrast area is the polycrystalline of Zn0.925Co0.075O. The increase in the band edge is a clear indication for the incorporation of Co inside the ZnO lattice. The observation of three additional absorption peaks provided evidence that the 3d7 high-spin configuration of Co2+ unde

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Nikonkov, R. V., P. Stachowiak, A. Jeżowski, and A. I. Krivchikov. "Thermal conductivity of argon-SiO2cryocrystal nanocomposite." Low Temperature Physics 42, no. 4 (2016): 313–16. http://dx.doi.org/10.1063/1.4947308.

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Behdinan, Kamran, Rasool Moradi-Dastjerdi, Babak Safaei, Zhaoye Qin, Fulei Chu, and David Hui. "Graphene and CNT impact on heat transfer response of nanocomposite cylinders." Nanotechnology Reviews 9, no. 1 (2020): 41–52. http://dx.doi.org/10.1515/ntrev-2020-0004.

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AbstractReinforcing polymers with nanofillers is an advanced approach to improve and manage the thermal behaviors of polymeric nanocomposite materials. Among the proposed nanofillers, graphene and carbon nanotube (CNT) with superior thermal conductivity are two advanced nanofillers, which have extensively been utilized to enhance the heat transfer responses of host polymeric materials. In this work, the impacts of randomly oriented graphene and CNT to steady state and transient heat transfer behaviors of functionally graded (FG) nanocomposite cylinders have been investigated using an axisymmet

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Zhang, Yu, Kaichang Kou, Tiezheng Ji, et al. "Preparation of Ionic Liquid-Coated Graphene Nanosheets/PTFE Nanocomposite for Stretchable, Flexible Conductor via a Pre-Stretch Processing." Nanomaterials 10, no. 1 (2019): 40. http://dx.doi.org/10.3390/nano10010040.

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The various volume concentrations of ionic liquid-modified graphene nanosheets filled polytetrafluoroethylene nanocomposites (IL-GNs/PTFE) for flexible conductors were fabricated via a pre-stretch processing method after cold-press sintering. The results indicated that pre-stretching has no significant weakening in the electrical conductivity of the nanocomposites, while the Young’s modulus greatly reduced by 62.5%, which is more suitable for flexible conductors. This may be because the reduced conductivity by the destructive conductive pathway cancels out the enhanced conductivity by the incr

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Al Sawafi, Suaad, and Mo Song. "Polymer/carbon nanotube nanocomposites as temperature sensing materials." Polymers and Polymer Composites 31 (April 2, 2023): 096739112311666. http://dx.doi.org/10.1177/09673911231166631.

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Multi-walled carbon nanotubes and high-density polyethylene (MWCNTs/HDPE) nanocomposite sheets with (1.0, 0.5, and 0.1) wt.% MWCNT were successfully prepared by coating the MWCNTs on the surface of the matrix particles (HDPE). The sample resistivities of the nanocomposites were investigated in relation to the temperature influence. Several findings could be drawn from these experiments: For instance, among all of the prepared MWCNT/HDPE nanocomposite sheets with (0.1, 0.5, and 1.0) wt. % MWCNT, the electrical resistivity of the 1.0 wt. % MWCNT/HDPE nanocomposite was 33.18 kΩ.m, demonstrating t

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Haddadi, Manel, Boudjemaa Agoudjil, and Abderrahim Boudenne. "Thermal Conductivity of Polymer/Carbon Nanotube Composites." Materials Science Forum 714 (March 2012): 99–113. http://dx.doi.org/10.4028/www.scientific.net/msf.714.99.

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As one of the most important field of current nanoscience, the polymer nanocomposites is a promising and efficient way for new generation materials with high performances and multifunctionalities. The incorporating of nanofillers in a polymer matrix may improve mechanical, thermal, electrical or dielectric properties of the composites. The current paper focuses on the thermal conductivity of polymer/carbon nanotube composites. These last, are considered to be ideal candidates for the development of nanocomposite materials. Clarifying the role of the factors, influencing the properties of the c

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Srivastava, G. P., and Iorwerth O. Thomas. "Tunable Thermal Transport Characteristics of Nanocomposites." Nanomaterials 10, no. 4 (2020): 673. http://dx.doi.org/10.3390/nano10040673.

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We present a study of tunable thermal transport characteristics of nanocomposites by employing a combination of a full-scale semi-ab inito approach and a generalised and extended modification of the effective medium theory. Investigations are made for planar superlattices (PSLs) and nanodot superlattices (NDSLs) constructed from isotropic conductivity covalent materials Si and Ge, and NDSLs constructed from anisotropic conductivity covalent-van der Waals materials MoS 2 and WS 2 . It is found that difference in the conductivities of individual materials, period size, volume fraction of inserti

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Liu, Tian, Weston Wood, Bin Li, Brooks Lively, and Wei-Hong Zhong. "Electrical and dielectric sensitivities to thermal processes in carbon nanofiber/high-density polyethylene composites." Science and Engineering of Composite Materials 18, no. 1-2 (2011): 51–60. http://dx.doi.org/10.1515/secm.2011.007.

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AbstractOwing to the huge interface region existing in a polymer nanocomposite, the effects of thermal processes on properties of nanocomposites are much more complicated than in a pure polymer. It is therefore important to determine the effects of thermal processes on nanocomposites with different interfacial interactions between the nanofillers and the polymer matrix. It is also important to explore the performance changes for nanocomposites under elevated temperatures over pure polymers. In this investigation, we examined the correlation of thermal treatment with dielectric properties of ca

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Gonçalves, Jordana, Patrícia Lima, Beate Krause, et al. "Electrically Conductive Polyetheretherketone Nanocomposite Filaments: From Production to Fused Deposition Modeling." Polymers 10, no. 8 (2018): 925. http://dx.doi.org/10.3390/polym10080925.

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The present work reports the production and characterization of polyetheretherketone (PEEK) nanocomposite filaments incorporating carbon nanotubes (CNT) and graphite nanoplates (GnP), electrically conductive and suitable for fused deposition modeling (FDM) processing. The nanocomposites were manufactured by melt mixing and those presenting electrical conductivity near 10 S/m were selected for the production of filaments for FDM. The extruded filaments were characterized for mechanical and thermal conductivity, polymer crystallinity, thermal relaxation, nanoparticle dispersion, thermoelectric e

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Potensa, Bruno Santos, Grazieli Olinda Martins, Silvania Lanfredi, and Marcos Augusto Lima Nobre. "New Additive Type Amorphous-Carbon/Zn Modifier of the Thermal Conductivity of Alcohol Fuel." Materials Science Forum 820 (June 2015): 384–89. http://dx.doi.org/10.4028/www.scientific.net/msf.820.384.

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A functional inorganic-additive modifier of the thermal conductivity of biofuel type alcohol anhydrous was developed based on an amorphous carbon nanocomposite containing dispersed zinc. Dispersion and modification of thermal conductivity in biofuels type anydrous alcohol were considered, as well as in petro-diesel and a blend of biodiesel and petro-diesel. Fuels, alcohol, diesel and biodiesel acted as a continuous medium dispersing the particles of C/Zn. Both thermal conductivity and thermal resistivity measurements were carried out showing that the amorphous nanocomposite particles C/Zn act

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Duc, Huynh Mai, Dat Nguyen Huu, Trung Tran Huu, et al. "The Effect of Multiwalled Carbon Nanotubes on the Thermal Conductivity and Cellular Size of Polyurethane Foam." Advances in Polymer Technology 2021 (January 6, 2021): 1–8. http://dx.doi.org/10.1155/2021/6634545.

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Polyurethane (PU) foam is known as the popular material for the applications in many fields of industry and life. To improve the mechanical and thermal properties of this material, in this research, PU foam was reinforced with aniline-modified multiwalled carbon nanotubes (MWCNTs). Fourier transform infrared FTIR spectrum of modified MWCNTs showed the aniline was grafted on the surface of MWCNTs through the appearance of –NH2 stretches. The effect of MWCNTs with and without modification on the density, porosity, compressive strength, and heat conductivity of PU/MWCNT foam nanocomposites was in

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Zandi, F., M. Rezaei, and A. Kasiri. "Effect of Nanoclay on the Physical-Mechanical and Thermal Properties and Microstructure of Extruded Noncross-Linked LDPE Nanocomposite Foams." Key Engineering Materials 471-472 (February 2011): 751–56. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.751.

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Novel noncross-linked low density polyethylene (LDPE) foams were produced by extrusion process. In this study the effects of Organophilic Montmorillonite (OMMT) nanoclay (DK1) on thermal conductivity, flame retardancy, morphological and mechanical properties of LDPE foams have been investigated. Nanoclay dispersion in LDPE foam structure was examined by X-ray diffraction (XRD), microstructure was observed by an optical microscope and analyzed by Bel View image analyzer, thermal conductivity was studied by a simple transient method, mechanical properties was investigated using a tensile-compres

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Barai, Divya, Sohan Parbat, and Bharat Bhanvase. "Synthesis and thermal conductivity of functionalized biocarbon-Fe₃O₄ nanocomposite-based green nanofluid for heat transfer applications." E3S Web of Conferences 321 (2021): 01003. http://dx.doi.org/10.1051/e3sconf/202132101003.

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Bio-based graphitic carbon was synthesized in this work by one-step carbonization of bamboo waste at low temperature. This bio-based carbon was then functionalized in order to decorated it with Fe3O4 nanoparticles. The functionalized biocarbon-Fe3O4 (f-biocarbon-Fe3O4) nanocomposite was synthesized using ultrasound-assisted coprecipitation method which was then confirmed by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffractometry. Water-based nanofluid was prepared using the synthesized f-biocarbon-Fe3O4 nanocomposite particles. Thermal conductivity of th

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