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Dissertations / Theses on the topic 'Thermal conductivity of polymers'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Freeman, J. J. "The thermal conductivity of amorphous polymers." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355947.

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2

Regan, Simon Edmund. "The low temperature thermal conductivity of polymers." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277153.

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3

Hardy, N. D. "The low temperature thermal conductivity of semi-crystalline polymers." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371443.

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4

Kashfipour, Marjan Alsadat. "Thermal Conductivity Enhancement Of Polymer Based Materials." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron156415885613422.

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5

Webber, Christina Marie. "Prosthetic Sockets: Assessment of Thermal Conductivity." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1404224355.

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6

Bahl, Kushal. "Study of Optimum Process Conditions for Production of Thermally Conductive Polymer Compounds Using Boron Nitride." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1290124133.

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7

Warner, Nathaniel A. "Investigation of the Effect of Particle Size and Particle Loading on Thermal Conductivity and Dielectric Strength of Thermoset Polymers." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849629/.

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Semiconductor die attach materials for high voltage, high reliability analog devices require high thermal conductivity and retention of dielectric strength. A comparative study of effective thermal conductivity and dielectric strength of selected thermoset/ceramic composites was conducted to determine the effect of ceramic particle size and ceramic particle loading on thermoset polymers. The polymer chosen for this study is bismaleimide, a common aerospace material chosen for its strength and thermal stability. The reinforcing material chosen for this study is a ceramic, hexagonal boron nitrid

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8

Baqar, Mohamed Saad. "Methylol-Functional Benzoxazines: Novel Precursors for Phenolic Thermoset Polymers and Nanocomposite Applications." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1373319624.

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9

Daon, Joffrey. "Matériaux d'Interface Thermique Nanostructurés." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLC082/document.

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Dans le domaine de la microélectronique de puissance, les progrès de miniaturisation ne cessent de s’accroître. En effet, le nombre de composants par unité de surface a suivie durant de nombreuses années la loi de Moore. Cette évolution implique une augmentation de la densité d’énergie à évacuer sous forme de chaleur, ce qui rend le contrôle de la température de fonctionnement difficile et a pour effet de diminuer la fiabilité des systèmes électroniques.C’est pourquoi, le management thermique des matériaux d’interface thermique est indispensable pour pérenniser le bon fonctionnement des dispos

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10

Mathis, Nancy Elaine. "Measurements of thermal conductivity anisotropy in polymer materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ62173.pdf.

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11

Adhikari, Amit. "Polymer Matrix Composite: Thermally Conductive GreasesPreparation and Characterization." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1556282222035491.

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12

Mehra, Nitin. "Thermal Conduction in Polymer Based Materials by Engineering Intermolecular Interactions." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1578202939238852.

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13

PRADHAN, NIHAR R. "Thermal Conductivity of Nanowires, Nanotubes and Polymer-Nanotube Composites." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-dissertations/112.

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Ever rising power densities and smaller transistor dimensions are increasing the challenge of thermal management within integrated-circuit chips and their surrounding packaging. In addition, the need for sustainable energy has placed urgent emphasis on energy conversion. Thermoelectric phenomena, involving the conversion of heat to electrical current, provide a central focus for both needs. Specifically, there is a need to engineer materials or composites with low thermal conductivity and high electrical conductivity for energy conversion and the opposite for heat management. In this presentat

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14

Al-Khudary, Nadine. "Material thermal conductivity measurement by the 3-omega method : application to polymers characterization using inkjet printing technology." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10135/document.

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Dans le domaine de l'électronique souple, les substrats flexibles à base de polymères sont de plus en plus utilisés. Si dans les prochaines années, les structures de propagation mises en œuvre sur ce type de substrat véhiculent une puissance, alors la connaissance de la conductivité thermique de ces matériaux est essentielle. Dans ce travail, nous mesurons la conductivité thermique de matériaux de type polymère en utilisant la méthode 3 omégas. Des mesures ont été effectuées sur du polydiméthylsiloxane (PDMS). Un procédé technologique particulier est utilisé pour la fabrication des échantillon

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15

Ma, Yunwei. "A Thermal Switch from Thermoresponsive Polymer Aqueous Solutions." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/86837.

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Thermal switch is very important in today’s world and it has varies of applications including heat dissipation and engine efficiency improving. The commercial thermal switch based on mechanical design is very slow and the structure is too complicated to make them smaller. To enable fast thermal switch as well as to make thermal switch more compact, I try to use second-order phase transition material to enable our thermal switch. Noticing the transition properties of thermoresponsive polymer for drug delivery, its potential in thermal switch can be expected. I used Poly(N-isopropylacrylamide) (

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16

Cao, Jinwei. "Phase Diagram Approach to Control of Ionic Conductivity and Electrochemical Stability of Solid Polymer Electrolyte Membrane for Li-ion Battery Application." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1398789082.

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17

Ismail, Iqbal M. I. "Electrochemical studies of polymer electrolytes." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242319.

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18

Isarn, Garcia Isaac. "New epoxy composites with enhanced thermal conductivity keeping electrical insulation." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/668084.

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La tendència creixent a la indústria electrònica de fer aparells cada vegada més petits, més lleugers i que treballin més ràpid provoca un augment de calor generat per efecte Joule, degut a l’augment de freqüència del pas d’electrons. Eliminar aquest excés de calor requereix la millora de la conductivitat tèrmica dels materials ja existents, ja que el mantenir la temperatura de treball d’aquests dispositius està directament relacionat amb l’eficiència, el temps de vida útil i la prevenció de fallades prematures dels equips. Alguns elements dels dispositius electrònics es recobreixen amb reïnes

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19

Santhosh, Balanand. "Thermal properties of polymer derived Si-O-C-N ceramics." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/267913.

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The main objective of the thesis is to study the thermal properties of Si-based polymer derived ceramics (PDCs) at elevated temperatures and to classify the main factors affecting the thermal transport through these ceramics. The polymer derived ceramics with the chemistry Si- O-C-N were prepared starting from commercial polycarbosilane, polysiloxane, and polysilazane precursors. These precursors are cross-linked at room temperature to obtain the preceramic, followed by controlled pyrolysis (at different temperatures ranging from 1200 oC to 1800 oC in argon, nitrogen or carbon-di-oxide atmosph

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20

Santhosh, Balanand. "Thermal properties of polymer derived Si-O-C-N ceramics." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/267913.

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The main objective of the thesis is to study the thermal properties of Si-based polymer derived ceramics (PDCs) at elevated temperatures and to classify the main factors affecting the thermal transport through these ceramics. The polymer derived ceramics with the chemistry Si- O-C-N were prepared starting from commercial polycarbosilane, polysiloxane, and polysilazane precursors. These precursors are cross-linked at room temperature to obtain the preceramic, followed by controlled pyrolysis (at different temperatures ranging from 1200 oC to 1800 oC in argon, nitrogen or carbon-di-oxide atmosph

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21

Berkowitz, Kyle Matthew. "Characterization and Analysis of Shape Memory Polymer Composites With Cellulose Nanocrystal Fillers." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396526722.

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22

Tipirneni, Raja Ram. "Characterization of thermal and electrical properties of fiber reinforced polymer (FRP) composites." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5932.

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Thesis (M.S.)--West Virginia University, 2008.<br>Title from document title page. Document formatted into pages; contains xii, 117 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 116-117).

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23

Dogan, Mehmet. "Effect Of Polymer Additives On The Physical Properties Of Bitumen Based Composites." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607531/index.pdf.

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Polymer modified bitumen is a binder obtained by the incorporation of various types of polymers in bitumen using mechanical mixing or chemical reactions. There are several factors affecting the properties of polymer modified bituminous composites such as<br>chemical composition of bitumen, kind of polymer and filler, compatibility of bitumen and polymer, amount of bitumen, polymer and filler, particle size of filler and process conditions. The main objective of this study is to determine the effects of polymer type and concentration on mechanical, thermal, properties and morphologies of bitume

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24

Rivière, Lisa. "Analyse des mécanismes de conduction thermique dans les composites structuraux PEEK/particules submicroniques d'argent." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30200/document.

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Ce travail s'inscrit dans la problématique de l'optimisation des transferts thermiques et électriques dans les composites à matrice polymère. Il a été démontré que l'introduction de particules conductrices dans une matrice isolante permet d'en augmenter la conductivité thermique. À l'échelle macroscopique, les mécanismes résistifs sont influencés par un jeu complexe de paramètres : nature des constituants, morphologie de la phase dispersée et interactions entre matrice et particules. L'influence de ces différents paramètres sur les propriétés thermiques de composites PEEK/particules d'argent s

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25

Safdari, Masoud. "A Computational and Experimental Study on the Electrical and Thermal Properties of Hybrid Nanocomposites based on Carbon Nanotubes and Graphite Nanoplatelets." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/49570.

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Carbon nanotubes (CNTs) and graphite nanoplatelets (GNPs) are carrying great promise as two important constituents of future multifunctional materials. Originating from their minimal defect confined nanostructure, exceptional thermal and electrical properties have been reported for these two allotropic forms of carbon. However, a brief survey of the literature reveals the fact that the incorporation of these species into a polymer matrix enhances its effective properties usually not to the degree predicted by the composite\\textquoteright s upper bound rule. To exploit their full potential, a

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26

Fu, Yao-Tsung. "Molecular Simulation of Dipsersion and Mechanical Stability of Organically Modified Layered Silicates in Polymer Matrices." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1296182515.

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27

Maruzhenko, Oleksii. "Structure, thermal and electrical properties of nanocomposites with hybrid fillers." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI131.

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Isolante. On a étudié les processus de formation d'une structure ségrégée, qui conduisait à la formation d'une distribution ordonnée de particules dans une matrice polymère. Il est montré que dans le système ségrégé, la valeur du seuil de percolation φc est d'un ordre de grandeur inférieur à celui d'un composite présentant une distribution aléatoire des charge (2,95% vol. pour le composite ségrégé contre 24,8% vol. pour le composite à distribution aléatoire). Le seuil de percolation dans le cas d'un mélange de charges est très inférieur à la valeur calculée à l'aide de la règle des mélanges. I

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28

Liang, Qizhen. "Preparation and properties of thermally/electrically conductive material architecture based on graphene and other nanomaterials." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44846.

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With excellent electrical, thermal and mechanical properties as well as large specific surface area, graphene has been applied in next-generation nano-electronics, gas sensors, transparent electrical conductors, thermally conductive materials, and superior energy capacitors etc. Convenient and productive preparation of graphene is thereby especially important and strongly desired for its manifold applications. Chemically developed functionalized graphene from graphene oxide (GO) has significantly high productivity and low cost, however, toxic chemical reduction agents (e.g. hydrazine hydrate)

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29

Mortazavi, Bohayra. "Multiscale modeling of thermal and mechanical properties of nanostructured materials and polymer nanocomposites." Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAD007/document.

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Les matériaux nanostructurés suscitent un intérêt qui va croissant en raison de leurs propriétés chimiques et physiquesexceptionnelles. A cause de la complexité et du coût des développements expérimentaux à l’échelle nano, la simulationnumérique devient une alternative de plus en plus populaire aux études expérimentales. Dans ce travail de thèse, nous avons essayé de combiner des simulations à l’échelle atomique avec de la modélisation en milieu continu pour évaluer la conductivité thermique et la réponse élastique de matériaux nanostructurés. Nous avons utilisé des simulations de dynamique mo

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30

Mortazavi, Bohayra, and Bohayra Mortazavi. "Multiscale modeling of thermal and mechanical properties of nanostructured materials and polymer nanocomposites." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-00961249.

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Nanostructured materials are gaining an ongoing demand because of their exceptional chemical and physical properties. Due to complexities and costs of experimental studies at nanoscale, computer simulations are getting more attractive asexperimental alternatives. In this PhD work, we tried to use combination of atomistic simulations and continuum modeling for the evaluation of thermal conductivity and elastic stiffness of nanostructured materials. We used molecular dynamics simulations to probe and investigate the thermal and mechanical response of materials at nanoscale. The finite element an

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31

Cerezo, Frances Therese, and francestherese_cerezo@hotmail com. "Thermal stability and mechanical property of polymer layered graphite oxide composites." RMIT University. Applied Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080627.161157.

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Polymer composites formed from layered fillers with high surface volume ratio show enhanced reinforcement. Graphite oxide is a high modulus material that can be separated into thin layers with high surface area. The aim of this study is to prepare polymer layered graphite oxide composites using functionalised polyolefin to enhance compatibility with various forms of layered graphite oxide in varying concentration. Functionalised polyolefins reinforced with layered graphite oxides and expanded graphite oxides were prepared using solution blending and melt blending methods. Three different mi

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32

Barzegar, Farshad. "Synthesis and characterization of Polymer/Graphene electrospun nanofibers." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/41188.

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Polymer nanofibers have attracted a lot of industrial interest in the past decade. In general, these fibers need to be thermally stable for many applications, such as in the aerospace industry. However, most of these polymer nanofibers suffer from low temperature degradation, limiting their use in many potential applications. Graphene, which is one sheet of graphite, has unique properties such as high conductivity, and high thermal stability. This exceptional material can be incorporated into the polymer nanofibers as nanofillers in order to enhance their thermal properties. The aim of

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33

Hoyt, Zachary. "Compostable Soy-Based Polyurethane Foam with Kenaf Core Modifiers." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862866/.

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Building waste and disposable packaging are a major component in today's landfills. Most of these are structural or thermally insulative polymer foams that do not degrade over a long period of time. Currently, there is a push to replace these foams with thermoplastic or biodegradable foams that can either be recycled or composted. We propose the use of compostable soy-based polyurethane foams (PU) with kenaf core modifiers that will offer the desired properties with the ability to choose responsible end-of-life decisions. The effect of fillers is a critical parameter in investigating the therm

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34

Cankaya, Burhan Fuat. "Foamed Eva-bitumen Blends And Composites." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610215/index.pdf.

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The thermal conductivities of foamed polymer based materials are much lower thermal conductivity values than unfoamed polymeric materials. Especially, thermal conductivity values of foamed polymers with closed-cell structure decreases to 0.03 W/m.K. The reinforcement of foamed polymeric materials by mixing with bitumen lowers the raw material cost. The main objective of this study is to make a new thermal insulation material with low thermal conductance. In this study, the effects of concentration of calcium carbonate as inorganic filler and the effects of cross-linking on the properties foam

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35

Burgos, Marmol Jose Javier. "Molecular simulation of polymer nanocomposites." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/molecular-simulation-of-polymer-nanocomposites(56a195bb-81ed-4eb8-81d7-b3357d7f2316).html.

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Polymer nanocomposites (PNCs) are hybrid materials incorporating organic or inorganic nanoparticles (NPs) with at least one dimension in the submicron scale. Over the last two decades, these materials have drawn a remarkable attention due to their central role in industrial formulations and technological applications, extending from food packaging to smart coatings. Incorporating nanoparticles (NPs) to a polymer matrix can significantly alter the conformation and the mobility of the polymer chains in their proximity. Moreover, understanding the delicate balance between the enthalpic and entrop

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36

Jousseaume, Vincent. "Etude comparative des proprietes de transport de polymeres conducteurs electroniques : melanges polyaniline - polystyrene." Nantes, 1998. http://www.theses.fr/1998NANT2074.

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La polyaniline (pani) et les melanges polyaniline - polymere isolant sont des materiaux prometteurs pour une utilisation dans la realisation de composants electroniques (transistors a effet de champ, diodes electroluminescentes) ou pour le blindage electromagnetique. Dans ce travail, nous avons prepare des melanges polyaniline - polystyrene (pani-pst) en utilisant la methode de codissolution qui consiste a melanger les deux polymeres en solution. Cette methode conduit a l'obtention d'echantillons ayant un tres faible seuil de percolation (<1%). L'etude physico-chimique des films de polyaniline

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37

Klittich, Mena R. "Surface Interactions with Hierarchical Nanostructures: From Gecko Adhesion to Thermal Behavior." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1499440265902425.

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38

Chen, PoYun. "Role of Ionic Liquid in Electroactive Polymer Electrolyte Membrane for Energy Harvesting and Storage." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1590688110146547.

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39

Du, Ling. "Highly Conductive Epoxy/Graphite Polymer Composite Bipolar Plates in Proton Exchange Membrane (PEM) Fuel Cells." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1202345378.

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40

Kaul, Pankaj B. "Thermal Transport in Tin-Capped Vertically Aligned Carbon Nanotube Composites for Thermal Energy Management." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1383515941.

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41

Seidel, Gary Don. "Micromechanics modeling of the multifunctional nature of carbon nanotube-polymer nanocomposites." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1881.

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42

Uddin, Md Salah. "Modeling of Hexagonal Boron Nitride Filled Bismalemide Polymer Composites for Thermal and Electrical Properties for Electronic Packaging." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc955120/.

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Due to the multi-tasking and miniaturization of electronic devices, faster heat transfer is required from the device to avoid the thermal failure. Die-attached polymer adhesives are used to bond the chips in electronic packaging. These adhesives have to hold strong mechanical, thermal, dielectric, and moisture resistant properties. As polymers are insulators, heat conductive particles are inserted in it to enhance the thermal flow with an attention that there would be no electrical conductivity as well as no reduction in dielectric strength. This thesis focuses on the characterization of polym

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43

Hernodh, Svantesson Isabelle. "Thermally insulating carbon foams from carbonized kraft lignin." Thesis, KTH, Fiber- och polymerteknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300749.

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Kolmaterial, såsom kolfibrer och kolskum, används som värmeisolatorer i applikationer vid höga temperaturer. För närvarande härleds dessa material från fossilbaserade källor, vilket tyder på ett behov av att hitta alternativa kandidater baserade på förnybara källor. Detta examensarbete undersökte möjligheten att använda kraftlignin som ett förnyelsebart startmaterial för framställning av kolskum med värmeisoleringsegenskaper. Två kraftligniner av barrträd med olika molekylvikter och ett kraftlignin av lövträd användes. De tre kraftligninerna karboniserades vid 1000°C efter att ha blandats i ol

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44

Jouni, Mohammad. "Nouvelles architectures de nano-systèmes polymères conducteurs à base de mélanges de nanocharges conductrices." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0148/document.

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Le domaine de nanocomposites polymères conducteurs a fait l’objet de nombreux travaux et recherches, vu que ces matériaux présentent un fort potentiel pour de nombreuses applications concernant différents secteurs. Toutefois, malgré les progrès et les résultats obtenus pour l’instant, les performances de ce type des matériaux restent insuffisantes pour certaines applications qui peuvent requérir l’association de diverses propriétés (électriques, thermiques, blindage électromagnétique…). Dans cette thèse, on détaille l’élaboration et la caractérisation de nanocomposites polymères conducteurs. D

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45

Kim, Mu Seong. "Design, Synthesis, Processing, and Thermal Analysis of Nanocomposites with Tunable Properties." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4099.

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Polymer composites containing nanosized fillers have generated explosive interest since the early 1980's. Many recent studies have been conducted incorporating nano-fillers into polymer matrices to design and synthesize materials with tunable mechanical, thermal, and optical properties. Conventional filled polymers, where the reinforcement is on the order of microns, have been replaced by composites with discrete nanosized fillers. Gradually, theories that predicted that composite properties are independent of particle size in the micron range were challenged by nanocomposites. Rather, nanocom

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46

COLONNA, SAMUELE. "Thermally conductive polymer/graphene-related materials nanocomposites prepared by melt reactive processing." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2674992.

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Polymer nanocomposites containing graphene-related materials attracted a wide research interest thanks to the combination of the processability, lightweight and corrosion resistance typical of polymers, with the outstanding properties of graphene-related materials, including mechanical properties, thermal conductivity and electrical conductivity. Nanocomposites exploiting graphene-related materials are indeed showing interesting properties and several industrial applications for such nanomaterials are currently being developed, including structural materials, as well as functional materials, e

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47

Hicks, David Cyprian. "Aligned Continuous Cylindrical Pores Derived from Electrospun Polymer Fibers in Titanium Diboride." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/99423.

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The use of electrospun polystyrene (PS) fibers to create continuous long range ordered multi-scale porous structures in titanium diboride (TiB2) is investigated in this work. The introduction of electrospun PS fibers as a sacrificial filler into a colloidal suspension of TiB2 allows for easy control over the pore size, porosity, and long range ordering of the porous structures of the sintered ceramic. Green bodies were formed by vacuum infiltrating an electrospun-fiber-filled mold with the colloidal TiB2 suspension. The size, volume, distribution, and dispersion of the pores were optimized by

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48

Tavman, Ismail H. "Contribution a l'etude de l'anisotropie thermique des polymeres en fonction de leur orientation moleculaire." Paris, ENSAM, 1987. http://www.theses.fr/1987ENAM0014.

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Modelisation de la phase de remplissage et de celle de maintien en pression dans un cycle d'injection de matieres thermoplastiques. Etude de l'influence de l'orientation moleculaire sur la diffusivite et la conductivite thermique

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Brachna, Róbert. "Stanovení anizotropie tepelné vodivosti polymerních chladičů pro chlazení elektroniky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445460.

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Abstract:

The master's thesis focuses on creating a numerical model of a polymeric heat sink with emphasis on its significant thermal conductivity anisotropy. This anisotropy is caused by highly thermally conductive graphite filler. Its final orientation is given by the melt flow inside the mould cavity during injection molding. The numerical model is created on the basis of a heat sink prototype subjected to experimental measurements, whose physical conditions are reliably replicated by the model. The determination of anisotropy is divided into two parts. The qualitative part is based on the fracture a

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Jabbour, Joseph. "Matériaux organiques pour la fabrication d'échangeurs pour des systèmes énergétiques éco-efficients : élaboration et modélisation." Thesis, Ecole nationale supérieure Mines-Télécom Lille Douai, 2019. http://www.theses.fr/2019MTLD0001.

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Abstract:

L’originalité de cette étude consiste dans l’analyse et la fabrication d’échangeurs de chaleur munis d’extensions de surface (ailettes) à base de polymères chargés, compacts et à hautes performances. Ce projet pluridisciplinaire se compose d’une étude numérique et expérimentale du comportement thermomécanique des matériaux (polymères chargés) et s’intéresse à l’analyse numérique et expérimentale des échangeurs de chaleur à tube-ailette en polymère. En effet, il vise principalement au : (i) développement de systèmes polymères chargés à conductivité thermique améliorée. (ii) L’étude de nouvelles

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