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Dissertations / Theses on the topic 'Polymer insulation'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Adhikari, Dipasree. "Analysis of partial discharge activity in void defects in polymer insulation." Thesis, Glasgow Caledonian University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627718.

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Polymers used as electrical insulators in high voltage (RV) plant are subjected to inherent design and fault level stresses during service. As a result of these stresses the materials degrade and deteriorate, reducing equipment life and lowering reliability of power systems. Defects in polymeric insulators will result in partial discharge (PD) activity, potentially leading to plant failure. PD is both a symptom of a fault in insulation and the source of various stress mechanisms, that cause further material degradation. It is important to understand correlations between PD signal parameters, d

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2

Wallström, Stina. "Biofilms on silicone rubber for outdoor high voltage insulation." Doctoral thesis, KTH, Fiber- och polymerteknik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171.

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Silicone rubber high voltage insulators are sometimes colonised by microorganisms which form a biofilm on the surface of the infected unit. In this work insulators exposed to the outdoor environment in Sweden, Sri Lanka and Tanzania respectively have been studied. The biofilms colonising the insulators were shown to be of roughly the same composition regardless of their origin. Algae in association with bacteria dominated the biofilms and provided nutrition to mold growth. The isolated microorganisms were further used to study the effect of a biofilm on different silicone rubber materials. New

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3

Kim, Taehwan. "Preventing Thermal Degradation of Pvc Insulation by Mixtures of Cross-Linking Agents and Antioxidants." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157547/.

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Poly(vinyl chloride)(PVC) wire and cable insulation has poor thermal stability, causing the plasticizer to separate from the PVC chain and produce an oily residue, lowering the tensile elongation at break and thus increasing brittleness. We have added 4 wt.% of three different types of cross-linking agents and antioxidants, as well as mixtures of both, to improve the thermal stability of the plasticizer and tensile properties of PVC after thermal exposure. We performed tensile tests, tribological tests, profilometry, scanning electron microscopy(SEM) and water absorption determination before a

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4

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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5

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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6

Gawryla, Matthew Daniel. "Low Density Materials through Freeze-Drying:Clay Aerogels and Beyond…" Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1247013426.

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7

Elbuzedi, Mohamed. "Material study and properties of polymers used in composite high voltage insulators." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/17749.

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Thesis (MSc)--University of Stellenbosch, 2007.<br>ENGLISH ABSTRACT: Silicone rubber, particularly poly(dimethylsiloxane) (PDMS), has been increasingly used in the manufacture of outdoor high voltage insulators in the recent years. PDMS offers several advantages that make it suitable for outdoor use, such as low weight, a hydrophobic surface, stability, and excellent performance in heavily polluted environments. PDMS surfaces can, however, become progressively hydrophilic due to surface oxidation caused by corona discharge, UV radiation and acid rain. In this study, PDMS samples of contr

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8

Randall, Jason P. "Tailoring Structure Property Relationships and Elastic Phenomenon in Native and Polymer Reinforced Silica Aerogels." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1279308913.

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9

Zhao, Weijia. "Partial discharge ageing of polymer insulation under combined AC and DC stress at elevated temperatures." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28507.

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Cable termination is the weakest part in any HV underground cable system, as defects may be left in the main insulation during the installation process. In HVDC systems, the converters produce the intended DC voltage for transmission but there may also be AC harmonics superimposed. The frequency of the AC harmonics could be in kHz range. The superimposed harmonics on the HVDC may have synergistic effects on cable insulation and may lead to further degradation in the cable insulation. In addition, for the sake of environmental protection, XLPE is no longer the suitable choice for underground ca

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10

Arroyo-Andrade, Flavio, Pebelyh Coral-Rodriguez, Jhonatan Cabel-Pozo, and Jose Alvarez. "Improvement of the polymer insulation production process using lean manufacturing tools and plant layout design." Springer, 2021. http://hdl.handle.net/10757/656032.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>This study focuses on problems of inadequate production capacity management. The factors that generate this scenario are related to the incorrect distribution of work areas, the absence of standardization of the production process and unorganized workstations in the production line. The application of 5S’s tool, Value Stream Mapping (VSM) and a proposal for plant design are presented to solve the problem. After the application of the design sol

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11

Shinko, Andrew. "Structure and Morphology Control in Polymer Aerogels with Low Crosslink Density." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1430399529.

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12

Guffond, Raphaël. "Characterization and modeling of microstructure evolution of cable insulation system under high continuous electric field." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS039/document.

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Le sujet de cette thèse porte sur la compréhension et la modélisation du comportement électrique de système d'isolation soumis à un fort champ électrique continu. Les propriétés électriques du polymère sont directement pilotées par ses hétérogénéités chimiques et physiques présentes à plusieurs échelles. Dans cette étude, un nouveau modèle est développé ayant pour but de simuler l'évolution de la microstructure de polymère avec la température, le champ électrique et le temps et de simuler l'impact de cette évolution sur les propriétés électriques du polymère. Dans ce modèle, des matrices sont

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13

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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14

CAVASIN, MATTEO. "Study on accelerated exposure testing and thermal insulation for a Glass Fibre Reinforced Polymer in simulated Oil & Gas environment." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2751272.

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15

Abraham, Berhane Teclesenbet. "Degradation and recovery of polydimethylsiloxane (PDMS) based composites used as high voltage insulators." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49902.

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Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: Polydimethylsiloxane (PDMS) compounds are utilized in outdoor high voltage insulation due to their low weight, vandalism resistance, better anti-contamination performance and their superior hydrophobic nature. Under severe environmental conditions and over prolonged service time, however, the hydrophobic surface can gradually become hydrophilic and then recover with adequate resting period. In this study, room temperature vulcanized (RTV) PDMS samples were prepared with different formulations and then exposed to corona d

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16

Rosecký, Pavel. "Analýza životnosti střešních PVC fólií." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392321.

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Roofing foils are known for several years as building material for roof hydro insulation but their life service is not yet fully known. This thesis is focused on problematics of life service of roofing foils. In theoretical part there is discribed structure of foils and impacts which assist degradation processes. Practical part modifies the methodology artificial aging which is simulated in QUV tester and Q-SUN XE3 tester lumber-rooms. The thesis is trying reach with the results to natural aging as close as possible. The testing captures attributes which are more prone to degradation.

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17

Sanz, Desco Raul. "Life Length and Stress Tests of Electric Machines for Electric Vehicles." Thesis, KTH, Skolan för kemivetenskap (CHE), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214554.

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Electrical machines have been widely used along the last decades with large life length under operating conditions. However, they will become more important in the upcoming years because of the emerging electric car industry. Thus, the maintenance cost of this technology can be reduced by extending the lifetime in the electrical machines. Despite the fact that existing numerous studies within the life length in these devices, only few study the effect of the thermomechanical stresses of insulation. The core of this master thesis is to study the influence of these stresses in the insulation mat

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18

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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19

Janíček, Vít. "Studium vlhkostně-transportních vlastností polymer-cementových stěrek pro vnější kontaktní zateplovací systémy budov." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392337.

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This diploma thesis deals with study of the moisture-transport properties of polymer cementious ETICS mortars at different doses of redispersible polymer powder. The effect of aerate on these screeds is also investigated. The thesis also evaluates the effect of use various external surface treatments due to risk of cumulate moisture in the perimeter structure.

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20

Nguyen, Quyet D. [Verfasser], Reimund [Akademischer Betreuer] Gerhard, and Ronald [Akademischer Betreuer] Plath. "Electro-acoustical probing of space-charge and dipole-polarization profiles in polymer dielectrics for electret and electrical-insulation applications / Quyet Doan Nguyen ; Reimund Gerhard, Ronald Plath." Potsdam : Universität Potsdam, 2019. http://d-nb.info/1218405678/34.

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21

Nguyen, Quyet Doan [Verfasser], Reimund [Akademischer Betreuer] Gerhard, and Ronald [Akademischer Betreuer] Plath. "Electro-acoustical probing of space-charge and dipole-polarization profiles in polymer dielectrics for electret and electrical-insulation applications / Quyet Doan Nguyen ; Reimund Gerhard, Ronald Plath." Potsdam : Universität Potsdam, 2019. http://d-nb.info/1218405678/34.

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22

Pallon, Love. "Polyethylene/metal oxide nanocomposites for electrical insulation in future HVDC-cables : probing properties from nano to macro." Doctoral thesis, KTH, Polymera material, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193591.

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Nanocomposites of polyethylene and metal oxide nanoparticles have shown to be a feasible approachto the next generation of insulation in high voltage direct current cables. In order to reach an operationvoltage of 1 MV new insulation materials with reduced conductivity and increased breakdown strengthas compared to modern low-density polyethylene (LDPE) is needed.In this work polyethylene MgO nanocomposites for electrical insulation has been produced andcharacterized both from an electrical and material perspective. The MgO nanoparticles weresynthesized into polycrystalline nanoparticles with

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23

Que, Weiguo. "Electric Field and Voltage Distributions along Non-ceramic Insulators." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1037387155.

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24

Bandaru, Venkata Raghava Sunil Kumar Reddy. "Deformation and Durability Studies of Insulation Polymers." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1227191899.

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25

Bruce, Graham Philip. "Ageing of Outdoor Polymeric Insulation under HVDC." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505489.

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26

Luangtriratana, Piyanuch. "Thermal insulation of polymeric composites using surface treatments." Thesis, University of Bolton, 2014. http://ubir.bolton.ac.uk/626/.

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Fibre-reinforced polymeric composites for structural applications are required to conform to specific fire performance requirements and to retain their mechanical integrity after exposure to heat/fire. Many polymeric composites will lose their structural integrity when exposed to temperatures close to the glass transition temperature of the resin matrix. The most effective technique of protecting these materials against heat and fire is the use of surface coatings, which can inhibit or reduce the heat transfer from the fire/heat source to the underlying structure. In this PhD, novel thermal ba

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27

Zhang, Hui. "Aging characteristics of solid polymeric materials used for electrical insulation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0018/MQ52685.pdf.

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28

Sim, Alec. "Unified model of charge transport in insulating polymeric materials." Thesis, Utah State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3606878.

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<p> Presented here is a detailed study of electron transport in highly disordered insulating materials (HDIM). Since HDIMs do not lend themselves to a lattice construct, the question arises: How can we describe their electron transport behavior in a consistent theoretical framework? In this work, a large group of experiments, theories, and physical models are coalesced into a single formalism to better address this difficult question. We find that a simple set of macroscopic transport equations--cast in a new formalism--provides an excellent framework in which to consider a wide array of exp

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29

Bernstein, Joseph Barry. "Electrical characterization of polymeric insulation by electrically stimulated acoustic wave measurements." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/54340.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.<br>Includes bibliographical references (leaves 207-211).<br>by Joseph Barry Bernstein.<br>Ph.D.

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30

Goss, Ben. "Degradation and life time prediction of high voltage insulation materials." Thesis, Queensland University of Technology, 2001.

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31

Saeishirazi, Mohammadmahdi [Verfasser]. "Influence of Nanofillers on High Voltage Polymeric Solid Insulation Systems / Mohammadmahdi Saeishirazi." München : Verlag Dr. Hut, 2014. http://d-nb.info/1060587580/34.

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32

Iddrissu, Ibrahim. "Study of electrical strength and lifetimes of polymeric insulation for DC applications." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/study-of-electrical-strength-and-lifetimes-of-polymeric-insulation-for-dc-applications(68af91aa-80ef-431c-ae93-9ffdb272d648).html.

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Polymeric insulating materials are being re-evaluated in the context of the re-emergence of HVDC and its advantages in bulk power transfer over long distances. This has been met with new sets of requirement such as; the use of polymeric insulation, compaction of HV equipment (e.g. HV cables), and innovations in converter technology. This equipment requires high power rating and hence will be exposed to high electric stresses. One of the properties of polymeric DC insulation is its ability to retain injected charges at high DC fields leading to local field modification and subsequent breakdown

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33

Cariou-Saintemarie, Nathalie. "Initiation of electrical degradation in high voltage polymeric cable insulation : electroluminescence detection." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342808.

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34

Cartwright, Giles Adrian. "The measurement of space charge and its effect on the breakdown strength of solid polymeric insulation." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240724.

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35

Zhang, Qiaoming. "Electrolyte-gated organic field-effect transistors based on organic semiconductor: insulating polymer blends." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667288.

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La presente tesis doctoral se centra en la fabricación, optimización, caracterización y aplicación de capas activas compuestas de una mezcla de semiconductor orgánico y un polímero aislante (OSC:PS) en transistores orgánicos de efecto de campo (EGOFET) con puerta-electrolítica. El EGOFET esta considerado como una prometedora plataforma de detección en el campo de la bioelectrónica debido a su capacidad de operar en medios electrolíticos. Hasta la fecha, aunque en varios proyectos de investigación se ha demostrado su alto potencial como plataforma de detección, existe algunos problemas que debe

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36

Ariffin, Azrul Mohd. "The measurement and modelling of electroluminescence in high voltage polymeric cable insulation materials." Thesis, University of Southampton, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494683.

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Since space charge plays a significant role in long-term electrical degradation of polymeric insulation in high voltage cables, there is growing interest in the measurement of the energy dissipation of mobile and trapped charges in the dielectric molecules. The dissipation process is associated with the emission of visible photons, a process known as electroluminescence (EL) and can be used, potentially, as an indicator for the inhibition of electrical ageing of insulation. This thesis is based on an investigation into the occurrence of EL in dielectric materials as a result of applying high a

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37

Sokotun, Zh, and O. Koshelieva. "Evaluation durability of polymeric insulating material of electric cables." Thesis, Київський національний університет технологій та дизайну, 2017. https://er.knutd.edu.ua/handle/123456789/6714.

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38

Sim, Alec. "Unified Model of Charge Transport in Insulating Polymeric Materials." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2044.

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Charge transport, charging, and subsequent electrostatic discharge due to interactions with the space environment are primary concerns of spacecraft designers. Developing a physical understanding of the interactions of charge with the multitude of materials that spacecraft are composed of is a critical step in understanding and mitigating both short-term and long-term spacecraft degradation. In particular, the study of charge transport in highly insulating materials is critical as they store charge longer, with higher capacity, and with greater destructive capability than other materials.The U

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39

Khan, Amir. "Vibro-acoustic products from re-cycled raw materials using a cold extrusion process : a continuous cold extrusion process has been developed to tailor a porous structure from polymeric waste, so that the final material possesses particular vibro-acoustic properties." Thesis, University of Bradford, 2008. http://hdl.handle.net/10454/4289.

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A cold extrusion process has been developed to tailor a porous structure from polymeric waste. The use of an extruder to manufacture acoustic materials from recycled waste is a novel idea and the author is not aware of any similar attempts. The extruder conveys and mixes the particulates with a reacting binder. The end result is the continuous production of bound particulates through which a controlled amount of carbon dioxide gas that is evolved during the reaction is used to give the desired acoustic properties. The cold extrusion process is a low energy consuming process that reprocesses th

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40

Blackmore, Paul David. "Degradation of polymeric outdoor high voltage insulation : surface discharge phenomena and condition assessment techniques." Thesis, Queensland University of Technology, 1997.

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41

Бойко, Антон Миколайович. "Діагностика полімерної ізоляції в процесі старіння кабелів під дією сильного електричного поля за трибоелектричним потенціалом". Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19647.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.09.13 – техніка сильних електричних та магнітних полів. Національний технічний університет "Харківський політехнічний інститут", Харків, 2015. Дисертація присвячена розробці та обґрунтуванню діагностики за трибоелектричним потенціалом для виявлення зміни поверхневих властивостей полімерної ізоляції в процесі старіння кабелів під дією сильного електричного поля, підвищеної температури та іонізуючого випромінювання. В процесі старіння для двошарової ізоляції на основі застосування схеми заміщення встановлено по

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42

Grove, Nicole R. "Characterization of functionalized polynorbornenes as interlevel dielectrics." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/11204.

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43

Hammal, Redouane. "Décharges partielles dans les condensateurs tout-film imprégnés." Université Joseph Fourier (Grenoble), 1998. http://www.theses.fr/1998GRE10006.

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Les decharges partielles ont ete mesurees sur des modeles de condensateurs tout-film dont le dielectrique est du polypropylene (pp) impregne. Ces cellules ont ete alimentees en haute tension alternative. L'influence de l'epaisseur de dielectrique ou des armatures ainsi que les effets de la temperature et du vieillissement ont ete examines. Les representations n() et q#m#o#y() du nombre et de l'amplitude des decharges dans la phase de la tension alternative servent a caracteriser la source de ces decharges : decharges en bord d'armature dans un modele de condensateur sans defaut ou decharges ge

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Бойко, Антон Миколайович. "Діагностика полімерної ізоляції в процесі старіння кабелів під дією сильного електричного поля за трибоелектричним потенціалом". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19642.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.09.13 – техніка сильних електричних та магнітних полів. Національний технічний університет "Харківський політехнічний інститут", Харків, 2015. Дисертація присвячена розробці та обґрунтуванню діагностики за трибоелектричним потенціалом для виявлення зміни поверхневих властивостей полімерної ізоляції в процесі старіння кабелів під дією сильного електричного поля, підвищеної температури та іонізуючого випромінювання. В процесі старіння для двошарової ізоляції на основі застосування схеми заміщення встановлено п

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Santana, Anderson Marques de. "Desenvolvimento de sistema para medição de hidrofobicidade em materiais poliméricos." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-12052017-104427/.

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Isoladores poliméricos têm crescentemente competido com os isoladores cerâmicos nas aplicações em sistemas elétricos de potência e é esperado que dominem as aplicações externas em alta tensão em um futuro próximo. Entretanto, há ainda algumas questões pendentes acerca do envelhecimento dos polímeros sobre estresse elétrico e climático. Dessa forma, a estabilidade da hidrofobicidade deve ser medida para estender o tempo de vida do isolador. Por esta razão, o desenvolvimento de um sistema de medição da degradação tem se tornado um fator relevante. Este trabalho apresenta e discute o desenvolvime

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Castrovilli, Matteo. "Characterization of the dipole processes of insulating materials used in aeronautical cables." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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The studies of this thesis are focused on aeronautic Polymers materials and their dielectric properties, in order to analyze the relaxation times for the materials of interest under an applied electric field, and in order to increase the work operations of the Novocontrol dielectric spectroscopy measurement machine available in the LAPLACE laboratory. In this context, the research team DSF in collaboration with MDCE, from LAPLACE laboratory, has developed in 2019 a numerical model taking into account the polar mechanisms of the polymer insulators used in the aeronautic industry. However, this

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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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Adetunji, Oludurotimi Oluwaseun. "The nature of electronic states in conducting polymer nano-networks." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1206218304.

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Andersen, Allen. "The Role of Recoverable and Non-Recoverable Defects in DC Electrical Aging of Highly Disordered Insulating Materials." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7047.

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Electrical insulation under high voltage can eventually fail, causing critical damage to electronics. Such electrostatic discharge (ESD) is the primary source of anomalies or failures on spacecraft due to charged particles from the Sun or planetary radiation belts accumulating in spacecraft insulators. Highvoltage direct current power distribution is another example of a growing industry that needs to estimate the operational lifetime of electrical insulation. My research compares laboratory tests of ESD events in common insulating materials to a physics-based model of breakdown. This model of

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Mokni, Marwa. "Optimisation et analyses des propriétés physico-chimiques et diélectriques du parylène D." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY080/document.

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Ce travail est consacré à l’élaboration et à la caractérisation de couches minces de parylène D déposées par dépôt chimique en phase vapeur (CVD) sous forme de films de quelques microns d’épaisseur. L’objectif de l’étude est d’évaluer les potentialités de ce polymère en remplacement des parylènes de type N ou C pour des applications spécifiques ou encore pour l’intégrer dans de nouvelles applications. Une première étude a consisté à évaluer l’impact des paramètres des dépôts CVD (température de sublimation, température de pyrolyse, température du substrat d’accueil du film déposé) sur les chan

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