Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix
Identifieur interne : 000006 ( Hal/Checkpoint ); précédent : 000005; suivant : 000007Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix
Auteurs : Guillaume Cazaux [France]Source :
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Abstract
The present work is a contribution to the thermoplastic composites manufacturing by a non-reactive Liquid Composite Molding process for the automotive industry.The thesis was carried out by the « ANR TAPAS » project (Thermoplastic Process for Automotive Composite Structure) and was focused on the elaboration of continious-fiber reinforced composites plates injected with a high-fluidity polyamide 6,6 (PA 6,6) by the Resin Transfer Molding process.The first goal was focused on increasing injection rates through the study of the in-plane permeability of unidirectional (UD) glass fiber fabrics with high mechanical modulus (HM). Experiments and modelling results showed that the permeability of these UD has been enhanced by modifying specific structural parameters of their architecture. The analytical model developped and used is based on a flow distribution according two differents scales of porosity : in and inter-yarns.The second part of the work was focused on the understanding of phenomenas that take place at the interface created between glass fiber and the matrix during the impregnation step. The wettability and adhesion of molten PA 6,6 dropped on a glass substrate is studied at different processing temperature. The last part introduce the thermoplastic composite plates elaborated by RTM-TP process. The optimum operating conditions as well as preforms saturation and mechanical properties are also studied and discussed.
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pores</term><term>Mouillage à chaud</term><term>Perméabilité</term><term>Phénomènes aux interfaces</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The present work is a contribution to the thermoplastic composites manufacturing by a non-reactive Liquid Composite Molding process for the automotive industry.The thesis was carried out by the « ANR TAPAS » project (Thermoplastic Process for Automotive Composite Structure) and was focused on the elaboration of continious-fiber reinforced composites plates injected with a high-fluidity polyamide 6,6 (PA 6,6) by the Resin Transfer Molding process.The first goal was focused on increasing injection rates through the study of the in-plane permeability of unidirectional (UD) glass fiber fabrics with high mechanical modulus (HM). Experiments and modelling results showed that the permeability of these UD has been enhanced by modifying specific structural parameters of their architecture. The analytical model developped and used is based on a flow distribution according two differents scales of porosity : in and inter-yarns.The second part of the work was focused on the understanding of phenomenas that take place at the interface created between glass fiber and the matrix during the impregnation step. The wettability and adhesion of molten PA 6,6 dropped on a glass substrate is studied at different processing temperature. The last part introduce the thermoplastic composite plates elaborated by RTM-TP process. The optimum operating conditions as well as preforms saturation and mechanical properties are also studied and discussed.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix</title><title xml:lang="fr">FAISABILITE DES PROCEDES LCM POUR L'ELABORATION DE COMPOSITES RENFORT CONTINU A MATRICE THERMOPLASTIQUE POLYAMIDE</title><author role="aut"><persName><forename type="first">Guillaume</forename><surname>Cazaux</surname></persName><email></email><idno type="halauthor">1389656</idno><affiliation ref="#struct-56485"></affiliation></author><editor role="depositor"><persName><forename>Guillaume</forename><surname>Cazaux</surname></persName><email>guillaume.cazaux@gmail.com</email></editor><funder ref="#projanr-34852"></funder><funder>Financement ANR - CNRS</funder></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2016-09-28 20:11:32</date><date type="whenModified">2016-10-03 06:50:47</date><date type="whenReleased">2016-09-29 14:35:47</date><date type="whenProduced">2016-06-16</date><date type="whenEndEmbargoed">2016-09-28</date><ref type="file" target="https://tel.archives-ouvertes.fr/tel-01373525/document"><date notBefore="2016-09-28"></date></ref><ref type="file" n="1" target="https://tel.archives-ouvertes.fr/tel-01373525/file/Manuscrit%20Guillaume%20Cazaux%20-%20version%20finale.pdf"><date notBefore="2016-09-28"></date></ref></edition><respStmt><resp>contributor</resp><name key="455125"><persName><forename>Guillaume</forename><surname>Cazaux</surname></persName><email>guillaume.cazaux@gmail.com</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">tel-01373525</idno><idno type="halUri">https://tel.archives-ouvertes.fr/tel-01373525</idno><idno type="halBibtex">cazaux:tel-01373525</idno><idno type="halRefHtml">Sciences de l'ingénieur [physics]. Université du Havre, 2016. Français. <NNT : 2016NORMLH10></idno><idno type="halRef">Sciences de l'ingénieur [physics]. Université du Havre, 2016. Français. <NNT : 2016NORMLH10></idno></publicationStmt><seriesStmt><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="UNIV-LEHAVRE">Université du Havre</idno><idno type="stamp" n="COMUE-NORMANDIE">Normandie Université</idno></seriesStmt><notesStmt></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Feasability of LCM processes in the elaboration of continuous fiber-reinforced composite with a thermoplastic polyamid matrix</title><title xml:lang="fr">FAISABILITE DES PROCEDES LCM POUR L'ELABORATION DE COMPOSITES RENFORT CONTINU A MATRICE THERMOPLASTIQUE POLYAMIDE</title><author role="aut"><persName><forename type="first">Guillaume</forename><surname>Cazaux</surname></persName><idno type="halAuthorId">1389656</idno><affiliation ref="#struct-56485"></affiliation></author></analytic><monogr><idno type="nnt">2016NORMLH10</idno><imprint><date type="dateDefended">2016-06-16</date></imprint><authority type="institution">Université du Havre</authority><authority type="school">SPMII - Sciences Physiques, Mathématiques et de l'Information pour l'Ingénieur</authority><authority type="supervisor">Pr. Joël Bréard</authority><authority type="jury">Pr. Véronique Michaud</authority><authority type="jury">Pr. Christophe Binétruy</authority><authority type="jury">Dr. Jean-luc Bailleul</authority><authority type="jury">Dr. Gilles Orange</authority><authority type="jury">Dr. Michel Nardin</authority><authority type="jury">Dr. Moussa Gomina</authority><authority type="jury">Dr. Benoit Duchemin</authority><authority type="jury">Dr. Laurent Bizet</authority></monogr></biblStruct></sourceDesc><profileDesc><langUsage><language ident="fr">French</language></langUsage><textClass><keywords scheme="author"><term xml:lang="en">Thermoplastic composites</term><term xml:lang="en"> RTM-TP process</term><term xml:lang="en"> Double-scale porosity approach</term><term xml:lang="en"> High-fluidity polyamids</term><term xml:lang="en"> permeability</term><term xml:lang="en"> Unidirectionnal glass fiber fabrics</term><term xml:lang="en"> Wettability</term><term xml:lang="en"> Capillary pressure</term><term xml:lang="en"> Saturation</term><term xml:lang="fr">Perméabilité</term><term xml:lang="fr">Approche à deux échelles de pores</term><term xml:lang="fr">Mouillage à chaud</term><term xml:lang="fr">Phénomènes aux interfaces</term></keywords><classCode scheme="classification">MSC</classCode><classCode scheme="halDomain" n="spi">Engineering Sciences [physics]</classCode><classCode scheme="halDomain" n="chim">Chemical Sciences</classCode><classCode scheme="halDomain" n="phys">Physics [physics]</classCode><classCode scheme="halTypology" n="THESE">Theses</classCode></textClass><abstract xml:lang="en">The present work is a contribution to the thermoplastic composites manufacturing by a non-reactive Liquid Composite Molding process for the automotive industry.The thesis was carried out by the « ANR TAPAS » project (Thermoplastic Process for Automotive Composite Structure) and was focused on the elaboration of continious-fiber reinforced composites plates injected with a high-fluidity polyamide 6,6 (PA 6,6) by the Resin Transfer Molding process.The first goal was focused on increasing injection rates through the study of the in-plane permeability of unidirectional (UD) glass fiber fabrics with high mechanical modulus (HM). Experiments and modelling results showed that the permeability of these UD has been enhanced by modifying specific structural parameters of their architecture. The analytical model developped and used is based on a flow distribution according two differents scales of porosity : in and inter-yarns.The second part of the work was focused on the understanding of phenomenas that take place at the interface created between glass fiber and the matrix during the impregnation step. The wettability and adhesion of molten PA 6,6 dropped on a glass substrate is studied at different processing temperature. The last part introduce the thermoplastic composite plates elaborated by RTM-TP process. The optimum operating conditions as well as preforms saturation and mechanical properties are also studied and discussed.</abstract><abstract xml:lang="fr">Les travaux présentés sont une contribution à l’élaboration de composites à matrices thermoplastiques (TP) par un procédé de type Liquid Composite Molding non réactif pour l’industrie automobile.La thèse a été effectuée dans le cadre du projet ANR TAPAS (ThermoplAstic Process for Automotive composite Structure) et s’est focalisée sur la mise en œuvre de plaques composites en renfort continu injectées avec des matrices polyamides 6,6 (PA 6,6) de hautes fluidités par Resin Transfer Molding.Le premier objectif est porté sur l’optimisation des cadences d’injection à travers l’étude de la perméabilité de préformes unidirectionnelles (UD) en fibres de verre et à hauts modules mécaniques. L’architecture de ces UD a ainsi été modifiée de manière à faciliter les écoulements. La perméabilité des différents tissus a pu être évaluée par un couplage entre des mesures expérimentales et une modélisation analytique basée sur un raisonnement à deux échelles de pores : l’écoulement intra et inter-torons. Le deuxième objectif sur lequel les travaux de thèse se sont concentrés s’est reposé sur la maitrise de l’état d’imprégnation par le bais d’une étude complète sur les phénomènes qui se déroulent à l’interface entre la fibre et la matrice à haute température. Plusieurs viscosités et formulations du PA 6,6 ainsi qu’un traitement appliqué sur le verre ont pu être caractérisés et discutés en termes de mouillabilité et d’adhésion.Enfin, la dernière partie du manuscrit présente les résultats obtenus sur les plaques mises en œuvre par RTM-TP en injection in-plane. Les conditions optimales de fonctionnement ainsi que les aspects de saturation, de santé matière et des propriétés mécaniques sont ensuite présentés et discutés.</abstract><particDesc><org type="consortium">Projet ANR TAPAS</org></particDesc></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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