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Mechanical and multifunctional properties of polymer composites based on nano-structures

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dc.contributor.advisorMolina Aldareguia, Jon Mikeles
dc.contributor.advisorGuzmán de Villoria Lebiedziejewski, Robertoes
dc.contributor.authorHerrera Ramírez, Luis Carloses
dc.contributor.departamentoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.contributor.otherIMDEA Materials Instituteen
dc.date.accessioned2018-03-05T11:04:34Z
dc.date.available2018-03-05T11:04:34Z
dc.date.issued2017-12
dc.date.submitted2017-12-14
dc.descriptionMención Internacional en el título de doctores
dc.description.abstractThe continuous development of industries, such as aerospace, automobile or energy, requires a new generation of polymer composites with novel functionalities, i.e. desired values of thermal and electrical conductivities, while maintaining their mechanical properties to be used in structural applications. One example of this new generation of composites could be hybrid fibre-reinforced polymers, consisting in fibre-reinforced polymers in which the matrix is appropriately modified with fillers. As a first step in the above mentioned approach, in this thesis the modification of polymers with different carbon-based fillers is analysed. Graphite nanoplatelets and carbon nanotubes were used to prepare polypropylene composites. Both fillers provided modest improvements on mechanical properties, while the electrical conductivity of the CNT composites was comparable to similar materials previously reported. The third filler was a novel micron-scaled carbon material which exhibited potential to perform as reinforcing agent in polymeric matrices. It was found that the filler significantly enhanced the thermal stability of the composites, while having modest effect on their thermal conductivity and mechanical behaviour. In order to produce polymer composites with specific combination of properties, hybrid carbon-based fillers, using spherical micro- and nano-particles as substrates, were obtained by the chemical vapour deposition technique (CVD). The first developed hybrid filler consisted in alumina nanoparticles and carbon nanotubes and it was used as filler for epoxy matrix composites. The obtained composites showed enhanced thermal and electrical conductivity compared with the neat matrix, although having similar mechanical behaviour. Finally, hollow glass microspheres with carbon nanofibres grown on its surface were obtained and then dispersed within a urethane acrylate resin. The main characteristic of the resulting composites is their low density and thermal conductivity while having higher electrical conductivity, compared to the neat resinen
dc.description.abstractEl continuo desarrollo de industrias como la aeroespacial, del automóvil o de la energía, requiere una nueva generación de materiales compuestos poliméricos con nuevas características, como niveles deseados de conductividades térmicas y eléctricas, y que al mismo tiempo mantengan unos niveles de propiedades mecánicas adecuados para ser usados en aplicaciones estructurales. Un ejemplo de materiales compuestos poliméricos mejorados podrían ser los materiales compuestos híbridos de matriz polimérica reforzados con fibras, en los cuales la matriz polimérica está modificada con los refuerzos apropiados. Como primera etapa en el desarrollo de los materiales anteriormente mencionados, en ésta tesis se han analizado varios polímeros modificados con diferentes refuerzos basados en carbono. Se han empleado nanoplaquetas de grafito y nanotubos de carbono para la preparación de materiales compuestos de matriz polipropileno. Ambos refuerzos proporcionaron ligeros aumentos de las propiedades mecánicas, mientras que la conductividad eléctrica de los materiales con nanotubos de carbono es comparable a la de materiales similares reportados en la literatura disponible. El tercer material es un novedoso refuerzo micrométrico basado en carbono, que ha sido empleado para el procesado de materiales compuestos de polipropileno. Éste refuerzo mejoró significativamente la estabilidad térmica del polipropileno al mismo tiempo que produjo mejoras más modestas en conductividad térmica y propiedades mecánicas. Con el objetivo de obtener materiales compuestos con las combinaciones deseadas de propiedades, se han obtenido materiales híbridos en estructuras de carbono por medio de un proceso de deposición química en fase vapor. Para ello se han empleado partículas cerámicas micro y nanométricas. En primer lugar se ha desarrollado un material híbrido compuesto por nanopartículas de alúmina y nanotubos de carbono, usado como refuerzo para una resina epoxi. Los materiales compuestos obtenidos presentaron mayores niveles de conductividad térmica y eléctrica mayores comparados con la matriz sin modificar, sin embargo su comportamiento mecánico era similar al de la resina. En segundo lugar se han obtenido microesferas de vidrio huecas con nanofibras de carbono sintetizadas en su superficie. Éste material se ha usado como refuerzo de materiales compuestos con una resina uretano acrilato. Las principales características de los materiales desarrollados son su baja densidad y conductividad térmica y alta conductividad eléctrica, comparada con la resina pura.es
dc.description.degreePrograma Oficial de Doctorado en Ciencia e Ingeniería de Materialeses
dc.description.responsabilityPresidente: Miguel Ángel López Manchado.- Secretario: Silvia González Prolongo.- Vocal: Cristina Vallés Callizoes
dc.description.sponsorshipChapter 3: This work was supported by the European Commission under the 7th Framework Program, NFRP project (PICIG12-GA-2012-33924). R.G.V. gratefully acknowledges the Spanish Ministry of Science and Innovation for financial funding through the Ramon y Cajal Fellowship. J.P.F-B is grateful for support from the “Marie Curie” Amarout Programme. -- Chapter 4: This work was supported by the European Commission under the 7th Framework Program, NFRP project (PICIG12-GA-2012- 33924), ROBOHEALTH-A project (DPI2013-47944-C4-1-R) funded by Spanish Ministry of Economy and Competitiveness and from the RoboCity2030-II-CM project (S2009/DPI-1559), funded by Programas de Actividades I+D en la Comunidad de Madrid and cofunded by Structural Funds of the EU. R.G.V. gratefully acknowledges the Spanish Ministry of Science and Innovation for funding through the Ramon y Cajal Fellowship. L.C.H-R acknowledges the support from the Spanish Ministry of Education through the FPU programme (FPU14/06843). The authors would also thank to the Ministerio de Economía y Competitividad for the Torres Quevedo Grant of Pere Castell (PTQ12-05223). -- Chapter 5: This work was supported by the European Commission under the 7th Framework Program, NFRP project (PICIG12-GA-2012-33924). R. G. V. gratefully acknowledges the Spanish Ministry of Science and Innovation for financial funding through the Ramon y Cajal Fellowship. L. C. H-R acknowledges the support from the Spanish Ministry of Education through the FPU programme (FPU14/06843).-- Chapter 6: This work was supported by the European Commission under the 7th Framework Program, NFRP project (PICIG12-GA-2012-33924). R. G. V. gratefully acknowledges the Spanish Ministry of Science and Innovation for financial funding through the Ramon y Cajal Fellowship. L. C. H-R acknowledges the support from the Spanish Ministry of Education through the FPU programme (FPU14/06843).-- Chapter 7: This work was supported by the European Commission under the 7th Framework Program, NFRP project (PICIG12-GA-2012-33924), ROBOHEALTH-A project (DPI2013-47944-C4-1-R) funded by Spanish Ministry of Economy and Competitiveness and from the RoboCity2030-II-CM project (S2009/DPI-1559), funded by “Programas de Actividades I+D en la Comunidad de Madrid” and co-funded by Structural Funds of the EU. R. G. V. gratefully acknowledges the Spanish Ministry of Science and Innovation for financial funding through the Ramon y Cajal Fellowship. L. C. H-R acknowledges the support from the Spanish Ministry of Education through the FPU programme (FPU14/06843).en
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/10016/26360
dc.language.isoengen
dc.relation.projectIDeu-repo/grantAgreement/EC/FP7/PICIG12-GA-2012-33924en
dc.relation.projectIDGobierno de España. FPU014/06843es
dc.relation.projectIDGobierno de España. EST15/00425es
dc.relation.projectIDGobierno de España. DPI2013-47944-C4-1-R
dc.relation.projectIDComunidad de Madrid. S2009/DPI-1559/ROBOCITY2030 II
dc.relation.projectIDGobierno de España. PTQ12-05223
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherPolymer compositesen
dc.subject.otherThermoplastic polymersen
dc.subject.otherNanotechnologyen
dc.subject.otherMechanical behavioren
dc.subject.otherMechanical behaviouren
dc.subject.otherMateriales compuestoses
dc.subject.otherMatriz poliméricaes
dc.subject.otherPolímeros termoplásticoses
dc.subject.otherEnsayo de materialeses
dc.subject.otherResistencia de materialeses
dc.titleMechanical and multifunctional properties of polymer composites based on nano-structuresen
dc.typedoctoral thesis*
dspace.entity.typePublication
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