Publicación:
Análisis mecánico y térmico de un material compuesto de matriz de resina de poliéster y fibras del mesocarpio del coco elaborado a través de la técnica de moldeo por transferencia de resina asistido al vacío

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dc.audience
dc.contributor.advisorEspitia Sanjuán, Luis Armando
dc.contributor.authorMachado Acosta, Samir Alejandro
dc.contributor.juryUnfried Silgado, Jimy
dc.contributor.juryRivero Romero, Oswaldo
dc.date.accessioned2024-11-16T15:26:33Z
dc.date.available2025-11-15
dc.date.available2024-11-16T15:26:33Z
dc.date.issued2024-11-15
dc.description.abstractEn este trabajo se elaboraron materiales compuestos con matriz de resina de poliéster y adición de tejidos con 1, 2 y 3 hilos trenzados de fibras de coco sin tratar y tratadas con NaOH al 5 % mediante la técnica de moldeo por transferencia de resina asistido al vacío (VARTM); las fibras de coco fueron extraídas manualmente y secadas a 90 ºC para luego ser mercerizadas con NaOH al 5%. Las fibras de coco sin tratar y tratadas fueron caracterizadas mediante FTIR, microscopia electrónica de barrido (SEM) y análisis termogravimétrico (TGA), los materiales compuestos fueron sometidos a ensayos mecánicos y térmicos, para obtener propiedades a tensión, flexión y de conductividad térmica acorde a las normas ASTM D3039, ASTM D790 y ASTM C177. Se encontró que las fibras sin tratar están compuestas principalmente de celulosa, lignina y de hemicelulosa y otros minerales en menor cantidad, Se observó que el tratamiento químico generó un cambio superficial en las fibras y expuso microfibrillas en la superficie, las fibras
dc.description.abstractIn this study, composite materials were developed using a polyester resin matrix with the addition of fabrics containing 1, 2, and 3 braided strands of untreated and 5% NaOH-treated coconut fibers, using the vacuum-assisted resin transfer molding (VARTM) technique. The coconut fibers were manually extracted and dried at 90°C before being mercerized with 5% NaOH. The untreated and treated coconut fibers were characterized using FTIR, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). The composite materials underwent mechanical and thermal tests to determine their tensile, flexural, and thermal conductivity properties according to ASTM D3039, ASTM D790, and ASTM C177 standards. It was found that untreated fibers mainly consist of cellulose, lignin, hemicellulose, and minor quantities of other minerals. The chemical treatment induced a surface change in the fibers, exposing microfibrils on their surface. Both untreated and treated fibers were thermally stable up to 260°C and 250°C, respeceng
dc.description.degreelevelMaestría
dc.description.degreenameMagíster en Ingeniería Mecánica
dc.description.modalityTrabajos de Investigación y/o Extensión
dc.description.tableofcontentsRESUMEN 8
dc.description.tableofcontentsABSTRACT 9
dc.description.tableofcontents1. Capítulo I. Descripción del trabajo de investigación 10
dc.description.tableofcontents1.1. Introducción 10
dc.description.tableofcontents1.2. Objetivos 12
dc.description.tableofcontents1.2.1. Objetivo general 12
dc.description.tableofcontents1.2.2. Objetivos específicos 12
dc.description.tableofcontents1.3. Estructura de la tesis. 13
dc.description.tableofcontents1.4. REVISIÓN DE LITERATURA. 14
dc.description.tableofcontents1.4.1. Fibras naturales 14
dc.description.tableofcontents1.4.2. Fibras del mesocarpio del coco 16
dc.description.tableofcontents1.4.3. Tratamientos químicos sobre fibras naturales 17
dc.description.tableofcontents1.4.4. Materiales compuestos 17
dc.description.tableofcontents1.4.5. Moldeo por transferencia de resina asistido al vacío (VARTM) 18
dc.description.tableofcontents1.5. Trabajos derivados 22
dc.description.tableofcontents2. Capítulo II. Diseño Experimental 24
dc.description.tableofcontents2.1. Universo 24
dc.description.tableofcontents2.2. Variables 24
dc.description.tableofcontents2.3. Recolección de datos 25
dc.description.tableofcontents2.4. Escogencia del tamaño muestral 27
dc.description.tableofcontents3. Capítulo III. Caracterización inicial 30
dc.description.tableofcontents3.1. Introducción 30
dc.description.tableofcontents3.2. Materiales y métodos 30
dc.description.tableofcontents3.3. Resultados 32
dc.description.tableofcontents3.4. Conclusiones. 40
dc.description.tableofcontents4. Capítulo IV: Elaboración de materiales compuestos 41
dc.description.tableofcontents4.1. Introducción 41
dc.description.tableofcontents4.2. Materiales y métodos. 41
dc.description.tableofcontents4.3. Resultados. 45
dc.description.tableofcontents4.4. Conclusiones 53
dc.description.tableofcontents5. Capítulo V. Medición de propiedades mecánicas y térmicas. 54
dc.description.tableofcontents5.1. Introducción. 54
dc.description.tableofcontents5.2. Materiales y métodos. 54
dc.description.tableofcontents5.2.1. Ensayos de tensión 54
dc.description.tableofcontents5.2.2. Ensayos de flexión 55
dc.description.tableofcontents5.2.3. Ensayos de conductividad térmica 55
dc.description.tableofcontents5.3. Resultados 56
dc.description.tableofcontents5.4. Conclusiones 71
dc.description.tableofcontents6. Conclusiones Generales y futuros trabajos 73
dc.description.tableofcontents6.1. Objetivo específico I: 73
dc.description.tableofcontents6.2. Objetivo específico II: 73
dc.description.tableofcontents6.3. Objetivo específico III: 74
dc.description.tableofcontents6.4. Futuros trabajos. 74
dc.description.tableofcontents7. Bibliografía. 75
dc.description.tableofcontentsANEXOS 83
dc.format.mimetypeapplication/pdf
dc.identifier.instnameUniversidad de Córdoba
dc.identifier.reponameRepositorio Institucional Unicórdoba
dc.identifier.repourlhttps://repositorio.unicordoba.edu.co
dc.identifier.urihttps://repositorio.unicordoba.edu.co/handle/ucordoba/8743
dc.publisherUniversidad de Córdoba
dc.publisher.facultyFacultad de Ingeniería
dc.publisher.placeMontería, Córdoba, Colombia
dc.publisher.programMaestría en Ingeniería Mecánica
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dc.relation.referencesWu, J., Du, X., Yin, Z., Xu, S., Xu, S., & Zhang, Y. (2019). Preparation and characterization of cellulose nanofibrils from coconut coir fibers and their reinforcements in biodegradable composite films. Carbohydrate Polymers, 211, 49-56. doi:10.1016/j.carbpol.2019.01.093
dc.relation.referencesWu, Y., Xia, C., Cai, L., Garcia, A. C., & Shi, S. Q. (2018). Development of natural fiber-reinforced composite with comparable mechanical properties and reduced energy consumption and environmental impacts for replacing automotive glass-fiber sheet molding compound. Journal of Cleaner Production, 184, 92-100. doi:10.1016/j.jclepro.2018.02.257
dc.relation.referencesYan, L., Chouw, N., Huang, L., & Kasal, B. (2016). Effect of alkali treatment on microstructure and mechanical properties of coir fibres, coir fibre reinforced-polymer composites and reinforced-cementitious composites. Construction & Building Materials, 112, 168-182.
dc.rightsCopyright Universidad de Córdoba, 2024
dc.rights.accessrightsinfo:eu-repo/semantics/embargoedAccess
dc.rights.coarhttp://purl.org/coar/access_right/c_f1cf
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.keywordsCoconout fibers
dc.subject.keywordsComposite material
dc.subject.keywordsVARTM
dc.subject.keywordsNaOH
dc.subject.keywordsMechanical Properties
dc.subject.keywordsThermal conductivity
dc.subject.keywordsFabric
dc.subject.proposalFibras de coco
dc.subject.proposalMaterial compuesto
dc.subject.proposalVARTM
dc.subject.proposalPropiedades mecánicas
dc.subject.proposalConductividad térmica
dc.subject.proposalTejido
dc.subject.proposalNaOH
dc.titleAnálisis mecánico y térmico de un material compuesto de matriz de resina de poliéster y fibras del mesocarpio del coco elaborado a través de la técnica de moldeo por transferencia de resina asistido al vacío
dc.typeTrabajo de grado - Maestría
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dspace.entity.typePublication
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