Examinando por Materia "Adhesives"
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Ítem Caracterización mecánica de uniones adhesivas caucho-metal(Universidad EAFIT, 2011) Gómez Gómez, Fabián Esteban; Escobar Trujillo, Santiago; Deossa Pineda, Nataly AndreaEste proyecto tiene como objetivo principal la caracterización de uniones adhesivas caucho-metal realizando tratamientos superficiales a los sustratos -- Los tratamientos utilizados fueron de tipo mecánico (granallado) y químico (Primer) y tienen como finalidad modificar superficialmente uno de los sustratos para establecer si la resistencia de la unión adhesiva se modifica -- Para ello, se fabrican probetas tipo sándwich de caucho y metal y se ensayan a tracción de acuerdo a la norma ISO 1827 -- Los resultados obtenidos son graficados y analizados -- Posteriormente las superficies falladas fueron observadas mediante microscopía electrónica de barrido y se realizó un análisis de las micrografíasÍtem Modelo de negocio para exportación de adhesivos y barnices a Centroamérica: Costa Rica, Guatemala y Panamá(Universidad EAFIT, 2015) Ortíz Orrego, Jorge Mario; Vélez Restrepo, Juan Fernando; Buitrago Quintero, Carlos Jaime; Uribe de Correa, Beatriz AmparoCon el fuerte entorno competitivo que generó la globalización y la apertura económica, las empresas necesitan cada vez más explorar su incursión en nuevos mercados para crecer o subsistir en condiciones de rentabilidad -- Costa Rica, Guatemala y Panamá representan una oportunidad cercana para las empresas del sector químico colombiano de barnices y adhesivos, mediante la exportación de sus productos -- La evaluación de esta oportunidad de negocio utilizando una metodología como Canvas, complementada por diversas herramientas de análisis competitivo, posibilitaron definir una propuesta de valor para sustentar su potencial -- Para ello fue necesario realizar un diagnóstico Canvas inicial, para identificar los recursos estratégicos internos y externos, realizar una revisión detallada de los diferentes aspectos sociales, económicos, ecológicos, políticos, legales, tecnológicos y de valores en los países en estudio, y así determinar el mercado objetivo real -- Posteriormente, se realizó un análisis estructural, que permitió ahondar en las diversas problemáticas y encontrar sus dependencias, determinando los diferentes actores que afectan el negocio potencial, y realizar escenarios a futuro que permitieron mantener una actitud proactiva para evolucionar de manera positiva ante los potenciales conflictos -- Finalmente, se tomaron de nuevo los diversos bloques de la metodología Canvas, con el propósito de definir con claridad cuál debía ser la propuesta de valor que permitió abordar, mediante un modelo de entrada como la exportación, los diversos clientes de barnices y adhesivos en el mercado centroamericano para los exportadores colombianosÍtem Water-based adhesive formulations for rubber to metal bonding developed by statistical design of experiments(Elsevier Ltd, 2017-03-01) Lasprilla-Botero, J.; Álvarez-Láinez, M.; Acosta, D.A.; Lasprilla-Botero, J.; Álvarez-Láinez, M.; Acosta, D.A.; Universidad EAFIT. Departamento de Ingeniería de Procesos; Procesos Ambientales (GIPAB)Waterborne adhesives for rubber to metal bonding have been available since 1990. However, published information about their formulation has been limited, as proprietary restrictions are exercised by companies. As a consequence, the way these adhesives interact with substrates has not been studied extensively. With the aim of investigating the effect the components of a waterborne adhesive have on rubber to metal bonding, fractional factorial and surface response methodologies of design of experiments were employed in this study. Twenty six formulations were prepared with a polychloroprene latex as the adhesive polymer. Viscosity, wettability and non-volatile solids content were measured with each liquid adhesive, while the mechanical strength was evaluated by applying a tensile mechanical stress over cured solid adhesive films. Adhesion properties were evaluated by using a single lap-shear test on metal to metal joints and a pull-out test on rubber to metal joints. The results showed that the components with the largest relative influence on cohesive and adhesives forces were tackifier resin, silicon dioxide and polychloroprene latex type. In order to better understand the contributions of these variables, mathematical models correlating them with the response variables were obtained. This study is valuable in explaining how, through statistical methods, a waterborne adhesive for rubber to metal bonding can be formulated with a reasonably low number of experiments. © 2016 Elsevier LtdÍtem Water-based adhesive formulations for rubber to metal bonding developed by statistical design of experiments(Elsevier Ltd, 2017-03-01) Lasprilla-Botero, J.; Álvarez-Láinez, M.; Acosta, D.A.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)Waterborne adhesives for rubber to metal bonding have been available since 1990. However, published information about their formulation has been limited, as proprietary restrictions are exercised by companies. As a consequence, the way these adhesives interact with substrates has not been studied extensively. With the aim of investigating the effect the components of a waterborne adhesive have on rubber to metal bonding, fractional factorial and surface response methodologies of design of experiments were employed in this study. Twenty six formulations were prepared with a polychloroprene latex as the adhesive polymer. Viscosity, wettability and non-volatile solids content were measured with each liquid adhesive, while the mechanical strength was evaluated by applying a tensile mechanical stress over cured solid adhesive films. Adhesion properties were evaluated by using a single lap-shear test on metal to metal joints and a pull-out test on rubber to metal joints. The results showed that the components with the largest relative influence on cohesive and adhesives forces were tackifier resin, silicon dioxide and polychloroprene latex type. In order to better understand the contributions of these variables, mathematical models correlating them with the response variables were obtained. This study is valuable in explaining how, through statistical methods, a waterborne adhesive for rubber to metal bonding can be formulated with a reasonably low number of experiments. © 2016 Elsevier LtdÍtem Water-based adhesive formulations for rubber to metal bonding developed by statistical design of experiments(Elsevier Ltd, 2017-03-01) Lasprilla-Botero, J.; Álvarez-Láinez, M.; Acosta, D.A.; Universidad EAFIT. Departamento de Ingeniería de Procesos; Desarrollo y Diseño de ProcesosWaterborne adhesives for rubber to metal bonding have been available since 1990. However, published information about their formulation has been limited, as proprietary restrictions are exercised by companies. As a consequence, the way these adhesives interact with substrates has not been studied extensively. With the aim of investigating the effect the components of a waterborne adhesive have on rubber to metal bonding, fractional factorial and surface response methodologies of design of experiments were employed in this study. Twenty six formulations were prepared with a polychloroprene latex as the adhesive polymer. Viscosity, wettability and non-volatile solids content were measured with each liquid adhesive, while the mechanical strength was evaluated by applying a tensile mechanical stress over cured solid adhesive films. Adhesion properties were evaluated by using a single lap-shear test on metal to metal joints and a pull-out test on rubber to metal joints. The results showed that the components with the largest relative influence on cohesive and adhesives forces were tackifier resin, silicon dioxide and polychloroprene latex type. In order to better understand the contributions of these variables, mathematical models correlating them with the response variables were obtained. This study is valuable in explaining how, through statistical methods, a waterborne adhesive for rubber to metal bonding can be formulated with a reasonably low number of experiments. © 2016 Elsevier Ltd