Publication: Comportamiento a fractura de resinas epoxi cargadas con partículas de carburo de silicio : influencia de la proporción y silanización de las partículas
Loading...
Identifiers
Publication date
2009
Defense date
2009
Authors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Impact
Export
Abstract
Cada aplicación en ingeniería exige un material específico donde los materiales compuestos son los protagonistas. Se aprovecha lo mejor de varios materiales distintos, para formar un solo material que satisfaga una necesidad concreta. Este proyecto analiza diversos parámetros de influencia en el comportamiento de materiales poliméricos, en concreto de las resinas epoxi. Las variables objeto del estudio son: · Proporción de partículas de carburo de silicio (SiC) con las que se reforzarán los materiales poliméricos. · Silanización de dichas partículas para conseguir mejor adherencia a la matriz. · Tipo de probeta utilizada en cada ensayo según la normativa escogida. La parte teórica consistirá en el cálculo de los valores de tenacidad y energía en la fractura del material utilizando las ecuaciones de la normativa vigente y los resultados de los ensayos, y a su vez una interpretación de dicha normativa para realizarlos. La parte experimental del proyecto la ocupará la caracterización mecánica de los composites, que se hará mediante las medidas de resistencia en el ensayo de fractura y el ensayo de flexión. Además se observarán las superficies de fractura en las probetas mediante un microscopio electrónico para determinar el grado de anclaje del carburo de silicio en la matriz epoxi. También se intentará optimizar el proceso de preparación de probetas del ensayo de fractura, para conseguir iniciar la grieta correctamente antes de ensayarlas. Finalmente con los resultados experimentales obtenidos se podrán extraer unas conclusiones, que aplicadas a los estudios en este campo abren un amplio abanico de posibilidades y aplicaciones en diversos procesos industriales.--------------------------------------------------------------------------------------------------------------------------
The engineering applications need a specific material, so composites are the solution. The best properties of some materials are exploited to obtain a single material which satisfies a concrete necessity. This research analyzes some influence parameters in the behaviour of the polymeric materials, specifically for the epoxy resins. The variables to studying are the following: · Silicon carbide (SiC) particles proportion as reinforcement in polymeric materials. · Coatting the SiC particles in order to improve better adhesión between the matrix and them. · The sort of specimens used in each test according to the selected guideline. The theoretical part will consist of in the calculate of the resilience and energy values on the break of the material using the equations in accordance with the law currently in force and the results of the test and at the same time an interpretation of the said regulation in order to carry out it. The experimental part of the projection will be occupy the mechanic characterization of the composites which will be done through the measurement of strenght in a three point bending test. Besides, the break surface will be observed in the flasks through an electron microscope in order to fix the Silicon Carbide anchorage in the epoxi resin. It will be tried to improve the preparation process of three point bending test specimens in order to achieve a correct beginning of crack before the experiment. Finally, with the obtained experimental results could be removed some conclusions, which applied to the researchs on this subject open up a range of possibilities and applications on many industrial processes.
The engineering applications need a specific material, so composites are the solution. The best properties of some materials are exploited to obtain a single material which satisfies a concrete necessity. This research analyzes some influence parameters in the behaviour of the polymeric materials, specifically for the epoxy resins. The variables to studying are the following: · Silicon carbide (SiC) particles proportion as reinforcement in polymeric materials. · Coatting the SiC particles in order to improve better adhesión between the matrix and them. · The sort of specimens used in each test according to the selected guideline. The theoretical part will consist of in the calculate of the resilience and energy values on the break of the material using the equations in accordance with the law currently in force and the results of the test and at the same time an interpretation of the said regulation in order to carry out it. The experimental part of the projection will be occupy the mechanic characterization of the composites which will be done through the measurement of strenght in a three point bending test. Besides, the break surface will be observed in the flasks through an electron microscope in order to fix the Silicon Carbide anchorage in the epoxi resin. It will be tried to improve the preparation process of three point bending test specimens in order to achieve a correct beginning of crack before the experiment. Finally, with the obtained experimental results could be removed some conclusions, which applied to the researchs on this subject open up a range of possibilities and applications on many industrial processes.
Description
Keywords
Ensayo de materiales, Resistencia de materiales, Resinas epoxi