Ingeniería Mecánica

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900

Browse

Filters

2017 - 201912020 - 20214

Settings

Subject: search.filters.subject.CAUCHO RECICLADO

Search Results

Now showing 1 - 5 of 5
  • No Thumbnail Available
    Item
    Influencia de la exposición a la intemperie en el desgaste de un material compuesto de látex y partículas de gránulo de caucho reciclado
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2021-03) Criollo Rojas, Jennifer Ashley; Pérez Salinas, Cristian Fabian
    The development of this research is focused on the material composed of the matrix of latex and recycled rubber granule particles (PGCR) as reinforcement, since this composite has optimal peculiarities for the elaboration of floors. For the development of this study, the variation in the percentage of reinforcement was taken into account in such a way that, it is possible to show which of the volumetric configurations has the best properties of Wear and Hardness. The tests were applied according to the specifications of the wear standard ISO 9352, Hardness ASTM- D2240 and ASTM D 1435 for outdoor exposure. Through the application of experiment design (DOE), a complete overall factorial design was made from which six volumetric configurations were obtained with a reinforcement variation of twenty, thirty and forty percent. The material behaviour was then analysed using the Taber wear test, measuring Shore D hardness using ISO and ASTM standards respectively. At the end of the execution of the tests by means of tables and graphs it is evident that the percentage of wear for the three reinforcement variations is minimal, yet the statistical analysis shows that the exposure time has an influence on the wear rate and that the volumetric configuration that best fits a real flooring application is 80 percent Latex (matrix) and 20 percent PGCR (reinforcement) , at zero days of exposure as it has less wear and greater hardness.
  • No Thumbnail Available
    Item
    Caracterización del comportamiento mecánico de un material compuesto a partir de matriz de poliuretano monocomponente, reforzado con gránulo de caucho reciclado y fibra de abacá como material alternativo, para aplicaciones industriales
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2021-02) Urquizo Vaca, Gabriel Alejandro; Paredes Salinas, Juan Gilberto
    The objective of this research is the characterization of a new material from recycled rubber, abaca fiber and resin, as an alternative material for industrial applications, different volumetric configurations of the composite material were taken to determine the best combination of mechanical properties, tensile, compression, hardness and wear tests were performed, the specimens were obtained in tensile standards NTE INEN 1165, compression NTE INEN 889, hardness NTE INEN 887 and wear ISO 4649:2010. Using the design of experiments (DOE) method has been made 13 volumetric configurations of resin with rubber granules and abaca fiber in different sizes of short and long fiber were made, with the data we proceeded to extract the specimens that were sent for the different tensile, compression, hardness and wear tests, thus obtaining the best mechanical behavior of the configurations made of the mixture of polyurethane resin with rubber and abaca fiber. With the results of the tests carried out, the best volumetric configuration of short fiber with 10 percent resin, abaca: 25 percent and 65 percent rubber was obtained. In this compound, the tensile strength was 2.08 Mpa, the compressive strength was 58.798 Mpa, its hardness was 86 Shore A and the wear reached a value of 42.22, which certifies that this combination is accepted as an alternative material for industrial applications.
  • No Thumbnail Available
    Item
    Análisis del coeficiente de fricción e índice de inflamabilidad de un material compuesto a partir de matriz elastomérica de látex reforzado con gránulo de caucho reciclado
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-08) Bautista Velasco, Edison Fabricio; Pérez Salinas, Cristian Fabián
    The present experimental work aims to analyze the coefficient of friction (static and dynamic) and flammability index of a composite material made from elastomeric latex matrix reinforced with recycled rubber granule. Composite specimens with volumetric composition of 60 percent Synthetic latex and 40 percent Recycled rubber granule (particle size of 0.841 mm) were made, and simple material specimens with 100 percent synthetic latex configuration were also made. In addition, aluminum molds were manufactured with the purpose of facilitating the vulcanization process required by the samples. Friction tests (Use Guide for English XL Variable Incidence Tribometer) and flammability were performed under regulations (ISO 3795). Friction tests were carried out on the two materials on three types of surfaces under dry and wet conditions, the values were taken in the 4 directions (north, south, east, west). As a result, the factor with the highest incidence on the value of static and dynamic friction coefficients is the “Condition”. In the case of the “Material” factor, the coefficients of friction of greater value were for the material with a 100 percent synthetic latex composition. While in the "Surface" factor the wood type obtained higher values compared to the other two. On the other hand, it was determined that the “Orientation” factor has no impact on the measurement of friction coefficients. Finally, material flammability tests were performed, for the composite material the burn rate had a value of 9.23 mm / min. While, for the simple material the burn rate was 7.94 mm / min.
  • No Thumbnail Available
    Item
    Estudio de las propiedades mecánicas de la lámina para pista atlética a partir de caucho reciclado utilizando poliuretano
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) LLerena Pico, Diego Andrés; Lascano Moreta, Alejandra Marlene
    In the research project, the analysis of the mechanical properties at different volumetric configurations of a composite material that is constituted by a polyurethane matrix and reinforced with recycled rubber particles was carried out, this in order to achieve a material that has excellent characteristics for the manufacture of sheets of athletic tracks, replacing the usual manufacturing materials with composites at low cost and friendly with the environment. The work proposed the preparation of a composite material with polyurethane and rubber granules at different volumetric fractions ranging from 70 percent polyurethane-30 percent rubber particles, 60 percent polyurethane-40 percent particles of rubber, 50 percent polyurethane-50 percent rubber particles, with a rubber particle size of 0.05 mm-1 mm, where the molds and probes used in the tests were made with the dimensional characteristics established in the ASTM standard, which will be used for ASTM D3039-2015 traction, ASTM D695 compression and ASTM D2240-15 hardness. The obtaining of optimal values was obtained to achieve the mechanical properties necessary for the realization of the composite material, where the volumetric fraction that has the best mechanical characteristics is that of 70 percent polyurethane-30 percent of rubber particles, with a maximum effort to tensile of 12.28 MPa, modulus of tensile elasticity of 282.69 MPa, elongation of 8.08 percent, maximum compressive stress of 28.4 MPa, creep stress 23 MPa, deformation of 37, 11 percent, modulus of elasticity to compression of 76.51 MPa and Shore D hardness 72.75
  • No Thumbnail Available
    Item
    Análisis de las características mecánicas de un material compuesto a partir de matriz elastomérica de látex reforzado con gránulo de caucho reciclado para elaboración de pisos
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017-08) Palacios Pérez, Franco Giovanny; Vaca Ortega, Wilson Henry
    This investigation work is about analyzing the mechanic characteristics of different configurations of a compound material of elastomeric matrix of reinforced latex with granule of recycled rubber, with the purpose of obtaining a material with optimum mechanic characteristics to elaborate floors. It was generated different configurations of compound material, varying the size of the reinforcement and the volumetric composition of matrix and reinforcement. It was elaborated the standard samples, mixing the material according to the configurations and placing it in aluminum molds which help up to the vulcanization process of the samples. It was conducted the required tests for the mechanic characterization, which are: traction (NTE INEN 1165), compression (NTE INEN 889) and hardness (NTE INEN 887). The results because of the tests are tabulated, averaged, charted and compared. With the corresponding analysis it was determined that the material with the optimum mechanic characteristics for the elaboration of floors is the A3 type which owns a granule size of 0-0,841mm o Tamiz #20 and a volumetric composition of 60% matrix (latex) and 40% reinforcement (recycled granule of rubber). To this material will carry out a test of flammability (ASTM D635 -14) to know its characteristics in case of fire.