Ingeniería Mecánica

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Subject: search.filters.subject.CAUCHO SBR

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    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.
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    Análisis del material vulcanizado caucho estireno-butadieno 1502 con dióxido de silicio amorfo y su incidencia en la resistencia a la abrasión, fatiga por flexión y dureza, mediante la utilizaciòn de normas NTE-INEN-ISO, en la empresa Carvifactory CIA LTDA
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Carpio Vega, Mario Alexander; Paredes Salinas, Juan Gilberto
    In the present investigation, the mechanical behavior of a compression vulcanized composite material, consisting of Rubber SBR 1502, Amorphous Silicon Dioxide and other compounds was evaluated. In addition, through the use of NTE-INEN-ISO 4649, 20344 and 868 standards, Abrasion Resistance, Flexural Fatigue and Hardness tests were performed, respectively. For this, it was necessary to develop different specimens, manufactured under these 3 same standards. Once all the trial data were obtained, they were tabulated and analyzed using two statistical techniques: Factorial Design and Response Surface Methodology (RSM) These two statistical strategies allowed validating all the data obtained, defining the significant effects and their influence on the mechanical properties evaluated and optimize each of the response variables according to the NTE-INEN-ISO 20345, 20346 and 20347 requirement standards, which specify the minimum, maximum or range values for each property evaluated. After analyzing all the data, it is observed that the RSM is the most appropriate tool to study the effects of the factors on the variables in this investigation. Thus, by means of the composite desirability function of 0.858, it is defined that the combination that allows keeping within the 3 requirements is a material composed of 100 PHR of Rubber SBR 1502 + 44 PHR Amorphous Silicon Dioxide + 30 PHR of the others compounds, where an Abrasion Resistance of 136.5271 mm3 was obtained, an Incision Growth of 0.4034 mm and a Hardness of 66.87 SHORE A.