Estudio Comparativo de las propiedades mecánicas de residuos de polipropileno obtenido por extrusión y reforzado con fibras de Abacá y de Plátano.

Abstract

Through the comparative study of the mechanical properties of polypropylene (PP) residues obtained by extrusion and reinforced with abaca and banana fibers, the influence of the type of texture and the concentration of vegetable fiber on the polypropylene plastic matrix was determined. The application of a phthalic anhydride coupling agent was performed to improve the homogeneity of the mixture. Samples were made with a variation of 10, 20% by weight of fiber with PP and treatments with the use of a coupling agent applied at the concentrations, as mentioned earlier, making a total of nine samples, including recycled PP. The specimens were obtained in the single screw extruder of the Unitary Operations Laboratory of the Polytechnic School of Chimborazo, working at a temperature of 175 C in the areas of dosage, transition, and 150 "C in the feeding zone of the extruder screw, with a screw speed of 500 rpm. Once the tensile, flexural and compression resistance tests have been carried out on the recycled and grafted PP specimens. The incidence of fiber in the results compared to the PP is notorious. in tensile strength tests, the creep stress improves 22% when working with abaca fiber. In flexural tests, the properties improve when working with 20% fiber and the use of a coupling.