Eventos Anais de eventos
COBEF 2023
12th Brazilian Congress on Manufacturing Engineering
INFLUENCE OF THE GRANULOMETRY ON THE MECHANICAL PROPERTIES TO THE TENSILE IN POLYMER COMPOSITES REINFORCED WITH LIMESTONE POWDER
Submission Author:
Moisés Medeiros , RN
Co-Authors:
Moisés Medeiros, Paulo Neto, Ana Claudia de Melo Caldas Batista
Presenter: Moisés Medeiros
doi://10.26678/ABCM.COBEF2023.COF23-0497
Abstract
With the growing advance of society, it is increasingly necessary to optimize and preserve the environment and the natural resources of the planet we live on. Thus, several fields of research and work try to solve this recurring problem of man with the environment. Searching for a way to minimize these impacts and, at the same time, to use rejects and materials that previously had an irrelevant role, the composite materials appear, with the capacity of combining two distinct materials to obtain a new one with improved properties in comparison to each component isolated. The present work aimed to produce and analyze the influence of the different granulometries on the final properties of a composite with polymer matrix of polyester (particulate composite) having as reinforcement limestone powder obtained from the quarries of the western region of Rio Grande do Norte. Five sets of specimens were fabricated to be analyzed: specimens with 100% of polyester resin (for comparison after the insertion of the limestone powder), and four sets of particulate specimens using polyester resin as the matrix and 10% of limestone with different granulometries (lower than 53 μm; between 53 μm and 90 μm; between 90 μm and 180 μm; and with the granulometry as obtained, in other words, without controlling the grain size). For this work, the norm ASTM D 638 was used with the purpose of performing the mechanical characterization to the tensile of the material produced. In addition, the norm ASTM D 792 was used to determine the volumetric density of the composite. It was observed that the difference of granulometry of the mineral directly influenced the mechanical properties of the final material, highlighting that the composite with granulometry <53 μm obtained tensile strength of 38,97 MPa, and the composite with granulometry between 90 μm and 180 μm was the most rigid, with an elasticity modulus of 1,09 GPa.
Keywords
polyester resin, Tensile, Granulometry, Limestone
