Influencia de la exposición a la intemperie en el desgaste de un material compuesto de látex y partículas de gránulo de caucho reciclado

Abstract

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.