Caracterización de un material compuesto para aislamiento acústico de ventanas de unidades habitacionales.

Abstract

The purpose of this work was to elaborate and characterize a composite material as acoustic insulation that can be used in the future in windows of houses as blinds focused on the need to reduce the acoustic pollution generated by external noise that affects the inhabitants of the neighboring houses. For the base material, polyester resin was chosen for its good properties and low cost, and as reinforcement a material with good acoustic insulation properties was sought that can be recycled and reused in order to help in a certain way with the environmental impact, determining these characteristics in the wine cork, which was crushed to obtain 4 sizes of grains (B, C, D and E), thus obtaining 4 types of composite materials. For the mechanical characterization, traction, bending and impact tests were carried out, a test protocol for acoustic tests was also elaborated, thus verifying that the combination of polyester matrix and wine cork contribute greatly to isolate noise, obtaining the best result of sound attenuation (> 30dB) at mid and high frequencies in the composite material with grain size C.