The use of sustainable sound absorbing foam recycling microplastics in sound insulation

Today, reducing the negative impact produced by human activities, has become a primary need. To this end, an innovative foam process production has been developed including the reuse of waste elements in order to obtain thermal and acoustic insulating foams. The determination of the acoustic parameters carried out by laboratory tests (sound absorption coefficient, tortuosity, characteristic viscous length, characteristic thermal length, porosity and flow resistivity) have enabled the implementation of calculation methods designed to predict the transmission loss of building partitions that internally contain this product. Analyses show interesting results that can be achieved with reduced thicknesses and, above all, gains in terms of creating eco-sustainable buildings. © "Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021. All rights reserved.