Mapeamento de fluxo de valor para reaproveitamento de aparas

Abstract

Polyurethane is among the most important plastics for being a modern product and a versatile material that can be used in several segments. The flexible foams of polyurethane are present in our daily lives as in mattresses, couch, upholstery and acoustic panels. The usability of foams is great and with time are discarded on the streets, vacant lots or sent to landfills. In this study it was selected flexible foams, transformed into flakes and mixed with a new mixture of polyol and isocyanate. This procedure allowed to obtain a new foam ready to be used in applications where it is usually found. The objective is to study a flexible foam recycling process of PU, seeking an answer for this question: Does the flexible foam discarded after use have any chance of reuse? The hypothesis is that it is possible to recycle since it is compatible and ideal to the material. The flakes mixture with a new system polyol + isocyanate allowed the achievement which, although it expanded less than the pure system polyol + isocyanate, remained the compatibility and flexibility. The study proved to be a viable alternative to the destination of flexible foams of PU, which are normally discarded harmfully through the environment. The result of the recycled foam was positive for producing a new foam composed of flakes dispersed in the new polyol and isocyanate. Keywords: Polyurethane, Recycling, Flexible Foam

Polyurethane is among the most important plastics for being a modern product and a versatile material that can be used in several segments. The flexible foams of polyurethane are present in our daily lives as in mattresses, couch, upholstery and acoustic panels. The usability of foams is great and with time are discarded on the streets, vacant lots or sent to landfills. In this study it was selected flexible foams, transformed into flakes and mixed with a new mixture of polyol and isocyanate. This procedure allowed to obtain a new foam ready to be used in applications where it is usually found. The objective is to study a flexible foam recycling process of PU, seeking an answer for this question: Does the flexible foam discarded after use have any chance of reuse? The hypothesis is that it is possible to recycle since it is compatible and ideal to the material. The flakes mixture with a new system polyol + isocyanate allowed the achievement which, although it expanded less than the pure system polyol + isocyanate, remained the compatibility and flexibility. The study proved to be a viable alternative to the destination of flexible foams of PU, which are normally discarded harmfully through the environment. The result of the recycled foam was positive for producing a new foam composed of flakes dispersed in the new polyol and isocyanate. Keywords: Polyurethane, Recycling, Flexible Foam