USE OF FOAM POLYURETHANE WASTE IN THE PRODUCTION OF SHOE BOTTOM PARTS
Variants of technologies for the production of materials and products for shoe bottoms using polyurethane wastes were analyzed. They are based on fairly long-term studies by Vitebsk state technological University staff on this issue. The main developments are given that make it possible to obtain composite materials by processing waste polyurethanes. Despite the significant savings in the polyurethane foam composition, the problem of the formation and use of these wastes is still relevant. A polymer matrix was obtained with a minimum amount of ingredients: a plasticizer and a stabilizer on the base on an analysis of the technologies for the production of materials and products for shoe bottoms using waste polyurethane foams and an analysis of the ingredients of the resulting products,. The production technology included waste sorting, crushing, mixing with ingredients, granulation and casting. The materials were obtained as a result of the testing, tests of their physicomechanical and operational properties were carried out, which showed a sufficient level of their quality, which allows us to recommend them in the manufacturing of shoes. It is supposed to obtain materials of various structure: monolithic, porous and fiber-filled based on them in the future.