Research progress of waste polyurethane treatment technology
90％ of waste refrigerator freezer foam is PU hard foam,and the rest is soft foam,generally thermosetting resin.According to statistics,about 30 tons of waste polyurethane foam are produced for every 10000 refrigerator freez-ers recycled.At present,there are three main methods to recycle polyurethane:physical method,chemical method and energy method.From the perspective of process and actual situation,the physical treatment of polyurethane foam is more in line with the actual situation,and the chemical treatment of polyurethane foam can be considered.
waste polyurethanePhysical methodChemical methodEnergy Law
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