Synthesis of polyurethane foam using waste polyester

In order to reduce the pollution produced by polyester fiber wastes and promote resource recycling use,ethylene terephthalate(BHET) monomers were prepared with waste polyester,glycol,polyisocyanate and so on through degrading them by alcoholysis technology.Rigid polyurethane foam was made with BHET monomers.The influence of auxiliary materials,such as foam catalyst and foaming agent,on the compression performance and density of rigid polyurethane was discussed.The results demonstrated that when the proportion of raw materials is fixed,catalyst is 0.32 g and foaming agent is 0.8 g,polyurethane foam obtained has higher compressive strength and lower density.The products were characterized by IR,and optical microscope.