利用废弃聚酯制备聚氨酯泡沫

Synthesis of polyurethane foam using waste polyester

为减少废弃聚酯对环境的污染,提高废弃资源的利用率,以废弃聚酯、乙二醇、多异氰酸酯等为原料,采用乙二醇醇解工艺降解聚酯,制得对苯二甲酸乙二醇酯(BHET)单体,并用其制备聚氨酯泡沫。探讨了泡沫催化剂和发泡剂等辅助原料对硬质聚氨酯泡沫压缩性能和密度的影响。结果表明,当原料配比一定,催化剂用量为0.32 g,发泡剂用量为0.8 g时,得到的聚氨酯泡沫有较高的压缩强度和较低的密度。采用傅里叶变换红外光谱仪和视频变焦显微镜等测试仪器对产物进行定性分析。

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.