中文摘要：

以回收的聚对苯二甲酸乙二醇酯（PET）为主要原料,通过胺醇解-酯化工艺制得用于制备聚氨酯材料的新型PET基聚酰胺-酯二元醇,探讨了原料的加入量对生成的聚酰胺-酯二元醇酸值、羟值以及黏度的影响,优化的乙醇胺、回收的PET、醋酸锌和苯酐的用量分别为12.5、27.5、0.30 g和17.5 g,以优化的原料制备的聚酰胺-酯二元醇酸值为3.76 mg（KOH）/g,羟值为386.8 mg（KOH）/g,黏度为2 044 m Pa·s。红外光谱表征了聚酰胺-酯二元醇的生成。

英文摘要：

New polyamide-ester diols are synthesized for polyurethanes by the process of aminolysis-alcoholysis- esterification using recycled polyethylene terephthalate （PET） as raw materials. The effect of dosages of PET and other raw materials on the acid values, hydroxyl values and viscosities of the obtained diols is investigated. The optimum dosages for synthesizing the polyamide-ester diols are as follows ：12. 5 g of ethanolamine,27.5 g of recycled PET,O. 30 g of catalyst zinc acetate and 17.5 g of phthalie anhydride. The acid value, hydroxyl value and viscosity of the product synthesized under the optimal conditions are 3.76 mg（ KOH）/g,386. 8 mg（ KOH）/g and 2 044 mPa＇s,respectively. IR analysis of the obtained product shows the formation of polyamide-ester diols.