锑系和钛系聚酯的固相缩聚研究  

Study on solid-phase thickening of polyester prepared with antimony and titanium catalysts

作　　者：周倩 朱兴松 常玉 Zhou Qian;Zhu Xingsong;Chang Yu(Research Institute of Sinopec Yizheng Chemical Fibre Co.,Ltd.,Yizheng Jiangsu 211900,China)

机构地区：[1]中国石化仪征化纤有限责任公司研究院,江苏仪征211900

出　　处：《合成技术及应用》2024年第3期12-17,共6页Synthetic Technology & Application

摘　　要：为了研究乙二醇钛对聚酯固相缩聚反应及聚酯切片性能的影响,采用小型固相缩聚装置研究了分别以乙二醇钛与乙二醇锑为催化剂制备聚酯的固相缩聚反应动力学,并对两种催化剂制备的增黏切片进行注塑试验。结果表明乙二醇钛制备的聚酯固相缩聚反应活化能为74.6 kJ/mol,高于乙二醇锑制备的聚酯的56.7 kJ/mol。采用乙二醇钛制备的增黏切片和注塑加工的瓶坯热稳性能都优于乙二醇锑制备的增黏切片和瓶坯。A small solid-phase polycondensation device was used to study the solid-phase polycondensation re-action kinetics of polyester produced using self-made novel chelating titanium catalyst and ethylene glycol antimo-ny catalyst.Tests using injection molding blow botles were performed on the chips that increased viscosity and were made using both catalysts.The findings show that the novel titanium catalyst's solid-state polycondensation re-action has an activation energy of 74.6 kJ/mol,which is greater than the antimony of ethylene glycol's 56.7 kJ/mol.When using a new titanium catalyst and injection molding process,the viscosity-increasing chips and bottle preforms have better color and thermal stability than when using ethylene glycol antimony.

关 键 词：钛催化剂 瓶用聚酯 固相缩聚 反应动力学 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]