王勇,王杰,张须臻,钱军,邢喜全,王秀华
WANG Yong,WANG Jie,ZHANG Xu-zhen,QIAN Jun,XING Xi-quan,WANG Xiu-hua

• 1:浙江理工大学纺织纤维材料与加工技术国家地方联合工程实验室
• 2:余姚大发化纤有限公司

摘要(Abstract)：

探索了乙二醇/二甘醇联合醇解废聚酯(PET)工艺,并对醇解产物的性能进行了表征。结果表明:废PET与总二元醇质量比1∶2～1∶3、二甘醇(DEG)物质的量分数10%(占PET结构单元)、反应温度200℃、催化剂质量分数0.1%、反应时间1～1.5 h为高效的醇解反应条件。通过DSC、TG、FTIR、~1H NMR等测试手段对醇解产物进行了分析表征,得出分离提纯后的醇解产物为对苯二甲酸双羟乙酯(BHET)。
The alcoholysis technology of waste polyester(PET) using ethylene glycol/diethylene glycol(DEG)as compound alcoholysis agent was investigated, and the properties of the alcoholysis products were charac-terized. The results showed that when the mass ratio of PET to total glycol was 1∶2～1∶3, the DEG mole frac-tion was 10%(accounting for the structural unit of PET), the reaction temperature was 200 ℃, the mass frac-tion of catalyst was 0.1%, reaction time was 1～1.5 h, PET could achieve an efficient alcoholysis reaction. Thealconolysis product was analyzed with DSC, TG, FTIR,~1H NMR and other test methods, and it was concludedthat the alcoholysis product after separation and purification was 2-hydroxyethyl terephthalate(BHET).

关键词(KeyWords)： 废聚酯;醇解;二甘醇;乙二醇
waste polyester;glycolysis;diethylene glycol;ethylene glycol

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFB0302900)

作者(Author): 王勇,王杰,张须臻,钱军,邢喜全,王秀华
WANG Yong,WANG Jie,ZHANG Xu-zhen,QIAN Jun,XING Xi-quan,WANG Xiu-hua

DOI: 10.16090/j.cnki.hcxw.2021.05.001

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