魏文良,张新忠,张伟,张瑜,陈彦模
WEI Wen-liang, ZHANG Xin-zhong, ZHANG Wei, ZHANG Yu, CHEN Yan-mo (State Key Laboratory for Modification of Chemical Fiber and Polymeric Materials

• 1:东华大学纤维材料改性国家重点实验室
• 2:东华大学材料科学与工程学院

摘要(Abstract)：

以对苯二甲酸(PTA)和乙二醇(EG)为原料,用直接酯化法在1L小型聚合釜中合成聚对苯二甲酸乙二醇酯(PET)。为考察使聚酯中低聚物含量最小的最佳聚合工艺,以PET中低聚物的提取量为指标,对影响低聚物含量的重要因素——催化剂量、稳定剂量、缩聚温度、缩聚时间进行L9(3)4正交实验设计。结果显示,缩聚时间和缩聚温度的影响最大,催化剂和稳定剂的影响次之。使聚酯中低聚物含量最小的小釜聚合最佳工艺为催化剂334μg/g,稳定剂400μg/g,缩聚温度275℃,缩聚时间120min。
With PTA and EG as raw materials, PET was synthesized by direct esterification with one-liter mini-type polymerizer. To study the best polymerization process, the orthogonal design was used to investi-gate the influences of 4 factors (amount of catalyst, amount of stabilizer, condensation temperature, conden-sation time)on the content of oligomers in PET. The results showed that the maximum influence of poly-merization process was condensation temperature and condensation time, then was amount of catalyst and amount of stabilizer. The best polymerization process was optimized as followed: the amount of catalyst was 334 μg/g, the amount of stabilizer was 400 μg/g, the condensation temperature was 275 ℃, condensation time was 120 min.

关键词(KeyWords)： 聚对苯二甲酸乙二醇酯;低聚物;聚合工艺;正交实验
polyethylene terephthalate, oligomer, polymerization process, orthogonal design

Abstract:

Keywords:

基金项目(Foundation): 仪征化纤项目资助

作者(Author): 魏文良,张新忠,张伟,张瑜,陈彦模
WEI Wen-liang, ZHANG Xin-zhong, ZHANG Wei, ZHANG Yu, CHEN Yan-mo (State Key Laboratory for Modification of Chemical Fiber and Polymeric Materials

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