中国塑料 ›› 2019, Vol. 33 ›› Issue (11): 28-33.DOI: 10.19491/j.issn.1001-9278.2019.11.006

• 材料与性能 • 上一篇    下一篇

1,4环己烷二甲醇改性PBT共聚酯流变性能研究

于浩淼,陈延明,王立岩,吴全才   

  1. 沈阳工业大学石油化工学院
  • 收稿日期:2019-06-26 修回日期:2019-07-31 出版日期:2019-11-26 发布日期:2019-12-27

Study on Rheological Properties of PBT-based Copolyester Modified with 1,4-Cyclohexanedimethanol

YU Haomiao,CHEN Yanming,WANG Liyan,WU Quancai   

  1. College of Petrochemical Engineering,Shenyang University of TechnologyLiaoyang 111003,China
  • Received:2019-06-26 Revised:2019-07-31 Online:2019-11-26 Published:2019-12-27

摘要: 以1, 4环己烷二甲醇(CHDM)为第三单体,对苯二甲酸(PTA)和1, 4丁二醇(BDO)为基本原料,在熔融缩聚釜中制得不同第三单体含量的聚对苯二甲酸丁二醇酯1,4环己二甲醇酯(PBTG)。通过挤出式毛细管流变仪和旋转流变仪对PBTG共聚酯的流变性能进行了分析测试。结果表明,PBTG共聚酯为假塑性非牛顿流体,其非牛顿指数均小于1;第三单体CHDM的加入增加了聚对苯二甲酸丁二酯的动态黏度。

关键词: 聚对苯二甲酸丁二酯, 1, 4-环己烷二甲醇, 流变性能

Abstract: A type of PBT-based copolyester was synthesized by using terephthalic acid and 1,4-butanediol as base materials and 1,4-cyclohexanedimethanol (CHDM) as a comonomer, and its rheological properties were measured by capillary rheometer and rotary rheometer. The results indicated that the resultant copolyester exhibited a pseudoplastic non-Newtonian fluid behavior with a non-Newtonian index less than one. The dynamic viscosity of the copolyester was found to increase with the incorporation of CHDM.

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