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

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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

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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