Rheology of Aromatic Copolyesters in the Liquid Crystalline Melts

Meirong Huang; Xingui Li

doi:10.14028/j.cnki.1003-3726.1991.04.005

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Rheology of Aromatic Copolyesters in the Liquid Crystalline Melts

更新时间：2022-09-18

- Rheology of Aromatic Copolyesters in the Liquid Crystalline Melts
- Polymer Bulletin Vol. 4, Issue 4, Pages: 222-230(1991)
- 作者机构：
  
  1.天津纺织工学院纺化系，天津，300160
  2.天津纺织工学院膜分离工程研究所，天津，300160
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.1991.04.005
  CLC：
- Published：1991，
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Meirong Huang, Xingui Li. Rheology of Aromatic Copolyesters in the Liquid Crystalline Melts. [J]. Polymer Bulletin 4(4):222-230(1991)
DOI：

Meirong Huang, Xingui Li. Rheology of Aromatic Copolyesters in the Liquid Crystalline Melts. [J]. Polymer Bulletin 4(4):222-230(1991) DOI： 10.14028/j.cnki.1003-3726.1991.04.005.

摘要

较全面综述了热致液晶性芳香族共聚酯(TLCP)熔体流变学的最新研究成就

指出TLCP熔体具有许多特征流变行为

存在屈服应力、低粘度、负第一法向应力差、孔口收缩、长松弛时间及它们显著的剪切速率(振动频率)、温度、时间和热历史的依赖性。

Abstract

New results and the frontier problems of the rheology of aromatic copolyesters in the liquid crystalline melts are reviewed. It is demonstrated that the copolyester liquid crystalline melts possess a lot of chararteristic rheological behaviour: exhibiting yield stress

lower viscosity

negative primary normal-stress difference

extra date contraction and longer relaxation time which markedly depend on shear rate (oscillatory frequency)

temperature

time and thermal history.

关键词

共聚酯液晶熔体稳态流变学动态流变学瞬态流变学相变流变学

Keywords

Copolyester liquid crystalline meltsteady state rheologydynamic rheologytransient rheologyrheology of phase transition

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Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University

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