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Modeling of Shear Rheological Behavior of Uncured Rubber Melt

Authors
  • Yang, Hengxiao1
  • Mo, Qimian1
  • Lu, Hengyu
  • Zhang, Shixun2
  • Cao, Wei2
  • Shen, Changyu2
  • 1 Zhengzhou University, Henan, 450002 , (China)
  • 2 Zhengzhou University, Henan, 450002, Zhengzhou, Henan, 450002 , (China)
Type
Published Article
Journal
Applied Rheology
Publisher
De Gruyter Open
Publication Date
Dec 31, 2020
Volume
30
Issue
1
Pages
130–137
Identifiers
DOI: 10.1515/arh-2020-0111
Source
De Gruyter
Keywords
License
Green

Abstract

To describe uncured rubber melt flow, a modified Phan–Thien–Tanner (PTT) model was proposed to characterize the rheological behavior and a viscoelastic one-dimensional flow theory was established in terms of incompressible fluid. The corresponding numerical method was constructed to determine the solution. Rotational rheological experiments were conducted to validate the proposed model. The influence of the parameters in the constitutive model was investigated by comparing the calculated and experimental viscosity to determine the most suitable parameters. The uncured rubber viscosity was 3–4 orders larger than that of plastic and did not have a visible Newtonian region. Compared with the Cross-Williams-Landel-Ferry (Cross-WLF) and original PTT models, the modified PTT model can describe the rheological characteristics in the entire shear-rate region if the parameters are set correctly.

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