Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (6): 675-684.DOI: 10.19894/j.issn.1000-0518.200323

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Cluster Analysis of Correlation Between Rubber Carbon Black Filling and Yeoh Model Parameters

DU Kang1,2, ZHOU Heng-Wei1, DING Ming-Ming1,2*, YE Feng2*, SHI Tong-Fei1,2   

  1. 1Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics, College of Physical Science and Technology, Yili Normal University, Yining 835000, China
    2State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2020-10-29 Revised:2021-01-07 Published:2021-06-01 Online:2021-08-01

Abstract: In order to explore the correlation between carbon black filling amount and Yeoh model parameters, this paper proposes a classification method of different filling amounts by cluster analysis. Based on the three-parameter Yeoh model, the uniaxial tensile stress-strain curves of carbon black filled rubbers are fitted, and three parameters C10, C20 and C30 are obtained. The cluster method is used to classify the parameters unsupervised, and the number of clusters is set at 3~8 to explore the influence of different categories on the results. The results show that the accuracy of all categories is above 60%, and the filling fraction is the most uniform when clustering into five categories, and the accuracy rate is up to 84%. The feasibility of using cluster analysis to classify different carbon black filling amounts is verified, and the parameters of the constitutive model can be predicted and the corresponding stress-strain curve can be obtained when the carbon black content is fixed.

Key words: Carbon black-extended rubber, Superelasticity, Constitutive model, Cluster analysis

CLC Number: