Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of Silica Nanoparticles on Tear Strength of CR Compounds: A Comparison Study between the ASTM D470 and DIN VDE 0472-613

  • Changsin Park (Department of Automotive Engineering, Honam University) ;
  • Byeong-Rea Son (Department of Automotive Engineering, Honam University) ;
  • Gi-Bbeum Lee (Department of Polymer-Nano Science and Technology, Jeonbuk National University) ;
  • Changwoon Nah (Department of Polymer-Nano Science and Technology, Jeonbuk National University)
  • Received : 2024.01.31
  • Accepted : 2024.03.15
  • Published : 2024.03.31
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Abstract

In this study, the effects of the type and content of silica on the mechanical and tear properties of chloroprene rubber (CR), which is mainly used as a jacket material for mining cables, were studied. The crosslinking density (ΔM) and reinforcing factor (αf) defined using cure characteristics increased with increasing silica content, whereas the cure rate decreased. The hardness, tensile strength, and modulus of the CR compounds increased depending on the silica content and structural development. The reinforcing behavior of the silica-filled CR compounds according to the silica type and content showed the best fit with the Thomas equation of the predictive model. Tear strength was evaluated using two standard test methods, ASTM D470 and DIN VDE 0472-613, and the results were compared. The tear strength increased as the silica content increased, regardless of the test method, and the different tear strengths obtained by the two standard test methods showed a linear relationship with each other, indicating a high correlation.

Keywords

Acknowledgement

This study was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2021RIS-002).

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