Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Properties of Silica-SBR Compounds Using Cellulose Dispersant Applicable to Tire Tread Rubber

  • Kim, Jung Soo (Human Convergence Technology R&D department, Korea Institute of Industrial Technology (KITECH)) ;
  • Kim, Dong Hyun (Human Convergence Technology R&D department, Korea Institute of Industrial Technology (KITECH))
  • Received : 2020.06.20
  • Accepted : 2020.07.05
  • Published : 2020.09.30
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Abstract

Silica-styrene butadiene rubber (Silica-SBR) compounds have been used in the preparation of tire treads. The silica dispersibility of silica-SBR compounds is related to the processability, mechanical properties, and wear resistance of tires. Recently, in order to improve the silica dispersibility of the silica-SBR compounds, the wet masterbatch (WMB) process was introduced, which is a method of mixing rubber in the water phase. We aimed to improve the silica dispersibility of the silica-SBR compounds by preparing a silica dispersant applicable to the WMB process. For this purpose, cellulose, 2-hydroxyethyl cellulose, and cellulose acetate were employed as a silica dispersant. The silica dispersibility of the compounds was measured by a moving die rheometer. Improvement in the processability of silica-SBR compounds was evaluated by the Mooney viscometer. The wear resistance of silica-SBR compounds using a cellulose dispersant was improved by up to 29%.

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