Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of Cross-Linking Characteristic on the Physical Properties and Storage Stability of Acrylic Rubber

  • Seong-Guk Bae (Elastic Composite Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Min-Jun Gim (Chemical Materials R&D Center, Korea Automotive Technology Institute) ;
  • Woong Kim (Elastic Composite Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Min-Keun Oh (Chemical Materials R&D Center, Korea Automotive Technology Institute) ;
  • Ju-Ho Yun (Chemical Materials R&D Center, Korea Automotive Technology Institute) ;
  • Jung-Soo Kim (Elastic Composite Research Division, Korea Institute of Footwear & Leather Technology)
  • Received : 2023.09.12
  • Accepted : 2023.09.22
  • Published : 2023.09.30
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Abstract

Polyacrylic rubber (ACM) is well known for its excellent heat resistance and chemical stability. Additionally, its performance can be readily manipulated by modifying its functional groups, rendering it highly attractive to various industries. However, extreme climate changes have necessitated an expansion of the operating temperature range and lifespan of ACM products. This requires the optimization of both the compounding process and functional-group design. Hence, we investigated the relationship between the cross-linking system and mechanical properties of an ACM with a carboxylic cure site. The crosslink density is determined by chemical kinetics according to the structure of additives, such as diamine crosslinkers and guanidine accelerators. This interaction enables the manipulation of the scotch time and mechanical properties of the compound. This fundamental study on the correlation analysis between cross-linking systems, physical properties, and storage stability can provide a foundation for material research aimed at satisfying the increasingly demanding service conditions of rubber products.

Keywords

Acknowledgement

This research was supported by the Ministry of Trade, Industry, and Energy Grant funded by the Korean Government [Project Number 20010403].

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