Correlation between Crosslinking Molecular Structure and Physical Performance of Acrylic Rubber = Correlation between Crosslinking Molecular Structure and Physical Performance of Acrylic Rubber

다국어 초록 (Multilingual Abstract)

Acrylic rubber, also known as alkyl acrylate copolymer (ACM), offers exceptional heat resistance, second only to silicone rubber, making it ideal for extreme-environment applications. The performance grades of ACM vary based on cross-linking methods, which are influenced by the strength of the cross-link bonds. Among these methods, the carboxylic acid-amine cross-linking system stands out for its superior heat resistance, making it ideal for high-temperature sealing components in automotive engines. In this study, we investigated the effects of bridge-forming molecular structures, specifically aliphatic, aromatic, and alicyclic diamines, on the cross-link density, baseline mechanical properties, and durability of ACM rubber within this cross-linking system. Our findings indicate that the cross-linking molecular structure significantly influences the deformation and recovery characteristics of highly entangled chains under external stresses. This research provides valuable insights into material development for industrial applications to meet the demands for enhanced durability and performance under extreme conditions.