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As a strategic raw material for fundamental industries, rubber materials occupy an irreplaceable position in social development owing to their distinctive properties such as elasticity, sealing capacity, wear resistance, and insulation. Globally, approximately 70% of natural rubber is utilized in tire manufacturing, thereby forming the backbone of the extensive supply chain within the automotive industry. Key components in the transportation sector, including tires, seals, and damping materials for automobiles, aircraft, ships, and high-speed trains, depend on advanced gas barrier rubber technologies. The advent of new energy vehicles has further heightened the demand for high-performance rubber materials with enhanced gas barrier properties, particularly those exhibiting superior high-temperature stability and corrosion resistance. This review first elaborates on the mechanism underlying gas permeation through rubber matrices and analyzes the critical factors influencing the gas barrier performance of such materials. Subsequently, the latest advancements in traditional gas barrier rubber materials were systematically studied via a comparative analysis of unfilled and filled systems. Finally, the persistent challenges and unresolved issues pertaining to the optimization of barrier properties in rubber materials has been discussed, offering crucial insights for future research directions. The permeation mechanism and influencing factors of gases within rubber materials has been introduced. Through a systematic analysis of diverse barrier-enhancement strategies, the recent advancements in barrier performance of rubber-based composites was comprehensively reviewed.
Song et al. (Tue,) studied this question.