乙丙橡胶的合成及其发展现状

Synthesis of ethylene-propylene rubber and its developing trend

乙丙橡胶因其结构可控、主链饱和、耐老化好等优异性能,广泛应用于汽车配件、电线电缆、建筑材料、耐热胶管、密封构件等相关领域。从催化体系和聚合工艺两方面系统介绍了合成乙丙橡胶的研究进展,重点阐述了钒系和钛系Ziegler-Natta催化剂,普通型、桥连型以及限制几何构型茂金属催化剂,负载型茂金属催化剂以及非茂催化剂及其催化乙丙共聚合的特征;同时介绍了溶液聚合、悬浮聚合以及气相聚合的工艺流程及特点,以及乙丙橡胶的若干新品种;最后展望了乙丙橡胶的未来发展趋势。

Ethylene-propylene rubber is widely used in automotive parts,wire and cable,building materials,heatresistant hoses,sealing components and other related fields due to its excellent structure,saturated main chain and good aging resistance.The catalyst and polymerization process are absolutely essential to ethylene-propylene copolymerization.In this paper,the polymerization feature of EP(D)M catalyzed by Ziegler-Natta catalyst,metallocene catalyst,supported metallocene catalyst and non-metallocene catalyst was presented.The polymerization process of solution polymerization,suspension polymerization and gas polymerization and some new species of EP(D)M was also introduced.Finally,the future development trend of EP(D)M is prospected.