聚烯烃类弹性体--现状与进展

State-of-the-art and research progress of polyolefin-based elastomer

综述了聚烯烃类弹性体的国内外发展现状与研究进展,介绍了二元乙丙胶(EPM)、三元乙丙胶(EPDM)、茂金属三元乙丙胶(m EPDM)等乙丙弹性体,及乙烯/α-烯烃无规共聚物弹性体(POE)和嵌段共聚物弹性体(OBC)等的主要生产商、产品商标、牌号及性能特点,以及合成工艺与催化剂体系的发展。指出POE、OBC类热塑性弹性体不仅具有聚烯烃类弹性体卓越的力学性能,而且成型加工简便、可回收使用,发展迅速。茂金属催化剂具有活性高、对α-烯烃共聚能力强和单一活性中心的优点。我国目前尚不能进行m EPDM、POE、OBC等性能更为优异、利润更为丰厚的聚烯烃弹性体和热塑性弹性体的生产。要进行这些产品的自主开发,必须加强对耐高温茂金属催化剂和烯烃高温溶液共聚工艺的研究。

In this review,state-of-the-art technology of polyolefin-based elastomer manufacture,including major producers and product trademarks,grades and properties were summarized.Research and developments on production process and catalyst system for the ethylene-propylene binary and ternary rubbers(EPM,EPDM,mEPDM),the poly(ethylene-co-α-olefin)elastomer(POE)and the poly(ethylene-block-α-olefin)elastomer(OBC)were also introduced.It has been pointed out that the thermoplastic elastomer,such as POE and OBC,and the polyolefin plastomer not only had excellent mechanical and physical properties of polyolefin-based elastomer,but also was easy molding and processing,and can be recycled and reused.And the metallocene catalyst had the advantages of high activity,good ability to catalyze copolymerization withα-olefin,and single active site.In order to independently develop the polyolefin-based elastomer,the thermoplastic elastomer and plastomer with more excellent performance and more profitable,such as mEPDM,POE and OBC et al,the researches on the metallocene catalyst with high temperature adaptability and the high temperature solution polymerization process must be strengthened.