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以催化合金化(Catalloy)为代表的反应器颗粒技术(RGT)的开发和应用使从反应器内直接合成宽范围的聚丙烯釜内合金(聚丙烯多相共聚物)成为现实,极大地拓宽了聚丙烯的性能范围,为其更广阔的应用奠定了基础.目前,中国汽车工业的高速发展为聚丙烯釜内合金研究提供了前所未有的机遇,聚丙烯在汽车塑料中的大范围应用符合汽车材料轻量化和可回收化的发展要求.然而,中国聚丙烯釜内合金的基础和工程化研究均处于起步阶段,能否成功突破国外专利技术封锁、获得自主创新的聚丙烯釜内合金技术,面临极大挑战.通过制备高孔隙率氯化镁(MgCl2)负载齐格勒-纳塔(Ziegler-Natta)/茂金属复合催化剂,我们提出了全新概念的聚丙烯釜内合金化学方法;通过调控催化剂形态与组成、控制聚合反应和优化聚合工艺,开发了具有自主知识产权的聚丙烯釜内合金的关键技术.
The development and application of Reactor Particle Technology (RGT), typified by Catalloy, makes it possible to directly synthesize a wide range of polypropylene in-reactor alloy (polypropylene heterophasic copolymer) from the reactor, greatly expanding The range of performance of polypropylene, which laid the foundation for its broader application.Currently, the rapid development of China’s automobile industry for the polypropylene reactor alloy provides an unprecedented opportunity for polypropylene in a wide range of automotive plastics in line with automotive applications Material lightweight and recyclable development requirements.However, China polypropylene base alloy and engineering research are in the initial stage, can successfully break the blockade of foreign patent technology, access to independent innovation polypropylene reactor alloy technology, We have proposed a new concept of alloy chemistry in polypropylene autoclave through the preparation of Ziegler-Natta / metallocene composite catalyst with high porosity of magnesium chloride (MgCl2). By controlling the morphology of the catalyst With the composition, control of polymerization and optimization of polymerization process, developed with independent intellectual property rights polypropylene reactor alloy key technology.