丙烯等规配位聚合催化剂及电容器膜基材iPP的制备技术研究进展  

Research Progress on Preparation Technology of Catalysts for Propylene Isotactic CoordinationPolymerization and iPP for Capacitor Film Substrate Material

作　　者：曹春鹏 赵星月 李涵 刘景蛟 盖超杰 黄启谷 CAO Chunpeng;ZHAO Xingyue;LI Han;LIU Jingjiao;GAI Chaojie;HUANG Qigu(State Key Laboratory of Chemical Resource Engineering,Beijing 100029,China;MOE Key Laboratory of Carbon Fibers and Functional Polymers,Beijing 100029,China;College of Material Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]化工资源有效利用国家重点实验室,北京100029 [2]碳纤维及功能高分子教育部重点实验室,北京100029 [3]北京化工大学材料科学与工程学院,北京100029

出　　处：《电力电容器与无功补偿》2024年第1期15-26,共12页Power Capacitor & Reactive Power Compensation

基　　金：国家重点研发计划(2021YFB2401501)。

摘　　要：生产包括电容器膜基材iPP在内高端聚丙烯的关键技术是丙烯高等规聚合的高活性催化剂和先进聚合工艺。本文详细介绍了丙烯聚合催化剂的发展历程,包括高效Ziegler-Natta催化剂、茂金属催化剂和非茂金属催化剂,指出了在合成电容器基材iPP方面此三类催化剂的优缺点。阐述了烯烃聚合催化剂的近期发展动态:产生了在催化剂结构/组成中引入强吸电子基团有利于提高催化剂活性和聚烯烃分子量的新理论,发展了新一代烯烃聚合催化剂包括内外给电子体于同一分子的丙烯聚合催化剂和全杂环金属有机催化剂,提出了制备嵌端共聚烯烃的可逆“络合-断开”配位聚合新方法。基于丙烯聚合先进工艺,结合高端电容器膜基材iPP技术指标的严苛要求,分析了聚丙烯粉料和粒料中灰分产生的主要因素,建立了在聚丙烯粉料灭活之前进入复合有机溶剂洗涤工序的生产方法,制备合格的高端电容器膜基材i PP。The key technologies for the production of high-end polypropylene,including capacitor film substrate iPP,are the highly active catalysts and the advanced polymerization processes for high isotactic polymerization of propylene.In this paper,an overview of the development of polymerization catalyst for the polypropylene,including highly efficient Ziegler-Natta catalysts,metallocene catalysts and non-metallocene catalysts,is introduced in detail.The prons and cons of such three types of catalysts for synthesis of iPP that is used in the production of capacitors are pointed out.The recent development of the catalysts for olefin polymerization is described.A new theory of introducing electron withdrawing group in the catalytic structure and component which is conductive to improving the catalyst activity and the molecular weight of polyolefin.A new generation of olefin polymerization catalysts,including propylene polymerization catalysts with internal and external electron donors in the same molecule and all-heterocyclic metal-organic catalysts,has been developed.A new concept of the reversible complexing-opening coordination polymerization(RCOCP)for synthesizing olefin block copolymers is proposed.Based on the advanced propylene polymerization process in combination with the strict requirements of technical data of iPP for the capacitor film substrate material,the main factors generating ash from polypropylene powder and grains are analyzed.The new production method that the composite organic solvent washing process is applied before the inactivation of polypropyl-ene powder is set up so to produce the qualified high-end capacitor film substrate iPP.

关 键 词：高活性催化剂 配位聚合 先进聚合工艺 等规聚丙烯 高端电容器膜基材 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ426[电气工程—电器] TM53