CAJ | 학술논문

综述了烯烃聚合用Ziegler-Natta（Z-N）催化剂活性中心的影响因素以及基于活性中心浓度测定的聚合动力学研究方法。内给电子体对催化剂的载Ti量和Ti分布以及MgCl2载体的微晶结构和形态都有重要影响；外给电子体的毒化作用使活性中心浓度下降，但无规活性中心浓度的下降幅度更明显，因而等规活性中心比例相对升高；共聚单体的加入使催化剂颗粒破碎，从而暴露出新的活性中心，增加了活性中心的浓度；加入氢气后聚合反应速率显著提高。由于Z-N催化剂的结构和反应机理高度复杂，研究其微观机理仍面临很多瓶颈。
종술료희경취합용Ziegler-Natta（Z-N）최화제활성중심적영향인소이급기우활성중심농도측정적취합동역학연구방법。내급전자체대최화제적재Ti량화Ti분포이급MgCl2재체적미정결구화형태도유중요영향；외급전자체적독화작용사활성중심농도하강，단무규활성중심농도적하강폭도경명현，인이등규활성중심비례상대승고；공취단체적가입사최화제과립파쇄，종이폭로출신적활성중심，증가료활성중심적농도；가입경기후취합반응속솔현저제고。유우Z-N최화제적결구화반응궤리고도복잡，연구기미관궤리잉면림흔다병경。
This?article?reviewed?the?factors?affecting?the?active?centers?of?Ziegler-Natta?catalyst?for?olefin?polymerization?and?the?research?method?of?polymerization?kinetics?based?on?the?determination?of?concentration?of?active?centers.?Titanium?carrying?amount,distribution?of?titanium,crystal?structures?and?morphologies?of?MgCl2?supports?are?all?influenced?by?the?internal?donors.The?toxic?effect?of?external?donors?can?reduce?the?concentration?of?active?centers,but?the?concentration?of?atactic?active?centers?decreases?significantly,so?the?percentage?of?iso-tactic?active?centers?increases?relatively.?The?catalyst?particles?are?crushed?by?introducing?the?comonomer,then?new?active?centers?are?revealed,and?the?concentration?of?active?centers?is?increased.?The?polymerization?reaction?rate?is?increased?remarkably?by?the?addition?of?hydrogen.?The?micromechanism?research?on?Ziegler-Natta?cata-lyst?faces?many?bottlenecks?because?of?its?highly?complex?structure?and?reaction?mechanism.