CAJ | 학술논문

　　采用相同的工艺制备了两种不同的MgCl2/SiO2复合载体型Ziegler-Natta催化剂，考察了SiO2粒径对催化剂的形态结构及其催化乙烯聚合性能的影响，并利用BET测试仪和扫描电子显微镜（SEM）等对催化剂的形态和物性进行了表征。结果表明：加入小颗粒SiO2可以改善催化剂的颗粒形态和均匀程度，而且小颗粒SiO2制备的复合载体催化剂不仅具有较高的催化剂活性，还可使聚合产品的颗粒变得均匀，提高聚合物的堆密度，降低细粉含量，增强氢调敏感性。
　　채용상동적공예제비료량충불동적MgCl2/SiO2복합재체형Ziegler-Natta최화제，고찰료SiO2립경대최화제적형태결구급기최화을희취합성능적영향，병이용BET측시의화소묘전자현미경（SEM）등대최화제적형태화물성진행료표정。결과표명：가입소과립SiO2가이개선최화제적과립형태화균균정도，이차소과립SiO2제비적복합재체최화제불부구유교고적최화제활성，환가사취합산품적과립변득균균，제고취합물적퇴밀도，강저세분함량，증강경조민감성。
Two?different?MgCl 2/SiO2?complex?supported?Ziegler-Natta?catalysts?were?prepared?in?the?same?way.?The?effects?of?the?particle?size?of?SiO2?on?the?morphology?and?structure?of?the?catalysts?and?the?cata-lytic?performance?for?ethylene?polymerization?were?investigated.?The?morphology?and?physical?properties?of?the?cata-lysts?were?characterized?by?BET?method?and?scanning?electron?microscopy(SEM).?The?results?indicate?that?adding?small?particles?of?SiO2?can?improve?the?particles?morphology?and?uniformity?of?the?catalysts.?The?MgCl2/SiO2?complex?supported?catalyst?prepared?with?small?particles?of?SiO2?not?only?has?higher?catalytic?activity,?but?also?leads?to?the?uniform?particles,?the?increase?of?the?bulk?density?and?the?decrease?of?the?fine?powders?content?of?the?polymer?and?the?enhancement?of?the?hydrogen?modulation?sensitivity.