| 新型TiCl_4/Ni(acac)_2复合催化剂乙烯聚合反应 |
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| 引用本文： | 萧翼之,杨海滨,张启兴,王海华.新型TiCl_4/Ni(acac)_2复合催化剂乙烯聚合反应[J].应用化学,2001(7). |
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| 作者姓名： | 萧翼之 杨海滨 张启兴 王海华 |
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| 作者单位： | 中山大学高分子研究所!广州510275 |
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| 基金项目： | 国家自然科学基金 (2 98740 3 9)，北京燕山石油化工公司研究院资助项目，广东省自然科学基金资助项目 |
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| 摘 要： | 制备了 Ti Cl4/ Ni(acac) 2 / Mg Cl2 -Si O2 -Zn Cl2 / Al R3复合催化剂 .研究了促进剂四氯化硅 (Si Cl4)和各种聚合条件对乙烯聚合的影响及其表观聚合动力学 .用 DSC、IR、1 3C NMR对聚合产物进行了结构性能的分析和表征 .结果表明 ,促进剂 Si Cl4有很好的提高催化效率的作用 ;Ti Cl4/ Ni(acac) 2 复合催化剂有催化乙烯齐聚和原位共聚功能 ,获得了熔点和结晶度较低的、有一定支化度的中、低密度聚乙烯 .
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| 关 键 词： | 乙酰丙酮镍 四氯化钛 复合催化剂 四氯化硅 乙烯聚合 |
Polymerization of Ethylene Catalyzed by TiCl_4/ Ni(acac)_2 Supported Complex Catalysts |
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| XIAO Yi-Zhi,YANG Hai-Bin,ZHANG Qi-Xing,WANG Hai-Hua.Polymerization of Ethylene Catalyzed by TiCl_4/ Ni(acac)_2 Supported Complex Catalysts[J].Chinese Journal of Applied Chemistry,2001(7). |
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| Authors: | XIAO Yi-Zhi YANG Hai-Bin ZHANG Qi-Xing WANG Hai-Hua |
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| Institution: | XIAO Yi-Zhi,YANG Hai-Bin,ZHANG Qi-Xing,WANG Hai-Hua* |
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| Abstract: | The TiCl 4/Ni(acac) 2 complex catalysts were prepared. The effects of SiCl 4 and polymerization conditions on the polymerization of ethylene and their apparent kinetics parameters have been studied. The products obtained were characterized by DSC, IR and 13C NMR. The results indicated that SiCl 4 could increase the catalytic activity of the catalysts and the polymer obtained have low melting temperatures, crystallinity, density and some branches. The complex catalysts have the function of oligomerization and in situ copolymerization for ethylene. |
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| Keywords: | Ni(acac) 2 TiCl 4 SiCl 4 complex catalyst ethylene oligomerization in situ copolymerization |
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