中文关键词:聚丙烯蒙脱土复合材料双功能催化体系 英文关键词:polypropylenemontmorillonitecompositeDual‐functional catalyst 基金项目:中国石油科技创新基金(2015D-5006-0502)

作者	单位
王涛	河北科技大学
郭海洋	天津工业大学
胡泊洋	天津工业大学
孟浩	天津工业大学
侯彦辉	天津工业大学

摘要点击次数:1460 全文下载次数:0 中文摘要: 为了制备聚丙烯/蒙脱土纳米复合材料，将Brookhart型的乙烯齐聚催化剂负载于有机蒙脱土片层间，进一步与丙烯聚合茂金属催化剂进行复配得到双功能催化体系。采用这种双功能催化剂体系通过催化乙烯齐聚得到?-烯烃/蒙脱土的齐聚产物，以及丙烯与这种齐聚产物共聚，合成了一系列结构不同的聚丙烯/蒙脱土纳米复合材料。通过气相色谱仪（GC）、X射线衍射（XRD）分析了蒙脱土负载的铁系催化剂催化乙烯齐聚产物是以C4~C16为主的?-烯烃，蒙脱土以片层形式分散于齐聚产物的甲苯溶液中。进一步研究了蒙脱土负载的铁系催化剂与共聚催化剂复配，催化乙烯齐聚以及丙烯与齐聚产物共聚合的情况。通过XRD、透射电镜（TEM）、差示量热分析（DSC）、凝胶渗透色谱（GPC）分析表征可知，蒙脱土以纳米片层剥离的形式均匀分散于聚丙烯基体中，聚丙烯/复合材料的结晶温度比纯聚丙烯的下降，所得聚丙烯基体分子量在8.1?104 g/moL~17.1?104 g/moL。 英文摘要: In order to prepare polypropylene/montmorillonite nanocomposites, the Brookhart type of ethylene oligomerization catalyst was supported on the organic montmorillonite layer, and then mixed with propylene polymerization catalyst (metallocene catalyst) to obtain a kind of bifunctional catalytic system. Using the bifunctional catalytic system, a series of polypropylene/montmorillonite nanocomposites with different structures were synthesized by the copolymerization of olefins/montmorillonite and propylene. The results of gas chromatography (GC) and X-ray diffraction (XRD) show that the C4~C16 α-olefins were obtained by montmorillonite-supported iron catalyst, and the montmorillonites were dispersed in the form of lamellar oxygenated product in toluene solution. The effects of montmorillonite supported iron catalyst and copolymerization catalyst on the polymerization of ethylene and the copolymerization of propylene and oligomerization products were investigated. The polypropylene/montmorillonite composites were characterized by XRD, transmission electron microscopy (TEM), differential thermal analysis (DSC), nuclear magnetic (NMR), and gel permeation chromatography (GPC). The results showed that montmorillonite were uniformly dispersed in the polypropylene matrix in the form of nanosheet stripping. The crystallization temperature of polypropylene/montmorillonite composites was lower than that of polypropylene. The molecular weight of the obtained polypropylene matrix is in the range of 8.1*104 g/mol to 17.1*104 g/mol. 查看全文查看/发表评论下载PDF阅读器 相关附件：版权转让声明书 -->