导　　师： 董群

学科专业： 081701

授予学位： 硕士

作　　者： ;

机构地区： 东北石油大学

摘　　要： 以异丁烯为原料，用VPO方法分析数均分子量，用核磁共振分析α烯烃含量，用釜式反应器进行聚异丁烯合成。同时，进行了连续聚合实验，催化剂是以BF/_3为主催化剂，MTBE为助催化剂氯代烃为溶剂配制聚合催化剂。 在低于常温下进行了催化剂组成，助催化剂的种类和含量、溶剂的种类对聚异丁烯的分子量和α烯烃含量的影响，同时，进行了主催化剂//助催化剂比例，催化剂制备温度，催化剂保存温度室温放置时间的考察，研究了原料的种类、原料的预处理的条件、反应时间、反应温度、催化剂的加入量以及终止剂的种类和其配比的影响、考察了终止时间的影响。确定了催化剂制备的最佳工艺条件和聚合反应的最佳工艺条件。在间歇反应的基础上，进行了连续聚合工艺条件的研究，考察了连续聚合的反应时间、温度影响。 通过实验，发现影响催化剂活性的因素有：主催化剂的纯度、助催化剂的种类，用MTBE为助催化剂制备的络合催化剂体系，聚合物颜色较好、催化剂活性和α烯烃含量都高。主催化剂的纯度在99.6％可以满足催化剂活性要求，从溶剂的种类和量影响实验中可知，溶剂对改变BF/_3-MTBE催化剂粘度，使催化剂在体系中分散性方面有显著的作用。CHCl/_3为溶剂催化活性高，加入CHCl/_3、CH/_2Cl/_2溶剂后，可以延长催化剂的放置时间。溶剂加入次序对络合催化剂性能有影响，先加入溶剂制备的络合催化剂高于催化剂制备完，再加溶剂的络合催化剂。反应原料对聚合条件及结果的影响是用丁二烯抽余液、重油催化加氢碳四及蜡油催化碳四为原料进行聚合，同一原料，催化剂和异丁烯比不同，对聚合物的收率和α烯烃的含量影响较大，催化剂和异丁烯比大，聚合物收率和α烯烃的含量都高，丁二烯含量低，聚合物 The properties of different catalysts for polyisobutylene with a terminal double bond in isobutylene were studied. The Mn of polyisobutylene was measured using VOP method and the amount of a-olefins was determined by NMR. Polyisobutylene was prepared in the kettle reactor. Besides, the experiment of polymerization had gotten together in succession , the catalyst comprising BF3 as the main catalyst , MTBE for catalyst-accelerators compound and hydrocarbon chloridized for the solvent. The effect of the composition of catalyst, the kind and content of the catalyst-accelerators and the kinds of solvents in lower than ambient temperature on the molecular weight of polyisobutylene and the amount of a-olefins was discussed. Besides, the proportion of main catalysts //catalyst-accelerators, the temperature catalysts prepared, the store temperature and the period kept in ambient temperature also were considered This text involved the effect of raw materials kinds, and the conditions of raw materials pretreated, and the temperature and time, and the total amount of catalyst used and the kinds and the proportion of halts. The best process conditions for the preparation of catalysts and for the reaction of polymerization were defined. The process conditions for the polymerization in succession were studied on the basis of reaction in batches, and the temperature and time for the reaction of polymerization in succession were discussed. The results of the experiment show that the activation of catalyst was affected by the purity of the main catalyst and the kind of the catalyst-accelerators. The activation of catalyst comprising MTBE for catalyst-accelerators and the amount of a-olefins were both high and the color of the polymer is better. The purity of the main catalyst requested by the active of catalyst can be satisfied with 99.6/%. Solvent have remarkable function on changing viscidity and dispersibility of BF3-MTBE catalyst, which can be found in experiment. The activation catalyst comprising CHCl3

关 键 词： 异丁烯 聚异丁烯

领　　域： [化学工程]