阴离子法丁羟胶合成中“假凝胶”的研究  

On pseudo-gel in synthesis of HTPB by anionic polymerization

作　　者：李立朝[1] 张兴英[1] 韩丙勇[1] 

机构地区：[1]北京化工大学新型高分子材料的制备与加工北京市重点实验室,北京100029

出　　处：《北京化工大学学报（自然科学版）》2003年第5期44-47,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：采用阴离子聚合法、双锂引发剂、环己烷为溶剂 ,合成双端丁羟胶 (HTPB)。研究了合成中出现的“假凝胶”现象及解缔剂YB对丁羟胶分子量及分子量分布、官能度、聚合反应速率的影响 ,得到了较为满意的结果。Hydroxyl-terminated polybutadiene (HTPB) was prepared by anionic polymerization using cyclohexane as solvent, and YB was used as dissociation reagent in the synthesis of HTPB. The sequent influence on the molecular distribution, average functionality and the polymerization temperature and pressure in the reactor were investigated in detail. Finally,by using YB, HTPB could be controlled, of which the molecular weight distribution was smaller than 1.3 and the average functionality was improved.

关 键 词：丁羟胶 解缔剂 官能度 分子量 聚合反应速率 

分 类 号：TQ334.2[化学工程—橡胶工业] TQ316.324