点击化学法制备羟基改性1,2-聚丁二烯及其对橡胶性能的影响  

Preparation of hydroxyl modified 1,2-polybutadiene by click chemistry and its effect on rubber properties

作　　者：焦胜成[1] 李迪 JIAO Shengcheng;LI Di(Sinopec Qilu Company,Zibo 255408,China;School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]中国石化齐鲁分公司,山东淄博255408 [2]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《石油化工》2023年第6期756-762,共7页Petrochemical Technology

摘　　要：巯基-烯点击化学具有反应效率高、反应条件温和等特点。1,2-聚丁二烯(1,2-PB)含有侧乙烯基双键,较其他以主链双键为主的聚合物点击活性更高,且有利于制备高羟基官能化的改性PB产物。分别采用过氧化二苯甲酰、偶氮二异丁腈和过氧化十二酰为引发剂,2-巯基乙醇为改性剂,利用FTIR、DSC、元素分析等方法研究了引发剂种类和反应条件对1,2-PB点击改性产物结构的影响。实验结果表明,羟基与1,2-双键的反应程度大于50%,玻璃化转变温度提高10.71~13.84℃。同时还研究了羟基改性1,2-PB对白炭黑填充1,2-PB硫化胶性能的影响。Thiol-ene click chemistry has the characteristics of high reaction efficiency and mild reaction conditions.With double bonds of vinyl group in the side chain,1,2-polybutadiene(1,2-PB)has higher click activity than other polymers containing double bonds in the main chain,and it is beneficial for preparing modified products with high hydroxyl functionalization.Using benzoyl peroxide,azodiisobutyronitrile and lauryl peroxide as initiator and 2-mercaptoethanol as modifier,the effects of initiator types and reaction conditions on the structure of the click-modified product of 1,2-PB were studiedby FTIR,DSC and elemental analysis.The experimental results show that the reaction degree of hydroxyl 1,2-double bond is more than 50%,and the glass transition temperature increases 10.71-13.84℃.The effect of hydroxyl modified 1,2-PB on the properties of 1,2-PB vulcanized rubberfilled with white carbon black is also studied.

关 键 词：点击化学 1 2-聚丁二烯 羟基改性 白炭黑 

分 类 号：TQ317.5[化学工程—高聚物工业]