溶聚丁苯橡胶接枝MAH的改性研究  

Study on grafting of SSBR with maleic anhydride

作　　者：杨金娟[1,2] 栗晓杰[1,2] 陈力军[3] 杨明山[2] 戴玉华[2] 刘冰[1] 林青峰[2] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京石油化工学院材料科学与工程学院,特种弹性体复合材料北京市重点实验室,北京102617 [3]中国石化北京燕山分公司合成橡胶一厂,北京102500

出　　处：《现代化工》2014年第1期64-67,共4页Modern Chemical Industry

摘　　要：为提高溶聚丁苯橡胶(SSBR)与极性物质的相容性,以马来酸酐(MAH)为极性单体对SSBR进行接枝改性。研究了MAH用量、引发剂过氧化苯甲酰(BPO)用量、反应时间和反应温度等对接枝聚合物(SSBR-g-MAH)的接枝率和凝胶率的影响。结果发现,随MAH、BPO用量增加和反应时间延长,接枝聚合物的接枝率呈现先增大后降低的变化趋势,而凝胶率变化则与之相反;随反应温度的升高,接枝率依然先增大后降低,但凝胶率却一直增大。热重分析表明接枝橡胶与SSBR具有相同的耐热性,分解温度均在360℃左右,并采用傅里叶红外法对接枝产物的结构进行了表征。In order to improve compatibility between solution-polymerized styrene-butadiene-rubber （SSBR） with polar monomers, a series of modified SSBR are prepared by grafting with maleic anhydride （ MAH ） as graft monomer. The effects of MAH content,BPO content, reaction time and reaction temperature on the ratio of SSBR-g-MAH and gel ratio are studied. It is found that with increasing MAH content, BPO content and reaction time, the grating ratio of modified SSBR increases fast firstly and then decreases, while gel ratio decreases firstly and then increases. When reaction temperature increases,grafting of modified SSBR shows a same curve as former,while the gel ratio increases all the way. Thermal gravimetric analysis shows that the grafted SSBR has the same heat resistance with SSBR, and the structure of the grafted SSBR is characterized by FTIR.

关 键 词：溶聚丁苯橡胶 马来酸酐 溶液接枝 接枝率 凝胶率 

分 类 号：TQ330.5[化学工程—橡胶工业]