端羟基液体丁腈橡胶增塑氢化丁腈橡胶的性能  

Properties of hydrogenated butadiene-acrylonitrile rubber plasticized by hydroxyl terminated poly(butadiene-co-acrylonitrile)

作　　者：李再峰[1] 董慧民[1] 刘晓丹[1] 李敏婷[1] 张成龙[1] 熊召举[1] 

机构地区：[1]青岛科技大学生态化工国家重点实验室培育基地,山东青岛266042

出　　处：《合成橡胶工业》2011年第4期277-281,共5页China Synthetic Rubber Industry

基　　金：山东省自然科学基金资助项目(Y2008B08);山东省教育厅科技发展计划(J08LC08);中国博士后基金特别资助项目(20090410370)

摘　　要：利用核磁共振仪、差示扫描量热仪、热重分析仪和材料拉伸试验机等研究了端羟基液体丁腈橡胶增塑氢化丁腈橡胶的结构与性能,并与增塑剂TP-95、TP-90 B及TP-759的增塑效果进行了对比。结果表明,端羟基液体丁腈橡胶增塑氢化丁腈橡胶后,一方面起到了与TP-95、TP-90 B和TP-759类似的增塑作用,如降低了混炼胶的门尼黏度;另一方面作为一种反应性增塑剂,在体系中自由基的引发下其结构双键与氢化丁腈橡胶分子主链发生了邻接交联反应,使硫化胶的交联密度、拉伸强度、100%定伸应力和硬度都增大,耐热性能提高,而玻璃化转变温度没有变化。端羟基液体丁腈橡胶用量为3份(质量)时其所增塑氢化丁腈橡胶的拉伸强度高达41.7 MPa,且具有较低的门尼黏度和较好的热老化性能。The hydrogenated butadiene-acrylonitrile（HNBR） was plasticized by hydroxyl terminated poly（butadiene-co-acrylonitrile）（HTBN）,the structure and properties of plasticized rubber were characterized with pulsed nuclear magnetic resonance,differential scanning calorimetry,thermogravimetric analysis and stress-strain test,and the plasticization effect of HTBN was compared with plasticizer TP-95,TP-90 B and TP-759.The results indicated that HTBN worked as the common plasticizer like TP-95,TP-90 B and TP-759,resulting in the decrease of HNBR Mooney viscosity,on the other hand,it worked as a reactive species,the free radical in the vulcanization system intiated the adjacent crosslinking reaction between HTBN double bond and HNBR macromolecular backbone,thus increasing the crosslinking density,tensile strength,modulus at 100% and Shore A hardness of vulcanizates,improving the heat resistance but the glass transition temperature（no significant change）.When HTBN was 3 phr,the tensile strength of HNBR vulcanizate reached 41.7 MPa,the Mooney viscosity was lower and the heat aging property was better.

关 键 词：氢化丁腈橡胶 增塑 端羟基液体丁腈橡胶 力学性能 耐热性能 

分 类 号：TQ333.7[化学工程—橡胶工业]