丁腈橡胶/受阻酚AO-80/炭黑复合材料中结合丙烯腈量对其结构与性能的影响  

Effect of bound acrylonitrile content on structure and properties of carbon black reinforced hindered phenol/nitrile rubber composites

作　　者：宋洪松[1] 李静[1] 曹亚君[1] 赵秀英[1] 王松 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]中国石油东北炼化工程有限公司吉林设计院,吉林吉林132002

出　　处：《合成橡胶工业》2011年第1期59-63,共5页China Synthetic Rubber Industry

基　　金：国家杰出青年科学基金资助项目(50725310)

摘　　要：在结合丙烯腈量不同的丁腈橡胶(NBR)中加入受阻酚AO-80和炭黑,制备了NBR/AO-80/炭黑(NBR/AO-80/CB)复合材料,用差示扫描量热仪、动态力学分析仪及物理机械性能测试等手段对复合材料的热性能、动态力学性能及物理机械性能进行了研究。结果表明,与纯NBR硫化胶相比,NBR/AO-80/CB复合材料的玻璃化转变温度大幅度升高,且随着NBR基质中结合丙烯腈量的增大而向高温方向移动;NBR/AO-80/CB复合材料具有较好的阻尼性能,其损耗峰的峰值高于1.22,有效阻尼温域(损耗因子不小于0.3)大于38℃,在不同的参考温度下均具有较宽的有效阻尼频率范围;同时,NBR/AO-80/CB复合材料具有较好的物理机械性能和耐热老化性能,尤其是N 220 S/AO-80/CB复合材料的综合性能最好。Crosslinked nitrile rubber（NBR）/hindered phenol（AO-80）/carbon black composites were prepared by mixing AO-80 and carbon black into NBR with different bound acrylonitrile contents.The thermal properties,dynamic mechanical properties and mechanical properties of the composites were characterized by differential scanning calorimetry,dynamic mechanical analysis and tensile tester.The results showed that compared with pure NBR,the glass transition temperature of NBR/AO-80/carbon black composites increased greatly,and shifted to high temperature direction with increasing the bound acrylonitrile content of NBR.NBR/AO-80/carbon black composites showed excellent damping properties： loss factor（tan δ） was more than 1.22,and the effective damping temperature range（tan δ equal to or more than 0.3） was more than 38 ℃,the frequency range with high tan δ was wide at different reference temperatures.NBR/AO-80/carbon black composites had good mechanical properties and thermal aging resistance.Especially,N 220 S/AO-80/carbon black composites were the best in all-round properties.

关 键 词：丁腈橡胶 炭黑 受阻酚AO-80 结合丙烯腈量 动态力学性能 阻尼性能 

分 类 号：TQ330.1[化学工程—橡胶工业]