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在丁腈橡胶(NBR)中添加受阻酚AO-60制备受阻酚/丁腈橡胶复合材料。利用DSC、SEM、动态力学分析仪(DMA)等测试手段对该复合材料的结构进行了表征,并研究了其动态力学性能。结果表明:AO-60在不同的NBR基体中的分散情况不同。在丙烯腈质量分数为35%的NBR基体(N230S)中,AO-60形成了精细的分散结构,且与NBR大分子之间形成了强烈的分子间作用力,两相相容性好。与纯NBR基体相比,AO-60/NBR复合材料的玻璃化转变温度(Tg)随着AO-60含量的增加逐渐升高,损耗因子(tanδ)逐渐增大,阻尼性能提高。同时,AO-60/N230S复合材料表现出更好的阻尼性能。
Hindered phenol AO-60 was added into nitrile rubber (NBR) to prepare hindered phenol / nitrile rubber composite. The structure of the composites was characterized by DSC, SEM and dynamic mechanical analyzer (DMA). The dynamic mechanical properties of the composites were also studied. The results show that the dispersion of AO-60 in different NBR matrix is different. In the NBR matrix (N230S) with mass fraction of acrylonitrile of 35%, AO-60 formed a finely dispersed structure and formed a strong intermolecular force with NBR macromolecules with good compatibility between two phases. Compared with the pure NBR matrix, the glass transition temperature (Tg) of AO-60 / NBR composites increases with the increase of AO-60 content, and the tanδ gradually increases and the damping performance improves. At the same time, AO-60 / N230S composites show better damping properties.