氧化石墨烯对阻尼丁腈橡胶抗老化性能的影响

以丁腈橡胶(NBR)为基体,添加由改进Hammer法制备的氧化石墨烯(GO)和经过表面改性过的氧化石墨烯(MGO),制备出有着较高阻尼性能的阻尼材料,借助DMA,AFM,SEM等手段,研究NBR/GO与NBR/MGO共混物的阻尼与抗老化性能,研究结果表明,加入GO与MGO于NBR中后,损耗角正切值(tanδ)增大,且其抗老化性能也有所改善,添加较少量GO于基体中时,其抗老化性能较好,添加MGO于基体中时,添加量与共混物的抗老化性能关系不明显,说明GO和MGO的分散性对其抗老化性能有正相关性。通过微观分析发现,团聚是共混物抗老化性能下降的主要原因,而添加GO和MGO后所形成的界面效应则是其阻尼性能和抗老化性能优良的主要原因。

Effect of Graphene Oxide on Anti-aging Property of Nitrile Butadiene Rubber

The blends with higher damping performance was prepared based on nitrile butadiene rubber (NBR) with addition of graphene oxide(GO) and modified graphene oxide(MGO) prepared by improved Hammer method.Meanwhile,the damping property and the anti-aging property of the blends were investigated by DMA,AFM,SEM and so forth.The results show that after the addition of the GO and MGO,the tangent of loss angle (tanδ) increases and also the anti-aging property is improved.When adding less amount of GO in the matrix,the anti-aging property is better;when adding MGO in the matrix,the amount of addition is not obviously related with the anti-aging property of the blends.The dispersion of GO and MGO has positive correlation with its anti-aging property.By microscopic analysis,the main reason for the decrease of anti-aging property of the blends is the agglomeration of the GO.The interface effect formed by the addition of MGO and GO is the main reason for its high damping property and anti-aging property.