改性氧化石墨烯/丁基橡胶复合材料的制备和隔声性能研究

通过Hummers法并以硅烷偶联剂KH-550为改性剂制备改性氧化石墨烯(GO),以改性GO作为补强填料、丁基橡胶(IIR)为橡胶基体制备改性GO/IIR复合材料,并对其性能进行研究。结果表明:加入改性GO制备的复合材料的拉伸强度先增大后减小,损耗因子峰值增大,阻尼温域扩宽,隔声性能略有提升;复合材料可以有效抑制单层镀锌钢板的共振和吻合效应,基于其阻尼特性制备的约束阻尼隔声板隔声性能明显提高。

Preparation and Sound Insulation Performance of Modified GO/IIR Composite

The modified graphene oxide(GO)was prepared by Hummers method and using silane coupling agent KH-550 as modifier,the modified GO/butyl rubber(IIR)composites were prepared with modified GO as reinforcing filler and IIR as rubber matrix,and the properties of the composites were investigated.The results showed that the tensile strength of the composites prepared by adding modified GO first increased and then decreased,the loss factor peak increased,the damping temperature range was widened,and the sound insulation performance was slightly improved.The composites could effectively suppress the resonance and coincidence effects of single-layer galvanized steel sheet,and the sound insulation performance of the constrained damping sound insulation board prepared based on the damping characteristics of the composites was significantly improved.