Abstract Both the mechanical properties and friction characterization of graphene–silicone rubber composites were investigated systemically. Graphene–silicone rubber composites were prepared by means of solution and flocculation process to improve the processing performance and avoid agglomeration. It was found that the tensile strength, elongation at break, and tear strength of graphene–silicone rubber composites with 2.0% graphene were respectively 32.8, 21.1, and 23.5% higher than those for pure rubber. Both the friction coefficient and the abrasion loss of silicone rubber composites of 0.75 wt% graphene were 50.6 and 72.8% lower than those for the pure specimen. The microscopic fracture and friction mechanism of graphene–silicone rubber composites were analyzed, which indicated that both the wear resistance and mechanical properties of silicone rubber were influenced by the lubrication, reinforcement, and agglomeration of graphene. These results will play an important role in the design and evaluation of the friction and wear properties of graphene–silicone rubber composites.

中文翻译：

---

耐磨石墨烯-硅橡胶复合材料

摘要 系统研究了石墨烯-硅橡胶复合材料的力学性能和摩擦特性。采用溶解法和絮凝法制备石墨烯-硅橡胶复合材料，以提高加工性能并避免团聚。结果表明，含 2.0% 石墨烯的石墨烯-硅橡胶复合材料的拉伸强度、断裂伸长率和撕裂强度分别比纯橡胶高 32.8%、21.1% 和 23.5%。0.75 wt% 石墨烯的硅橡胶复合材料的摩擦系数和磨损损失均比纯样品低 50.6% 和 72.8%。分析了石墨烯-硅橡胶复合材料的微观断裂和摩擦机理，这表明硅橡胶的耐磨性和机械性能都受到石墨烯的润滑、增强和团聚的影响。这些结果将在石墨烯-硅橡胶复合材料的摩擦磨损性能的设计和评估中发挥重要作用。