Atif Rasheed, Shyha Islam, Inam Fawad
Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.
Polymers (Basel). 2016 Aug 4;8(8):281. doi: 10.3390/polym8080281.
Monolithic epoxy, because of its brittleness, cannot prevent crack propagation and is vulnerable to fracture. However, it is well established that when reinforced-especially by nano-fillers, such as metallic oxides, clays, carbon nanotubes, and other carbonaceous materials-its ability to withstand crack propagation is propitiously improved. Among various nano-fillers, graphene has recently been employed as reinforcement in epoxy to enhance the fracture related properties of the produced epoxy⁻graphene nanocomposites. In this review, mechanical, thermal, and electrical properties of graphene reinforced epoxy nanocomposites will be correlated with the topographical features, morphology, weight fraction, dispersion state, and surface functionalization of graphene. The factors in which contrasting results were reported in the literature are highlighted, such as the influence of graphene on the mechanical properties of epoxy nanocomposites. Furthermore, the challenges to achieving the desired performance of polymer nanocomposites are also suggested throughout the article.
整体式环氧树脂由于其脆性，无法阻止裂纹扩展，容易发生断裂。然而，众所周知，当进行增强时，尤其是通过纳米填料（如金属氧化物、粘土、碳纳米管和其他含碳材料）增强时，其抵抗裂纹扩展的能力会得到显著提高。在各种纳米填料中，石墨烯最近被用作环氧树脂的增强材料，以提高所制备的环氧-石墨烯纳米复合材料与断裂相关的性能。在这篇综述中，石墨烯增强环氧纳米复合材料的机械、热和电性能将与石墨烯的形貌特征、形态、重量分数、分散状态和表面功能化相关联。文中突出了文献中报道结果相互矛盾的因素，如石墨烯对环氧纳米复合材料机械性能的影响。此外，在整篇文章中还提出了实现聚合物纳米复合材料所需性能所面临的挑战。
