【摘 要】
：
Graphene is one of the strongest materials in the world,which makes it a perfect candidate of the reinforce filler in high-performance nanocomposite.However,since the thickness of graphene is only aro
【机 构】
：
Department of Mechanics & Engineering Science, Peking University, Beijing,100871, China
【出 处】
：
The 5th Asian Conference on Mechanics of Functional Material
论文部分内容阅读
Graphene is one of the strongest materials in the world,which makes it a perfect candidate of the reinforce filler in high-performance nanocomposite.However,since the thickness of graphene is only around nanometer level,it is not clear whether the continuum composite theory can accurately describe the mechanical behaviour of graphene-based nanocomposite and how the load transfer happens from graphene to polymer matrix.In the present work,the indentation response of a simplest nanocomposite (including graphene membrane and a PDMS substrate) is measured by using atomic force microscope (AFM),and the indentation force-indentation depth relationship is record till the graphene membrane is fractured.With the aid of finite element modelling (FEM),the reinforcement of graphene on PDMS and the load transfer efficiency of graphene/PDMS interface are investigated.In addition,the effect of the number of graphene layer on load transfer efficiency is also considered in the present work.The results show that the indentation load of graphene/PDMS nanocomposite is about 10-18 times higher than that of pure PDMS matrix;the graphene/PDMS interface will not debonded till graphene membrane is fractured;the conventional indentation theory cannot correct describe the indentation response of graphene/PDMS nanocomposite.
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