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Construction of Three-dimensional Graphene Foam Plates and Experimental Study of Nanocomposite Tensile Strength of Graphene Foam/Epoxy

Khosravani, Sajedeh | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50363 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Adib Nazari, Saeed
  7. Abstract:
  8. In this study composite is built based on epoxy which is reinforced with 3D graphen foam using the RTM (resin transfer molding) method in which the molding is done by hand, through injecting epoxy to graphen foam.Good scattering and neat meshing of 3d graphen planes in composite have resulted in its improved mechanical quilities.The subject of the present study is the synthesis of graphen foam from graphen oxide and making graphen foam/epoxy composite in order to improve its mechanical properties. In order to do that, firstly graphen foam is forged from graphen oxide in a 3d mesh, in a way that single graphen planes in polymer matrixes are eliminated.Having very little density, very high effective area, high porousness and great electrical and mechanical characteristics, graphen foam could arguably be one of the best nanostructures used to improve nanocomposite qualities. As it is shown in the SEM pictures, links between graphen planes are formed neatly, creating a 3d structure. In this project by making a graphen foam/epoxy composite with the graphen having a 0.63% weight percentage, it is shown that the resulting composite exhibits high mechanical attributes and amazing tensile strength.As seen in the strain strength curve, highest tensile strength is 90.21 MegaPascals which is exhibited in the 2.5 strain percentage region.The unique structure of graphen foam in graphen foam/epoxy composite has resulted in a 20% improvement in modulus of elasticity and a 15% increase in its tensile strength
  9. Keywords:
  10. Graphene Oxide ; Nanocomposite ; Tensile Test ; Graphene Foam ; Resin Transfer Molding (RTM) ; Graphene Foam Synthesis ; Epoxy Matrix Composites

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