Study on Two Body Abrasive Wear behaviour of Carboxyl-Graphene Reinforced Epoxy Nano-composites

International Conference on Advances in Manufacturing, Materials and Energy Engineering 2018

材料科学;能源学

Vinod^1 ; Kumar, Ajith^2 ; Suresha, B.^3 ; Kiran Kumar, M.V.^4 ; Ramesh, S.^1

Department of Mechanical Engineering, School of Engineering and Technology, Jain University, Bangalore, India^1

Department of Aeronautical Engineering, MITE, Moodabidri, India^2

Department of Mechanical Engineering, NIE, Mysore, India^3

Department of Mechanical Engineering, MITE, Moodabidri, India^4

关键词: Abrasive wear behavior;    Constant velocities;    Epoxy nanocomposites;    Friction coefficients;    Functionalized graphene;    Interfacial adhesions;    Specific wear rates;    Two body abrasive wear;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/376/1/012058/pdf
DOI  :  10.1088/1757-899X/376/1/012058

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The focus of this study was to investigate the effect of carboxylic acid (COOH) functionalized graphene (CGr) content on abrasive wear behavior of epoxy nanocomposites. CGr-reinforced epoxy (CGr//Ep) nanocomposites were fabricated using probe sonicator for dispersion and vacuum oven for curing. The percentage of CGr in the developed composites was varied from 0.2 to 1 wt. % with an increament of 0.2 wt. %. The abrasive wear tests were conducted on the developed CGr/Ep composites on SiC abrasive paper with two grit sizes at constant velocity and constant load for varying abrading distance. The worn surfaces were analyzed using Scanning Electron Microscope and the images reveals that the developes nanocomposites exhibits good tribolofical performance at low filler loading (≤0.6 wt. %). Neat epoxy showed the highest specific wear rate as well as high wear volume. On the other hand, epoxy with 0.6 wt. % of CGr exhibited the least friction coefficient and superior wear resistance for 320 grit SiC abrasive paper. It is predicted that the good interfacial adhesion between CGr and epoxy matrix and also tribo-chemical reactions between CGr layer and epoxy matrix for reducing wear rate of the composite materials.