Assessing damage mitigation by silanized milled graphite nanoparticles in hybrid GFRP laminated composites. (May 2020)

• Record Type: Journal Article
• Authors: Das, Subhankar; Halder, Sudipta; Khan, Nazrul Islam; Paul, Bappi; Goyat, M.S.
• Is Part Of: Composites. Volume 132(2020)
• Publication Date: 2020-05
• Subjects: A Glass fibres -- B Delamination -- C Interface/interphase -- D Mechanical testing; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2020.105784
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: In GFRP laminated composites, matrix-fiber delamination is almost unavoidable and a serious problem that significantly hampers the mechanical properties of the composites. This work presents the use of cost-effective silanized milled graphite nanoparticles (GrNPs) to mitigate matrix-fiber delamination in GFRP laminated composites. FESEM and TEM analysis of pristine GrNPs exhibit porous structure consisting of stacked and randomly oriented planes with a large number of defect sites. The silanization of GrNPs (SGrNPs) results in the covering of pores or defect sites and produces the rough surfaces. The SGrNPs (0.5 wt%) reinforced GRFP laminated composites reveal the enhancement in the mechanical properties such as tensile strength (~33%), tensile modulus (~21%), toughness (~35%), flexural strength (~42.6%), work of fracture (~57%), and short beam strength (~23%), respectively. The improvement in the mechanical properties of the composites is due to the mitigation of matrix-fiber delamination by SGrNPs.