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Title: Degradation of glass fiber reinforced plastic composites containing nanoclay in alkaline environment
Authors: Zhu, Honggang
Leung, Christopher K. Y.
Liu, Mingyang
Kim, Jang-Kyo
Keywords: Glass fiber-reinforced plastic
Epoxy-organoclay nanocomposite
Alkaline environment
Degradation mechanisms
Mechanical properties
Material characterization
Issue Date: May-2011
Citation: Journal of composite materials, first pulished online on 6 May 2011, doi: 10.1177/0021998311401064
Abstract: The durability of GFRP composites made from neat epoxy and organoclay nanocomposite in the alkaline environment is studied. Accelerated tests are performed by immersing composite plates in the alkaline solution at 60oC. The tensile test and DMTA test are performed to evaluate the residual tensile properties and thermo-mechanical properties of aged GFRPs, while FTIR, micro-indenter and SEM are employed to characterize the deterioration of the matrix, fiber and interface in GFRPs. The tensile properties and storage modulus of the GFRP composites are reduced with increasing aging time. Interestingly, the reduction is significantly mitigated when the organoclay nanocomposite is used as the matrix material. Degradation of matrix material, weakening of fiber-matrix interfacial bonding and corrosion of glass fibers contribute to the property reduction in both composites. The excellent barrier characteristics of organoclay in the matrix are responsible for the superior performance of the GFRPs made from nanocomposite matrix, which in turn reduces the degree of corrosion of glass fibers.
Rights: The final, definitive version of this paper has been published in Journal of Composite Materials online on 6 May 2011 by SAGE Publications Ltd, All rights reserved. © [Zhu, Honggang; Leung, Christopher K. Y.; Kim, Jang-Kyo; Liu, Mingyang]
Appears in Collections:MECH Journal/Magazine Articles
CIVL Journal/Magazine Articles

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