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Water ingression and the role of interface on the compressive properties of epoxy filled with treated fly ash

Kulkarni, SM and Mahajan, SS and Ravikumar, NL and Kishore, * (2002) Water ingression and the role of interface on the compressive properties of epoxy filled with treated fly ash. In: Composite Interfaces, 9 (5). 459-466 .

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Polymer composites are generally filled with either fibrous or particulate materials to improve the mechanical properties. In choosing the fillers one looks for materials that are inexpensive and available in abundance, in order to realize a cost reduction also. Also, often these fibres/fillers are treated to improve the matrix adhesion and thereby mechanical properties. The present study is focussed on the influence of water ingression in such filler-modified composites and the attendant changes in the compressive properties. The changes in property effected following exposure to aqueous media and the influence interface modification has on the scenario is emphasized in the work. It is seen that for plain epoxy and fly ash filled systems the strengths are increased following exposure to aqueous media. The composites with surface-treated ash particles, on the other hand, record a drop in the values. Modulus values show are increased to varying degree in unfilled and filled systems. The study also includes a fractographic analysis of the tested samples with and without exposure to water.

Item Type: Journal Article
Publication: Composite Interfaces
Publisher: Brill
Additional Information: Copyright of this article belongs to Brill.
Keywords: epoxy;fly ash;surface treatment;silane coupling;water absorption;sem.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 02 Aug 2011 07:50
Last Modified: 02 Aug 2011 07:50
URI: http://eprints.iisc.ac.in/id/eprint/39660

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