Abstract
Linz-Donawitz (LD) slag a major solid waste generated in huge quantities during steel making. It comes from slag formers such as burned lime/dolomite and from oxidizing of silica, iron etc. while refining the iron into steel in the LD furnace. Although a number of ways for its utilization have been suggested, its potential as a filler material in polymeric matrices has not yet been explored. The present work reports the possible use of this waste in glass fiber reinforced epoxy composites as a filler material. Hybrid composites consisting of bi-directional E-glass-fiber reinforced epoxy filled with different LD slag content (0, 7.5, 15, 22.5 wt%) are prepared by simple hand lay-up technique. The composites are characterized in regard to their density, porosity, micro-hardness and strength properties. X-ray diffractography is carried out in order to ascertain the various phases present in LDS. This work shows that LD slag, in spite of being a waste, possesses fairly good filler characteristics as it modifies the strength properties and improves the composite micro-hardness of the polymeric resin.
Highlights
Fiber reinforced polymer (FRP) composites have various applications in automobile, aerospace and marine
Various kinds of polymers and polymer matrix composites reinforced with metal particles have a wide range of industrial applications such as heaters, electrodes [5], composites with thermal durability at high temperature [6] etc
E-glass fibers (360 roving taken from Saint Gobian Ltd.) are reinforced in LD slag filled epoxy, chemically belonging to the ‘epoxide’ family is used as the matrix material
Summary
Fiber reinforced polymer (FRP) composites have various applications in automobile, aerospace and marine. FRP composites are applied to inlet cone, fan exit-guide vanes and other parts of structures in a turbofan engine for lightening an engine These composites have generated wide interest in various engineering fields including tribological applications such as cams, clutches, brakes, bearings, wheels, rollers, seals and gears due to their good combination of high specific strength, high modulus, low density and better wear resistance [1]. It is evident from the characteristics of some of these wastes, generated from different processes, that they have good potential for recycling and for utilization in developing various value-added products Against this background, an attempt has been made in this research work to effectively utilize an industrial waste like LD slag as the particulate filler for making composite materials
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