Abstract
The interfacial adhesion between glass fibre, epoxy matrix and silicon carbide particulate filler (SiCp) is improved by directly incorporating (3-Aminopropyl) trimethoxysilane coupling agent in the epoxy matrix. The quantity of SiCp was varied by (0, 5 and 10 wt.%) to synthesize composites with three different compositions. The tensile, flexural and impact strengths of these composites have been investigated according to ASTM standards. For a comparison, the properties of untreated epoxy matrix composites with the same composition were evaluated under identical test conditions. Silane treated epoxy matrix composites had better mechanical properties than untreated epoxy matrix composites. Incorporation of SiCp in the epoxy matrix enhanced its mechanical properties. Uniformly distributed SiCp increased the stiffness of the epoxy matrix. Also, the strong interface created by the coupling agent effectively transfers the stress from epoxy matrix to the glass fibre. SEM (Scanning Electron Microscope) microphotographs of treated and untreated composites support these observations.
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