Abstract
A composite material has been prepared using epoxy resin as a matrix, reinforced with silica fume, carbon fiber, and their hybrid (mixture of silica fume and carbon fiber). Samples were prepared in a fabricated mold with dimensions according to the American Standards for Testing and Materials (ASTM). The additions of silica fume, carbon fiber, and mixture of them were with weight ratios of 0.5, 1, 1.5, 2, 2.5 and 3 wt.%. Properties of this composite material are determined; hardness, compression, and ultrasonic. The results showed that the mechanical properties increases with increasing of silica fume ratio up to 2 wt.%, and for higher than of 2 wt.% they were decrease, whereas the addition of carbon fiber and mixture of carbon fiber with silica fume powder correspondingly enhances the properties up to 2 wt.% and fixed on its values.
Highlights
IntroductionOwing to its inherent brittleness (derived from a highly cross linked structure) epoxy resins are used as a matrix phase in conjunction with other material; dispersed phase (reinforcement) to combine the advantage, of their properties in a composite material with an extended engineering applications.The term epoxy resin describes a wide range of thermosetting polymers in which the main cross linking occurs through the reaction of an epoxide group
Owing to its inherent brittleness epoxy resins are used as a matrix phase in conjunction with other material; dispersed phase to combine the advantage, of their properties in a composite material with an extended engineering applications.The term epoxy resin describes a wide range of thermosetting polymers in which the main cross linking occurs through the reaction of an epoxide group
The results showed that the mechanical properties increases with increasing of silica fume ratio up to 2 wt.%, and for higher than of 2 wt.% they were decrease, whereas the addition of carbon fiber and mixture of carbon fiber with silica fume powder correspondingly enhances the properties up to 2 wt.% and fixed on its values
Summary
Owing to its inherent brittleness (derived from a highly cross linked structure) epoxy resins are used as a matrix phase in conjunction with other material; dispersed phase (reinforcement) to combine the advantage, of their properties in a composite material with an extended engineering applications.The term epoxy resin describes a wide range of thermosetting polymers in which the main cross linking occurs through the reaction of an epoxide group. Owing to its inherent brittleness (derived from a highly cross linked structure) epoxy resins are used as a matrix phase in conjunction with other material; dispersed phase (reinforcement) to combine the advantage, of their properties in a composite material with an extended engineering applications. The composite materials are used due to their characteristics structure, besides to physical (electrical, thermal, etc.) and mechanical properties (hardness, tensile strength, etc.), which make them of wide range applications. Ruban et al [5] indicated that the unsaturated polyester into epoxy resin bettering the impact strength. Significant enhancement in the impact strength, tensile properties, and flexural properties are noticed in the unsaturated polyester – epoxy mixes with rise in the percentage of amine – modified nanosilica particles. The results of Al- Khfaji [6] showed the values of hardness increased with volume fraction of boron powder in polyester resin, the best values
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