Abstract
Thermal behavior of hybrid epoxy composites reinforced with different types of plain weave fabrics and ply orientation at various angles was investigated in this research. It was analyzed their thermal linear expansion coefficient and specific heat measured with Thermomechanical Analyzer (TMA) and Differential Scanning Calorimeter (DSC) respectively. Also, in this paper was studied the influence of carbon black - aramid powder and carbon black - barium ferrite mixtures added into epoxy matrix between certain plies of the hybrid composites. The experimental results showed that the addition of filler mixtures led to a significant decreasing of thermal expansion coefficient and specific heat of the hybrid epoxy composite with carbon outer plies. It was recorded a good structural stability in case of hybrid carbon-glass composite in the temperature range of 40-60�C.
Highlights
The polymeric composites are lightweight advanced multifunctional engineering materials used in all the domains due to their properties and low cost
Based on the curves obtained after the performed thermal measurements, the values of linear expansion coefficient and specific heat of hybrid epoxy composites were calculated in the temperature ranges of 40-60°C and 110-170°C
The thermal parameters, as thermal linear expansion coefficient and specific heat of fabric reinforced hybrid epoxy composites with ply orientation at various angles measured by Thermomechanical Analysis (TMA) and Differential Scanning Calorimeter (DSC), respectively, were studied
Summary
The polymeric composites are lightweight advanced multifunctional engineering materials used in all the domains due to their properties and low cost. Their superior characteristics are obtained by combination of the advantageous and desirable properties of their structural constituents. The composite materials are used in application with variations in temperature. In this case it is known that with the temperature increasing grows their ductility and with the temperature decreasing grows their fragility. Most often in application with variation in temperature composite materials with epoxy matrix are used. These epoxy matrix can be modified by addition of metallic (aluminum [1, 2], copper [3, 4], nickel [5], silver [6, 7], etc.), ceramic (alumina [8, 9], silicon carbide [10,11], boron nitride [9, 12], halloysite nanotubes [13] etc.) or carbonaceous (single- [14] or multi-walled [15,16,17] carbon nanotubes [18], graphene [6, 15, 16, 18,19,20], carbon black [18, 21, 22], graphite [11, 15, 18]) fillers
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