Abstract
The aim of this study was to evaluate the effects of irradiation on structural, mechanical and thermal properties of PAN- carbon fiber composite. The overall applied doses were 250, 500, 750, and 1000 kGy. Irradiated and non-irradiated samples were characterized by Scanning electron microscopy, Fourier transform infrared spectroscopy and differential scanning calorimetry. Tensile strength test was conducted in order to measure mechanical properties. Scanning electron microscopy was used to evaluate microstructural behavior. Thermal behavior of the samples was studied by thermogravimetric analysis and differential scanning calorimetry. The results showed that by increase in Gamma and Electron doses the thermal behavior of the composite indicated higher decomposition degree as a function of temperature. Electron irradiated relatively smoothed surface of carbon fibers than that of virgin fibers and after γ treatment the bulges were decreased and surface was unrough.
Highlights
Composite material is a system composed of two or more macro constituents differing in form and/or composition that are essentially immiscible in each other [1, 2]
At radiation dose of 1.0 MGy, shown in Figure 1 (e) and (f), the surface was unrough and some failures were observed. It suggested that the action of gamma and electron beam irradiation on composites promoted degradation of polymer chains
The effect of gamma ray and electron beam irradiation on the structure and mechanical properties of carbon fiber (CF) composites were characterized by microstructural analysis
Summary
Composite material is a system composed of two or more macro constituents differing in form and/or composition that are essentially immiscible in each other [1, 2]. The composite material consists of a binder or a matrix that surrounds and holds reinforcements at a place. ● 2016 separate characteristics of the matrix and the reinforcements contribute synergistically to overall properties of the composite material [3,4,5]. The interface between the fiber and the matrix is an important aspect in control of the overall properties of the composite [6]
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