In this study, coal ash/recycled plastic composite material was fabricated with post-consumer high-density polyethylene (HDPE) and coal ash particles. The main idea of using coal ash, since it is also a waste product, as reinforcing filler in recycled HDPE is to reduce the cost, develop lightweight and produce environmental-friendly materials. Coal ash/recycled plastic composite have been used in significant applications as construction materials including flooring, landscaping, fencing, railing window framing and roof tiles. Effect of coal ash loading on the mechanical properties and thermal conductivity of coal ash/recycled HDPE composite were determined. It is expected to use waste materials in new field by getting novel composite materials with developed mechanical properties. It was found that coal ash filler indicated significant improvement on the mechanical properties of composites. The results show that the impact decreased tremendously from 57.32 to 15.8[Formula: see text]kJ/m2 with only 30[Formula: see text]wt.% loading of coal ash. The filler increases the elasticity of the material and reduces its ability to absorb deformation energy.
Nanocomposites of polymer material based on CdS as fillermaterial and poly methyl methacrylate (PMMA) as host matrix havebeen fabricated by chemical spray pyrolysis method on glasssubstrate. CdS particles synthesized by co-precipitation route usingcadimium chloride and thioacetamide as starting materials andammonium hydroxide as precipitating agent. The structure isexamined by X-ray diffraction (XRD), the resultant film hasamorphous structure. The optical energy gap is found to be (4.5,4.06) eV before and after CdS addition, respectively. Electricalactivation energy for CdS/PMMA has two regions with values of0.079 and 0.433 eV.
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