Effect of Hcl acid on the physical properties of Hybrid / Epoxy nanocomposites

Abstract

In this research a nanocomposites were prepared from epoxy resin reinforced by Titanium dioxide ($\text{TiO}_2$) and Zinc Oxide (ZnO) nanopowders with grain size (10-30nm) and ($\text{TiO}_2$+ZnO) hybrid using Hand Lay – up molding. The specimens were prepared according to (ASTM) specifications. Impact Strength, Bending Strength were studied pre and after immersion in HCL (0.5 N & 1 N). Effect and absorption of these solutions were studied also .The results showed that the [EP+ZnO] composite has higher impact strength (6.82 kJ/m2) compared with [EP+$\text{TiO}_2$] (2.67kJ/m2), while the hybrid [EP+ (ZnO+$\text{TiO}_2$)] composite has a value in between. While, the hybrid composite has a higher modulus of elasticity (1385.69 Mpa) followed by [EP+ZnO] (1256.25 Mpa), and higher than [EP+$\text{TiO}_2$] which owned (1029.35 Mpa) modulus of elasticity .After immersion in HCL, it showed that the impact strength, and young modulus were decreased for all samples. The hybrid composite was the least affecting by the acid solution. The higher absorption was for the [EP+$\text{TiO}_2$] composites.