Abstract

This paper has been studied some mechanical and physical properties of fortified epoxy resin with nanomaterials. The mixture of the highest shock resistance was chosen as a mixture of (Ep 80% + PVC 20%) , which was used as a starting material in preparing research samples. The manual molding method was used in the preparation of the molds as follows (unfortified polymeric mixture, the polymeric mixture fortified with zirconia in ratio (1% wt), the polymeric mixture fortified with zirconia in ratio (2% wt) ), which have been subjected to the mechanical (shock resistance, hardness, tensile strength, bending strength) and the physical (thermal conductivity coefficient (k), and absorbency of solutions). This was done in natural conditions (before immersion). The results of the tests showed that the polymer mixture has the highest bending strength and thermal conductivity coefficient value . The fortifyingment with zirconia nanopowder had a clear influence on the mechanical and physical properties of the combined material, as the fortified composites recorded with a ratio of (2% wt) with the highest shock resistance, surface hardness, and tensile strength. After being immersed in normal water (tap water) and a basic solution (NaoH) at a concentration of (0.5 N) for a period of (8) weeks, it showed a negatively affect by both its mechanical and physical properties. This is with the exception of the increase in shock resistance when immersed in regular water, as well as an increase in the value of bending strength when immersed in regular water and with the basic solution, as for the surface hardness, tensile strength and thermal conductivity coefficient. We also notice a gradual and variable decrease in the values as long as they are immersed in regular water and the basic solution, and the shock resistance is added to them, as well as a decrease in their values when immersed in the basic solution. Concerning the absorbance percentage, the samples were immersed in normal water, basic solution, distilled water, kerosene, diesel, gasoline, alcohol solution and acid solution, so the distilled water was the most absorbent, and then the normal water was for the fortified compound by (2%). Whereas the least absorbing samples is the polymeric mixture (Ep + PVC) and the most solutions that led to the dissolution of the samples is the acid solution (HCl) at a concentration of (0.5 N), and gradually; alcohol, gasoline, diesel, kerosene, and finally the basic solution (NaoH).

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The article was added to IASJ on 2022-09-17

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