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"STUDYING THE EFFECT OF NITRIC ACID ON REINFORCED AND UNREINFORCED UNSATURATED POLYESTER " | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 11, Issue 2, 2011, Pages 380-391 | ||
| Authors | ||
| Zainab F.Kadum; Lena F. Kadum | ||
| Abstract | ||
| Abstract:- The aim of this work is to study the effect of different concentrations of nitric acid (20%,40%,60)for each 100ml of distilled water on unsaturated polyester and composite material. The composite material consists of unsaturated polyester reinforced with powder of aluminum at (0.1, 0.25, 0.5)wt% for (2-10) days. Nitric acid affects on unsaturated polyester through: physical degradation which represents by yellowish of polymer, swelling, the formation of pits, and hydrolytic corrosion. The presence of aluminum powder will inhibit the molecules of solution from penetration into the cross-linked polymeric chains and consequently will decrease the swelling at 0.1 wt% but the reinforcement with greater ratios of aluminum powder will lead to increase in weight. | ||
| Keywords | ||
| nitric acid; unsaturated epoxy; composite material | ||
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