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Thermal Stability of Epoxy- Metallic Polyurea Complexes | ||
| Rafidain Journal of Science | ||
| Article 9, Volume 18, Issue 4, 2007, Pages 88-101 PDF (0 K) | ||
| DOI: 10.33899/rjs.2007.42715 | ||
| Authors | ||
| Mahmood M. Al- Duleemy; Akram A. Mohamed | ||
| Abstract | ||
| In this work, thermal stability of epoxy resin blended with polyurea- metal complexes were investigated using (TGA) and compared with the non- blended polyurea complexes. It was found that the polyureas alone exhibit thermal stability between 250-310 ْ C. The values of IDT decreased in the order PBU>POU> PPU>PTU, while the values of MDT is much closer to each other in the rang 335- 350 ْ C. The differences between TGA thermograms appeared in polyurea complexes were approximately diminished in epoxy blend thermograms especially in the region 300-500ْ C. The complete decomposition temperature for the blends are more than 600ْ C whilest, this temperature not exceeds 400 ْ C for epoxy resin alone. The average reference values IDT, MDT and (W%) 350 are 118ْ C, 386ْ C and 62% respectively for the untreated samples and raised to 180ْ C , 590 ْ C and 86% respectively for (alkaline or acidic ) treated blends. | ||
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