Synergistic effect of LDH in the presence of organophosphate on thermal and flammable properties of an epoxy nanocomposite
| Autor: | Ivmv Enoch, G. Tamil Selvan, A. Joel Samson, P. Mosae Selvakumar, Pawan Kumar Kaul |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Thermal oxidation Nanocomposite Polymer nanocomposite Layered double hydroxides Geology 02 engineering and technology Polymer Epoxy engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pentaerythritol 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Geochemistry and Petrology visual_art visual_art.visual_art_medium engineering Organic chemistry Hydroxide 0210 nano-technology |
| Zdroj: | Applied Clay Science. 135:234-243 |
| ISSN: | 0169-1317 |
| Popis: | Dodecyl sulphate (DDS) intercalated magnesium aluminium layered double hydroxide (MgAl DS LDH) and the melamine salt of pentaerythritol diphosphate (MPP) were synthesized and used as additives for the preparation of epoxy nanocomposites. The properties of the additives and their epoxy polymer nanocomposites were characterised by X-ray diffractometer (XRD), FTIR, 1H NMR, 13C NMR, 31P NMR, SEM, TEM, TGA, Limited Oxygen Index (LOI) and Underwriters Laboratories-94 Test (UL-94). The MgAl DS LDH additions to the MPP in the epoxy resin protect the polymer from thermal oxidation, which was shown by a stable enhancement of the thermal and flammable properties of the nanocomposites. Due to the presence of MgAl DS LDH, the epoxy nanocomposites developed a rigid and dense upper layer, with stable charring, which prevented the escape of the decomposed flammable volatiles and protected the lower layer of the nanocomposites from further decomposition. This char was characterized by FTIR. MgAl DS LDH shows a synergistic effect in the thermal and flammable properties of an epoxy nanocomposite, in the presence of MPP. |
| Databáze: | OpenAIRE |
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