Song, Pingan and Fang, Zhengping and Tong, Lifang and Jin, Yongming and Lu, Fengzhu (2008) Effects of metal chelates on a novel oligomeric intumescent flame retardant system for polypropylene. Journal of Analytical and Applied Pyrolysis, 82 (2). pp. 286-291. ISSN 0165-2370
Abstract
A novel oligomeric phosphorus-nitrogen containing intumescent flame retardant, poly(4,4-diamino diphenyl methane-O-bicydicpentaerythritol phosphate-phosphate) (PDBPP), was synthesized and characterized. Effects of metal chelates on flame retardancy of polypropylene (PP)/PDBPP systems were studied and the results showed that the presence of metal chelates considerably enhanced the fire retardant performance as evidenced by the increase of LOI values and a great reduction in peak heat release rate of PP/PDBPP system. Raman spectroscopy, infrared spectroscopy and scanning electron microscopy demonstrated that metal chelates could react with polyphosphoric acid, a decomposition product of PDBPP, to form crosslinked network. Through salt bridges a more compact char layer was formed which was responsible for the improved thermal and flame retardancy properties of PP/PDBPP system.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Files associated with this item cannot be displayed due to copyright restrictions. |
| Faculty/School / Institute/Centre: | No Faculty |
| Date Deposited: | 08 Aug 2019 04:33 |
| Last Modified: | 09 Aug 2019 05:18 |
| Uncontrolled Keywords: | polypropylene, intumescent flame retardant, metal chelates, flammability |
| Fields of Research : | 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified |
| Socio-Economic Objective: | B Economic Development > 86 Manufacturing > 8699 Other Manufacturing > 869999 Manufacturing not elsewhere classified |
| Identification Number or DOI: | 10.1016/j.jaap.2008.04.008 |
| URI: | http://eprints.usq.edu.au/id/eprint/35601 |
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