A novel zinc chelate complex containing both phosphorus and nitrogen for improving the flame retardancy of low density polyethylene
Article
Article Title | A novel zinc chelate complex containing both phosphorus and nitrogen for improving the flame retardancy of low density polyethylene |
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ERA Journal ID | 1633 |
Article Category | Article |
Authors | Cao, Zhenhu (Author), Zhang, Yan (Author), Song, Pingan (Author), Cai, Yuanzheng (Author), Guo, Qi (Author), Fang, Zhengping (Author) and Peng, Mao (Author) |
Journal Title | Journal of Analytical and Applied Pyrolysis |
Journal Citation | 92 (2), pp. 339-346 |
Number of Pages | 8 |
Year | 2011 |
Place of Publication | Netherlands |
ISSN | 0165-2370 |
1873-250X | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jaap.2011.07.007 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0165237011001276 |
Abstract | A novel metal chelate complex containing phosphorus, nitrogen and zinc (II) ion was synthesized and used as the flame retardant of low density polyethylene (LDPE). The zinc chelate complex was synthesized by reacting zinc acetate with the ligand of tetraethyl (1,2-phenylenebis(azanediyl)) bis (2- hydroxylphenylmethylene) diphosphonate (TEPAPM). The chemical structure of the target Zn-TEPAPM was confirmed by FTIR, 1H NMR, 13C NMR and 31P NMR spectra. The flame retardancy and thermal behavior of LDPE containing various amount of Zn-TEPAPM were investigated by limiting oxygen index test, thermogravimetric (TG) analysis and cone calorimetry. The results show that Zn-TEPAPM can greatly increase the thermal stability, the char formation and smoke suppression ability of LDPE. The TG curves show that even when the filler content of Zn-TEPAPM is as low as 1 wt% in LDPE, the onset degradation temperature of LDPE is increased from 429 °C to 442 °C, and the maximum degradation temperature is increased from 469 °C to 488 °C. Also, a reduction of 32% for the peak heat release rate (PHRR) is obtained in the cone test. Moreover, Zn-TEPAPM is demonstrated to be a very effective synergist of ammonium polyphosphate (APP). When 1 wt% of Zn-TEPAPM was introduced into the LDPE/APP (mass ratio 80/19) blend, the PHRR value is reduced by 32%, compared with that of LDPE/APP blend without Zn-TEPAPM, and the char layer becomes more compact and intact. |
Keywords | Zn chelate; Aminophosphite; low density polyethylene;flame retardant |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 340305. Physical properties of materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Zhejiang University, China |
Zhejiang A & F University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4134/a-novel-zinc-chelate-complex-containing-both-phosphorus-and-nitrogen-for-improving-the-flame-retardancy-of-low-density-polyethylene
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