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https://hdl.handle.net/2440/135532
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Type: | Journal article |
Title: | A bio-based ionic complex with different oxidation states of phosphorus for reducing flammability and smoke release of epoxy resins |
Author: | Fang, F. Huo, S. Shen, H. Ran, S. Wang, H. Song, P. Fang, Z. |
Citation: | COMPOSITES COMMUNICATIONS, 2020; 17:104-108 |
Publisher: | Elsevier BV |
Issue Date: | 2020 |
ISSN: | 2452-2139 |
Statement of Responsibility: | Fang Fang, Siqi Huo, Haifeng Shen, Shiya Ran, Hao Wang, Pingan Song, Zhengping Fang |
Abstract: | Developing high efficient, environmentally friendly and bio-based flame retardants for combustible polymers has gained increasing interest. Herein, a novel highly efficient biomass-derived flame retardant (EHPP@PA) with different oxidation state phosphorus is prepared via neutralization of phytic acid (PA) and phenylphosphonate- based compound (EHPP). Due to synergistic effect between PA and EHPP, the incorporation of EHPP@PA significantly improves the flame-retardant performances of epoxy resin (EP), bringing about 64% reduction in peak heat release rate (pHRR) and 16% reduction in total heat release (THR). Additionally, EP/EHPP@PA also displays excellent smoke suppression performance, exhibiting 45% reduction in peak CO production (pCOP), 61% reduction in peak smoke release production rate (pSPR), and 21% reduction in total smoke production (TSP). The flame-retardant mechanism of EHPP@PA is further investigated, indicating that EHPP@PA effectively exerts flame-retardant effect in the condensed and gaseous phases during combustion. In the condensed phase, phytic acid facilitates the formation of a protective char shield, while in the gas phase, EHPP releases PO⋅ and NO⋅ to quench active radicals and inhibits the combustion. |
Keywords: | Epoxy resin; Phosphorus containing flame retardant; Ionic complexation |
Rights: | © 2019 Elsevier Ltd. All rights reserved. |
DOI: | 10.1016/j.coco.2019.11.011 |
Grant ID: | http://purl.org/au-research/grants/arc/DP1901002992 http://purl.org/au-research/grants/arc/FT190100188 |
Published version: | http://dx.doi.org/10.1016/j.coco.2019.11.011 |
Appears in Collections: | Chemical Engineering publications |
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