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Flame Retardant Behavior of Ternary Synergistic Systems in Rigid Polyurethane Foams
| Content Provider | Semantic Scholar |
|---|---|
| Author | Xi, Wang Qian, Lijun Li, Linjie |
| Copyright Year | 2019 |
| Abstract | In order to explore flame retardant systems with higher efficiency in rigid polyurethane foams (RPUFs), aluminum hydroxide (ATH), [bis(2-hydroxyethyl)amino]-methyl-phosphonic acid dimethyl ester (BH) and expandable graphite (EG) were employed in RPUF for constructing ternary synergistic flame retardant systems. Compared with binary BH/EG systems and aluminum oxide (AO)/BH/EG, ATH/BH/EG with the same fractions in RPUFs demonstrated an increase in the limited oxygen index value, a decreased peak value of heat release rate, and a decreased mass loss rate. In particular, it inhibited smoke release. During combustion, ATH in ternary systems decomposed and released water, which captured the phosphorus-containing products from pyrolyzed BH to generate polyphosphate. The polyphosphate combined with AO from ATH and the expanded char layer from EG, forming a char layer with a better barrier effect. In ternary systems, ATH, BH, and EG can work together to generate an excellent condensed-phase synergistic flame retardant effect. |
| File Format | PDF HTM / HTML |
| DOI | 10.3390/polym11020207 |
| PubMed reference number | 30960191 |
| Journal | Medline |
| Volume Number | 11 |
| Alternate Webpage(s) | https://res.mdpi.com/polymers/polymers-11-00207/article_deploy/polymers-11-00207-v2.pdf?attachment=1&filename= |
| Alternate Webpage(s) | https://doi.org/10.3390/polym11020207 |
| Journal | Polymers |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
