Preparation of a Reactive Phosphorus/nitrogen-Based Intumescent Flame Retardant Coating for Cotton Fabrics
| Autor: | Ying-Jun Gao, Wen-Jie Jin, Bi-Qing Hu, Xian-Wei Cheng, Jin-Ping Guan |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Journal of Natural Fibers, Vol 20, Iss 1 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1544-0478 1544-046X 15440478 21957592 |
| DOI: | 10.1080/15440478.2022.2153195 |
| Popis: | This study focuses on the synthesis of a reactive phosphorus-/nitrogen-based intumescent flame retardant (IFR) agent using diethyl phosphite, urea, and glutaraldehyde through Kabachnik-Fields reaction. We further studied the potential applications in IFR modification of cotton fabrics through surface coating approach. The chemical structure of IFR agent and its potential grafting action with cotton fibers were characterized. The thermal stability, smoke and heat release performance, flame retardancy, and durability of the IFR-coated cotton fabrics were explored. Char residue analyses were also performed to confirm the FR mechanism of IFR coating. The results revealed that IFR coating significantly inhibited the heat and smoke generation of cotton. The IFR coating showed high functional efficiency due to phosphorus/nitrogen synergism. The IFR-coated fabrics passed vertical burning B1 level and obtained an limiting oxygen index (LOI) value of higher than 32.0%. The introduction of IFR coating to cotton by covalent bonds imparted excellent washing resistance to cotton as indicated by the self-extinguishing action of the IFR-coated cotton fabrics after 10 launderings. In general, the present study offers a novel strategy to prepare reactive and efficient IFR coating for cellulose-based textiles. |
| Databáze: | Directory of Open Access Journals |
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