Flame retardant and anti-dripping surface treatment through a co-deposition of polydopamine/polyphosphonamide for fabric and foam materials
作者：通過共沉積聚多巴胺/聚膦酰胺對織物和泡沫材料進行阻燃和抗滴落表面處理
關鍵字：Flame retardant coating,Co-deposition,Polyphosphonamide,Fabric,Foam
論文來源：期刊
發表時間：2022年
High efficient flame retardant surface treatment through a simple and universal strategy has attracted considerable interest. In this work, polyphosphonamide (PPA) was synthesized via an eco-friendly amine ester exchange reaction, and then the polydopamine-polyphosphonamide (PDA-PPA) coating was constructed by a mussel-inspired phenol-amine co-deposition on the surface of various substrates (cotton, polyethylene terephthalate, poly (lactic acid), polyamide, polypropylene fabrics, and flexible polyurethane foam). It was demonstrated that the PDA-PPA coating significantly improved the flame retardancy of the six substrates. For example, in the case of PDA-PPA coated cotton fabric sample, the limiting oxygen index was increased to 28.3%, the peak of heat release rate and total heat release was decreased by 70.6% and 48.2%, respectively. Especially in the vertical and horizontal burning tests, all PDA-PPA coated samples were self-extinguished and free of molten droplets. It was suggested that the PDA-PPA coating released P-containing radicals to capture active small free radicals and released non-combustible gases to dilute combustible volatiles in the gas phase. In addition, the coating showed excellent intumescent charring ability and promoted the char formation of all substates except polypropylene. Surprisingly, the coating also improved the breaking strength of the PDA-PPA coated fabric and the compressive stress of the PDA-PPA coated foam samples. It was believed that this work provides a scalable and promising strategy for preparing fire safety polymeric materials with a large specific surface area.
通過簡單而通用的策略進行高效阻燃表面處理引起了人們的極大興趣。在這項工作中，通過環保的胺酯交換反應合成了聚膦酰胺（PPA），然后通過貽貝啟發的酚胺共沉積在各種表面上構建了聚多巴胺-聚膦酰胺（PDA-PPA）涂層。基材（棉、聚對苯二甲酸乙二醇酯、聚（乳酸）、聚酰胺、聚丙烯織物和軟質聚氨酯泡沫）。結果表明，PDA-PPA 涂層顯著提高了六種基材的阻燃性。例如，PDA-PPA涂層棉織物樣品的極限氧指數提高到28.3%，放熱率和總放熱峰值分別降低了70.6%和48.2%。特別是在垂直和水平燃燒測試中，所有 PDA-PPA 涂層樣品均能自熄且無熔滴。建議PDA-PPA涂層釋放含P自由基以捕獲活性小自由基，并釋放不可燃氣體以稀釋氣相中的可燃揮發物。此外，該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。所有 PDA-PPA 涂層樣品均能自行熄滅且無熔融液滴。建議PDA-PPA涂層釋放含P自由基以捕獲活性小自由基，并釋放不可燃氣體以稀釋氣相中的可燃揮發物。此外，該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。所有 PDA-PPA 涂層樣品均能自行熄滅且無熔融液滴。建議PDA-PPA涂層釋放含P自由基以捕獲活性小自由基，并釋放不可燃氣體以稀釋氣相中的可燃揮發物。此外，該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。建議PDA-PPA涂層釋放含P自由基以捕獲活性小自由基，并釋放不可燃氣體以稀釋氣相中的可燃揮發物。此外，該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。建議PDA-PPA涂層釋放含P自由基以捕獲活性小自由基，并釋放不可燃氣體以稀釋氣相中的可燃揮發物。此外，該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。該涂料表現出優異的膨脹炭化能力，促進了除聚丙烯以外的所有基體的炭化。令人驚訝的是，該涂層還提高了 PDA-PPA 涂層織物的斷裂強度和 PDA-PPA 涂層泡沫樣品的壓縮應力。人們認為，這項工作為制備具有大比表面積的防火聚合物材料提供了一種可擴展且有前景的策略。