Flame retardant and anti-dripping surface treatment through a co-deposition of polydopamine/polyphosphonamide for fabric and foam materials
作者:通过共沉积聚多巴胺/聚膦酰胺对织物和泡沫材料进行阻燃和抗滴落表面处理
关键字:Flame retardant coating,Co-deposition,Polyphosphonamide,Fabric,Foam
论文来源:期刊
发表时间: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.
通过简单而通用的策略进行高效阻燃表面处理引起了人们的极大兴趣。在这项工作中,通过环保的胺酯交换反应合成了聚膦酰胺(PPA),然后通过贻贝启发的酚胺共沉积在各种表面上构建了聚多巴胺-聚膦酰胺(PDA-PPA)涂层。基材(棉、聚对苯二甲酸乙二醇酯、聚(乳酸)、聚酰胺、聚丙烯织物和软质聚氨酯泡沫)。结果表明,PDA-PPA 涂层显着提高了六种基材的阻燃性。例如,PDA-PPA涂层棉织物样品的极限氧指数提高到28.3%,放热率和总放热峰值分别降低了70.6%和48.2%。特别是在垂直和水平燃烧测试中,所有 PDA-PPA 涂层样品均能自熄且无熔滴。建议PDA-PPA涂层释放含P自由基以捕获活性小自由基,并释放不可燃气体以稀释气相中的可燃挥发物。此外,该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。所有 PDA-PPA 涂层样品均能自行熄灭且无熔融液滴。建议PDA-PPA涂层释放含P自由基以捕获活性小自由基,并释放不可燃气体以稀释气相中的可燃挥发物。此外,该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。所有 PDA-PPA 涂层样品均能自行熄灭且无熔融液滴。建议PDA-PPA涂层释放含P自由基以捕获活性小自由基,并释放不可燃气体以稀释气相中的可燃挥发物。此外,该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。建议PDA-PPA涂层释放含P自由基以捕获活性小自由基,并释放不可燃气体以稀释气相中的可燃挥发物。此外,该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。建议PDA-PPA涂层释放含P自由基以捕获活性小自由基,并释放不可燃气体以稀释气相中的可燃挥发物。此外,该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。该涂料表现出优异的膨胀炭化能力,促进了除聚丙烯以外的所有基体的炭化。令人惊讶的是,该涂层还提高了 PDA-PPA 涂层织物的断裂强度和 PDA-PPA 涂层泡沫样品的压缩应力。人们认为,这项工作为制备具有大比表面积的防火聚合物材料提供了一种可扩展且有前景的策略。