College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao Key Laboratory of Flame-Retardant Textile Materials, Qingdao University, Qingdao 266071, China.
College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao Key Laboratory of Flame-Retardant Textile Materials, Qingdao University, Qingdao 266071, China.
Int J Biol Macromol. 2024 Mar;261(Pt 2):129767. doi: 10.1016/j.ijbiomac.2024.129767. Epub 2024 Feb 1.
A phosphorus‑nitrogen synergistic flame retardant (named POI) was obtained by the chemical reaction between phenylphosphonic acid (PPOA) and polyethyleneimine (PEI), and used to give the flame retardancy of PTCO. The effects of PPOA and POI on various properties of PTCO were investigated. PPOA obviously improved the flame retardancy of PTCO/PPOA, while the breaking force of PTCO/PPOA was greatly reduced. However, the introduction of PEI made the surface of fabrics smoother. PTCO/POI had better flame retardancy than PTCO/PPOA did, and the limiting oxygen index value of PTCO/POI reached to 29.8 %. POI had a good effect on reducing the R of both cotton and polyester components. The phosphoric acid groups in POI can promote the dehydration and carbonization reactions of PTCO, which protects the inner fabrics, and POI can release incombustible gases such as NH and N during burning, which can dilute the oxygen concentration. The flame-retardant mechanism of PTCO/POI was mainly the condensed phase. At the same time, there were no changes in whiteness and mechanical properties compared with those of PTCO, and it also had antibacterial property. This work provides a simple and effective method to prepare flame-retardant and antibacterial PTCO.
一种磷氮协同阻燃剂（命名为 POI）通过苯膦酸（PPOA）和聚乙烯亚胺（PEI）之间的化学反应得到，并用于赋予 PTCO 阻燃性。研究了 PPOA 和 POI 对 PTCO 各种性能的影响。PPOA 明显提高了 PTCO/PPOA 的阻燃性，而 PTCO/PPOA 的断裂力却大大降低。然而，PEI 的引入使织物表面更加光滑。PTCO/POI 比 PTCO/PPOA 具有更好的阻燃性，PTCO/POI 的极限氧指数值达到 29.8%。POI 对降低棉和聚酯成分的 R 值均有良好的效果。POI 中的磷酸基团可以促进 PTCO 的脱水和碳化反应，从而保护内部织物，并且 POI 在燃烧过程中可以释放出不可燃气体如 NH 和 N，可以稀释氧气浓度。PTCO/POI 的阻燃机理主要是凝聚相。同时，与 PTCO 相比，其白度和力学性能没有变化，而且还具有抗菌性能。这项工作为制备阻燃抗菌 PTCO 提供了一种简单有效的方法。
