An amino trimethylene phosphonic acid‐based chelated boric acid complex that works as a synergistic flame retardant for enhancing the flame retardancy of cotton fabrics

作者：Wenju Zhu, Mingyang Yang, Qing Wang, Xiaohan Zhang, Dongxiang Li, Zelong Xu, Shuixia Liu, Zhao Dai · 发表于：Journal of the Chinese Chemical Society · 年份：2023 · DOI：10.1002/jccs.202200525 · 被引用次数：19 · 研究领域：Flame retardant materials and properties、Fire dynamics and safety research

Abstract The chelating ligands of boric acid and amino trimethyl phosphonate prepared a novel flame retardant (BAP) for the cotton fabric. A stable chemical and coordination bond was formed on the surface of the cotton fibers by a simple three‐curing finishing process to make the fabric exhibits excellent durable flame retardancy. Cotton fabrics' tensile strength and whiteness got substantially retained after BAP treatment. 90 g/L BAP‐treated samples (3 curing times, 50 laundry cycles) showed good flame retardancy and durability, holding the largest limit oxygen index, 29.7%, and the shortest damage length, 61 mm. A condensed phase and gas phase synergistic flame retardant mechanism was concluded by thermogravimetric, cone calorimeter tests, and thermogravimetric infrared analysis.