Lan Fengying, Chen Hongfei, Ji Gongze, Chen Chen, Luan Jiaxi, Wang Shuangyue, Dong Chaohong, Lu Zhou
College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China.
Institute of Functional Textiles and Advanced Materials, College of Textile and Clothing, State Key Laboratory of Bio-fibers and Eco-textiles, Qingdao University, Qingdao 266071, PR China.
Int J Biol Macromol. 2025 Apr;301:140365. doi: 10.1016/j.ijbiomac.2025.140365. Epub 2025 Jan 26.
The synthesis of highly efficient and environmentally friendly flame retardants through the synergistic interaction of boron, phosphorus and nitrogen is becoming a new research direction. In this study, N-DBSPA, a flame retardant with high flame retardancy, high thermal stability and high efficiency, was prepared by the reaction between pentaerythritol borate and amino trimethylene phosphate, and the limiting oxygen index (LOI) of the modified cotton fabric increased from 18 % to 44.7 % at a weight gain (WG) of 20.4 %. After 50 wash cycles (LCs), it still reached 34.2 % and passed the Vertical Flame Test (VFT), indicating good flame retardancy and wash resistance. Cone Calorimetry Test (CCT) showed a 90.2 % reduction in Peak Heat Release Rate (PHRR) and a 32.9 % reduction in Total Heat Release (THR). The thermogravimetric test (TG) showed an increase in the charring residue of cotton fabrics from 10.9 % to 36.2 % at 750 °C in a nitrogen atmosphere. Finally, the flame retardant mechanism of the modified cotton fibers was speculated from the condensed phase and gas phase, respectively.
通过硼、磷和氮的协同作用合成高效且环保的阻燃剂正成为一个新的研究方向。在本研究中，通过季戊四醇硼酸酯与氨基三亚甲基磷酸反应制备了具有高阻燃性、高热稳定性和高效性的阻燃剂N-DBSPA，在增重20.4%时，改性棉织物的极限氧指数（LOI）从18%提高到44.7%。经过50次洗涤循环后，其仍达到34.2%并通过垂直燃烧试验（VFT），表明具有良好的阻燃性和耐洗性。锥形量热试验（CCT）显示热释放峰值速率（PHRR）降低了90.2%，总热释放（THR）降低了32.9%。热重试验（TG）表明，在氮气气氛中，750℃时棉织物的炭化残渣从10.9%增加到36.2%。最后，分别从凝聚相和气相推测了改性棉纤维的阻燃机理。
