Zhou Hao, Liang Mengxiao, Lu Yonghua, Li Hejun, Li Tian, Zhang Guangxian
State Key Laboratory of Resource Insects, College of Sericulture Textile and Biomass Sciences, Southwest University, No.2 Tiansheng Street, Beibei, Chongqing 400715, PR China.
State Key Laboratory of Resource Insects, College of Sericulture Textile and Biomass Sciences, Southwest University, No.2 Tiansheng Street, Beibei, Chongqing 400715, PR China.
Int J Biol Macromol. 2025 Jul;318(Pt 3):145140. doi: 10.1016/j.ijbiomac.2025.145140. Epub 2025 Jun 10.
A starch-based, durable phosphorus flame retardant, ((bis((dimethoxy phosphoryl)methyl)(hydroxymethyl)phosphonio)methyl)-1,10-bis(dimethoxyphosphoryl)-4,7-diaza-2,9-diphosphadecane (BMPTHD), was synthesized. The structure of the flame retardant BMPTHD was analyzed using NMR and FTIR. These test results indicated that the BMPTHD was successfully synthesized. After treatment, the limiting oxygen index (LOI) values of the cotton fabric increased from 17.9 % to 39.6 %, the total heat release (THR) decreased 49.29 %, the flame growth rate (FGR) slowed down by 81.02 %, showing good flame retardancy and passing the vertical flame test (VFT). The Thermogravimetric analysis (TG) test results show that after flame retardant treatment, the char residue rate of the fabric in N atmosphere has significantly increased from 1.13 % to 38.17 %. Under O atmosphere, the char residue rate also increased from 0.01 % to 7.34 %. After undergoing 50 laundering cycles (LCs) in accordance with the NFPA 2112-2012 washing standard, the cotton fabric can still pass the VFT, demonstrating significant flame retardant durability. The cone calorimetry test (CCT) results indicate that BMPTHD effectively slows down the peak heat release rate (PHRR), reduces the total heat release (THR), and hinders the spread of the flame. In thermogravimetric (TG) tests and thermogravimetric infrared (TG-IR) tests, the residue from CN-BMPTHD treated fabric was significantly higher than that of untreated cotton, and the production of combustible gases was reduced. This indicates that BMPTHD is a condensed-phase flame retardant.
合成了一种淀粉基耐久性磷系阻燃剂，即((双((二甲氧基磷酰基)甲基)(羟甲基)膦酰基)甲基)-1,10-双(二甲氧基磷酰基)-4,7-二氮杂-2,9-二磷癸烷(BMPTHD)。采用核磁共振(NMR)和傅里叶变换红外光谱(FTIR)对阻燃剂BMPTHD的结构进行了分析。这些测试结果表明BMPTHD已成功合成。处理后，棉织物的极限氧指数(LOI)值从17.9%提高到39.6%，总热释放(THR)降低49.29%，火焰蔓延速率(FGR)减缓81.02%，显示出良好的阻燃性并通过垂直燃烧试验(VFT)。热重分析(TG)测试结果表明，阻燃处理后，织物在N气氛中的残炭率从1.13%显著提高到38.17%。在O气氛下，残炭率也从0.01%提高到7.34%。按照NFPA 2112-2012洗涤标准进行50次洗涤循环(LCs)后，棉织物仍能通过VFT，显示出显著的阻燃耐久性。锥形量热法测试(CCT)结果表明，BMPTHD有效地减缓了热释放峰值速率(PHRR)，降低了总热释放(THR)，并阻碍了火焰的蔓延。在热重(TG)测试和热重红外(TG-IR)测试中，经CN-BMPTHD处理的织物的残渣明显高于未处理的棉织物，可燃气体的产生减少。这表明BMPTHD是一种凝聚相阻燃剂。
