Zhou Ru, Sun Xiaoyan, Xie Juan, Ma Gang, Li Wen-Juan, Jiang Jun-Cheng, Shu Chi-Min
Jiangsu Key Laboratory of Urban and Industrial Safety, College of Safety Science and Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, People's Republic of China.
Taizhou Special Equipment Inspection and Testing Research Institute, Taizhou 318000, Zhejiang, People's Republic of China.
ACS Omega. 2022 May 10;7(20):16980-16989. doi: 10.1021/acsomega.1c07246. eCollection 2022 May 24.
To facilitate the flame retardancy of phenolic resin (PF), a series of novel flame retardants with nano-SiO, melamine, and aluminum diethylphosphinate (ADP) were freshly prepared and tested. A thermogravimetric analysis, cone calorimeter, and scanning electron microscopy were employed to determine the thermal decomposition, flame retardancy, combustion properties, and structure of the carbon residue layer of PF. The pyrolysis kinetic parameters of modified PF were then computed, and the pyrolysis process was appraised. The results indicated that when 1.5 wt % of nano-SiO, 3 wt % of melamine, and 15 wt % of ADP were added to PF, the limiting oxygen index value reached 39.6%, and UL-94 passed the V-0 level. A substantial synergistic effect was also observed. The thermogravimetric analysis revealed that the char residue at 800 °C reached 59.93 wt %. Furthermore, in the cone calorimeter test, the total thermal release and thermal release rate decreased to 30.7 MJ/m and 105.7 kW/m, respectively.
为提高酚醛树脂（PF）的阻燃性，新制备并测试了一系列含有纳米二氧化硅、三聚氰胺和二乙基次膦酸铝（ADP）的新型阻燃剂。采用热重分析、锥形量热仪和扫描电子显微镜来测定PF的热分解、阻燃性、燃烧性能以及残炭层结构。随后计算了改性PF的热解动力学参数，并对热解过程进行了评估。结果表明，当向PF中添加1.5 wt%的纳米二氧化硅、3 wt%的三聚氰胺和15 wt%的ADP时，极限氧指数值达到39.6%，且UL-94达到V-0级。还观察到显著的协同效应。热重分析表明，800℃时的残炭率达到59.93 wt%。此外，在锥形量热仪测试中，总热释放量和热释放速率分别降至30.7 MJ/m³和105.7 kW/m²。
