Shi Yilun, Wang Zhengzhou, Zhou Jian-An
School of Materials Science and Engineering, Tongji University Shanghai 201804 People's Republic of China
Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education Shanghai 201804 People's Republic of China.
RSC Adv. 2018 Nov 23;8(68):39214-39221. doi: 10.1039/c8ra08696f. eCollection 2018 Nov 16.
A flame retardant melamine phenylphosphate (MPhP) was facilely synthesized by the reaction of phenylphosphoric acid (PPA) and melamine (MEL), and was characterized by FTIR and NMR. Epoxy resin (EP) composites containing MPhP were prepared, and the effect of MPhP content on flame retardancy, smoke suppression, mechanical properties and thermal stability of the composites was investigated. It is observed that the LOI of the EP composite with 20 wt% MPhP (EP/MPhP20) is 26.5%, and the composite EP/MPhP20 reaches a UL 94 V-0 rating. Cone calorimeter test results show that the peak heat release rate, total heat release and total smoke release of EP/MPhP20 decrease by 51%, 34%, and 24%, respectively compared with those of pure EP. The flame retardancy of the EP/MPhP composites after the water treatment at 80 °C for 72 h is basically maintained, indicating that the composites have good water resistance. The mechanical strengths of the EP/MPhP composites decrease gradually with an increase in the MPhP content. Moreover, the thermal stability of the EP/MPhP composites was studied.
通过苯基磷酸（PPA）与三聚氰胺（MEL）反应简便地合成了一种阻燃剂三聚氰胺苯基磷酸盐（MPhP），并通过傅里叶变换红外光谱（FTIR）和核磁共振（NMR）对其进行了表征。制备了含有MPhP的环氧树脂（EP）复合材料，并研究了MPhP含量对复合材料的阻燃性、抑烟性、力学性能和热稳定性的影响。观察到含20 wt% MPhP的EP复合材料（EP/MPhP20）的极限氧指数（LOI）为26.5%，且复合材料EP/MPhP20达到了UL 94 V-0等级。锥形量热仪测试结果表明，与纯EP相比，EP/MPhP20的热释放速率峰值、总热释放量和总烟释放量分别降低了51%、34%和24%。EP/MPhP复合材料在80℃下进行72 h水处理后的阻燃性能基本保持不变，表明该复合材料具有良好的耐水性。EP/MPhP复合材料的力学强度随着MPhP含量的增加而逐渐降低。此外，还研究了EP/MPhP复合材料的热稳定性。
