Synthesis of Melamine Phenylphosphate and Its Application in Rigid Polyurethane Foams
WANG Zhengzhou1,2, SUN Haoyu1, XU Xiaoyan1
1 School of Materials Science and Engineering, Tongji University, Shanghai 201804; 2 Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804;
Abstract: Melamine (MEL) and phenylphosphonic acid (PPA) were used to synthesize a kind of nitrogen-phosphorus flame retardant, i.e. melamine phenylphosphate (MPP), and its chemical structure have been characterized by 31P nuclear magnetic resonance (31P NMR) spectrum and infrared spectrum. The flame retardant properties of the flame retarded rigid polyurethane foams (RPUF) were investigated by limiting oxygen index (LOI), UL 94 and cone calorimetry. Results showed that when the MPP loading was 15wt%, the LOI of the flame retarded RPUF was 27% and its UL 94 rating was V-0. The peak heat release rate (PHRR) of flame retarded RPUF at the MPP loading of 15% was reduced by 44% compared with that of the pure RPUF. The presence of 15% MPP in RPUF led to a 50% increase in compressive strength and a 27% increase in flexural strength, respectively, compared with pure RPUF. The thermal conductivity of the RPUF flame retarded by 15% MPP was 0.025 9 W/(m·K) which increased a little compared with the pure RPUF. Moreover, the thermal decomposition of flame retarded RPUF was studied by thermogravimetric analysis.
王正洲, 孙皓宇, 徐小燕. 三聚氰胺苯基磷酸盐的合成及在硬质聚氨酯泡沫中的应用[J]. 《材料导报》期刊社, 2017, 31(14): 4-10.
WANG Zhengzhou, SUN Haoyu, XU Xiaoyan. Synthesis of Melamine Phenylphosphate and Its Application in Rigid Polyurethane Foams. Materials Reports, 2017, 31(14): 4-10.
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2017, Vol. 31 
