Synthesis of a Novel Oligomeric Intumescent Flame Retardant and its Application in Polypropylene
Synthesis of a Novel Oligomeric Intumescent Flame Retardant and its Application in Polypropylene
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DOI：
10.1002/pen.21153
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发表时间：
2009-07-01
影响因子：
3.2
通讯作者：
Xu, Zhongbin
中科院分区：
文献类型：
--
作者：
Song, Pingan;Fang, Zhengping;Xu, Zhongbin
合成并表征了一种新型低聚磷氮膨胀阻燃剂聚(4,4-二氨基二苯基甲烷-O-双环季戊四醇磷酸酯-磷酸酯)(PDBPP)。分别通过热重分析（TGA）、有限氧指数（LOI）和锥形量热仪研究了不同PDBPP负载量的聚丙烯（PP）/PDBPP复合材料的热稳定性和燃烧性能。结果表明，PDBPP的掺入可以显着提高PP的热稳定性和阻燃性。 PP/30%PDBPP体系的LOI值为28，其峰值放热率相对于纯PP降低了60%。红外光谱和场发射扫描电子显微镜测量表明，当暴露在高温下时，PDBPP 和 PP/PDBPP 复合材料会形成含有磷酸的连续多细胞炭层。有人认为，正是炭层增强了热稳定性并改善了阻燃性。聚合物。 ENG。 SCI., 49:1326-1331, 2009。(C) 2009 年塑料工程师学会
A novel oligomeric phosphorous-nitrogen containing intumescent flame retardant, poly (4,4-diamino diphenyl methane-O-bicycli pentaerythritol phosphate-phosphate) (PDBPP), was synthesized and characterized. Thermal stability and flammability properties of polypropylene (PP)/PDBPP composites with various PDBPP loading were investigated by thermogravimetric analysis (TGA), limited oxygen index (LOI), and cone calorimeter, respectively. The results showed that the incorporation of PDBPP could improve both the thermal stability and flame retardancy of PP considerably. PP/30%PDBPP system had a LOI value of 28 and its peak heat release rate was reduced by 60% relative to pure PP. Infrared spectrum and field emission scanning electron microscope measurements revealed that PDBPP and PP/PDBPP composites would form a continuous multicellular char layer containing phosphoric acid when exposed to elevated temperature. It was suggested that the very char layer was responsible for the enhanced thermal stability and improved flame retardancy. POLYM. ENG. SCI., 49:1326-1331, 2009. (C) 2009 Society of Plastics Engineers