Comparison of Flame-retardancy Property and Mechanism between a Phosphate Ester and a Phosphoramine Flame-retardants
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2021年第1期
论文作者：秦仕千 YANG Zhiyi ZHANG Shuai ZHANG Zhiye WANG Xinlong YANG Xiushan LUO Tao 杨林
文章页码：148 - 156
摘 要：A halogen-free flame-retardant （hydroquinone bis （N,N’-diarylphosphoramidate）,4N-HDP） containing phosphorus-nitrogen was synthesized.Its structure was characterized by infrared spectroscopy （IR）,nuclear magnetic resonance (1H-NMR and31P-NMR).Thermogravimetric analysis （TG）,limiting oxygen index （LOI）,UL-94 vertical burning test （UL-94）,thermogravimetric-infrared instrument （TG-IR） and scanning electron microscopy （SEM） were used to compare the flame-retarding performance and mechanism of hydroquinone bis （diphenyl phosphate） （HDP） and 4N-HDP.TG,IR and TG-IR were used for comparative analysis,indicating that both HDP and 4N-HDP are flame-retardants,and the gas phase and condensed phase act synergistically.In the pyrolysis process,it is divided into two steps:the first step is the breakage of large molecules to small molecules;the second step is the gasification and carbonization of small molecules,and eventually produces phosphate ester and non-flammable gases.Through the comparison of various results,it could be found that 4N-HDP has better flame-retarding performance compared to HDP in the composite with polycarbonate （PC）.
秦仕千，YANG Zhiyi，ZHANG Shuai，ZHANG Zhiye，WANG Xinlong，YANG Xiushan，LUO Tao，杨林
School of Chemical Engineering, Sichuan University
摘 要：A halogen-free flame-retardant （hydroquinone bis （N,N’-diarylphosphoramidate）,4N-HDP） containing phosphorus-nitrogen was synthesized.Its structure was characterized by infrared spectroscopy （IR）,nuclear magnetic resonance (1H-NMR and31P-NMR).Thermogravimetric analysis （TG）,limiting oxygen index （LOI）,UL-94 vertical burning test （UL-94）,thermogravimetric-infrared instrument （TG-IR） and scanning electron microscopy （SEM） were used to compare the flame-retarding performance and mechanism of hydroquinone bis （diphenyl phosphate） （HDP） and 4N-HDP.TG,IR and TG-IR were used for comparative analysis,indicating that both HDP and 4N-HDP are flame-retardants,and the gas phase and condensed phase act synergistically.In the pyrolysis process,it is divided into two steps:the first step is the breakage of large molecules to small molecules;the second step is the gasification and carbonization of small molecules,and eventually produces phosphate ester and non-flammable gases.Through the comparison of various results,it could be found that 4N-HDP has better flame-retarding performance compared to HDP in the composite with polycarbonate （PC）.
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