Comparison of Flame-retardancy Property and Mechanism between a Phosphate Ester and a Phosphoramine Flame-retardants  

作　　者：QIN Shiqian YANG Zhiyi ZHANG Shuai ZHANG Zhiye WANG Xinlong YANG Xiushan LUO Tao YANG Lin 秦仕千;YANG Zhiyi;ZHANG Shuai;ZHANG Zhiye;WANG Xinlong;YANG Xiushan;LUO Tao;杨林(School of Chemical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]School of Chemical Engineering,Sichuan University,Chengdu 610065,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2021年第1期148-156,共9页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Key Research and Development Program of China(No.2016YFD0200404);the Sichuan Science and Technology Program(No.2018RZ0145);the National“Double First-Rate”Strategic Plan of Sichuan University,China(No.2030704401004)。

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 (^(1)H-NMR and^(31)P-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).

关 键 词：FLAME-RETARDANT phosphoramine thermogravimetric analysis POLYCARBONATES TG-IR 

分 类 号：TQ314.248[化学工程—高聚物工业]