Effects of flame retardants containing P-O-C and P-C structures on the flame retardant properties of epoxy resin

被引:9
|
作者
Wang, Xiaoyang [1 ]
Wang, Jingming [1 ]
Zhao, Wei [1 ]
Liu, Jia [1 ]
Long, Shijie [1 ]
Wang, Dun [1 ,2 ,3 ]
机构
[1] Hainan Univ, Hainan Prov Fine Chem Engn Res Ctr, Haikou, Hainan, Peoples R China
[2] Hainan Univ, Sch Chem Engn & Technol, Haikou, Hainan, Peoples R China
[3] Hainan Univ, Sch Chem Engn & Technol, Haikou 570228, Hainan, Peoples R China
关键词
epoxy; flame retardant; flame retardant mechanism; pyrolysis behavior; thermal stability; THERMAL-DEGRADATION; LOW-FLAMMABILITY; CURING AGENT; PHOSPHORUS; BEHAVIOR; STABILITY;
D O I
10.1002/pat.5951
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
So far, discussions on the effects of elements on flame retardant properties have been widespread in flame retardant-related fields, but reports on the effects of specific structures on flame retardant properties are rare. In this work, two novel phosphorus-nitrogen flame retardants were synthesized from diphenylphosphinyl chloride and diphenyl chlorophosphite. It was proved that the P-O-C structure of the DOAT flame retardant is beneficial to form a more stable carbon layer with high phosphorus content and reduce the total amount of smoke, while the P-C structure of DPAT flame retardant is conducive to produce a large amount of phosphorus-containing substances in the gas phase, while the phosphorus content in the residual carbon is very low. Therefore, the DOAT flame retardant mainly plays a flame retardant role in the condensed phase. The DPAT flame retardant mainly plays a flame retardant role in the gas phase. The flame retardant action mechanism of the combustion process was also investigated by using scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and Thermogravimetric analysis/infrared spectrometry (TG-IR).
引用
收藏
页码:1046 / 1058
页数:13
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