Chemically inorganic modified ammonium polyphosphate as eco-friendly flame retardant and its high fire safety for epoxy resin

2021 ◽  
pp. 100959
Author(s):  
Zhu-Bao Shao ◽  
Jing Cui ◽  
Xiao-Lu Li ◽  
José Luis Díaz Palencia ◽  
De-Yi Wang
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Fire Safety ◽  
Ammonium Polyphosphate

scholarly journals Preparation of Mn2+ Doped Piperazine Phosphate as a Char-Forming Agent for Improving the Fire Safety of Polypropylene/Ammonium Polyphosphate Composites

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7589
Author(s):  
Fuqiang Dong ◽  
Zhonglin Luo ◽  
Biaobing Wang
Keyword(s):  
Heat Release ◽  
Flame Retardant ◽  
Fire Safety ◽  
Raw Materials ◽  
Carbon Layer ◽  
Ammonium Polyphosphate ◽  
Manganese Acetate ◽  
Limiting Oxygen Index ◽  
Peak Heat Release Rate ◽  
High Degree

A piperazine phosphate doped with Mn2+ (HP-Mn), as a new char-forming agent for intumescent flame retardant systems (IFR), was designed and synthesized using 1-hydroxy ethylidene-1,1-diphosphonic acid, piperazine, and manganese acetate tetrahydrate as raw materials. The effect of HP-Mn and ammonium polyphosphate (APP) on the fire safety and thermal stability of polypropylene (PP) was investigated. The results showed that the combined incorporation of 25 wt.% APP/HP-Mn at a ratio of 1:1 endowed the flame retardant PP (PP6) composite with the limiting oxygen index (LOI) of 30.7% and UL-94 V-0 rating. In comparison with the pure PP, the peak heat release rate (PHRR), the total heat release (THR), and the smoke production rate (PSPR) of the PP6 were reduced by 74%, 30%, and 70%, respectively. SEM and Raman analysis of the char residues demonstrated that the Mn2+ displayed a catalytic cross-linking charring ability to form a continuous and compact carbon layer with a high degree of graphitization, which can effectively improve the flame retardancy of PP/APP composites. A possible flame-retardant mechanism was proposed to reveal the synergistic effect between APP and HP-Mn.

Synergistic flame-retardant effects of ammonium polyphosphate and AC-Fe2O3 in epoxy resin

2019 ◽  
Vol 138 (2) ◽  
pp. 1259-1267
Author(s):  
Qingyi Song ◽  
Hongjuan Wu ◽  
Hao Liu ◽  
Xiaoxia Han ◽  
Hongqiang Qu ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Ammonium Polyphosphate ◽  
Synergistic Flame Retardant

scholarly journals Effect of polyphosphate flame retardant compounded montmorillonite and ammonium polyphosphate on flame retardancy of epoxy resin

2020 ◽  
Vol 50 (4) ◽  
pp. 489-497
Author(s):  
Juanjuan Fan ◽  
Daming Ban ◽  
Ji Yang ◽  
Yonghang Zhang ◽  
Yang Min
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Ammonium Polyphosphate
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