Sustainable and efficient flame retardant materials for achieving high fire safety for polystyrene composites

Author(s):  
Nour F. Attia
Keyword(s):  
2021 ◽  
Vol 29 (1) ◽  
Author(s):  
Tingxiang He ◽  
Junhong Guo ◽  
Chengxia Qi ◽  
Rui feng ◽  
Baoping Yang ◽  
...  

2021 ◽  
pp. 2101044
Author(s):  
Shibo Wang ◽  
Penghao Sun ◽  
Xu Xu ◽  
He Liu ◽  
Dan Wang ◽  
...  

2021 ◽  
Vol 405 ◽  
pp. 126620
Author(s):  
Zhi-Ran Yu ◽  
Min Mao ◽  
Shi-Neng Li ◽  
Qiao-Qi Xia ◽  
Cheng-Fei Cao ◽  
...  

2007 ◽  
Vol 25 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Shuqin He ◽  
Yuan Hu ◽  
Lei Song ◽  
Yong Tang

2020 ◽  
Vol 31 (11) ◽  
pp. 2884-2895
Author(s):  
Xilei Chen ◽  
Xinyuan Zhang ◽  
Shaoping Kuang ◽  
Chuanmei Jiao ◽  
Shaoxiang Li

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7589
Author(s):  
Fuqiang Dong ◽  
Zhonglin Luo ◽  
Biaobing Wang

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.


Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2662
Author(s):  
Sangram P. Bhoite ◽  
Jonghyuck Kim ◽  
Wan Jo ◽  
Pravin H. Bhoite ◽  
Sawanta S. Mali ◽  
...  

The compatibility and coating ratio between flame retardant materials and expanded polystyrene (EPS) foam is a major impediment to achieving satisfactory flame retardant performance. In this study, we prepared a water-based intumescent flame retardant system and methylene diphenyl diisocyanate (MDI)-coated expandable polystyrene microspheres by a simple coating approach. We investigated the compatibility, coating ratio, and fire performance of EPS- and MDI-coated EPS foam using a water-based intumescent flame retardant system. The microscopic study revealed that the water-based intumescent flame retardant materials were successfully incorporated with and without MDI-coated EPS microspheres. The cone calorimeter tests (CCTs) of the MDI-coated EPS containing water-based intumescent flame retardant materials exhibited better flame retardant performance with a lower total heat release (THR) 7.3 MJ/m2, peak heat release rate (PHRR) 57.6 kW/m2, fire growth rate (FIGRA) 2027.067 W/m2.s, and total smoke production (TSP) 0.133 m2. Our results demonstrated that the MDI-coated EPS containing water-based intumescent flame retardant materials achieved flame retarding properties as per fire safety standards.


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