A review on the suppression mechanism of typical flame retardants on the explosion of mine dust

Wang, Silong; Ding, Hongyuan; Xie, Jianhua; Chen, Yanjun; Wang, Chao; Liu, Changcheng; Huang, Que

doi:10.1016/j.powtec.2023.118762

Cited by 7 publications

(1 citation statement)

References 163 publications

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“…Additionally, the decomposition behavior of polymer materials depends largely on the environment in which they begin to decompose [10], particularly the external heat flux [11]. To date, more than 37 methods are employed to characterize the combustion characteristics, including the limiting oxygen index (LOI) method [12], horizontal and vertical combustion method, smokebox method put forward by the National Bureau of Standards (NBS) to measure smoke density, and tunnel method to measure flame propagation velocity. To evaluate the combustion characteristics of polymer materials more comprehensively, a cone calorimeter was invented in 1982 to study the heat release of materials under certain heat flux [13].…”

Section: Introductionmentioning

confidence: 99%

Research on the Fire Behaviors of Polymeric Separator Materials PI, PPESK, and PVDF

Huang,

Li,

Han

et al. 2023

Fire

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Certain polymers, such as polyvinylidene fluoride (PVDF), polyimide (PI), and poly (phthalazinone ether sulfone ketone) (PPESK), are commonly used separator materials in batteries. However, during the thermal runaway (TR) processing of batteries, significant heat is released by the combustion of the polymer separator. Therefore, analysis of the fire behaviors of polymer separator materials will facilitate a more comprehensive quantitative evaluation of battery thermal risk. This paper investigated the combustion properties of three types of polymers, namely, PVDF, PI, and PPESK, as potential separator materials by cone calorimetry and thermogravimetry (TG). A series of characteristic parameters, including ignition time (TTI), heat release rate (HRR), smoke production rate (SPR), and total heat release (THR), were evaluated for three polymers and blends (PI/PVDF, PPESK/PVDF) under an external heat flux of 45 or 60 kW/m2, respectively. The combustion characteristics and fire hazards of the three polymers and corresponding mixtures were analyzed through the comparative analysis of experimental data and phenomena. Under 60 kW/m2, the HRR curves of all polymers presented two peaks, while PI/PVDF and PPESK/PVDF mixtures exhibited one obvious peak. Moreover, the peak HRR (pHRR) for the mixed polymers was higher, indicating a relatively higher fire risk. However, in the application scenario, the mixed state represents the main polymer form as the active separator materials in batteries. The results showed that the specific coupling behaviors were related primarily to the component type. This work will help evaluate the fire risk of polymeric separator materials based on the combustion characteristics to predict the safety of mixtures in batteries and develop new methods for fire suppression.

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Section: Introductionmentioning

confidence: 99%