Experimental study on the fire characteristics of typical nitrocellulose mixtures using a cone calorimeter

Wei, Ruichao; Huang, Shenshi; Huang, Que; Ouyang, Dongxu; Chen, Qinpei; Yuen, Richard K.K.; Wang, Jian

doi:10.1007/s10973-018-7410-9

Cited by 18 publications

(4 citation statements)

References 32 publications

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“…As can be seen, NC-DEGDN composite showed two weight-loss events appearing at DTG peak temperatures of 161.5 • C and 204.6 • C with a weight loss of 34% and 56%, respectively. The first mass loss was mainly induced by the volatilization and decomposition of DEGDN [28,32], whereas the second stage of decomposition was attributed to the well-known thermolysis process of nitrocellulose [33]. After the addition of AN, it was evident, as seen in Figure 3b, that the obtained AN/NC-DEGDN composite exhibited three decomposition stages.…”

Section: Tga Characterizationmentioning

confidence: 95%

Towards Investigating the Effect of Ammonium Nitrate on the Characteristics and Thermal Decomposition Behavior of Energetic Double Base NC/DEGDN Composite

et al. 2022

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This research work aimed to elaborate on a new modified double-base propellant containing nitrocellulose (NC), ammonium nitrate (AN), and diethylene glycol dinitrate (DEGDN). The developed AN/NC-DEGDN formulation was successfully obtained through a casting process and fully characterized in terms of its chemical structure, morphological features, and thermal behavior. Beforehand, theoretical calculation by the CEA-NASA program was applied to select the optimal composition of the formulation. Experimental findings demonstrated the homogenous dispersion of AN oxidizer in the NC-DEGDN matrix without alteration of their molecular structures. The catalytic influence of AN on the thermal decomposition behavior of NC-DEGDN film was also elucidated by thermal analyses. When AN was incorporated into the formulation, the decomposition peak temperatures for the different decomposition processes were shifted toward lower temperatures, while the total enthalpy of decomposition increased by around 1272.24 J/g. In addition, the kinetics of the thermal decomposition of the developed modified double base propellant were investigated using DSC results coupled with model kinetic approaches. It was found that the addition of AN decreases the activation energy of nitrate esters from 134.5 kJ/mol to 118.84 kJ/mol, providing evidence for its excellent catalytic effect. Overall, this investigation could serve as a reference for developing future generation of modified double-base propellants.

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Section: Tga Characterizationmentioning

confidence: 95%

Towards Investigating the Effect of Ammonium Nitrate on the Characteristics and Thermal Decomposition Behavior of Energetic Double Base NC/DEGDN Composite

et al. 2022

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“…They put forward that the kinetic activation energy E and pre-exponential factor A of these two propellants keep decreasing with the increasing water content. Besides, previous work [5][6][7] showed that NC with different alcohol humectants differs in combustion characteristics. By the same token, it can be hypothesized that the thermal behavior of NC with different humectants will be different.…”

Section: Introductionmentioning

confidence: 95%

“…Previous researches on the thermal parameters of NC mainly focused on heat release rate [2,[5][6][7], heat of combustion [8], heat of decomposition [9][10][11][12], critical explosion temperature [13][14][15][16][17], and pyrolysis temperature [18][19][20]. Although there have been numerous investigations on thermal behaviors of NC, relatively little work has been conducted to estimate the safe storage temperatures of NC with different humectants, which includes the critical temperature of time to maximum rate (TMR) and the critical temperature of time to conversion limit (TCL).…”

Section: Introductionmentioning

confidence: 99%

Estimation on the Safe Storage Temperature of Nitrocellulose with Different Humectants

Wei

Huang

Wang

et al. 2018

Propellants Explo Pyrotec

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In order to estimate the safe storage temperatures of nitrocellulose (NC) with different humectants (water, ethanol, and isopropanol), non-isothermal experiments were performed by a differential scanning calorimeter (DSC). Thermodynamic parameters were simulated by thermal safety software (TSS). Comparison of autocatalytic simulation and nth order simulation was conducted. Also, Kissiger-Akahira-Sunose (KAS) and Ozawa-Flynn-Wall (OFW) methods were employed to validate the simulated activation energy E, whose results indicated that the average E calculated by KAS and OFW methods is lower than that simulated by autocatalytic simulation. Finally, the critical temperatures of time to maximum rate (TMR) and time to conversion limit (TCL) were estimated. The results show that the critical temperature of pure NC is higher than that of NC with humectants, which indicates that NC with humectants possess a higher thermal instability at an identical temperature. In addition, to ensure the effectiveness of NC products, storage temperatures of pure NC and NC-humectants were also simulated. Figure 1. The scenes of Tianjin Port (a) before and (b) after the explosion caused by NC. (Source: Baidu). 2 3 4 5 6 7 8

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“…The combustion and explosion behaviors of NC were also in focus 13 , 17 . In addition, a large number of experiments attached great importance to the influence of various catalysts 18 , 19 , stabilizers 20 – 24 , plasticizers 25 , 26 , wetting agents 2 , 25 , 27 – 30 , and inorganic salts 31 , 32 on the thermal behaviors of NC.…”

Section: Introductionmentioning

confidence: 99%

Thermal hazard evaluation on spontaneous combustion characteristics of nitrocellulose solution under different atmospheric conditions

Zhi-ping

Jiang

Huang

et al. 2021

Sci Rep

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Nitrocellulose (NC) is widely used in both military and civilian fields. Because of its high chemical sensitivity and low decomposition temperature, NC is prone to spontaneous combustion. Due to the dangerous properties of NC, it is often dissolved in other organic solvents, then stored and transported in the form of a solution. Therefore, this paper took NC solutions (NC-S) with different concentrations as research objects. Under different atmospheric conditions, a series of thermal analysis experiments and different reaction kinetic methods investigated the influence of solution concentration and oxygen concentration on NC-S’s thermal stability. The variation rules of NC-S’s thermodynamic parameters with solution and oxygen concentrations were explored. On this basis, the spontaneous combustion characteristics of NC-S under actual industrial conditions were summarized to put forward the theoretical guidance for the spontaneous combustion treatment together with the safety in production, transportation, and storage.

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Experimental study on the fire characteristics of typical nitrocellulose mixtures using a cone calorimeter

Cited by 18 publications

References 32 publications

Towards Investigating the Effect of Ammonium Nitrate on the Characteristics and Thermal Decomposition Behavior of Energetic Double Base NC/DEGDN Composite

Towards Investigating the Effect of Ammonium Nitrate on the Characteristics and Thermal Decomposition Behavior of Energetic Double Base NC/DEGDN Composite

Estimation on the Safe Storage Temperature of Nitrocellulose with Different Humectants

Thermal hazard evaluation on spontaneous combustion characteristics of nitrocellulose solution under different atmospheric conditions

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