Thermo-kinetic studies of NaN3/KNO3 air bag gas generant mixture

Aravind, S. L.; Paramashivan, Sivapirakasam Suthangathan; Surianarayanan, M.

doi:10.1007/s10973-018-7838-y

Cited by 13 publications

(5 citation statements)

References 15 publications

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“…Figure 6 presents the DSC curves obtained at a heating rate of 10 °C/min for the pure NaN 3 , NaN 3 /CNT and cg-N/CNT samples. The decomposition peak of pure sodium azide occurs at 412 °C, which is in reasonable agreement with that reported in the literature [ 43 , 44 ]. A broad exothermic peak between 275 °C and 350 °C appears for the NaN 3 /CNT sample obtained by compounding sodium azide with carbon nanotubes.…”

Section: Resultssupporting

confidence: 91%

“…les 2024, 29, x FOR PEER REVIEW of 10 °C/min for the pure NaN3, NaN3/CNT and cg-N/CNT samples. Th peak of pure sodium azide occurs at 412 °C, which is in reasonable agr reported in the literature [43,44]. A broad exothermic peak between 2 appears for the NaN3/CNT sample obtained by compounding sodium a nanotubes.…”

Section: Thermal Decomposition Performance Of Cg-n/cntsupporting

confidence: 87%

See 1 more Smart Citation

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance

Qu,

Li,

Ding

et al. 2024

Molecules

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Numerous theoretical calculations have demonstrated that polynitrogen with an extending polymeric network is an ultrahigh-energy all-nitrogen material. Typical samples, such as cubic gauche polynitrogen (cg-N), have been synthesized, but the thermal performance of polynitrogen has not been unambiguously determined. Herein, macroscopic samples of polynitrogen were synthesized utilizing a coated substrate, and their thermal decomposition behavior was investigated. Polynitrogen with carbon nanotubes was produced using a plasma-enhanced chemical vapor deposition method and characterized using infrared, Raman, X-ray diffraction X-ray photoelectron spectroscopy and transmission electron microscope. The results showed that the structure of the deposited polynitrogen was consistent with that of cg-N and the amount of deposition product obtained with coated substrates increased significantly. Differential scanning calorimetry (DSC) at various heating rates and TG-DSC-FTIR-MS analyses were performed. The thermal decomposition temperature of cg-N was determined to be 429 °C. The apparent activation energy (Ea) of cg-N calculated by the Kissinger and Ozawa equations was 84.7 kJ/mol and 91.9 kJ/mol, respectively, with a pre-exponential constant (lnAk) of 12.8 min−1. In this study, cg-N was demonstrated to be an all-nitrogen material with good thermal stability and application potential to high-energy-density materials.

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Section: Resultssupporting

confidence: 91%

Section: Thermal Decomposition Performance Of Cg-n/cntsupporting

confidence: 87%

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance

Qu,

Li,

Ding

et al. 2024

Molecules

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show abstract

“…On KNO 3 alone, the TG profile gave a weight loss of 61% at 570–800 °C, probably corresponding to the decomposition of KNO 3 to K 2 O 67,68 and evaporation of K 2 O. 69 This is in accordance with reported results of TGA 70 and thermal decomposition of KNO 3 in O 2 . 67 On the three KNO 3 /silica samples with a low KNO 3 loading ( ca.…”

Section: Resultssupporting

confidence: 91%

“…On KNO 3 /S15, the AI depleted by 71% after the calcination. The spectrum after the calcination showed no stretching vibration band of NO 2 − around 1250 cm −1 , 70 implying no formation of KNO 2 from the acidic KNO 3 /S15 during the calcination process. The EA indicated that K remains well without loss while N loses its content by 70% on KNO 3 /S15 after the calcination.…”

Section: Resultsmentioning

confidence: 93%

Stable catalysis of neutral silica-supported potassium lactate for vapour-phase dehydration of lactic acid to acrylic acid – critical role of the support

et al. 2022

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“…On comparing the activation energies of this work with that of the reported values, it was found that the activation energy values obtained for the ternary mixture of NaN 3 /Sr(NO 3 ) 2 /KNO 3 were higher. [22,23] The results of the present study showed higher activation energy values of the order of 249 kJ mol À1 compared to 58.1 kJ mol À1 for the conventional mixture of NaN 3 /KNO 3 and 193 kJ mol À1 for nonazide mixture of C 2 H 4 O 2 N 4 /KIO 4 as reported from previous studies. This was because of the addition of Sr(NO 3 ) 2 to the mixture.…”

Section: Thermal Degradation Kineticssupporting

confidence: 83%

Thermokinetic and Ballistic Property Studies of Azide‐Based Airbag Gas Generants with Dual Oxidizers (Sr(NO₃)₂ and KNO₃)

L¹,

Sivapirakasam

Mohan

et al. 2023

Energy Tech

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Thermokinetic degradation studies of an airbag gas generant ternary mixture comprising NaN3, KNO3, and SrNO3 are carried out for the first time using simultaneous differential scanning calorimetry–thermogravimetric analysis. The results point toward the fact that the use of dual oxidizers has improved the reactivity of the azide‐based airbag gas generant mixture and reduced the amount of residual masses remaining after degradation to a minimal value of 2%. The activation energy of the mixture is also found to be increased to a maximum value of 249 kJ mol−1 which is better than the conventional airbag mixtures. The ballistic property studies done on the ternary mixture show that it can activate the airbag within 43.3 ms of crash which is very much an improved timeframe compared to the existing airbag mixtures. The study indicates that stoichiometric mixture containing NaN3/Sr(NO3)2/KNO3:75/12/13 by weight can be used as a potential airbag gas generant for automotive airbags. The blended mode methodology used in this research work combining the thermokinetic and ballistic property measurement can be effectively used to evaluate the performance parameters of airbag gas generants.

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Thermo-kinetic studies of NaN3/KNO3 air bag gas generant mixture

Cited by 13 publications

References 15 publications

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance

Stable catalysis of neutral silica-supported potassium lactate for vapour-phase dehydration of lactic acid to acrylic acid – critical role of the support

Thermokinetic and Ballistic Property Studies of Azide‐Based Airbag Gas Generants with Dual Oxidizers (Sr(NO₃)₂ and KNO₃)

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Thermo-kinetic studies of NaN3/KNO3 air bag gas generant mixture

Cited by 13 publications

References 15 publications

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance

All-Nitrogen Energetic Material Cubic Gauche Polynitrogen: Plasma Synthesis and Thermal Performance

Stable catalysis of neutral silica-supported potassium lactate for vapour-phase dehydration of lactic acid to acrylic acid – critical role of the support

Thermokinetic and Ballistic Property Studies of Azide‐Based Airbag Gas Generants with Dual Oxidizers (Sr(NO3)2 and KNO3)

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Thermokinetic and Ballistic Property Studies of Azide‐Based Airbag Gas Generants with Dual Oxidizers (Sr(NO₃)₂ and KNO₃)