Investigation of different thermal analysis techniques to determine the decomposition kinetics of ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane with reduced sensitivity and its cured PBX

Abd‐Elghany, Mohamed; Klapötke, Thomas M.; Elbeih, Ahmed; Zeman, Svatopluk

doi:10.1016/j.jaap.2017.05.020

Cited by 37 publications

(15 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The structure of MNDIA and DINA werec haracterizedb yN MR (500 m)a nd elementarya nalysis. As ar esult of the fact that the skeleton structures of the MNDIA and DINA are similar, their 1 HNMR, 13 The studies of thermals tabilities of the O-nitrationl iquid, the N-nitration liquid, MNDIA and DINA were all carried out through DSC measurements and the experimental resultsw ere showedi nF igure 3. According to Figure 3, the exothermic peak of MNDIAo ccurred at 143.00 8Ca th eating rates of 10 8Cmin À1 ,which is extremely close to the first and larger exothermicpeak of the N-nitration liquid.…”

Section: Thermal Behavior Of the N-nitration Liquid And Dinamentioning

confidence: 99%

“…The reaction progress versus temperature under different heating rates were obtained and are shown in Figure 6. For the first decomposition peak, aF lynn- Wall-Ozawa model 12,13] was employed to calculate the apparent activation energy (E)o ft he N-nitration liquid under different a values and the results were showed in Figure 7. Ta king a value of 0.6 as the boundary, E could be allotted into different two stages, indicating that the decomposition process of this N-nitration liquid proceeds in two stages.…”

Section: Thermal Decomposition Kinetics Of the N-nitration Liquidmentioning

confidence: 99%

See 1 more Smart Citation

Transformation and Stability of N‐Nitrodiethanolamine Dinitrate Nitration Liquid System under Thermal and Mechanical Stimulation

et al. 2018

View full text Add to dashboard Cite

To obtain a deeper understanding of the process involved in the synthesis of N‐nitrodiethanolamine dinitrate (DINA), in this work we carried out systematic studies on the transformation and stability of the N‐nitration liquid and DINA. The thermal decomposition processes and dynamic characteristics for both the N‐nitration liquid and DINA were carried out by thermal analysis methods and the mechanism for the decrease of stability of the N‐nitration liquid was proposed according to experimental results. Mechanical stimulation of the N‐nitration liquid and DINA were also studied by friction and impact sensitivity testing. The experimental results showed that the N‐nitration liquid is highly sensitive to temperature and can decompose easily when the reaction temperature increases. However, mechanical sensitivity of the N‐nitration was demonstrated to be much lower than that of DINA. Therefore, precise thermal control is the key factor to ensure safety during the preparation of DINA.

show abstract

Section: Thermal Behavior Of the N-nitration Liquid And Dinamentioning

confidence: 99%

Section: Thermal Decomposition Kinetics Of the N-nitration Liquidmentioning

confidence: 99%

Transformation and Stability of N‐Nitrodiethanolamine Dinitrate Nitration Liquid System under Thermal and Mechanical Stimulation

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Glycidyl azide polymer (GAP) is a high energy polymer which has different applications, especially in composite solid rocket propellants (CSRP). 30 It can be used as a binder or plasticizer for different types of rocket propellant and PBXs. [31][32][33] The synthesis, structure and thermal behavior of the GAP binder system have been discussed in several publications.…”

Section: Introductionmentioning

confidence: 99%

The effect of glycidyl azide polymer on the stability and explosive properties of different interesting nitramines

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Usually, thermal analysis is considered the best process of studying the thermal decomposition of energetic materials. The most common thermal analysis techniques such as thermogravimetric analysis (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) have been used isothermally and non-isothermally in the study of the decomposition kinetics [13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Thermal Behavior and Decomposition Kinetics of Bis(2,2,2‐trinitroethyl)‐oxalate as a High Energy Dense Oxidizer and its Mixture with Nitrocellulose

Abd‐Elghany

Klapötke

Elbeih

2017

Propellants Explo Pyrotec

Self Cite

View full text Add to dashboard Cite

A new propellant formulation (NC‐BTNEOx) based on bis(2,2,2‐trinitroethyl)oxalate (BTNEOx) as a high energy dense oxidizer (HEDO) mixed with nitrocellulose (NC) matrix was prepared and studied. BTNEOx was prepared and characterized by nuclear magnetic resonance (NMR) and X‐ray diffraction (XRD). Photos of the prepared formulation obtained by scanning electron microscope (SEM) clarified a good mixing of the nitrocellulose (NC) matrix with BTNEOx. A smokeless burning was observed and recorded for the prepared NC‐BTNEOx by a high speed camera. The thermal behavior and decomposition kinetics of the NC matrix, BTNEOx and their mixture have been investigated nonisothermally by using thermogravimetric analysis (TGA) and Differential scanning calorimetry (DSC). Isoconversional (model‐free) methods; Kissinger, Ozawa and Flynn−Wall (OFW) and Kissinger−Akahira−Sunose (KAS), were used to determine the kinetic parameters of the studied samples. The results proved that BTNEOx has melting temperature at 104.1 °C and maximum peak temperature at 200.6 °C, also it has effective activation energy in the range of 107–110 kJ/mol. The prepared NC‐BTNEOx has no endothermic peak and has exothermic peak at 201.7 °C which means that a composite might be formed due to the mixing of BTNEOx with NC. The prepared NC‐BTNEOx has effective activation energy in the range of 172–180 kJ/mol. BTNEOx required more study to proof the possibility of replacing the nitroglycerine in a smokeless double base propellant.

show abstract

Investigation of different thermal analysis techniques to determine the decomposition kinetics of ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane with reduced sensitivity and its cured PBX

Cited by 37 publications

References 34 publications

Transformation and Stability of N‐Nitrodiethanolamine Dinitrate Nitration Liquid System under Thermal and Mechanical Stimulation

Transformation and Stability of N‐Nitrodiethanolamine Dinitrate Nitration Liquid System under Thermal and Mechanical Stimulation

The effect of glycidyl azide polymer on the stability and explosive properties of different interesting nitramines

Thermal Behavior and Decomposition Kinetics of Bis(2,2,2‐trinitroethyl)‐oxalate as a High Energy Dense Oxidizer and its Mixture with Nitrocellulose

Contact Info

Product

Resources

About