Energetic nitrocellulose coating: effective way to decrease sensitivity and modify surface property of HMX particles

Zhang, Yajun; Bai, Yang; Li, Ji-Zhen; Fu, Xiaolong; Yang, Yanjing; Tang, Qiufan

doi:10.1080/07370652.2019.1567624

Cited by 22 publications

(10 citation statements)

References 20 publications

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“…The presence of PETN in the new designed molecules increased the heat of detonation tremendously as seen from Table 3. Similar to the studies in the literature [30,[36][37][38], it is seen that the explosion heat values increase by changing the substitution groups of energetic materials or adding new groups. This means that the new energetic materials obtained will generate more heat compared to the original explosives.…”

Section: Heat Of Detonationsupporting

confidence: 81%

The Effects of BTTN, TMETN and DEGDN Molecules on the Explosion Properties of PETN Molecule

HİLAL>

Varis

Mert

et al. 2022

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Molecular modelling is an appreciated tool that brings valuable data on physical and chemical characteristics of materials that eliminates the necessity of conducting any experiment. This method allows to calculate the performance of energetic molecules to be synthesized. In the work, the detonation parameters of the energetic organic compounds Pentaerythritol tetranitrate(PETN), Butanetriol trinitrate (BTTN), Trimetylolethane trinitrate (TMETN) and Diethyleneglycol dinitrate (DEGDN) has theoretically been calculated and some values compared with the literature values. Moreover, three hypothetical molecules combining PETN with other explosive molecules have been designed. The detonation properties have been calculated using density functional theory (DFT) with B3LYP/6-31G (d,p) basis set. It has been concluded that all molecules have the effect of increasing the explosion parameters of PETN.

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Section: Heat Of Detonationsupporting

confidence: 81%

The Effects of BTTN, TMETN and DEGDN Molecules on the Explosion Properties of PETN Molecule

HİLAL>

Varis

Mert

et al. 2022

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…[26] prepared (glycidyl azide polymer) GAP/RDX nanocomposite energetic materials and improved the peak temperature and heat‐release; Zhang et al. [27] and Wang et al. [28] decreased the sensitivity of HMX/NC and improved the thermal decomposition performance; and GAP/HMX [29], NC/CL‐20 [30], CL‐20/BAMO‐THF (Bis‐azidomethyl oxetanetetrahydrofuran copolymer) [31], and NC/RDX [32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 3D Porous Network Nanostructure of Nitrated Bacterial Cellulose Gel with Eminent Heat‐Release, Thermal Decomposition Behaviour and Mechanism

Ling

Cao²,

Gao³

et al. 2021

Propellants Explo Pyrotec

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In this study, a novel three‐dimensional (3D) porous cross‐link network structure of nitrated bacterial cellulose (NBC) nano‐gel, as an energetic gel matrix for fabrication of nanocomposite energetic materials, (nEMs) was synthesized by sol‐gel synthetic and the freeze‐drying technology. The analysis results revealed that the unique network structure with abundant of nano‐porous, which made the thermal behaviour of the NBC gel different from that of raw NBC. The thermal decomposition kinetic and mechanism of the NBC gel indicated that the exothermic peak temperature of the gel matrix decreased at low concentration, and the activation energy (Ea) of the gel0.5 (150000 J ⋅ mol−1) was much lower than that of raw NBC (223510 J ⋅ mol−1). However, the decomposition kinetic parameters of this study were not enough to illustrate the thermal properties, and which needs more effort to study them and complete. Furthermore, the initial reaction of gel decomposition was the splitting of urethane bond, and then the scission of −O−NO2 bonds happened, and the macromolecular chains’ breakage site of gel first occurred at −C−O−C− in the ring. After then, the chains of NBC break at −C−O−C− between the rings; notably, the heat‐release of gel was several times than that of raw NBC, which was liberated during the process of thermal decomposition. This promising research may provide potential application in preparing binder‐based nEMs and the basic theory of thermo‐analysis used in propellants and explosives.

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“…The results were listed in Table 3. It can be seen that the impact sensitivity and friction sensitivity for sample 1 and 2 were reduced much compared to those of pure RDX and CL-20, which may be due to the synergistic effects of decreasing particle size from micrometer to nanometer ) and NC coating over the sensitive particle (Chen et al 2022;Zhang et al 2019). Compared to sample 3 and 4, the addition of ADN can reduce the mechanical sensitivity, apart from the reasons mentioned above, another probable reason is that ADN can lubricate the NC matrix and adsorb heat in melting process under impact or friction.…”

Section: Mechanical Sensitivitymentioning

confidence: 95%

Characterization of nitrocellulose (NC)-ammonium dinitramide (ADN) based composite fibers prepared by electrospinning

Wang

Chang

Deng

et al. 2022

Preprint

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The fluffy fibers based on nitrocellulose (NC)/ammonium dinitramide (ADN) with high explosives have been fabricated by electrospinning technique. The morphology, thermal stability, combustion behaviors and mechanical sensitivity of NC/ADN-based composite fibers were characterized by means of scanning electron microscope (SEM), transmission electron microscopy (TEM), differentialscanning calorimetry (DSC), gas pressure measurement of thermostatic decomposition, laser ignition and sensitivity test, respectively. The results showed that the prepared fibers with fluffy 3D macrostructure were constructed by the overlap of mirco/nanofibers with the energetic particles imbedded in NC matrix. The addition of ADN can accelerate the thermal decomposition with the peak temperature (Tp) decrease by 10.1 oC and the pressure rise time moving forward. Furthermore, ADN can decrease the ignition delay time of NC-based fibers under atmosphere at room temperature from 33 ms to 9 ms, and enhance the burning strength of NC-based fibers under normal pressure. In addition, the impact sensitivities were reduced from 100–56% for NC-based fibers containing CL-20 and from 88–56% for NC-based fibers containing RDX; the friction sensitivities were reduced from 100–64% for NC-based fibers containing CL-20 and from 84–60% for NC-based fibers containing RDX, respectively.

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Energetic nitrocellulose coating: effective way to decrease sensitivity and modify surface property of HMX particles

Cited by 22 publications

References 20 publications

The Effects of BTTN, TMETN and DEGDN Molecules on the Explosion Properties of PETN Molecule

The Effects of BTTN, TMETN and DEGDN Molecules on the Explosion Properties of PETN Molecule

Synthesis of 3D Porous Network Nanostructure of Nitrated Bacterial Cellulose Gel with Eminent Heat‐Release, Thermal Decomposition Behaviour and Mechanism

Characterization of nitrocellulose (NC)-ammonium dinitramide (ADN) based composite fibers prepared by electrospinning

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