Electrostatic spraying synthesis of energetic RDX@NGEC nanocomposites

Chen, Ling; Li, Qiang; Wang, Xijin; Zhang, Jianwei; Xu, Guozhen; Cao, Xiang; Liu, Jie; Nan, Fengqiang; He, Weidong

doi:10.1016/j.cej.2021.133718

Cited by 34 publications

(9 citation statements)

References 32 publications

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“…It can be seen that the impact sensitivity and friction sensitivity for samples 1 and 2 were much reduced compared to those of pure RDX and CL-20, which may be due to the synergistic effects of the decreasing particle size from micrometer to nanometer [ 43 ] and the NC coating over the sensitive particle [ 11 , 44 ]. Compared to samples 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 the melting process under impact or friction.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Electrospinning Prepared Nitrocellulose (NC)-Ammonium Dinitramide (ADN)-Based Composite Fibers

Wang¹,

Xu²,

Deng³

et al. 2023

Nanomaterials

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Nanoscale composite energetic materials (CEMs) based on oxidizer and fuel have potential advantages in energy adjustment and regulation through oxygen balance (OB) change. The micro- and nanosized fibers based on nano nitrocellulose (NC)-ammonium dinitramide (ADN) were prepared by the electrospinning technique, and the morphology, thermal stability, combustion behaviors, and mechanical sensitivity of the fibers were characterized by means of scanning electron microscope (SEM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), gas pressure measurement of thermostatic decomposition, laser ignition, and sensitivity tests. The results showed that the prepared fibers with fluffy 3D macrostructure were constructed by the overlap of micro/nanofibers with the energetic particles embedded in the NC matrix. The first exothermic peak temperature (Tp) of the samples containing ADN decreased by 10.1 °C at most compared to that of ADN, and the pressure rise time of all the samples containing ADN moved forward compared to that of the sample containing NC only. Furthermore, ADN can decrease the ignition delay time of NC-based fibers under atmosphere at room temperature from 33 ms to 9 ms and can enhance the burning intensity of NC-based fibers under normal pressure. In addition, compared to the single high explosive CL-20 or RDX, the mechanical sensitivities of the composite materials containing high explosive CL-20 or RDX were much decreased. The positive oxygen balance of ADN and the intensive interactions between ADN and NC can reduce the ignition delay time and promote the burning reaction intensity of NC-based composite fibers, while the mechanical sensitivities of composite fibers could be improved.

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Section: Resultsmentioning

confidence: 99%

Characterization of Electrospinning Prepared Nitrocellulose (NC)-Ammonium Dinitramide (ADN)-Based Composite Fibers

Wang¹,

Xu²,

Deng³

et al. 2023

Nanomaterials

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“…The high-resolution C-1s spectrum in Fig. 5a can be deconstructed into five characteristic peaks, corresponding to C–H (284.8 eV) and N–C–N (287.9 eV) for RDX 43 as well as C–C (284.8 eV), C–NH 2 (285.8 eV), and C–NO 2 (287.1 eV) for TATB. 34 The N-1s spectra (Fig.…”

Section: Resultsmentioning

confidence: 99%

Interfacial engineered RDX/TATB energetic co-particles for enhanced safety performance and thermal stability

Qian

Jian-hu

et al. 2022

Dalton Trans.

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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: 94%

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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Electrostatic spraying synthesis of energetic RDX@NGEC nanocomposites

Cited by 34 publications

References 32 publications

Characterization of Electrospinning Prepared Nitrocellulose (NC)-Ammonium Dinitramide (ADN)-Based Composite Fibers

Characterization of Electrospinning Prepared Nitrocellulose (NC)-Ammonium Dinitramide (ADN)-Based Composite Fibers

Interfacial engineered RDX/TATB energetic co-particles for enhanced safety performance and thermal stability

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

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