Combustion of boron particles coated with an energetic polymer material

Shin, Weon Gyu; Han, Doo-Hee; Park, Yohan; Hyun, Hyung Soo; Sung, Hong-Gye; Sohn, Youngku

doi:10.1007/s11814-016-0173-8

Cited by 36 publications

(17 citation statements)

References 31 publications

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“…Figure 8i shows the N1s spectrum of the MTNP/PETN eutectic mixture, which consists of 5 peaks: 400.53 eV, 401.78 eV, 402.33 eV, 406.52 eV and 407.74 eV. Among them, the peaks located at 400.53 eV, 401.78 eV, 402.33 eV and 406.52 eV were attributed to the C=N, N−N, C−N and C‐NO 2 bonds in MTNP, and the peak at 407.74 eV was attributed to the influence of O‐NO 2 in PETN [35]. Figure 8j shows that the peak at 532.78 eV in the O1s spectrum of MTNP was affected by NO 2 .…”

Section: Resultsmentioning

confidence: 98%

Characterization, Thermolysis, and Energetic Properties of an MTNP/PETN Eutectic Prepared via the Solvent/Anti‐Solvent Method

Kou

Song

Guo

et al. 2020

Propellants Explo Pyrotec

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In this article, a eutectic mixture was prepared by mixing 1‐methyl‐3,4,5‐trinitropyrazole (MTNP) and pentaerythritol tetranitrate (PETN) by a new method. The T−X phase diagram and H−X phase diagram were obtained by means of DSC analysis, and then the ratio of the eutectic was obtained. All systems displayed simple eutectic behavior. Energy‐dispersive X‐ray spectroscopy (EDS), X‐ray diffraction (XRD), Fourier transform infrared (IR) spectroscopy, and X‐ray photoelectron spectroscopy (XPS) were performed to characterize the structure of the eutectic. Thermodynamic analysis and TG‐MS tests were carried out to explore the thermal decomposition of the eutectic. Then, the mechanical sensitivity and thermal sensitivity of the raw materials and the eutectic were tested, and the detonation performance was also calculated. The results show that the compatibility of the components of the eutectic is not perfect because of the intermolecular forces between the raw materials. Thermal the decomposition products are mainly H2, H2O, N2, CO, NO, N2O and CO2 and a small amount of CH4. The eutectic has the characteristics of high energy and insensitivity and is expected to replace TNT‐based molten cast explosives.

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Section: Resultsmentioning

confidence: 98%

Characterization, Thermolysis, and Energetic Properties of an MTNP/PETN Eutectic Prepared via the Solvent/Anti‐Solvent Method

Kou

Song

Guo

et al. 2020

Propellants Explo Pyrotec

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“…The IR spectra of NC/GAP, NC/GAP/nano-LLM-105, and nano-LLM-105 are contrasted in Figure 5a. For NC/GAP/nano-LLM-105, the peaks at 3437, 3405, 3285 3233, and 1648 cm −1 respectively indicated symmetric, anti-symmetric stretching vibrations and deformation vibrations of –NH 2 in nano-LLM-105; two strong absorption peaks located at 1480 and 1448 cm −1 corresponded to the stretching vibrations of the C=C skeleton in the ring of nano-LLM-105; the peak at 1577 cm −1 indicated anti-symmetric stretching vibrations of –NO 2 in nano-LLM-105; the peaks at 1351 cm −1 and 1383 cm −1 corresponded to symmetric stretching vibrations of –NO 2 in nano-LLM-105 [27]; the peak at 2101 cm −1 was ascribed to the stretching vibrations of –N 3 from the GAP that was present [28]; the peaks at 1280 and 1648 cm −1 reflected the symmetric and anti-symmetric stretching vibrations of -ONO 2 in NC, respectively [29]; the peak at 1075 cm −1 corresponded to the out-of-plane bending vibrations of C–H. Hence, the functional groups for NC/GAP/nano-LLM-105 were in accord with nano-LLM-105 and NC/GAP, indicating that the LLM-105 nanoparticles were well-combined with NC/GAP.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 284.7 eV, 286.8 eV, and 287.6 eV corresponded to -C-C, -C-NH 2 , and -C-NO 2 in nano-LLM-105 [32]. The XPS spectrum of N1s consisted of seven peaks at 400.4 eV, 401.1 eV, 404.1 eV, 404.2 eV, 406.9 eV, 407.7 eV, and 408.2 eV, which corresponded respectively to – N =N=N, –NH 2 , –N= N=N , C-N in ring, -NO 2 , –ONO 2 , and N-O in the ring [28]. The -N 3 and –ONO 2 groups were ascribed to NC and GAP, respectively.…”

Section: Resultsmentioning

confidence: 99%

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An Electrospun Preparation of the NC/GAP/Nano-LLM-105 Nanofiber and Its Properties

et al. 2019

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In this work, an energetic composite fiber, in which 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105) nanoparticles intimately incorporated with a nitrocellulose/glycidyl azide polymer (NC/GAP) fiber, was prepared by the electrospinning method. The morphology and structure of the nanofiber was characterized by scanning electron microscopy (SEM), energy dispersive X-Ray (EDX), fourier transform infrared spectroscopy (IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET). The nanofibers possessed a three-dimensional (3D) net structure and a large specific surface area. Thermal analysis, energetic performance, and sensitivities were investigated, and they were compared with NC/GAP and LLM-105 nanoparticles. The NC/GAP/nano-LLM-105 nanofibers show higher decomposition rates and lower decomposition temperatures. The NC/GAP/nano-LLM-105 decomposed to CO2, CO, H2O, N2O, and a few NO, -CH2O-, and -CH- fragments, in the thermal-infrared spectrometry online (TG-IR) measurement. The NC/GAP/nano-LLM-105 nanofibers demonstrated a higher standard specific impulse (Isp), a higher combustion chamber temperature (Tc), and a higher specialty height (H50). The introduction of nano-LLM-105 in the NC/GAP matrix results in an improvement in energetic performance and safety.

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“…However, most petroleum-based polymeric materials, which are widely used for their advantages of stability and microbial resistance, are actually inhibiting natural waste decomposition processes in landfills and hindering the circulation process of polymeric materials. 1 Therefore, there is a growing interest in naturally renewable and biodegradable resources. 2,3 Much attention is paid to poly(lactic acid) (PLA) that can be synthesized from plants like corn.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of highly flexible poly(lactic acid) film using alternate multilayers of poly[(butylene adipate)‐co‐terephthalate]

Lee

Cho

et al. 2014

Polymer International

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Poly(lactic acid) (PLA) and poly[(butylene adipate)-co-terephthalate] (PBAT) are both commonly used biodegradable polymers. In this study, co-extrusion of PLA and PBAT was used to create alternately multilayered films in order to obtain high-flexibility PLA film. The incorporation of PBAT provides enhanced flexibility to PLA and the effect is more distinct in the PLA/PBAT multilayer film as the number of layers increases. Through differential scanning calorimetric and wide-angle X-ray scattering analyses, the crystallinity of PLA is shown to decrease more in the multilayer film than in the blended film. Transparency is also enhanced in the multilayer film. The fabrication of alternate multilayered film by co-extrusion of PLA and PBAT shows a new method of preparing a flexible, transparent and fully biodegradable film, which is impossible through a blending process.

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Combustion of boron particles coated with an energetic polymer material

Cited by 36 publications

References 31 publications

Characterization, Thermolysis, and Energetic Properties of an MTNP/PETN Eutectic Prepared via the Solvent/Anti‐Solvent Method

Characterization, Thermolysis, and Energetic Properties of an MTNP/PETN Eutectic Prepared via the Solvent/Anti‐Solvent Method

An Electrospun Preparation of the NC/GAP/Nano-LLM-105 Nanofiber and Its Properties

Facile fabrication of highly flexible poly(lactic acid) film using alternate multilayers of poly[(butylene adipate)‐co‐terephthalate]

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