An Experimental Comparison of Selected Blue Flame Pyrotechnics

Juknelevicius, Dominykas; Hahma, Arno; Webb, Rutger; Klapötke, Thomas M.; Ramanavičius, Arūnas

doi:10.1002/prep.202000114

Cited by 12 publications

(14 citation statements)

References 8 publications

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“…Thermal analysis is one of the important methods for evaluating the thermal stability of energetic materials. 32,33 Therefore, we conducted DSC-TG and DTA testing to analyze the thermal behavior of ECP-1 (test conditions: heating rate: 5 1C min À1 , atmosphere: N 2 ).…”

Section: Physicochemical Stability Analysismentioning

confidence: 99%

Constructing a graphene-like structure to lower friction sensitivity: Ag(i) complexes based on furan-2,5-dicarbohydrazide

Zhang,

Wang,

et al. 2023

New J. Chem.

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Section: Physicochemical Stability Analysismentioning

confidence: 99%

Constructing a graphene-like structure to lower friction sensitivity: Ag(i) complexes based on furan-2,5-dicarbohydrazide

Zhang,

Wang,

et al. 2023

New J. Chem.

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“…It found that the Lsp value is comparable to the total amount of oxygen and nitrogen present in the gas generating additive [19]. Further, blue color, with the wavelength ranging from 425 -500 nm, is commonly generated from copper based-compounds such as CuCO3.Cu(OH)2 [13], Cu powder electrolytic, basic copper carbonate Cu2(CO3)(OH)2, copper benzoate, Paris green, CuOCl, CuO [20] and Cu3Cl3 [21]. Juknelevious et al [22], reported the use of the pyrotechnic composition to develop the blue strobe using a formulation called Jennings-White's blue strobe No.5, which could maintain the flame color quality [22].…”

Section: Introductionmentioning

confidence: 99%

Novel CaCO3-Based Material Formulation for Orange-Colored Spectrum Tracer Projectile

Asri¹,

Basyir²,

Aryanto³

et al. 2022

Trends Sci

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This study underlines the development of orange-colored spectrum tracer material based on Fe/CaCO3/PVC compound. The optimum composition of the compound was determined by comparing three different ratios of Fe-CaCO3-PVC. The sample with the highest CaCO3 content decomposed earlier than that of the other samples. This sample also produced the lowest calorific energy around 275.61 cal/g and emitted a medium-dark orange spectrum. The color brightness was affected by the number of color source materials as well as CaCl2 and Ca(OH)2 which were formed during the combustion process. Meanwhile, the sample with the lowest CaCO3 content produced light orange color with a sharp spectrum emission. The concentration of fuel material (Fe) as well as the higher calorific energy (466.39 cal/g) of this composition contributes to the enhanced spectrum intensity. All samples emitted the orange color, with the wavelength ranging from 585 to 593 nm. Beside of calcite as the main phase, the x-ray diffraction analysis at 650 ℃ shows Fe2O3 as a secondary phase. The FTIR analysis of the as-heated sample presents the Fe-O bending band with a broader peak, which can be attributed to the existence of Fe2O3 species. The presence of this structure made all these samples have high ignition temperature. HIGHLIGHTS The tracer formulation contain iron, CaCO3 and polyvinyl chloride Iron fuel influences the thermal stability of tracer material The tracer composition emits orange-color start from 587 to 594 nm wavelength The highest spectrum intensity found at composition with containing greatest iron fuel GRAPHICAL ABSTRACT

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“…Classical energetic ionic salts are formed by combining organic skeleton molecules with oxidizing acids (such as HClO 4 and HNO 3 ). − Among them, most organic skeleton molecules come from heterocyclic rings, such as triazole and tetrazole, which can be modified by adding groups such as −NH 2 , −OH, and −NO 2 to change their N and O contents. , Oxidative acid ions can make great contributions to improving oxygen balance and detonation performance. , ECPs are obtained by the coordination covalent bond between ligands and metal ions. The difference is that the ligands here are diverse.…”

Section: Introductionmentioning

confidence: 99%

Keeping the Same Ratio of the Ligand and Perchlorate: Realizing the High Performance of Energetic Materials by Changing the Bonding Mode

Zhang

Wang

et al. 2023

J. Phys. Chem. C

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In addition to the three classical methods for adjusting the performance of energetic complexes, in order to explore the influence of different bonding types on the performance of energetic materials, we designed ionic salts PZCA•HClO 4 (3) and ECPs [Ag(PZCA)ClO 4 ] n (4) with PZCA(1H-pyrazole-4carbohydrazide) as the ligand. They use the same ligands and oxidizing acids and also have the same N/O number. On the basis of their structures and compositions confirmed by infrared spectroscopy, elemental analysis, and single-crystal X-ray diffraction, the characterization of physical and chemical properties shows that 4 has better thermal decomposition behavior (ΔT = 30 °C), more suitable mechanical sensitivity (IS = 5 J, FS = 9 N), and more outstanding initiation performance. After studying the decomposition mechanism, we find that different types of bonds (H bond or coordination covalent bond) lead to different decomposition mechanisms (redox reaction or free radical reaction) and, finally, show great differences in explosive properties.

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An Experimental Comparison of Selected Blue Flame Pyrotechnics

Cited by 12 publications

References 8 publications

Constructing a graphene-like structure to lower friction sensitivity: Ag(i) complexes based on furan-2,5-dicarbohydrazide

Constructing a graphene-like structure to lower friction sensitivity: Ag(i) complexes based on furan-2,5-dicarbohydrazide

Novel CaCO3-Based Material Formulation for Orange-Colored Spectrum Tracer Projectile

Keeping the Same Ratio of the Ligand and Perchlorate: Realizing the High Performance of Energetic Materials by Changing the Bonding Mode

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