Preparation and Characterization of Direct Write Explosive Ink Based on CL-20

Zhang, Lei; Zhang, Fang; Wang, Yanlan; Han, Ruishan; Yang, Li

doi:10.1088/1742-6596/1209/1/012016

Cited by 5 publications

(5 citation statements)

References 4 publications

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“…Such weak intensities are attributed to a reduction in the content of RDX in the DIW ink. The differences in XRD peak profiles indicate that variable crystallographic phases and shapes were obtained [ 12 , 24 ]. The measured sample was in the form of dendrite-like crystals, which was different from the single crystal form of raw RDX powder attributed to the peak shift.…”

Section: Resultsmentioning

confidence: 99%

“…The Si-based safe initiator layer contains a micro-actuator, which will be ignited to generate gases that move the screen into the armed position, and a micro-initiator, which will ignite the primary explosive located in its cavity. The charging method for the energetic material in a micro-actuator and a micro-initiator cavity in integrated micro-electro-mechanical system (MEMS) and SAF devices, however, must be precise, automated, and safe [ 12 , 13 , 14 ]. The traditional ways, such as mold pressing and cast molding, are inadequate for fusing in MEMSs due to the slow solidification of the drug column and the lack of accuracy in forming a small-sized explosive column.…”

Section: Introductionmentioning

confidence: 99%

“…Many printing methods have been used to generate micro-patterns for the deposition of conductive, ferromagnetic, piezoelectric, and energetic materials [9,[15][16][17]. Those Micromachines 2021, 12, 105 2 of 8 functional patterns can be designed and printed directly from electronic designed files without the need for a mask or a mold. However, the printing of energetic materials from an all-liquid ink to create micro-patterns is generally difficult because the typical solvent used in the ink and the solid crystals can cause malfunctions in the printing head and clog the nozzle, respectively.…”

Section: Introductionmentioning

confidence: 99%

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A Simple Route of Printing Explosive Crystalized Micro-Patterns by Using Direct Ink Writing

et al. 2021

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The production of energetic crystalized micro-patterns by using one-step printing has become a recent trend in energetic materials engineering. We report a direct ink writing (DIW) approach in which micro-scale energetic composites composed of 1,3,5-trinitro-1,3,5-triazinane (RDX) crystals in selected ink formulations of a cellulose acetate butyrate (CAB) matrix are produced based on a direct phase transformation from organic, solvent-based, all-liquid ink. Using the formulated RDX ink and the DIW method, we printed crystalized RDX micro-patterns of various sizes and shapes on silicon wafers. The crystalized RDX micro-patterns contained single crystals on pristine Si wafers while the micro-patterns containing dendrite crystals were produced on UV-ozone (UVO)-treated Si wafers. The printing method and the formulated all-liquid ink make up a simple route for designing and printing energetic micro-patterns for micro-electromechanical systems.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Simple Route of Printing Explosive Crystalized Micro-Patterns by Using Direct Ink Writing

et al. 2021

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“…Currently, most research in the industry focuses on alcohol-water blended binders, which can provide better print-forming samples. However, this approach has limited material selection and cannot incorporate ester polymer compounds into the binder system [15][16][17][18]. However, the oil phase in oil-in-water emulsions may employ ester as solvents [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Design of TDI modified oil‐in‐water emulsion and its application in explosive ink

Han

Xie²,

Deng

et al. 2023

Propellants Explo Pyrotec

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In order to solve the short stabilization time of the water‐in‐oil emulsion binder system and the shortcomings of the critical blast size of the explosive ink molding sample, a water‐in‐oil emulsion binder was designed with polyvinyl alcohol (PVA) aqueous solution as the aqueous phase, fluorocarbon resin (FEVE) ethyl acetate solution as the oil phase, and toluene diisocyanate (TDI) added to modify the water‐in‐oil emulsion binder. The hexanitrohexaazaisowurtzitane(CL‐20)based explosive ink was made by incorporating submicron CL‐20 into the binder system, and the print‐formed samples were tested for microscopic morphology, crystallographic analysis, mechanical susceptibility, and detonation transmission performance. The results showed that the explosive ink‘s viscosity was moderate and suitable for direct printing, and the formed sample‘s surface particles were uniformly dispersed and had a honeycomb structure. The crystal form of CL‐20 explosive in the explosive ink did not change, the molded sample‘s impact and frictional sensitivities were 1 J and 32 N lower than those of submicron CL‐20, respectively, and the detonation velocity of the molded sample was 6655 m/s. The critical detonation size and critical detonation thickness were 1×0.0078 mm and 0.1 mm, respectively, and a critical detonation corner turning of 90°–160° could be achieved. The results show that the prepared binder system is stable for a long time, and the explosive ink molding samples have excellent blast transmission performance.

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“…After the ink was cured, the detonation critical size and detonation velocity can reach 86 µm (0.51 mm charge width) and 7150 m•s −1 , respectively. Subsequently, Z. Q. Zhu et al [19], D. J. Wang et al [20], Q. B. Li et al [21] designed various CL-20-based explosive ink formulations and respectively used direct writing technology to write them in micro grooves.…”

Section: Introductionmentioning

confidence: 99%

Inkjet Printing of GAP/NC/DNTF Based Microscale Booster with High Strength for PyroMEMS

Guo

Long

et al. 2020

Micromachines

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In order to improve the mechanical strength of micro-booster based on 3,4-dinitrofurazanofuroxan (DNTF), 2,4-toluene diisocyanate (TDI) was introduced into the composite binder of nitrocotton (NC) and glycidyl azide polymer (GAP). A full-liquid explosive ink containing DNTF, binder and solvent was printed layer by layer. By the polymer cross-linking technology, the inkjet printed sample with three-dimensional network structure was obtained. The morphology, crystal form, density, mechanical strength, thermal decomposition and micro scale detonation properties of the printed samples were tested and analyzed. The results show that the printed sample has a smooth surface and a dense internal microstructure, and the thickness of the single layer printing is less than 10 μm. Compared with the raw material DNTF, the thermal decomposition temperature and activation energy of the printed samples do not change significantly, indicating better thermal stability. The addition of curing agent TDI increases the mechanical properties and charge density of the energetic composites. The elastic modulus and hardness are increased by more than 20%. The charge density can attain 1.773 g·cm−3, which can reach 95.5% of the theoretical density. The critical detonation size of the sample can reach 1 mm × 0.01 mm or less and the detonation velocity can achieve 8686 m·s−1, which exhibits excellent micro-scale detonation ability.

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Preparation and Characterization of Direct Write Explosive Ink Based on CL-20

Cited by 5 publications

References 4 publications

A Simple Route of Printing Explosive Crystalized Micro-Patterns by Using Direct Ink Writing

A Simple Route of Printing Explosive Crystalized Micro-Patterns by Using Direct Ink Writing

Design of TDI modified oil‐in‐water emulsion and its application in explosive ink

Inkjet Printing of GAP/NC/DNTF Based Microscale Booster with High Strength for PyroMEMS

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