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DOI: 10.3390/mi11040415
¤ OpenAccess: Gold
This work has “Gold” OA status. This means it is published in an Open Access journal that is indexed by the DOAJ.

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

Yining He,Xiuti Guo,Yanling Long,Guangwu Huang,Xiangpu Ren,Chuanhao Xu,Chongwei An

Materials science
Composite material
Detonation
2020
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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    Inkjet Printing of GAP/NC/DNTF Based Microscale Booster with High Strength for PyroMEMS” is a paper by Yining He Xiuti Guo Yanling Long Guangwu Huang Xiangpu Ren Chuanhao Xu Chongwei An published in 2020. It has an Open Access status of “gold”. You can read and download a PDF Full Text of this paper here.