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High-energy silver cluster-based assembly ignition material and preparation method thereof

A silver-cluster-based, silver-cluster technology, applied in the intersection of nanoclusters and coordination chemistry, can solve problems such as difficulty in igniting performance and high energy

Active Publication Date: 2022-05-31
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to develop a novel, high-energy self-ignition ignition material, the purpose of the present invention is to synthesize a self-ignition ignition material with high energy and excellent ignition performance to solve the problem that it is difficult to balance the ignition performance and high energy of traditional self-ignition materials; another purpose is to provide its preparation method

Method used

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  • High-energy silver cluster-based assembly ignition material and preparation method thereof
  • High-energy silver cluster-based assembly ignition material and preparation method thereof
  • High-energy silver cluster-based assembly ignition material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] Example 1: Synthesis of ZZU-361, ZZU-362, ZZU-363 of the present invention

[0028] (1) Synthesis of silver propargyl imidazole: silver oxide (Ag 2 O) be dissolved in ammoniacal liquor under ice-water bath condition, stir, until dissolve completely, then slowly add the 1-propargyl imidazole dissolved in ethanol dropwise in silver oxide ammonia aqueous solution, stir reaction, after reaction finishes, suction filtration , washed the precipitate with ethanol and ether to obtain silver propargyl imidazole. The molar ratio of silver oxide / ammonia / propargyl imidazole is 1:2:2.

[0029] (2) ZZU-361: with dimethylformamide (DMF) / methanol (CH 3 OH) (v / v=2 / 1, 6mL) mixed with CF 3Dissolve silver propargyl imidazole (11.0 mg, 0.05 mmol) and silver trifluoroacetate (11 mg, 0.05 mmol) in COOH (10 μL) solution, stir overnight, filter, and evaporate the clear liquid at room temperature for several days to obtain a colorless transparent bulk crystals.

[0030] ZZU-362: Similar to ...

Embodiment 2

[0040] Structural stability test of ZZU-361, ZZU-362, and ZZU-363: The above materials were placed in different humidity environments for three days. The PXRD test showed that they could well maintain the structural stability.

[0041] Ignition performance test of ZZU-361, ZZU-362, ZZU-363: using a standard ignition test experiment, select a certain amount of ignition material (about 15mg) in a 5mL glass container, place it in a room temperature environment, use a pipette Pipette a drop (approximately 30 μL) of WFNA, from a fixed height, into the reaction vessel. The moment when the oxidant contacts the material is recorded as the reaction zero point, until the first flame appears in the reaction vessel, and the intermediate interval is recorded as the ignition delay time. From the experimental results, it can be known that the ignition delay time of the material ZZU-361 The ignition delay time of material ZZU-362 is 59ms, while that of ZZU-363 is 26ms. From the point of view...

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Abstract

The invention belongs to the intersection field of nanometer clusters and coordination chemistry, and discloses a novel high-energy cluster assembly ignition material and a preparation method thereof. It uses metal clusters as structural nodes, and connects them through energetic bridging ligands 1-propargyl imidazole to form silver cluster-based assembly materials. Its chemical formula is: Ag 12 (CF 3 COO) 6 (C 6 h 5 N 2 ) 6 (ZZU‑361), Ag 14 (CF 3 COO) 6 (C 6 h 5 N 2 ) 8 (ZZU‑362), Ag 8 (C 6 h 5 N 2 ) 4 (NO 3 ) 4 (ZZU‑363), in which the compound ZZU‑363 contains a large number of energetic nitrate groups and a unique molecular structure, resulting in excellent ignition performance, with an ignition delay time of 26 ms and a volumetric energy density of 40.4 kJ cm ‑3 . This type of material can meet the requirements of modern spacecraft for propellants and can be used as fuel for aerospace engines.

Description

technical field [0001] The invention belongs to the cross field of nano-clusters and coordination chemistry, and particularly relates to a novel ignition material capable of realizing high-energy cluster assembly and a preparation method thereof. Background technique [0002] Ignition materials are used as the power source of rockets and spacecraft, and the power provided determines the altitude, range and service life of the spacecraft. However, some common rocket propellants, such as the Atlas-Centauri rocket, use liquid H 2 / O 2 As propellant, the Long March 3B rocket uses unsymmetrical dimethyl hydrazine / N 2 O 4 As a propellant, it has some obvious shortcomings: it is extremely toxic and carcinogenic, and it is extremely harsh for storage conditions. In addition, there have been serious accidents in the history of space flight, resulting in serious pollution and extreme pollution. large economic losses. With the increasingly serious environmental pollution and the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00
CPCC08G83/008Y02P20/54
Inventor 臧双全王乾有王超
Owner ZHENGZHOU UNIV
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