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Green gas generating agent hydrated pentazole metal salt and preparation method thereof

A technology of hydrated pentazole and green gas, which is applied in the field of green gas generating agent hydrated pentazole metal salt and its preparation, can solve problems such as burning out of control, achieve good thermal stability, and the effect of simple and efficient preparation method

Inactive Publication Date: 2018-09-07
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these combustibles may have the hidden danger of burning out of control under extreme conditions such as danger or aging.

Method used

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  • Green gas generating agent hydrated pentazole metal salt and preparation method thereof
  • Green gas generating agent hydrated pentazole metal salt and preparation method thereof
  • Green gas generating agent hydrated pentazole metal salt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of pentazole anion solution

[0046] see Figure 5As shown, add 5mL of methanol / acetonitrile into a 25mL three-necked flask, place it in a low-temperature reactor and cool it down to -45°C, and then add 0.191g of 3,5-dimethyl-4-hydroxyarylpentazole (1mmol) , Dissolve 0.966g of tetrabutylammonium bromide (3mmol) in a mixed solution of 1mL of deionized water + 1mL of methanol, cool to -45°C and add to a three-necked flask. Subsequently, 1.645g of cerium ammonium nitrate (3mmol) and 0.1g of ferrous chloride tetrahydrate (0.5mmol) were dissolved in a mixed solution of 3mL of deionized water and 3mL of methanol, cooled to -45°C and added dropwise to a three-necked flask , after stirring and reacting for 30 min, the temperature was raised to 0° C., and the reaction was continued for 2 hours. The reaction solution was detected by mass spectrometry, and it was confirmed that pentazole negative ions were generated. Then filter, spin evaporate, soak with 10ml of met...

Embodiment 2

[0048] Taking sodium chloride as an example to prepare the crystal of pentazole sodium

[0049] Configure the ethanol / water (volume ratio 1:1) mixed solution of sodium chloride NaC, and the concentration is 1 mol / L; Configure the ethanol / water (volume ratio 1:1) mixed solution of pentazole, and the concentration is 1mol / L; Mix the above two solutions in equal volumes. If a small amount of precipitate precipitates or becomes turbid immediately after mixing, add ethanol or deionized water until clarification; ultrasonic for 30 minutes, filter with an ultrafiltration membrane; place in a constant temperature and humidity box, 70 ℃, humidity 10%, until 1 / 2 of the solvent evaporates; lower the temperature to 10 ℃, humidity 100%, the solvent slowly evaporates, and crystals form.

Embodiment 3

[0051] The volume ratio of the two ethanol / water solutions in Example 2 was adjusted to 60%:40%, and the temperature of the constant temperature and humidity box was set at 40°C to stand still. The obtained crystals were characterized as in Example 2.

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Abstract

The invention discloses a preparation method of a green gas generating agent hydrate pentazole metal salt. The preparation method of the green gas generating agent hydrate pentazole metal salt NaN5.H2O is simple and efficient and has a metal inorganic frame structure; through thermal decomposition representation of the prepared hydrate pentazole metal salt by a thermodynamics-mass spectrum instrument, the structure has good thermal stability; and when the structure is heated to 150 DEG C, a large amount of nitrogen can be released while no combustible gas or toxic gas is generated. The hydrate pentazole metal salt NaN5.H2O prepared according to the invention is a green environment-friendly gas generating agent with excellent comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of energetic materials, and relates to a green gas generating agent hydrated pentazole metal salt and a preparation method thereof. Background technique [0002] Gas generating agent, also known as gas generating agent, refers to various substances that can generate gas after combustion, and belongs to a category of solid propellants. Because the technology of sodium azide-based gas generating agent is relatively mature, it is still mainly used in airbags at present, but its severe toxicity affects its use. The research on non-azide gas generating agents is becoming more and more active, including gas generating agents of azoles, azines, guanidines, azos and other combustibles. However, under extreme conditions such as danger or aging, these combustibles may have the hidden danger of burning out of control. Therefore, it is imperative to develop green gas generants. [0003] Therefore, need to provide a k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B43/00C06D5/04
CPCC06B43/00C06D5/04
Inventor 陆明王鹏程林秋汉许元刚王乾
Owner NANJING UNIV OF SCI & TECH
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