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A kind of pyrotechnic gas generating agent and preparation method thereof

A gas generating agent and pyrotechnic technology, which is applied in the production of compressed gas, attacking equipment, etc., can solve the problems of restricting the application of gas generating agent, reducing the density of energetic materials, and reducing detonation performance, so as to improve the safety of use, reduce the The effect of preparation cost and simple preparation process

Active Publication Date: 2019-05-14
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-nitrogen compound combustibles commonly used in the gas generating agent are nitroguanidine, guanidine nitrate and 5-aminotetrazole etc., the gas generating agent that the described combustible preparation produces when burning contains a large amount (accounting for the total More than 30% of the gas volume) water vapor rapidly condenses at 100°C, resulting in a series of safety problems caused by large fluctuations in system pressure, which largely limits the application of gas generating agents
The increase of hydrogen will reduce the density of the energetic material itself, and also reduce its detonation performance (such as detonation pressure, detonation velocity, etc.) when it is used as a high-energy explosive

Method used

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  • A kind of pyrotechnic gas generating agent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] A pyrotechnic gas generating agent, based on the mass of the gas generating agent as 100%, its composition and mass fraction are: 4,5-bistetrazolyl-1,2,3-triazole (BTTZ)36 % (21.6g), LiNO 3 45% (27g), Fe 2 o 3 3% (1.8g), CuO 2% (1.2g), azotetrazolium diguanidine (GZT) 13% (7.8g) and phenolic resin 1% (0.6g);

[0033] A preparation method of pyrotechnic gas generating agent is as follows:

[0034] Step 1. Add LiNO 3Ball milled in a ball mill at 200r / min for 30min; put BTTZ in a quartz mortar and grind for 20min, and the ground LiNO 3 and BTTZ are placed in a desiccator for drying; the dried LiNO 3 and BTTZ were passed through a 100-mesh sieve, and the sieve was repeated 3 times to obtain LiNO with a particle size of ≤0.15mm 3 And BTTZ with particle size ≤0.15mm;

[0035] Step 2. LiNO with particle size ≤ 0.15mm 3 , BTTZ, Fe with particle size ≤0.15mm 2 o 3 , CuO and GZT are fully mixed, pass through a 50-mesh sieve, and repeat the sieve 4 times to obtain a unif...

Embodiment 2

[0037] A pyrotechnic gas generating agent, based on the mass of the gas generating agent as 100%, its composition and mass fraction are: 4,5-bistetrazolyl-1,2,3-triazole (BTTZ)32 % (19.2g), NaNO 3 57% (34.2g), Fe 2 o 3 2% (1.2g), CuO 1% (0.6g), Al(OH) 3 7% (4.2g) and phenolic resin 1% (0.6g);

[0038] A preparation method of pyrotechnic gas generating agent is as follows:

[0039] Step 1. Add NaNO 3 Ball milled in a ball mill at 200r / min for 40min; put BTTZ in a quartz mortar and grind for 20min, and the ground NaNO 3 and BTTZ is placed in a desiccator for drying; the dried NaNO 3 and BTTZ were passed through a 100-mesh sieve, and the sieve was repeated 4 times to obtain NaNO with a particle size of ≤0.15mm 3 And BTTZ with particle size ≤0.15mm;

[0040] Step 2. NaNO with particle size ≤ 0.15mm 3 , BTTZ, Fe with particle size ≤0.15mm 2 o 3 , CuO and Al(OH) 3 After fully mixing, pass through a 50-mesh sieve, and repeat the sieve 3 times to obtain a uniformly mixed p...

Embodiment 3

[0042] A pyrotechnic gas generating agent, based on the mass of the gas generating agent as 100%, its composition and mass fraction are: 4,5-bistetrazolyl-1,2,3-triazole (BTTZ)30 % (18g), KNO 3 50% (30g), Fe 2 o 3 2% (1.2g), CuO2% (1.2g), NaHCO 3 14% (8.4g) and rosin 2% (1.2g);

[0043] A preparation method of pyrotechnic gas generating agent is as follows:

[0044] Step 1. Put the KNO 3 Ball milled in a ball mill at 200r / min for 35min; put BTTZ in a quartz mortar and grind for 20min, and grind the KNO 3 and BTTZ are placed in a desiccator for drying; the dried KNO 3 and BTTZ were passed through a 100-mesh sieve, and the sieve was repeated 3 times to obtain KNO with a particle size of ≤0.15mm 3 And BTTZ with particle size ≤0.15mm;

[0045] Step 2. KNO with particle size ≤ 0.15mm 3 , BTTZ, Fe with particle size ≤0.15mm 2 o 3 , CuO and NaHCO 3 After fully mixing, pass through a 50-mesh sieve, and repeat the sieve 3 times to obtain a uniformly mixed powder; add 60 mL ...

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Abstract

The invention relates to a pyrotechnic gas generating agent and a preparation method and belongs to the technical field of gas generating agents. The composition of the pyrotechnic gas generating agent contains 4,5-bitetrozol-1,2,3-triazole, Fe2O3, CuO, oxidizing agents, catalysts, cooling agents and binders. The preparation method includes the steps of sufficiently evenly mixing the oxidizing agents with grain size smaller than or equal to 0.15 mm, 4,5-tetrozol-1,2,3-triazole with the grain size smaller than or equal to 0.15 mm, Fe2O3, CuO and cooling agents, and passing through a 50-mesh sieve to obtain evenly mixed powder; adding an organic solution of the binders into the evenly mixed powder, evenly mixing, passing through a 20-mesh sieve, drying the sieved powder, and passing througha 50-mesh sieve to obtain solid particles; putting the solid particles into an oil press for tabletting to obtain the gas generating agent. The gases generated by the gas generating agent are clean and cause no environment pollution.

Description

technical field [0001] The invention relates to a pyrotechnic gas generating agent and a preparation method thereof, in particular to a pyrotechnic gas generating agent using 4,5-bistetrazolyl-1,2,3-triazole as a combustible agent and a preparation method thereof, belonging to Gas generating agent technical field. Background technique [0002] Pyrotechnic gas generating agent is a kind of pyrotechnic agent that can generate a large amount of gas by means of rapid chemical reaction (combustion). And gyro rotor rotation, aircraft pilot seat ejection and rapid inflation of various life rafts and civil aviation emergency safety slides, spacecraft orbit change, safe landing of UAV and Mars probe, Shenzhou series lift-off propellants, special occasion fast Fire fighting and other fields. [0003] The widely used gas generating agent is NaN 3 / Oxidant system, the gas generating agent of this system has the characteristics of easy ignition, low combustion temperature, good filter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06D5/06
CPCC06D5/06
Inventor 韩志跃姚谦杨月桢张英豪杜志明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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