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Preparation method of energetic film Ni-Cr igniter wire initiating explosive device with high ignition capacity

A kind of pyrotechnics, ni-cr technology, applied in attack equipment, fuze, electrophoretic plating, etc., can solve the problems of in-situ synthesis operation troublesome, small size of Ni-Cr bridge wire, etc., to achieve convenient assembly and integration, improve resistance Static electricity, the effect of reducing static electricity

Active Publication Date: 2021-06-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the small size of Ni-Cr bridge wires, its in situ synthesis operation is cumbersome.

Method used

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  • Preparation method of energetic film Ni-Cr igniter wire initiating explosive device with high ignition capacity
  • Preparation method of energetic film Ni-Cr igniter wire initiating explosive device with high ignition capacity
  • Preparation method of energetic film Ni-Cr igniter wire initiating explosive device with high ignition capacity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of energetic thin film Ni-Cr bridge wire pyrotechnics, the specific steps are as follows:

[0031] Step 1, use deionized water as solvent, configure 0.1M copper sulfate solution, add sodium chloride and sodium citrate dihydrate with a concentration of 5mM, and use carbon paper as the cathode electrode, and use two-step electrophoretic deposition on carbon fiber paper The upper cladding copper layer, the electrophoresis parameter is first 3mA / cm 2 Deposition for 25min, then 30mA / cm 2 Deposit for 5 minutes;

[0032] Step 2, using the Cu-C obtained in Step 1 as the anode, using 0.02M aqueous sodium azide solution as the electrolyte, at a current density of 2mA / cm 2 azide reaction for 30 minutes, washed and dried to obtain a cuprous azide film;

[0033] Step 3: Assemble and integrate the cut cuprous azide film and the Ni-Cr bridge wire pyrotechnic device, and fix them with a Ni-Cr bridge wire pressure cap.

Embodiment 2

[0035] The preparation of energetic thin film Ni-Cr bridge wire pyrotechnics, the specific steps are as follows:

[0036] Step 1, use deionized water as solvent, configure 0.2M copper sulfate solution, add sodium chloride and sodium citrate dihydrate with a concentration of 5mM, and use carbon paper as the cathode electrode, and use two-step electrophoretic deposition on carbon fiber paper The upper cladding copper layer, the electrophoresis parameter is first 1mA / cm 2 deposition for 30min, then 20mA / cm 2 Deposit for 10 minutes;

[0037] In step two, the Cu-C obtained in step one is used as the anode, and the 0.01M sodium azide aqueous solution is used as the electrolyte, and the current density is 5mA / cm 2 azide reaction for 10 minutes, washed and dried to obtain a cuprous azide film;

[0038] Step 3: Assemble and integrate the cut cuprous azide film and the Ni-Cr bridge wire pyrotechnic device, and fix them with a Ni-Cr bridge wire pressure cap.

Embodiment 3

[0040] The preparation of energetic thin film Ni-Cr bridge wire pyrotechnics, the specific steps are as follows:

[0041] Step 1, use deionized water as solvent, configure 0.05M copper sulfate solution, add sodium chloride and sodium citrate dihydrate with a concentration of 1mM, and use carbon paper as the cathode electrode, and use two-step electrophoretic deposition on carbon fiber paper The upper cladding copper layer, the electrophoresis parameter is first 5mA / cm 2 deposition for 15min, then 40mA / cm 2 Deposit for 5 minutes;

[0042] In step 2, use the Cu-C obtained in step 1 as the anode, and use 0.02M aqueous sodium azide solution as the electrolyte, at a current density of 3mA / cm 2 azide reaction for 20 minutes, washed and dried to obtain a cuprous azide film;

[0043] Step 3: Assemble and integrate the cut cuprous azide film and the Ni-Cr bridge wire pyrotechnic device, and fix them with a Ni-Cr bridge wire pressure cap.

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Abstract

The invention discloses a preparation method of an energetic film Ni-Cr igniter wire initiating explosive device with high ignition capacity. The energetic film Ni-Cr igniter wire initiating explosive device is obtained by integrating a cuprous azide-loaded energetic film and a Ni-Cr igniter wire initiating explosive device in an assembling mode, and specifically, a copper source is electrochemically deposited on a conductive carbon skeleton, a cuprous azide film is obtained through a liquid-solid azide method, and the cut cuprous azide film and the igniter wire initiating explosive device are integrated and fixed by using an igniter wire initiating explosive device pressing cap. The preparation method of the energetic film Ni-Cr igniter wire initiating explosive device with the high ignition capacity is simple and efficient, the cuprous azide on the energetic film is evenly distributed on carbon fibers, the integrated Ni-Cr igniter wire initiating explosive device can generate high-temperature composite flames in the ignition process through the loaded cuprous azide film, the output energy of the Ni-Cr igniter wire initiating explosive device is improved, the ignition capacity of secondary charge is enhanced, and the electrostatic sensitivity is reduced; and the preparation method of the energetic film Ni-Cr igniter wire initiating explosive device with the high ignition capacity has the characteristics of high output capability and high safety.

Description

technical field [0001] The invention belongs to the technical field of preparation of Ni-Cr bridge wire pyrotechnic products, and relates to a preparation method of an energetic film Ni-Cr bridge wire pyrotechnic product with strong ignition capability. Background technique [0002] Ni-Cr bridge wire is a kind of energy conversion element that converts electrical energy into heat energy. It is often used in devices that convert electrical energy into ignition energy of agents, such as ignition and separation devices for weapons and aerospace vehicles. With the development of pyrotechnics technology, the application of Ni-Cr bridge wire pyrotechnics is greatly limited due to its low output energy and long action time. [0003] In order to enhance the ignition capability of Ni-Cr bridge wire pyrotechnics, it is common to load a layer of energetic agent on the surface of Ni-Cr bridge wire, and the most common agent is copper azide. As an energetic material with high energy den...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42C19/12C06C7/02C25D11/00C25D13/02
CPCF42C19/12C06C7/02C25D13/02C25D11/00
Inventor 张文超陈俊宏俞春培陈亚杰杨格行宋长坤王嘉鑫刘佳琪邬润辉先明春
Owner NANJING UNIV OF SCI & TECH
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