Preparation method of energetic film ni-cr bridge wire pyrotechnic product with strong ignition ability

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

Active Publication Date: 2022-06-24
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 bridge wire pyrotechnic product with strong ignition ability
  • Preparation method of energetic film ni-cr bridge wire pyrotechnic product with strong ignition ability
  • Preparation method of energetic film ni-cr bridge wire pyrotechnic product with strong ignition ability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0032] In the second step, the Cu-C obtained in the first step is used as the anode, and the 0.02M sodium azide aqueous solution is used as the electrolyte, and the current density is 2 mA / cm. 2 The azide reaction was carried out for 30min, 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 initiating product, and fix it with a Ni-Cr bridge wire pressing cap.

Embodiment 2

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

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

[0037] In the second step, the Cu-C obtained in the first step is used as the anode, and the 0.01M sodium azide aqueous solution is used as the electrolyte, and the current density is 5 mA / cm. 2 The azide reaction was carried out for 10 min, 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 initiating product, and fix it with a Ni-Cr bridge wire pressing ...

Embodiment 3

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

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

[0042] In the second step, the Cu-C obtained in the first step is used as the anode, and the 0.02M sodium azide aqueous solution is used as the electrolyte, and the current density is 3 mA / cm. 2 The azide reaction was carried out for 20min, 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 initiating product, and fix it with a Ni-Cr bridge wire pressi...

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Abstract

The invention discloses a preparation method of an energetic film Ni-Cr bridge wire pyrotechnic product with strong ignition capability. The energetic thin film Ni-Cr bridge wire pyrotechnic product is obtained by integrating the energetic film loaded with cuprous azide and the Ni-Cr bridge wire pyrotechnic device by means of assembly, specifically electrochemically Copper source is deposited, and the cuprous azide film is obtained through the liquid-solid azide method, and the cut cuprous azide film and the bridge wire pyrotechnic device are integrated and fixed by using the bridge wire pyrotechnic device pressure cap. The method of the present invention is simple and efficient, and the cuprous azide on the energetic film is evenly distributed on the carbon fiber, and the integrated Ni-Cr bridge wire pyrotechnic product can generate a high-temperature composite flame during the ignition process by supporting the cuprous azide film, thereby improving the It increases the output energy of Ni-Cr bridge wire pyrotechnics, enhances the ignition ability of the secondary charge, reduces the electrostatic sensitivity, and 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 initiating products, and relates to a preparation method of an energetic thin film Ni-Cr bridge wire initiating product with strong ignition ability. Background technique [0002] Ni-Cr bridge wire is a transducer element that converts electrical energy into thermal energy, and is often used in devices that convert electrical energy into medicament ignition energy, such as ignition and separation devices for weapons and aerospace vehicles. With the development of pyrotechnic technology, the application of Ni-Cr bridge wire pyrotechnics has been greatly restricted due to low output energy and long action time. [0003] In order to enhance the ignition ability of the Ni-Cr bridge wire, it is common to load a layer of energetic agents on the surface of the Ni-Cr bridge wire, and the most common agent is copper azide. As a kind of energetic material with high energy density, ...

Claims

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Application Information

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Patent Type & Authority Patents(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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