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Micro-miniature igniter based on micro-heater and structural energetic material and preparation of micro-miniature igniter

A technology of micro-heater and igniter, which is applied in the direction of weapon accessories, offensive equipment, blasting barrels, etc.

Active Publication Date: 2020-11-17
香港城市大学深圳研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, micro-miniature igniters based on micro-heaters and structural energetic materials, especially micro-miniature igniters based on micro-heaters and embedded explosive thermite array waterproof structural energetic materials, have not been reported yet.

Method used

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  • Micro-miniature igniter based on micro-heater and structural energetic material and preparation of micro-miniature igniter
  • Micro-miniature igniter based on micro-heater and structural energetic material and preparation of micro-miniature igniter
  • Micro-miniature igniter based on micro-heater and structural energetic material and preparation of micro-miniature igniter

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Effect test

preparation example Construction

[0074] The invention also relates to a preparation method of a micro-miniature igniter based on a micro-heater and a waterproof structure energy-containing material embedded with an explosive thermite array. The method comprises the following steps: step 1: preparing a micro heater; step 2: preparing a structure thermite array; step 3: complying with explosives in situ; and step 4: encapsulating hydrophobic materials.

[0075] Figure 1-Figure 4 Shown are the steps of a preferred preparation method of the present invention. In step 1, materials are sequentially deposited on the substrate by photolithography and physical deposition processes to prepare micro heaters. The material composition of the micro-heater is an adhesion layer 2 , a heater layer 3 and a bonding layer 4 sequentially from the base material 1 . The adhesion layer 2 can be selected according to the materials of the substrate 1 and the heater layer 3, such as but not limited to titanium (Ti), chromium (Cr), t...

Embodiment 1

[0085] A micro-heater with a specific shape is prepared on the surface of a silicon wafer by photolithography. The adhesion layer Cr, the heater layer Pt, and the bonding layer Au are sequentially deposited outside the area covered by the photoresist mask layer by thermal evaporation, and then the Au outside the bonding area is removed by photolithography to expose the heater. Area Pt.

[0086] Outside the heater region was protected by a photoresist mask layer, 100 nm CuO was deposited by magnetron sputtering, followed by 1.5 µm Cu by electron beam evaporation. Thermal oxidation at 400 °C for 12 h in a furnace filled with static air allowed Cu to grow into CuO nanowire arrays. Al was then deposited outside the CuO nanowires with a nominal thickness of 1 μm by electron-beam evaporation in order to obtain a core-shell CuO / Al nanorod array.

[0087] Next, 43.8 mg of CL20 was added to 0.5 ml of acetone, ultrasonicated for 5 minutes, and 10 microliters of the resulting solution ...

Embodiment 2

[0089] A micro-heater with a specific shape is prepared on the surface of a silicon wafer by photolithography. The adhesion layer Cr, the heater layer Pt, and the bonding layer Au are sequentially deposited outside the area covered by the photoresist mask layer by thermal evaporation, and then the Au outside the bonding area is removed by photolithography to expose the heater. Area Pt.

[0090] The area outside the heater area was protected by a photoresist mask layer, and Mg was deposited by thermal evaporation at a grazing angle of 84 degrees to obtain Mg nanorod arrays. Copper oxide with a nominal thickness of 200 nm was then deposited outside the Mg nanorods by magnetron sputtering to obtain a core-shell Mg / CuO nanorod array.

[0091] Next, 11 mg of CL20 was added to 0.1 ml of acetone, ultrasonicated for 5 minutes, and 10 microliters of the resulting solution was added dropwise to the CuO / Al nanostructure array. After being placed in the fume hood for 30 minutes, deposit...

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Abstract

The invention discloses a micro-miniature igniter based on a micro-heater and a structural energetic material and preparation of the micro-miniature igniter. The structure of the micro-miniature igniter comprises the micro-heater, a structural thermite array, an explosive layer and a waterproof layer; the micro-heater comprises a bonding area and a heating area; the structural thermite array is formed in the heating area; the explosive layer is embedded in the structural thermite array in situ; and the waterproof layer encapsulates the structural thermite array. The structural energetic material in the micro-miniature igniter is the thermite array with the explosive embedded and has the waterproof performance, so that energy release of the igniter is improved, the moisture resistance and the oxidation resistance of the igniter are improved, and the ignition reliability is guaranteed.

Description

technical field [0001] The invention relates to the technical field of igniters, in particular to a micro-miniature igniter based on micro-heaters and structural energetic materials and its preparation. Background technique [0002] The igniter is a one-time-use device that can generate enough energy to ignite fuel or detonate explosives in a very short time. It can be used in various ignition and detonation operations, such as aerospace propulsion, weapon system detonation and detonation sequence , safety self-destruct devices and other military fields, as well as civilian fields such as automobile or drone airbag gas generators, oil exploration, mine blasting, and festival celebrations. The conventional igniter is a metal bridge wire igniter, which has a simple structure and is easy to manufacture; however, its ignition powder has a low ignition point, which poses a safety hazard, and is easy to deliquesce in a humid environment, making the performance stability and reliab...

Claims

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Application Information

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IPC IPC(8): F42B3/11F42B3/195
CPCF42B3/11F42B3/195
Inventor 朱莹马小霞吕坚张开黎
Owner 香港城市大学深圳研究院
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