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Preparation method of sheet-type explosive foil

An explosive foil and sheet technology, applied in blasting barrels, offensive equipment, weapon accessories, etc., can solve problems such as difficulty in mass production, poor product consistency, and complicated assembly process, and achieve mass production, good consistency, and The effect of exempting the assembly process

Active Publication Date: 2021-07-23
NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Sheet-type explosive foil is composed of explosive foil, flyer layer, and acceleration chamber. The flyer layer and acceleration chamber used in most domestic explosive foils are pasted and aligned manually. The assembly process is complicated, it is difficult to achieve mass production, and the product consistency is poor. The complex environment has poor stability and high ignition energy. Therefore, reducing production costs, improving production efficiency, and reducing ignition energy have become the three major problems that need to be solved urgently for explosive foil chips.

Method used

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  • Preparation method of sheet-type explosive foil
  • Preparation method of sheet-type explosive foil

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The preparation steps of the sheet type explosive foil in the present embodiment are as follows:

[0038] a. On a clean ceramic substrate, a WTi layer, a Cu layer and an Au layer are sequentially deposited by physical vapor deposition to form a WTi / Cu / Au composite metal film (the first composite metal film) with a total thickness of 1-8 μm as the transducer Yuan;

[0039] b. Using a photolithography process to etch the WTi / Cu / Au composite metal film (the first composite metal film), prepare an explosive foil pattern array, and form an explosive foil pad area and an explosive foil bridge area;

[0040] c. On the WTi / Cu / Au composite metal film (the first composite metal film), a Parylene film with a thickness of 5-50 μm is deposited by chemical vapor deposition, and then a total thickness of 0.2 is deposited on the Parylene film by physical vapor deposition. ~4μm WTi / Cu / Au composite metal film (the second composite metal film), forming a polymer / metal composite flying sh...

Embodiment 2

[0047] The preparation steps of the sheet type explosive foil in the present embodiment are as follows:

[0048] a. On a clean glass substrate, a NiCr layer, an Al layer and an Au layer are sequentially deposited by physical vapor deposition to form a NiCr / Al / Au composite metal film (the first composite metal film) with a total thickness of 1-8 μm as an energy transducer Yuan;

[0049] b. Using a photolithography process, etch the NiCr / Al / Au composite metal film (the first composite metal film), prepare an explosive foil pattern array, and form an explosive foil pad area and an explosive foil bridge area;

[0050] c. On the NiCr / Al / Au composite metal film (the first composite metal film), a polyimide film with a thickness of 5 to 50 μm is pressed by hot pressing, and then a physical vapor deposition method is used on the polyimide film Depositing a NiCr / Al / Au composite metal film (second composite metal film) with a total thickness of 0.2-4 μm to form a polymer / metal composit...

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Abstract

The invention discloses a preparation method of a sheet-type explosive foil, which comprises the following steps: depositing a first composite metal film on a substrate as a transducer element; using a photolithography process to etch the first composite metal film to prepare a transducer element pattern array; a composite polymer film is deposited on the first composite metal film, and a second composite metal film is deposited on the polymer film to form a polymer / metal composite flyer layer; photolithography is used to etch The second composite metal film is used to prepare a metal flyer pattern array; an epoxy-type photoresist is used to form an acceleration chamber by a photolithography process; a heat treatment process is used to cure the acceleration chamber; and the polymer film is etched, Expose the explosive foil pad area; divide the chip explosive foil pattern array into at least two small units. The explosion foil, the flyer layer and the accelerating chamber are integrally prepared, and the method of the invention greatly improves the production efficiency, and the prepared explosion foil reduces the ignition energy and has good stability and environmental adaptability.

Description

technical field [0001] The invention belongs to the field of in-line explosive foils, and in particular relates to a preparation method of sheet explosive foils. Background technique [0002] The environment of modern warfare is deteriorating day by day, which puts forward higher requirements for the safety, reliability and functionality of weapon systems. The in-line explosive foil detonation system breaks through the limitations of sensitive detonating agents and loose explosives in traditional detonators. The transducer element does not directly contact the explosives, and directly detonates insensitive ammunition. It has high safety, high reliability, and mechanical shock resistance. , Anti-radio frequency, static electricity, stray current and electromagnetic interference, etc., it has broad application prospects in weapon systems. [0003] After decades of research in the United States and European powers, the integrated technology has been used to realize the integra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42B3/195
Inventor 李鸿高朱朋郑国强姚艺龙宋泽润
Owner NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
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