Integrated membrane bridge igniter and preparation method thereof

Abstract

The invention discloses an integrated thin film bridge igniter and a preparation method thereof. The integrated thin film bridge igniter sequentially comprises a base body overall element, a transition layer thin film, an ignition layer thin film and a composite bridge film layer from bottom to top. The preparation method comprises the steps that (1), the transition layer thin film and the ignition layer thin film are sequentially deposited on the surface of the base body overall element; (2), a zigzag thin film bridge area is etched on the ignition layer thin film through a laser etching process; and (3), a CuO thin film layer and an Al thin film layer are periodically and alternately deposited on the zigzag thin film bridge area to obtain the integrated thin film bridge igniter. The integrated thin film bridge igniter is free of packaging and capable of achieving low-energy reliable ignition, ignition energy can be effectively reduced, and ignition time can be effectively shortened; and the preparation method is low in cost, and batch production can be achieved.

Description

technical field [0001] The invention belongs to the technical field of pyrotechnics, and relates to an igniter and a preparation method thereof, in particular to an integrated membrane bridge igniter and a preparation method thereof. Background technique [0002] The safety and reliability of the igniter is the key to the safety and reliability of the entire pyrotechnic system. Although the traditional bridge wire or film bridge igniter can also meet the safety requirements of 1A / 1W, 5min without ignition, due to the need to integrate and package the separate components, the reliability cannot meet the current requirements for the use of pyrotechnics. [0003] The main disadvantages of the prior art of the igniter are: 1. Difficulty in packaging; 2. Poor reliability. The reason why the existing technology cannot solve these shortcomings is that the traditional packaging of the film bridge igniter is to first bond the film bridge with epoxy resin in the groove between the le...

AI Technical Summary

Problems solved by technology

Although the traditional bridge wire or thin film bridge igniter can also meet the safety requirements of 1A / 1W, 5min without ignition, but due to the need to integrate and package the separate components, the reliability cannot meet the current requirements for the use of pyrotechnics

[0003] The main disadvantages of the prior art of the igniter are: 1. difficulty in encapsulation; 2. poor reliability

It can be seen that although this patent document is a preparation method for leadless packaging, the reliability of igniters with traditional leaded packaging is greatly improved, but it is still integrated and packaged with separate components, which inevitably has complicated processes and procedures. Redundancy, low consistency, etc., and poor reliability

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