Plasma enhancement type microchip exploding foil initiator and preparation method

Abstract

The invention relates to the technical field of minitype low-energy ignition and initiation, in particular to a plasma enhancement type microchip exploding foil initiator and a preparation method. Theinitiator comprises a substrate, a metal / low-melting-point polymer film layer, a tensile polymer flyer layer, an accelerating chamber and a reagent, wherein the metal / low-melting-point polymer film layer includes a metal layer and a low-melting-point polymer layer; the mental layer is arranged on the substrate and includes a bonding pad, a transition zone and bridge foils; and the low-melting-point polymer layer is arranged on the metal layer. The tensile polymer flyer layer is arranged on the metal / low-melting-point polymer film layer. According to the plasma enhancement type microchip exploding foil initiator and the preparation method, by using the metal / polymer layer, polymers can be activated to generate a large amount of steam and plasmas on the basis of an electric explosion of thebridge foils, and the capacities of the bridge foils to shear and drive the flyer are enhanced, and the ignition energy of an McEFI is reduced; adopting a micro-electromechanical system technology toprepare the microchip exploding foil initiator can realize mass production and reduce the preparation cost, and the obtained initiator has a high integration level and a small size.

Description

technical field [0001] The invention relates to the technical field of miniature low-energy ignition and detonation, in particular to a plasma-enhanced microchip explosion foil detonator and a preparation method. Background technique [0002] Low-energy ignition and detonation is the development trend of ignition and detonation in weapon systems. [0003] Exploding foil initiator (Exploding Foil Initiator, EFI) is also called shock foil detonator. It is usually composed of substrate, explosive bridge foil, flyer layer, accelerating chamber and agent. It is an extremely safe and reliable ignition and detonation device. Traditional For EFI, each component is manually aligned and installed, resulting in low precision and high manufacturing cost. Using Micro Electro Mechanical System (MEMS) technology, integrated batch preparation of McEFI has become a new research trend. [0004] However, the ignition (ignition or detonation) energy of the current McEFI is relatively high, and...

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Problems solved by technology

[0003] Exploding foil initiator (Exploding Foil Initiator, EFI) is also called shock foil detonator. It is usually composed of substrate, explosive bridge foil, flyer layer, accelerating chamber and agent. It is an extremely safe and reliable ignition and detonation device. Traditional EFI, each component is manually aligned and installed, resulting in low precision and high manufacturing cost. Using Micro Electro Mechanical System (MEMS) technology, integrated batch preparation of McEFI has become a new research trend

[0004] However, the ignition (ignition or detonation) energy of the current McEFI is relatively high, and the energy provided by the weapon system (such as solid rocket motor or missile fuze, etc.) is extremely limited, so how to reduce the ignition energy of McEFI, based on McEFI Preparation of Low Energy Exploding Foil Initiator (LEEFI) has become a current and future research hotspot

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