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Device for exciting micro-jet with laser and detonator using the device

A jet and laser technology, applied in the direction of detonators, fuze ignition devices, fuze connection casings, etc., can solve the problems of undiscovered micro-jet excitation detonator devices and detonators, and achieve strong anti-electromagnetic interference, accurate delay, and high ignition capacity Effect

Active Publication Date: 2016-03-09
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] No devices and detonators using micro-jet generated by lasers to excite detonators have been found in the prior art

Method used

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  • Device for exciting micro-jet with laser and detonator using the device
  • Device for exciting micro-jet with laser and detonator using the device
  • Device for exciting micro-jet with laser and detonator using the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Laser excitation device for micro-jet

[0030] Dissolve 5 g of the bi-base drug in 50 ml of acetone, and cast the mixed solution on a PET film with a thickness of 80 microns. The wet film thickness is 100 microns. The dry film thickness after drying for 1 hour at 30 degrees Celsius is 10 Micron, a laser-excited micro-jet device is made.

[0031] figure 1 A schematic diagram of the action process of the laser micro-jet device of the present invention is given. Such as figure 1 Shown in: Optical fiber 1 conducts the laser light emitted by the laser source, the wavelength of the laser light emitted by the laser source is 1064nm, and the power is 1W. The thickness of the PET substrate 2 is 80 microns, and the light transmittance is 90%. The thickness of the double-base drug film 3 is 10 microns. The micro jet 4 is produced under the action of the laser.

[0032] Using a vacuum torsion pendulum to test the laser energy utilization rate of the micro-jet under this con...

Embodiment 2

[0036] Example 2: Laser-excited micro-jet device 2

[0037] Dissolve 3 grams of bi-base drug and 2 grams of polyglycidyl azide in 50 ml of a mixture of ether and ethanol with a volume ratio of 7:3, and cast the mixed solution on a polyimide film with a thickness of 50 microns Above, the wet film thickness is 6000 micrometers, and the dry film thickness after drying for 10 hours at 90 degrees Celsius is 2000 micrometers, and a laser-excited microjet device is produced. The laser beam emitted by the laser source has a wavelength of 940nm and a power of 5W.

[0038] Using a vacuum torsion pendulum to test the laser energy utilization rate of the micro-jet under this condition can exceed 300%, that is, 1J of laser energy acting on the micro-jet generating device can generate a micro-jet with an energy of 3J, and the single pulse can be improved after using this equipment Laser energy.

[0039] The energetic polymer used in the laser-excited microjet device in this embodiment can also b...

Embodiment 3

[0041] Example 3: Using laser to excite the detonator of the micro-jet device

[0042] In this embodiment, a detonator made by the above-mentioned laser-excited polymer on the back of a transparent substrate to generate a micro-sputtering flow is used. image 3 A schematic diagram of the structure of the detonator using the laser microjet device of the present invention is given. Combine below image 3 To illustrate the manufacturing process of the detonator in this embodiment.

[0043] The iron shell of the detonator used in making the detonator of this embodiment has an outer diameter of 7 microns and an inner diameter of 6.2 mm; a charge of 8 black gold is added to the iron shell 9 with a charge of 0.4 g and a density of 1.4 g / cm 3 , And then add the secondary charge of 7 Roxy Gold, the charge is 0.3 g, the density of the press is 1g / cm 3 , And then add three charges of 6 RDX, the charge is 0.3 grams, and the charge density is 0.9g / cm 3 ; Press into the rubber ferrule 5 with a ...

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Abstract

The invention discloses a device for generating a micro spray jet by using a laser to stimulate a polymer on the back side of a transparent substrate, and a detonator fabricated by using the device. The device is characterized in that the micro spray jet device is of a dual-layer structure formed by the transparent substrate and a high-molecular polymer material on the surface of the substrate; the high-molecular polymer is an energetic polymer with viscosity, and cemented together with the transparent substrate by the viscosity of the high-molecular polymer; a high-temperature and high-pressure gas generated by laser radiating an energetic material at the back side of the transparent substrate detonates the detonator to charge, and can stimulate the detonator to charge, so as to finish detonating. The device has the advantages of low laser power required for detonation, good prompt reactivity, accurate delay, good safety and simple structure, and can be applied to high-temperature, high-pressure and high-overload environments for aerospace, deep well detonation and the like; the charge density of the detonator is increased.

Description

Technical field [0001] The invention belongs to the technical field of explosive initiation equipment, and particularly relates to a device for laser excitation of energetic polymer on the back of a transparent substrate to form a microjet and a detonator made by using the device. Background technique [0002] According to the book "Pyrotechnics Technology" published by Beijing Institute of Technology Press in 2007, detonators are widely used in military, high-tech fields and civil engineering as the detonator of insensitive explosives. The detonators currently in use all use composite charge technology. The typical structure is to use relatively insensitive high-power explosives as secondary charges, sensitive detonators as the main charges, and multiple ignition devices as the primary ignition energy. . First the detonator is detonated, and then the detonator detonates the explosive. All detonators are sensitive to various primary ignition energy sources, such as heat, electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06C5/06C06C7/00
Inventor 马宏昊曲忠伟焦龙沈兆武林谋金
Owner UNIV OF SCI & TECH OF CHINA
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