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High-energy mixed explosive containing titanium powder and preparation method of high-energy mixed explosive

A technology of mixing explosives and titanium powder, which is applied in the field of high-energy explosives and explosives. It can solve the problems of large particle size, low reactivity and poor uniformity of titanium sponge powder, and achieve good thermal stability, mature production technology and improved explosive performance.

Inactive Publication Date: 2017-05-10
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this invention has the following disadvantages: titanium sponge powder is an intermediate product for manufacturing high-purity ultrafine titanium powder. Compared with titanium powder, titanium sponge powder has high toughness, large particle size and poor uniformity, and its advantages as an energetic additive are not as good as titanium powder; The sponge titanium powder in this patent is mixed with other components of ammonium oil explosives at a temperature of 90-110°C, and the surface of the sponge titanium powder particles will react with oxygen to form titanium dioxide, thereby reducing the reactivity of the sponge titanium powder

Method used

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  • High-energy mixed explosive containing titanium powder and preparation method of high-energy mixed explosive

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Emulsion explosive containing titanium powder: in the mixed explosive, the mass ratio of titanium powder is 10%, the mass ratio of polymethyl methacrylate is 3%, and the mass ratio of emulsion explosive is 87%. The formulation of the emulsion explosive is shown in Table 1. Add the coated titanium powder into the emulsified matrix, heat to 60°C, and then stir and mix evenly.

[0028] Using the detonation velocity and jerk test, the detonation performance of emulsion explosives containing titanium powder and no titanium powder was tested. In the jerk test, the mass of the two emulsion explosive samples was 50g; A sample of the emulsion explosive is packed into a PVC pipe with a diameter of 40 mm and a length of 300 mm. Several probes are buried on the PVC pipe, and the detonation velocity of the explosive is measured by a detonation velocity meter (on-off method). The experimental results are shown in Table 2. It can be seen from Table 2 that titanium powder can signific...

Embodiment 2

[0037] TNT explosive containing titanium powder: the mass ratio of titanium powder is 15%, the mass ratio of paraffin wax is 8%, and the mass ratio of TNT is 77%. The coated titanium powder is added to the TNT explosive, heated to 80°C, stirred and mixed evenly, and then the explosive sample is pressed into a columnar charge using a grinding tool and a hydraulic press.

[0038] In the air explosion experiment, the detonation performance of TNT explosives containing titanium powder and titanium powder-free was tested. In the experiment, the mass of the two explosive samples was 10g, and the distance between the explosive sample and the pressure sensor was 70cm. The signal was recorded by a digital oscilloscope . The experimental results are shown in Table 3. It can be seen from Table 3 that after adding titanium powder, the air explosion shock wave specific impulse of TNT explosive increased by 22.9%, and the energy density increased by 16.3%.

[0039] The preparation method o...

Embodiment 3

[0045]RDX explosive containing titanium powder: in the mixed explosive, the mass ratio of titanium powder is 20%, the mass ratio of stearic acid is 5%, and the mass ratio of RDX is 75%. The coated titanium powder is added to the RDX explosive, heated to 65°C, stirred and mixed evenly, and then the explosive sample is pressed into a column charge by using a grinding tool and a hydraulic press.

[0046] Using underwater explosion experiments, the detonation performance of RDX explosives containing titanium powder and titanium powder-free was tested. In the experiment, the mass of the two explosive samples was 10g, and the distance between the explosive sample and the pressure sensor was 120cm , using a digital oscilloscope to record the signal. The experimental results are shown in Table 4. It can be seen from Table 4 that after adding titanium powder, the underwater explosion bubble energy of the RDX explosive increased by 21.2%, and the total energy was 16.8%.

[0047] The pr...

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Abstract

The invention discloses an explosive, and particularly relates to a high-energy mixed explosive containing metal, in particular to a high-energy mixed explosive prepared by using titanium powder as an additive and a preparation method of the high-energy mixed explosive. The high-energy mixed explosive is prepared from the following components in parts by weight: 10 to 25 parts of titanium powder, 2 to 8 parts of coating agent and 72 to 82 parts of matrix explosive. The thermal stability of titanium is good, the melting point of the titanium is 1660+ / -10 DEG C, and the boiling point of the titanium is 3287 DEG C. Metallic titanium has excessively-strong reducing capacity in a high-temperature environment, can be chemically combined with oxygen, carbon, nitrogen and other multiple elements, and also can strip oxygen from partial metal oxides (such as aluminum oxide). Explosive detonation is a superhigh-temperature and high-pressure process, while coated titanium powder is high-energy fuel, mainly participates in a combustion reaction after a C-J surface in the explosive detonation process, generates a secondary reaction with a detonation product to release a large amount of heat, can provide subsequent energy for shock wave and delays the attenuation of the impact wave, so that the explosion performance of the explosive is remarkably improved.

Description

technical field [0001] The invention relates to an explosive, more specifically a metal-containing high-energy explosive, in particular to a high-energy mixed explosive prepared by using titanium powder as an additive and a preparation method thereof. Background technique [0002] At present, most of the explosives used in weapons and equipment in the world are mixed explosives, which make up for the shortcomings of simple explosives in terms of variety, molding process, raw material source and cost, and have greater selectivity and adaptability. The characteristics of high-efficiency damage in future wars require the energy density of ammunition to be increased. The metallization of explosives is an effective method to improve the working ability of explosives, and aluminum powder is the most commonly used additive in explosives. Aluminum-containing explosives have the advantages of high detonation heat and strong working ability, and are widely used in the military field....

Claims

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Application Information

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IPC IPC(8): C06B33/02C06B33/04C06B33/10C06B23/00C06B21/00
CPCC06B33/02C06B21/0083C06B23/009C06B33/04C06B33/10
Inventor 程扬帆刘文近龚悦汤有富程尧
Owner ANHUI UNIV OF SCI & TECH
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