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Low mechanical sensitiveness high-energy composite explosive and preparation method

A technology of mechanical sensitivity and composite explosives, which is applied in the direction of explosives, non-explosive/non-thermal agent components, non-explosive desensitizers/passivators, etc., can solve the problem of reducing the detonation output energy of CL-20 explosives, and achieve a reduction The effect of mechanical sensitivity

Inactive Publication Date: 2018-12-21
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This shows that the use of coating is an effective method to reduce the sensitivity of CL-20 explosives, but because the high polymer binder Estane, graphite, EPDM rubber, fluororesin (FPM), polyurethane (PU), ethylene propylene rubber (EP) It is an inert non-energetic material, and its addition will reduce the detonation output energy of CL-20 explosives; TATB is an insensitive energetic material, but its detonation velocity is 7500rn / s, and its low energy will also reduce the detonation output energy of CL-20 explosives. Boom output energy

Method used

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  • Low mechanical sensitiveness high-energy composite explosive and preparation method
  • Low mechanical sensitiveness high-energy composite explosive and preparation method
  • Low mechanical sensitiveness high-energy composite explosive and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Add 50g of water to the three-neck flask with stirring, then add 5g of NTO explosive solid, the stirring speed is 200r / min, raise the temperature to 80°C until the NTO is completely dissolved, and keep it warm for later use;

[0022] (2) Add 50g of water to the three-necked flask with stirring, control the temperature of the water at 0°C to 5°C, then add 5g of CL-20 explosive solids and 0.02g of polyvinyl alcohol, and the stirring speed is 300r / min to obtain The aqueous suspension of CL-20, and then the NTO aqueous solution obtained in step (1) is slowly added to the aqueous suspension of CL-20, filtered, washed and dried to obtain NTO / CL-20 composite explosive.

Embodiment 2

[0024] (1) Add 75g of water to the there-necked flask with stirring, then add 5g of NTO explosive solid, the stirring speed is 200r / min, heat up to 80°C until the NTO is completely dissolved, and keep warm for later use;

[0025] (2) Add 100g of water to the three-neck flask with stirring, control the temperature of the water at 0°C to 5°C, then add 10g of CL-20 explosive solid and 0.05g of polyvinyl alcohol, and stir at a speed of 300r / min to obtain CL -20 aqueous suspension, then the NTO aqueous solution obtained in step (1) is slowly added to the CL-20 aqueous suspension, filtered, washed and dried to obtain NTO / CL-20 composite explosive.

Embodiment 3

[0027] (1) Add 100g of water to the three-neck flask with stirring, then add 7.5g of NTO explosive solid, the stirring speed is 200r / min, raise the temperature to 80°C until the NTO is completely dissolved, and keep it warm for later use;

[0028] (2) Add 50g of water to the three-neck flask with stirring, control the temperature of the water at 0°C to 5°C, then add 5g of CL-20 explosive solids and 0.03g of polyvinyl alcohol, and the stirring speed is 200r / min to obtain The aqueous suspension of CL-20, and then the NTO aqueous solution obtained in step (1) is slowly added to the aqueous suspension of CL-20, filtered, washed and dried to obtain NTO / CL-20 composite explosive.

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Abstract

The invention discloses a low mechanical sensitiveness high-energy composite explosive which consists of NTO (Nitrogen Tetroxide) and CL-20, wherein the mass ratio of CL-20 to NTO is 1:(0.5-1.5). Thepreparation method comprises the following steps: putting an NTO explosive solid into water, stirring, and increasing the temperature till NTO is completely dissolved so as to obtain an NTO solution;putting the CL-20 explosive solid and a surfactant into water, controlling the temperature to be less than 20 DEG C, stirring so as to obtain a CL-20 water suspension, slowly putting the NTO solutioninto the water suspension of CL-20, filtering, washing, and drying, thereby obtaining the NTO / CL-20 composite explosive. The composite explosive disclosed by the invention has the advantages of beinghigh in density, high in explosion speed, low in mechanical sensitiveness, and the like, the mechanical sensitiveness of CL-20 is effectively degraded, and the security of CL-20 is improved.

Description

technical field [0001] The invention relates to a low-mechanical-sensitivity high-energy composite explosive and a preparation method thereof. The composite explosive is composed of NTO and CL-20 and belongs to the field of energetic materials. Background technique [0002] NTO (chemical name is 3-nitro-1,2,4-triazol-5-one) is a high-energy low-sensitivity single-substance explosive with excellent performance, and its crystal density is 1.93g / cm 3 , the theoretical detonation velocity is 8670m / s; the friction sensitivity is 8% (3.92MPa, 90°swing angle), and the characteristic fall height H 50 It is 102.3cm (5kg drop weight), and the impact sensitivity is 16% (10kg drop weight, 25cm drop height). The energy of NTO is close to that of RDX, it has high thermal stability and chemical stability, and has excellent resistance to X-ray and ultraviolet radiation. It can be used as an insensitive coating agent for sensitive explosives. [0003] CL-20 (chemical name is hexanitrohexaa...

Claims

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Application Information

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IPC IPC(8): C06B25/40C06B23/00
CPCC06B23/005C06B25/40
Inventor 常佩李亚南周诚王彬陈涛
Owner XIAN MODERN CHEM RES INST
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