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Polymer bonded explosive for missile of common jet hole

A technology for bonding explosives and perforating charges, which is applied to explosives, non-explosive/non-thermal components, nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, etc., can solve the problem of low energy and strength, safety High energy, simple process and low mechanical sensitivity

Inactive Publication Date: 2013-07-17
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-polymer bonded explosives for ordinary perforating bombs produced by some companies at home and abroad contain as much as 98.5% of hexogenin, but the energy and strength are not high due to the low charge density.
"Polymer Bonded Explosives for Ordinary Perforating Bullets" (Patent No. ZL89108047) discloses a polymer bonded explosive for ordinary perforating bullets composed of RDX, butyl acrylate and acrylonitrile copolymer and graphite , although the detonation velocity of the explosive is 8392m / s, but the friction sensitivity is 24%, the safety is not high

Method used

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  • Polymer bonded explosive for missile of common jet hole
  • Polymer bonded explosive for missile of common jet hole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Take materials according to the following components by weight percentage: 98% of RDX, 1.7% of ethylene-vinyl acetate copolymer, and 0.3% of colloidal graphite.

[0018] (2) Preparation

[0019] Add 1960g of Hexogen and 3000ml of water, then add 34g of ethylene-vinyl acetate copolymer emulsion, stir for 10min, heat up to about 60-65℃, add 40g of anhydrous sodium sulfate, stir for 5min, the sodium sulfate dissolves and destroys the emulsion, Precipitate ethylene-vinyl acetate copolymer, add about 300ml of toluene, heat up to 65°C, stir for about 5-10min to form particles. Toluene was distilled off under reduced pressure. Cool to below 40°C and discharge, after filtration, washing, drying and screening, white granules are obtained. In a mixer, mix the white particles with 6g of colloidal graphite evenly to obtain gray-black modeling powder.

[0020] (3) Performance test

[0021] The performance test data is shown in Table 1 below:

[0022] Table 1 performance tes...

Embodiment 2

[0027] The implementation is carried out with reference to the following mass percentage composition: 96.5% of RDX, 3% of ethylene-vinyl acetate copolymer, and 0.5% of graphite.

[0028] The preparation process of this embodiment refers to Example 1, and the performance test results are basically the same, but the detonation velocity is slightly reduced, and the detonation velocity is 8437m / s (1.726g / cm 3 )

Embodiment 3

[0030] The implementation is carried out with reference to the following mass percentage composition: 95% of RDX, 4% of ethylene-vinyl acetate copolymer, and 1% of graphite.

[0031] The preparation process of this embodiment refers to Example 1, and the performance test results are basically the same, but the detonation velocity is slightly reduced, and the detonation velocity is 8353m / s (1.710g / cm 3 )

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Abstract

The invention discloses a polymer bonded explosive for a missile of a common jet hole. The polymer bonded explosive is prepared from the following components by weight percent: 95-98.5% of cyclonite, 1.2-4.0% of ethylene-ethylene vinyl-acetate copolymer and 0.3-1.0% of graphite. The ethylene-ethylene vinyl-acetate copolymer is adopted as a binder; the heat resistance of the ethylene-ethylene vinyl-acetate copolymer is more excellent than that of the cyclonite; the surface is lower than the cyclonite; the ethylene-ethylene vinyl-acetate copolymer has a certain sensitivity reduction effect, ensures good interface interaction and strong binding power of the binder and the cyclonite, enhances the grain strength, and can reduce the dosage of the binder, so as to meet the requirements of powder charge of the common jet hole. The prepared polymer bonded explosive is high in energy (the detonation velocity achieves 8526m / s), low in mechanical sensitivity, and good in heat resistance (non-burning and non-bursting at 150 DEG C for 24 hours), and can meet the requirements of the common jet hole.

Description

technical field [0001] The invention relates to a high polymer bonded explosive for common perforating bullets. The explosive is composed of RDX, binder and desensitizing agent, and is suitable for common perforating bullets for oil and gas wells. Background technique [0002] In order to exploit oil and natural gas, oil and gas well perforation technology must be vigorously developed. The key lies in perforating bullets. Heat-resistant perforating bullets are generally divided into three categories: ordinary perforating bullets, high-temperature perforating bullets and ultra-high-temperature perforating bullets. [0003] At present, the perforating bullets widely used in oil fields are ordinary perforating bullets, which mainly use RDX as the main explosive. In order to increase the penetration depth of the perforating bullets, the content and charge density of RDX must be appropriately increased. The high-polymer bonded explosives for ordinary perforating bombs produced by...

Claims

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Application Information

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IPC IPC(8): C06B25/34C06B23/00
Inventor 刘永刚蒋跃强聂福德刘世俊张建虎
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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