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High-gurney-energy low-vulnerability PBX explosive and preparation method thereof

A technology of fragility and explosives, applied in the field of high Gurney energy and low fragility PBX explosives and its preparation, can solve the problems of difficulty in improving the safety performance of explosives, high sensitivity, poor safety performance, etc., and achieve high efficiency The effects of damage safety, high safety, and excellent casting rheological properties

Active Publication Date: 2013-06-12
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

[0004] Metal-accelerated explosives are generally required to be high Gurney energy explosives. This type of explosive has high detonation velocity and high detonation pressure. It is required that the explosive formula has high-severity materials with high component content and less inert materials. However, high-severity explosives Materials generally have high sensitivity and poor safety performance, and it is difficult to improve the safety performance of explosives with less inert materials

Method used

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  • High-gurney-energy low-vulnerability PBX explosive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The high Gurney energy low fragility PBX explosive consists of the following components by weight:

[0039] HMX, 90 parts; wherein the particle size distribution of HMX particles is as follows: Coarse particle HMX: the particle size range is 0.125-0.60mm, accounting for 65-75% of the total HMX content, and the particle size range is 0.25-0.60mm. Less than 60% of the coarse particle content; fine particle HMX: particle size ≤0.05mm, accounting for 25-35% of the total HMX content, of which the particle size ≤0.045mm content is not less than 97% of the fine particle content.

[0040] Binder: HTPB, 4.3 parts;

[0041] Desensitizer: WAX, 2.74 parts;

[0042] Plasticizer: DOS, 2.5 parts;

[0043] Curing agent: TDI, 0.46 parts.

[0044] The preparation method of high Gurney energy low fragility PBX explosive is as follows:

[0045] (1) Ingredients: weighed according to the above parts by weight.

[0046] (2) Material mixing:

[0047]The first batch of feeding and kneadin...

Embodiment 2

[0064] The high Gurney energy low fragility PBX explosive consists of the following components by weight:

[0065] HMX, 90 parts, wherein the particle size distribution of HMX particles is as follows: coarse particle HMX: the particle size range is 0.125-0.60mm, accounting for 65-75% of the total HMX content, and the particle size range is 0.25-0.60mm. Less than 60% of the coarse particle content; fine particle HMX: particle size ≤ 0.05mm, accounting for 25-35% of the total HMX content, of which the particle size ≤ 0.045mm content is not less than 97% of the fine particle content;

[0066] Binder: HTPB, 4.5 parts;

[0067] Desensitizer: WAX, 2.7 parts;

[0068] Plasticizer: DOS, 2.3 parts;

[0069] Curing agent: TDI, 0.5 parts.

[0070] The preparation method of the high Gurney energy and low fragility PBX explosive of this embodiment is the same as that of embodiment 1.

Embodiment 3

[0072] The high Gurney energy low fragility PBX explosive consists of the following components by weight:

[0073] HMX, 90 parts; wherein the particle size distribution of HMX particles is as follows: coarse particle HMX: the particle size range is 0.125-0.60mm, accounting for 65-75% of the total HMX content, and the particle size range is 0.25-0.60mm. Less than 60% of the coarse particle content; fine particle HMX: particle size ≤ 0.05mm, accounting for 25-35% of the total HMX content, of which the particle size ≤ 0.045mm content is not less than 97% of the fine particle content;

[0074] Binder: HTPB, 4.5 parts;

[0075] Desensitizer: WAX, 3 parts;

[0076] Plasticizer: DOS, 2 parts;

[0077] Curing agent: TDI, 0.5 parts.

[0078] The preparation method of the high Gurney energy and low fragility PBX explosive of this embodiment is the same as that of embodiment 1.

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Abstract

The invention discloses a high-gurney-energy low-vulnerability PBX explosive and a preparation method thereof. The PBX explosive comprises ingredients in parts by weight: 90 parts of HMX, 4-4.5 parts of bonding agent, 2-3 parts of insensitiveness agent, 2-2.5 parts of plasticizer, and 0.4-0.5 parts of curing agent. The preparation method of the PBX explosive comprises the following steps: preparing materials; material mixing: performing material mixing by adopting batch-feeding and kneading mode; performing vacuum processing and vacuum pouring; and heating and curing. The PBX explosive has more than 90% of solid content, and is excellent in cast rheological property; the gurney coefficient of the explosive, tested by the standard cylinder experiments, can achieve 2.83km / s, and the explosive has high safety.

Description

technical field [0001] The invention belongs to the field of energetic materials for military use, and in particular relates to a high Gurney energy and low fragility PBX explosive and a preparation method thereof, which has good application prospects in warhead charges such as fragments, jets, and EFP. Background technique [0002] Metal-accelerated explosives are widely used in warheads such as fragments, jets, and explosively formed projectiles (EFP), which have strong strike capabilities against targets in the air, ground, and ships. With the development of modern military technology, warheads used for anti-aircraft, anti-missile, and anti-ship require high-efficiency damage effects. At the same time, their airborne and ship-borne launch platforms are increasingly modern and expensive. Safety and other comprehensive performance put forward higher requirements. [0003] At present, the existing metal-accelerated explosives in my country are mainly TNT-based high-solid me...

Claims

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Application Information

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IPC IPC(8): C06B25/34C06B23/00C06B21/00
Inventor 罗观殷明汤滢郑保辉刘绪望吴奎先于海江
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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