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Thermosetting low-vulnerability explosive and preparation method thereof

A technology of thermosetting and explosives, applied in the direction of explosives, non-explosive/non-thermal agent components, offensive equipment, etc., to achieve the effects of good flow and leveling, improved energy performance and low-vulnerability performance, and good low-vulnerability performance

Inactive Publication Date: 2019-01-15
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing technology is that there is a contradiction between energy and low vulnerability performance, and it is impossible to give consideration to both

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A thermosetting low-vulnerability explosive, its formula composition (calculated by mass percentage) is as follows:

[0038] Primary explosive: TKX-50, 43%; d 50 286μm;

[0039] Auxiliary explosives: KDN, 10%, d 50 96μm; FOX-7, 10%, d 50 100μm;

[0040] Fuel: Al (aluminum powder), 25%, d 50 5 μm;

[0041] Binder: HTPB, 4.5%;

[0042] Plasticizer: DOA, 4.5%;

[0043] Curing agent: IPDI, 2.0%;

[0044] Desensitizer: polyparaphenylene and polyaniline doped with graphite, 0.5%; graphene, 0.5%.

[0045] Preparation Process:

[0046] (1) Weigh the components according to the proportion of the formula selected above;

[0047] (2) Put the above components into a vertical mixer for mixing at a mixing temperature of 60°C and a mixing time of 90 minutes to obtain a slurry;

[0048] (3) Vacuum pour the slurry into the mold or warhead, and then put it in an oil bath oven at 60°C to cure for 7 days.

[0049] Performance of the present invention is as follows:

[0050] Pr...

Embodiment 2

[0056] A thermosetting low-vulnerability explosive, its formula composition (calculated by mass percentage) is as follows:

[0057] Primary explosive: TKX-50, 36%, d50 286μm;

[0058] Auxiliary explosives: FOX-7, 10%, d 50 100μm; KDN, 12%, d 50 96μm;

[0059] Fuel: magnesium alloy, 30%, d 50 4μm;

[0060] Binder: HTPE, 5.0%;

[0061] Plasticizer: BuNENA, 4.5%;

[0062] Curing agent: IPDI and N-100, 1.8%;

[0063] Desensitizer: polyaniline doped with graphite, 0.4%; graphene, 0.3%;.

[0064] Preparation Process:

[0065] (1) Weigh the components according to the proportion of the formula selected above;

[0066] (2) Put the above components into a vertical mixer for mixing at a mixing temperature of 50°C and a mixing time of 100 minutes to obtain a slurry;

[0067] (3) Vacuum pour the slurry into the mold or warhead, and then put it in an oil bath oven at 50°C to cure for 8 days.

[0068] Performance of the present invention is as follows:

[0069] Process performan...

Embodiment 3

[0075] A thermosetting low-vulnerability explosive, its formula composition (calculated by mass percentage) is as follows:

[0076] Primary explosive: TKX-50, 35%, d 50 286μm;

[0077] Auxiliary explosives: FOX-7, 17%, d 50 100μm;

[0078] Fuel: boron aluminum alloy, 36%, d 50 5 μm;

[0079] Binder: HTCE, 4.5%;

[0080] Plasticizer: BDNPF / A, 5.5%;

[0081] Curing agent: IPDI and N-100, 1.5%;

[0082] Desensitizing agent: copolymer of acrylamide and acrylate quaternary ammonium salt and polyparaphenylene, 0.5%.

[0083] Preparation Process:

[0084] (1) Weigh the components according to the proportion of the formula selected above;

[0085] (2) Put the above components into a vertical mixer for mixing at a mixing temperature of 60°C and a mixing time of 100 minutes to obtain a slurry;

[0086] (3) Vacuum pour the slurry into the mold or warhead, and then put it in a 70°C oil bath oven to cure for 4 days.

[0087] Explosive performance of the present invention is as f...

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Abstract

The invention relates to a thermosetting low-vulnerability explosive and a preparation method thereof. The thermosetting low-vulnerability explosive comprises the following components: 52%-64% of an explosive; 25%-37% of metal fuel; 4%-9% of a binder; 2%-6% of a plasticizer; 0.5-3% of a curing agent; and 0.1%-1% of a desensitization agent. The thermosetting low-vulnerability explosive provided bythe invention has excellent process performance, good fluidity and levelling properties, a 5h viscosity of less than 500 Pa.s, a yield value of less than 200Pa, a density of greater than 1.8g / cm<3>, adetonation velocity of greater than 7600m / s, explosion heat of greater than 6800kJ / mol, detonation pressure of greater than 22GPa, friction sensitivity of less than 40%, and impact sensitivity of less than 20%; The response levels of fast cook-off test, slow cook-off test and bullet impact test are all combustion, and the results of detonator test and partition plate test are both detonation-free. And the energy performance and low vulnerability of the explosive provided by the invention are both superior to the American PBXN-109 formula.

Description

technical field [0001] The invention relates to a thermosetting low-vulnerability explosive, which belongs to the field of propellant and explosive formula development. Background technique [0002] Since the development of low-vulnerability explosives was proposed in the early 1980s, its related research has been highly valued by countries all over the world, and many new low-vulnerability explosive formulations have been introduced. PBXN-109 is the most representative blasting / fragmentation warhead charge of the U.S. Navy, which is molded by pouring and curing methods. It is used in the Mk-80 series general-purpose bombs, BLU-109 / B penetrating warheads and Penguin anti-ship missiles , The composition is 64% of RDX (Hexogen), 20% of Al (aluminum powder), and 16% of HTPB (hydroxyl-terminated polybutadiene) binder. PBXIH-135 is another typical high-energy insensitive explosive of the U.S. Navy. It is composed of HMX (Octojin), Al, and HTPB. It has passed all EIDS tests and i...

Claims

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Application Information

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IPC IPC(8): C06B27/00C06B23/00
CPCC06B23/00C06B27/00
Inventor 熊伟强曹仕瑾朱雯娟王鹏李忠友张天福张艳赵新岩高扬
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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