Adhesive system for improving safety performance of press-packed pbx explosive, preparation method and application thereof

A technology of safety performance and system, applied in the direction of explosives, non-explosive/non-thermal agent components, non-explosive fillers/gelling agents/thickeners, etc., can solve problems such as potential safety hazards, combustion to detonation, etc. Sensitivity, reduction of mass burning rate, and good effect of coating and reduction of sensitivity

Active Publication Date: 2021-09-28
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Claims
  • Application Information

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Problems solved by technology

When the polymer bonded explosive (PBX) is prepared by casting molding technology, although there are inert additives to isolate the coating and absorb heat of the explosive components, which reduces the possibility of the explosive transition from combustion to detonation, but in the pressure In the process of installing PBX, the problem of combustion to detonation is still prone to occur, which poses a great safety hazard

Method used

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  • Adhesive system for improving safety performance of press-packed pbx explosive, preparation method and application thereof
  • Adhesive system for improving safety performance of press-packed pbx explosive, preparation method and application thereof
  • Adhesive system for improving safety performance of press-packed pbx explosive, preparation method and application thereof

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preparation example Construction

[0030] Such as figure 1 Shown, a kind of preparation method of the bonding system that the present invention discloses improves the safety performance of press-packed PBX explosives, comprises the following steps:

[0031] S1, respectively weigh chlorinated rubber, chlorinated paraffin and inert ester plasticizer according to the following mass percentage formula;

[0032] Chlorinated rubber 20%~40%

[0033] Chlorinated paraffin 30%~60%

[0034] Inert ester plasticizer 0% to 30%;

[0035] S2, adding chlorinated rubber into the reaction equipment, dissolving it with ethyl acetate to form a chlorinated rubber solution, the mass ratio of chlorinated rubber to ethyl acetate is 1:5-1:10; the reaction equipment is equipment that can be heated;

[0036] S3, adding chlorinated paraffin and inert ester plasticizer into the chlorinated rubber solution, and stirring at 50-70° C. for 10-30 minutes to obtain a bonding system.

Embodiment 1

[0038] Take by weighing 40g chlorinated rubber, 25g chlorinated paraffin-42 and 35g chlorinated paraffin-52 respectively; Add chlorinated rubber in the reaction equipment, dissolve with ethyl acetate to form chlorinated rubber solution, the mixture of chlorinated rubber and ethyl acetate The mass ratio is 1:10; chlorinated paraffin and inert ester plasticizer are added to the chlorinated rubber solution, and stirred at 70°C for 30 minutes to obtain a bonding system.

[0039] The prepared bonding system contains 40% of chlorinated rubber and 60% of chlorinated paraffin.

Embodiment 2

[0041] Take by weighing 20g chlorinated rubber, 50g chlorinated paraffin-70 and 30g DOS respectively; Add chlorinated rubber in the reaction equipment, dissolve with ethyl acetate to form chlorinated rubber solution, the mass ratio of chlorinated rubber and ethyl acetate is 1 : 5; chlorinated paraffin and inert ester plasticizer were added to the chlorinated rubber solution, and stirred for 10 min at 50° C. to obtain a bonding system.

[0042] The prepared adhesive system contains 20% of chlorinated rubber, 50% of chlorinated paraffin and 30% of inert ester plasticizer.

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Abstract

The invention discloses a bonding system for improving the safety performance of press-packed PBX explosives, which comprises the following components by mass percentage: 20%-40% of chlorinated rubber, 30%-60% of chlorinated paraffin, and an inert ester plasticizer 0% to 30%; the invention also discloses a preparation method and application of the bonding system. The adhesive system disclosed in the present invention forms an adhesive with good flame retardant properties through the compounding of chlorinated paraffin and chlorinated rubber. It can form isolation and uniform coating on the surface of elemental explosive particles, and endothermic thermal decomposition occurs at a high temperature of 120-150 °C, which reduces the mass burning rate of PBX explosive, hinders its combustion to detonation, and significantly reduces its DDT reaction response. Features, improve the thermal safety of press-packed PBX explosives.

Description

technical field [0001] The invention relates to the technical field of military mixed explosives, in particular to a bonding system for improving the safety performance of press-packed PBX explosives, a preparation method and application thereof. Background technique [0002] Combustion-to-detonation (DDT) is a phenomenon that often occurs when various energetic materials, especially explosives, burn; the research on the combustion-to-detonation transition of explosives is not only the need for the design of explosive initiation and transmission sequence, but also related to the production of explosives , Safety issues in the process of transportation and storage are of great significance in the practical application of explosives. Since the combustion-to-detonation performance is a key parameter for the intrinsically safe design of propellant and explosives and the safe use and protection of the whole life cycle, it has always been a key research direction in the field of p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B45/18C06B45/10C06B23/00
CPCC06B23/001C06B23/007C06B45/10C06B45/18
Inventor 王鹏余瑞李忠友赵新岩程迪高扬
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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