Low-cost high-safety polymer-bonded explosive (PBX) and preparation method thereof

A high-safety, low-cost technology, applied in offensive equipment, explosives processing equipment, explosives, etc., can solve the problems of poor internal quality of the charge, inability to meet the requirements of high-performance warheads and the charge index of civilian blasting devices, etc. Good formability, good safety performance and mechanical strength, the effect of improving safety

Inactive Publication Date: 2019-10-18
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] DNAN is a low-melting point and safe single-substance explosive that has been widely used in China in recent years. It is widely used in melting and casting PBX liquid phase carriers, but the casting method is adopted, and the internal quality of the charge is poor, which cannot meet high performance requirements. Charge Index Requirements for Warheads and Civil Explosive Devices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A low-cost and high-safety PBX, including the following raw materials in parts by weight: 40 parts of DNAN, 6 parts of NQ, 46.5 parts of Al powder, 2.5 parts of PVB, 0.5 parts of paraffin, and 0.5 parts of graphite.

[0031] The present invention also provides the preparation method of the above-mentioned low-cost and high-safety PBX, comprising the following steps:

[0032] Step 1: Raw material preparation

[0033] Pre-mixing of the first stage: 40 parts of DNAN, 6 parts of NQ, 2.5 parts of PVB, 0.5 parts of paraffin, 0.5 parts of graphite and 4 parts of absolute ethanol are pre-mixed and set aside;

[0034] The second stage of material premixing: premix 46.5 parts of Al powder and 12 parts of absolute ethanol, and set aside;

[0035] Step 2: Blending

[0036] Put the first stage of the pre-mixed material in step 1: put 40 parts of DNAN, 6 parts of NQ, 2.5 parts of PVB, 0.5 parts of paraffin, 0.5 parts of graphite and 4 parts of absolute ethanol into a kneader for mi...

Embodiment 2

[0044] A low-cost and high-safety PBX, comprising the following raw materials in parts by weight: 40 parts of DNAN, 10 parts of NQ, 50.5 parts of Al powder, 2.5 parts of PVB, 0.5 parts of paraffin, and 0.5 parts of graphite.

[0045] The present invention also provides the preparation method of the above-mentioned low-cost and high-safety PBX, comprising the following steps:

[0046] Step 1: Raw material preparation

[0047] Pre-mixing of the first stage: 40 parts of DNAN, 10 parts of NQ, 2.5 parts of PVB, 0.5 parts of paraffin, 0.5 parts of graphite and 4 parts of absolute ethanol are pre-mixed and set aside;

[0048] The second stage of material pre-mixing: 50.5 parts of Al powder and 12 parts of absolute ethanol are pre-mixed and set aside;

[0049] Step 2: Blending

[0050] Put the first section of material pre-mixed in step 1: put 40 parts of DNAN, 10 parts of NQ, 2.5 parts of PVB, 0.5 parts of paraffin, 0.5 parts of graphite and 4 parts of absolute ethanol into a knead...

Embodiment 3

[0058] A low-cost and high-safety PBX, including the following raw materials in parts by weight: 40 parts of DNAN, 9 parts of NQ, 48 parts of Al powder, 2.5 parts of PVB, 0.5 parts of paraffin, and 0.5 parts of graphite.

[0059] The present invention also provides the preparation method of the above-mentioned low-cost and high-safety PBX, comprising the following steps:

[0060] Step 1: Raw material preparation

[0061] Pre-mixing of the first stage: 40 parts of DNAN, 9 parts of NQ, 2.5 parts of PVB, 0.5 parts of paraffin, 0.5 parts of graphite and 4 parts of absolute ethanol are pre-mixed and set aside;

[0062] The second stage of material pre-mixing: 48 parts of Al powder and 12 parts of absolute ethanol are pre-mixed and set aside;

[0063] Step 2: Blending

[0064] Take a kneader with a volume of 5L, and put the first stage of the pre-mixed material in step 1: 40 parts of DNAN, 9 parts of NQ, 2.5 parts of PVB, 0.5 parts of paraffin, 0.5 parts of graphite and 4 parts of a...

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Abstract

The invention discloses a low-cost high-safety polymer-bonded explosive (PBX), and relates to the technical field of energetic materials. The PBX comprises the following raw materials in parts by weight: 40 parts of a main explosive, 6-10 parts of an insensitive explosive, 46.5-50.5 parts of high-energy metal, 2.5 parts of a binder, 0.5 part of a first insensitive agent and 0.5 part of a second insensitive agent. The high-safety PBX based on DNAN has good safety performance and mechanical strength, and meanwhile the sensitivity to initiation is low.

Description

technical field [0001] The invention relates to the technical field of energetic materials, in particular to a low-cost and high-safety PBX and a preparation method thereof. Background technique [0002] PBX is a type of mixed explosive consisting of a simple explosive and a bonded system. The current common types include pressing, thermosetting and melting casting. It is widely used in various warhead charges and industrial blasting at home and abroad. PBX, as the release source of damage capability of warheads and industrial blasting devices, directly affects the safety performance of the entire damage system. Improving the safety performance of PBX is one of the most effective means to reduce safety accidents. [0003] Common safe and relatively mature single-substance explosives include TNT and TATB. However, TNT is mostly used in casting and molding methods. The charge has defects such as shrinkage cavities and cracks, which cannot meet the quality requirements of high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/10C06B21/00
CPCC06B21/0025C06B21/0066C06B33/10
Inventor 殷明罗观史远通汤滢丁峰黄天一
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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