High-density low-detonation velocity explosive and preparation method thereof

A low-explosive, high-density technology, applied in explosives and other directions, can solve problems such as reducing the density of explosives, and achieve the effects of excellent comprehensive performance, high density and good environmental adaptability

Active Publication Date: 2014-09-17
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

[0004] The present invention overcomes the deficiencies of the prior art, provides a high-density low-detonation velocity explosive and an embodiment of the preparation method thereof, to so

Method used

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  • High-density low-detonation velocity explosive and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0030] Example 1

[0031] The composition of the high-density and low-speed explosive is: 14kg of hexogen (7kg with a particle size of 0.250mm~0.420mm, and 7kg with a particle size of ≤0.05mm), 65kg of barium nitrate with a particle size of 0.010mm~0.025mm, 15kg of binder pentaerythritol acrolein resin, 4kg of plasticizer diisooctyl sebacate and 0.7kg of curing agent diethyl sulfate. The preparation process is as follows: first batch feeding and kneading are used for mixing and kneading The equipment is a kneader. 15kg of pentaerythritol acrolein resin and 4kg of diisooctyl sebacate are kneaded at 65°C for 10 minutes to obtain product I. Then stop the machine to clean the kneader blades and dead corner materials, and then combine product I with 7kg pellets. Roxygen with a diameter of 0.250mm~0.420mm was kneaded at 70°C for 8 minutes to obtain product II. Shut down and clean the kneader blades and dead corner materials, and then combine the product II and 7kg of Roxygen with a par...

Example Embodiment

[0034] Example 2

[0035] The composition of the high-density low-explosive explosive is: 16kg hexogen (7kg particle size is 0.250mm~0.420mm, and 9kg particle size≤0.05mm), 64kg barium nitrate with particle size 0.010mm~0.025mm, 16kg of binder pentaerythritol acrolein resin, 5kg of plasticizer diethyl phthalate and 0.6kg of curing agent benzene methanesulfonic acid. The preparation process is as follows: first batch feeding and kneading are used for mixing. The equipment is a kneader. 16kg of pentaerythritol acrolein resin and 5kg of diethyl phthalate are kneaded at 70°C for 8 minutes to obtain product I. Then, product I is mixed with 7kg of RDX with a particle size of 0.250mm~0.420mm. Kneaded at 65°C for 10 minutes to obtain product II, and then kneaded product II and 9kg of Roxygen with a particle size ≤0.05mm at 70°C twice for 10 minutes to obtain product III. Finally, product III was mixed with 0.6kg of benzyl The sulfonic acid was kneaded twice at 70°C for 8 minutes each ti...

Example Embodiment

[0036] Example 3

[0037] The composition of the high-density low-explosive explosive is: 15kg hexogen (the particle size of 8.25kg is 0.250mm~0.420mm, and the particle size of 6.75kg is ≤0.05mm), 66kg nitric acid whose particle size is 0.010mm~0.025mm Barium, 15.5 kg of binder pentaerythritol acrolein resin, 4.5 kg of plasticizer diethyl phthalate and 0.5 kg of curing agent benzene methanesulfonic acid. The preparation process is as follows: first batch feeding and kneading are used for mixing The equipment for kneading is a kneader. Knead 15.5kg of pentaerythritol acrolein resin and 4.5kg of diethyl phthalate at 68°C for 9 minutes to obtain product I, and then combine product I with 8.25kg with a particle size of 0.250mm~ 0.420mm hexogen was kneaded at 70°C for 8 minutes to obtain product II, and then product Ⅱ was kneaded with 6.75kg hexogen with particle size ≤0.05mm at 66°C twice for 8 minutes to obtain product Ⅲ, and finally Knead product III with 0.5kg of benzene methanes...

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Abstract

The invention discloses a high-density low-detonation velocity explosive. The explosive consists of the following components in parts by weight: 14-16 parts of cyclonite, 64-66 parts of barium nitrate, 15-16 parts of binder, 4-5 parts of plasticizer and 0.5-0.7 part of curing agent; and grain composition is carried out on the cyclonite, so that density uniformity is improved. The invention further discloses a preparation method for the explosive, wherein the preparation method comprises four steps of preparing materials, mixing, treating in vacuum, casting, heating and curing. The explosive disclosed by the invention has higher density, lower detonation velocity, and has good adaptation to environments such as temperature impact, high temperature, high pressure, and the like.

Description

technical field [0001] Embodiments of the present invention relate to the field of dual-use energetic materials, and more specifically, embodiments of the present invention relate to a high-density, low-detonation-velocity explosive and a preparation method thereof. Background technique [0002] In the process of soft rock smooth surface blasting, pre-splitting blasting and stone protective mining blasting, the rock mass to be blasted is required to be cracked according to the predetermined separation surface, and cracks are not allowed to appear on the semicircular blasthole wall remaining on the cracking surface, which is harmful to blasting. The performance of the explosives used imposes certain requirements. Obviously, conventional explosives can no longer meet these requirements. Low detonation velocity explosives are special types of explosives suitable for special blasting techniques. Under open-air blasting operations and certain detonation physical experiment cond...

Claims

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Application Information

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IPC IPC(8): C06B31/12
Inventor 蔡贾林郑申声蒋全萍许多学
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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