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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 solve the problem that the current low-detonation-velocity explosive is mainly realized by reducing the density of the explosive, and obtain a high-density and low-detonation-velocity explosive

Method used

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

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Effect test

Embodiment 1

[0031] The composition of the high-density low-detonation velocity explosive is: 14kg RDX (7kg of which has a particle size of 0.250mm-0.420mm, and the other 7kg has a particle size of ≤0.05mm), 65kg of barium nitrate with a particle size of 0.010mm-0.025mm, 15kg binder pentaerythritol acrolein resin, 4kg plasticizer diisooctyl sebacate and 0.7kg curing agent diethyl sulfate, its preparation process is: first adopt batch feeding and kneading mode to carry out mixing, kneading The equipment is a kneader. Knead 15kg of pentaerythritol acrolein resin and 4kg of di-octyl sebacate at 65°C for 10 minutes to obtain product I, then stop the machine to clean up the kneader blades and materials at dead ends, and then mix product I with 7kg of pellets RDX with a diameter of 0.250mm to 0.420mm was kneaded at 70°C for 8 minutes to obtain product II, and the kneader was shut down to clean up the kneader blades and materials at dead ends. Knead twice at ℃ for 12 minutes each time. After each...

Embodiment 2

[0035] The composition of the high-density low-detonation velocity explosive is: 16kg of RDX (7kg of which has a particle size of 0.250mm-0.420mm, and another 9kg of which has a particle size of ≤0.05mm), 64kg of barium nitrate with a particle size of 0.010mm-0.025mm, 16kg binder pentaerythritol acrolein resin, 5kg plasticizer diethyl phthalate and 0.6kg curing agent benzene methanesulfonic acid, its preparation process is: first adopt batch feeding and kneading mode to carry out mixing, kneading The equipment is a kneader. Knead 16kg of pentaerythritol acrolein resin and 5kg of diethyl phthalate at 70°C for 8 minutes to obtain the product I, and then mix the product I with 7kg of Hexogen with a particle size of 0.250mm to 0.420mm Kneading at 65°C for 10 minutes to obtain product II, then kneading product II with 9kg of Hexogen with a particle size of ≤0.05mm at 70°C twice for 10 minutes each time to obtain product III, and finally mixing product III with 0.6kg of benzidine Su...

Embodiment 3

[0037]The composition of the high-density low-detonation-velocity explosive is: 15kg RDX (8.25kg of which has a particle size of 0.250mm to 0.420mm, and the other 6.75kg has a particle size of ≤0.05mm), 66kg of nitric acid with a particle size of 0.010mm to 0.025mm Barium, 15.5kg binder pentaerythritol acrolein resin, 4.5kg plasticizer diethyl phthalate and 0.5kg curing agent benzene methanesulfonic acid, its preparation process is: first adopt batch feeding and kneading mode to mix The kneading equipment 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 mix product I with 8.25kg of particle size of 0.250mm~ 0.420mm RDX was kneaded at 70°C for 8 minutes to obtain product II, then product II was kneaded with 6.75kg RDX at 66°C twice for 8 minutes each time to obtain product III, and finally Knead product III and 0.5kg benzene methanesulfonic acid twice at 65°C for 9 minutes each time t...

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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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