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High polymer bonded explosive with heat conducting network and preparation method thereof

A technology for high polymer binders and explosives, which is applied in the directions of explosives, non-explosive/non-thermal agent components, non-explosive fillers/gelling agents/thickeners, etc. The effect is not obvious and other problems, to achieve the effect of stable quality, low production cost and simple process steps

Active Publication Date: 2022-01-28
葛洲坝易普力广西威奇化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Judging from the current preparation methods and processes of PBX explosives, explosive crystals exist in the form of solid particles, and their shape, size and structure do not change during the preparation process, and the polymer binder and thermally conductive filler only change on the surface property or coating, and because the content of the two is small, the modification effect on explosive crystals is not obvious

Method used

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  • High polymer bonded explosive with heat conducting network and preparation method thereof

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Effect test

Embodiment 1

[0029] A high polymer bonded explosive with a heat conduction network, comprising the following raw materials in parts by weight: explosive (CL-20) 70g, high polymer binder (fluoro rubber F2311) 30g, sodium lauryl sulfate 2.5g , cetyltrimethylammonium bromide 0.5g, thermally conductive filler (graphene) 0.5g, ethyl acetate 1400g, deionized water 700g;

[0030] The preparation method of the described polymer bonded explosive with heat conduction network is:

[0031] Step 1. Put CL-20 and fluororubber in 1400g of ethyl acetate and stir for 8 hours to make it a uniform and stable solution. Add 700g of deionized water, add sodium lauryl sulfate, and use an emulsifier to emulsify with high-speed shear (shear The cutting speed is 10m / s, the emulsification time is 5min), and the CL-20 / fluorine rubber microemulsion with negative charge on the surface is obtained;

[0032] Step 2, cetyltrimethylammonium bromide is added in 50g water, then graphene is added, ultrasonic dispersion 24h (...

Embodiment 2

[0042] A high polymer bonded explosive with a heat conduction network, comprising the following raw materials in parts by weight: explosive (RDX) 98g, high polymer binder (fluororesin F2314) 2g, sodium dodecylbenzenesulfonate 3g, Octadecyldimethylbenzyl quaternary ammonium chloride 2g, thermally conductive filler (graphite nanosheet + carbon nanotube, mass ratio 1:1) 1g, acetone 500g, deionized water 500g;

[0043] The preparation method of the described polymer bonded explosive with heat conduction network is:

[0044] Step 1, RDX and fluororesin are placed in 500g acetone and stirred for 8h to make it become a uniform and stable solution, add 500g deionized water, add sodium dodecylbenzenesulfonate, and emulsify with emulsifier high speed shear (shear speed is 10m / s, and the emulsification time is 5min), the RDX / fluororesin emulsion with negative charge on the surface is obtained;

[0045] Step 2. Add octadecyldimethylbenzyl quaternary ammonium chloride to 100g of water, th...

Embodiment 3

[0049] A high polymer bonded explosive with a heat conduction network, comprising the following raw materials in parts by weight: explosive (HMX) 70g, polymer binder (styrene-acrylonitrile copolymer) 30g, sodium dodecylsulfonate 10g, cetyltrimethylammonium bromide 2g, thermally conductive filler (fullerene + boron nitride nanosheet, mass ratio 1:1) 2g, (dimethylsulfoxide + dimethylformamide, mass ratio 1:1 ) 2000g, deionized water 1400g;

[0050] The preparation method of the described polymer bonded explosive with heat conduction network is:

[0051] Step 1. Put HMX and styrene-acrylonitrile copolymer in 2000g (dimethyl sulfoxide + dimethylformamide) mixed solvent and stir for 8 hours to make it a uniform and stable solution. Add 1400g deionized water and dodecane Sodium sulfonate, and high-speed shear emulsification with an emulsifier (shear speed is 10m / s, emulsification time is 5min); obtain the HMX / styrene-acrylonitrile copolymer emulsion with negative charge on the surf...

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Abstract

The invention discloses a high polymer bonded explosive with a heat conduction network and a preparation method thereof, comprising: adding the explosive and a high polymer binder into an organic solvent, adding water and an anion (cation) surfactant, and high-speed Shear emulsification to obtain explosive / polymer binder emulsion; select cationic (anion) ionic surfactants to treat thermally conductive fillers, add positively (negatively) charged thermally conductive filler dispersions on the surface to oppositely charged explosives / In the polymer binder emulsion, under the electrostatic interaction of positive and negative charges, self-assembly forms explosive / polymer binder-thermally conductive filler emulsion; the explosive / polymer binder-thermally conductive filler emulsion is broken Emulsion and drying treatment to obtain explosive / polymer binder-thermally conductive filler core-shell structure; thermally conductive filler gathers on the surface of explosive / polymer binder latex particles to form a thermally conductive network in the PBX explosive. The method has low cost, high efficiency, easy industrialization and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of energy-containing chemical industry, and in particular relates to a high polymer bonded explosive with a heat conduction network and a preparation method thereof. Background technique [0002] During the storage and transportation of explosives, explosives are undergoing their own thermal decomposition, and the accumulation of heat will reduce the safety of explosives and even cause major accidents. In order to improve the safety of explosives and reduce heat accumulation, it is necessary to improve the heat dissipation capacity of explosives. Generally speaking, the thermal conductivity of explosives is relatively low, which limits the ability of explosives to dissipate heat during heat accumulation. In order to overcome this problem, it is an effective method to dope explosives with high thermal conductivity fillers to improve their thermal conductivity. Polymer bonded explosives (PBX) are composed of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B25/34C06B25/40C06B23/00
CPCC06B25/40C06B25/34C06B23/001
Inventor 杨文彬杨学林刘旭邓浩何方方李永升唐小红杨志剑
Owner 葛洲坝易普力广西威奇化工有限责任公司