Method for coating RDX cyclotrimethylene trinitramine and HMX cyclotetramethylene tetranitramine and coating material thereof
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A coating material and coating technology, applied in the field of applied chemistry, can solve problems such as reducing sensitivity, and achieve the effect of improving performance
Active Publication Date: 2014-03-19
NANJING UNIV OF SCI & TECH
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Problems solved by technology
RDX and HMX coated with non-energetic materials have a certain energy loss, while RDX and HMX coated with energetic materials such as TNT and NTO have a small energy loss, but they still need to be further improved in terms of reducing sensitivity
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Embodiment 1
[0020] Preparation of BHDBTL
[0021] 2,3-Dihydroxymethyl-2,3-dinitro-1,4-butanediol (1mmol, 0.24g), lauric acid (6mmol, 1.2g), dichloromethane 10mL, DCC (5mmol, 1.03 g), DMAP (0.2mmol, 0.024g), stirring at room temperature, followed by TLC, stop the reaction when the reaction of 2,3-dimethylol-2,3-dinitro-1,4-butanediol is complete. 100mL (2×50mL) CHCl 3 For product extraction, collect CHCl 3 phase, concentrated under reduced pressure, and the crude product was recrystallized from methanol and then recrystallized from acetone. The yield was 78.8%.
[0022] Preparation of 3% BHDBTL coated RDX
[0023] Add 5g of RDX to 30mL of acetone, add 0.15g of BHDBTL, stir at 50°C for 0.5h, drop the mixture into rapidly stirring water with a thermos dropper, after the dropwise addition, stir for 5min, filter and dry at 50°C to obtain Modified RDX-3%BHDBTL.
Embodiment 2
[0025] Preparation of 4% BHDBTL-coated RDX
[0026] Add 5g of RDX to 35mL of acetone, add 0.2g of BHDBTL, stir at 50°C for 0.5h, drop the mixture into rapidly stirring water with an insulated dropper, after the dropwise addition, stir for 5min, filter and dry at 50°C to obtain Modified RDX-4%BHDBTL.
Embodiment 3
[0028] Preparation of 5% BHDBTL-coated RDX
[0029] Add 5g RDX to 40mL of acetone, add 0.25g BHDBTL, stir at 50°C for 0.5h, drop the mixture into rapidly stirring water with a thermos dropper, after the dropwise addition, stir for 5min, filter and dry at 50°C to obtain Modified RDX-5%BHDBTL.
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Abstract
The invention discloses a method for coating RDX cyclotrimethylene trinitramine and HMX cyclotetramethylene tetranitramine and a coating material thereof. The coating material is 2, 3-dihydroxymethyl-2, 3-binitro-1, 4-butanediol tetralaurate, 2, 3-dihydroxymethyl-2, 3-binitro-1, 4-butanediol tetrastearate or 2, 3-dihydroxymethyl-2, 3-binitro-1, 4-butanediol tetra(12-hydroxystearic acid) ester. The method for coating RDX and HMX comprises the following steps: adding RDX or HMX and the wrapping material into acetone or DMSO (Dimethylsulfoxide); fully stirring; heating to 50 DEG C; dropwise adding the mixed liquor by a heat preserving dropper to quickly stirred water; and filtering and drying to constant weight. Compared with conventional inertial materials, the adopted coating material comprises two nitro groups in the molecular structure, and performances of RDX and HMX coated with the wrapping material are improved to a certain extent. The mechanical sensitivity test results show that the degree of percussion sensitivity and the frictional sensitivity of RDX coated with BHDBTL, BHDBTS and DHDBTHS are remarkably lower than those of a simple substance RDX. The degree of percussion sensitivity of HMX coated with BHDBTL, BHDBTS and DHDBTHS are remarkably lower than those of a simple substance HMX and the frictional sensitivity tends to get reduced.
Description
technical field [0001] The invention relates to a coating material for coating RDX and HMX and a preparation method for coating RDX and HMX, belonging to the field of applied chemistry. Background technique [0002] The main representatives of nitramine explosives are RDX (RDX) and Octogen (HMX). They have the advantages of detonation stability and high detonation velocity, and are widely used in ammunition charges, or as an important part of propellant and rocket propellant. In the late last century, nitramine explosives have become the most eye-catching class of explosives. Due to the high production of explosive gaseous products of nitramine explosives, they have high working ability and energy level, but their impact and friction on the outside The reaction is relatively sensitive, which adds serious safety risks to the development, storage, transportation and use of propellants, and limits the further application of nitramine explosives to a certain extent. [0003] A...
Claims
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