Preparation method of nano grid octogen

An octogen and nano-grid technology, applied in the field of energetic material preparation, can solve the problems of complicated operation, small preparation amount, harsh preparation conditions, etc., and achieve the effect of low preparation cost and mild reaction conditions.

Active Publication Date: 2014-03-12
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of these methods involves expensive large-scale equipment, and there are problems such as cumbersome operations, harsh preparation conditions, and small preparation volumes.

Method used

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  • Preparation method of nano grid octogen
  • Preparation method of nano grid octogen
  • Preparation method of nano grid octogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] At 65°C, 68g of HMX was added to 100g of DMSO, stirred and cooled to room temperature, the solid was filtered under dry air, rinsed once with ether, and then dried with dry air to obtain 80g of HMX / DMSO complex. Add polyvinylpyrrolidone (PVP) surfactant into water to form a PVP solution with a mass fraction of 0.4%; add 1.09 g of HMX / DMSO complex to 10.13 g of PVP solution, and stir for 5 min at a speed of 300 rpm; filter the solution and use Wash the product 3 times with distilled water, dry it in vacuum at 50°C, and obtain 0.66g of nano-grid HMX powder with a pore size of about 500nm. The SEM picture is as follows: figure 1 shown.

Embodiment 2

[0031] The preparation of HMX / DMSO complex is the same as in Example 1. Add 1.07g of HMX / DMSO complex into 30.05g of distilled water, stir at 300rpm for 5min, and use 28KHz50W ultrasonic means to assist; filter and dry at 50°C in vacuum to obtain a mesh with a pore size of about 10nm and a particle size of about 500nm Ge HMX powder 0.56g, SEM picture as figure 2 shown.

Embodiment 3

[0033] The preparation of HMX / DMSO complex is the same as in Example 1. Add polyvinylpyrrolidone (PVP) surfactant to water to make a PVP solution with a mass fraction of 0.9%; add 99g of HMX / DMSO complex to 3062g of PVP solution, stir at 300rpm for 25min; filter the solution and wash with distilled water The product was dried 3 times in vacuum at 50°C to obtain 56g of nanogrid HMX powder with a pore size of about 300nm. The SEM picture is as follows image 3 shown.

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Abstract

The invention discloses a preparation method of nano grid octogen, which comprises the steps of adding a HMX / DMSO complex into pure water or a surfactant solution, stirring for certain time, filtering, washing and drying to obtain nano grid octogen powder with different micro structures. The method is used for quickly preparing nano grid octogen based on the HMX / DMSO complex, and can realize preparation from gram level to kilogram level; expensive large equipment is not required; the method is performed under room temperature conditions, and reaction conditions are mild; the preparation cost is low.

Description

technical field [0001] The invention belongs to the field of energetic material preparation, and relates to a preparation method of nano-grid octogene (HMX), specifically a method for rapidly and efficiently preparing nano-grid octogene by using HMX / DMSO complex as a raw material. Background technique [0002] Octojin (HMX) is one of the explosives with the best comprehensive performance in terms of crystal density, detonation energy and thermal safety among existing single explosives. From the perspective of explosive "hot spot" formation, the particle size and internal cavity size of explosive will affect the hot spot ignition and detonation growth process, and also significantly affect its impact sensitivity and friction sensitivity. Especially for primers, the macroscopic size of explosives and Microstructure is especially important. By designing different preparation process routes of explosives, different particle sizes and micropore structure control can be achieved ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D257/02B82Y40/00
CPCB82Y40/00C07D257/02
Inventor 陈娅徐瑞娟曾贵玉黄兵王蔺
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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