A method for preparing al/cuo nano-energetic materials based on alkaline catalytic sol-gel method

A sol-gel, alkaline technology, applied in offensive equipment, explosives processing equipment, explosives, etc., can solve problems such as unfavorable mixing of nano-Al particles with CuO, difficulty in Al dispersion, and achieve the effect of avoiding sedimentation and solving poor dispersion.

Inactive Publication Date: 2021-06-04
ZHONGBEI UNIV
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  • Summary
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AI Technical Summary

Problems solved by technology

[0003] At present, the typical scheme for the preparation of Al / CuO nanocomposite energetic material systems based on sol-gel is the reaction route of copper chloride and propylene oxide, but in practice, it is found that this route is difficult to disperse Al, which is not conducive to nano-Al particles Mixing with CuO

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 0.8g of sodium dodecylsulfonate, 2.4g of urea and 5ml of deionized water, put them in a three-necked bottle, stir in a constant temperature water bath at 50°C at 350r / s for 1h, measure the pH between 7-8 Weakly alkaline;

[0022] 720mg Cu(NO 3 ) 2 ·3H 2 O was dispersed in 3ml of absolute ethanol, placed in an ultrasonic water bath for 30 minutes, and then added dropwise to the above-mentioned three-neck flask; then 5ml of propylene oxide was added dropwise, and stirred at 260r / s for 20min;

[0023] Take 40mg of nano-aluminum powder (nAl) and disperse it in 3ml of absolute ethanol, seal it, place it in an ultrasonic water bath for 10 minutes, and then drop it into the above-mentioned three-necked bottle; stir for 1 hour, take it out and seal it, and put it in the refrigerator for 5 minutes to obtain wet gel.

[0024] After the obtained wet gel was left to stand in the refrigerator for 2-3 days, the gel was placed in a vacuum freeze dryer for freeze-drying to ob...

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PUM

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Abstract

The invention discloses a method for preparing Al / CuO nanometer energetic materials based on the basic catalytic sol-gel method, using urea as the basic catalyst and sodium dodecylsulfonate as the surfactant, in a weak alkaline environment A sol-gel method is used to prepare Al / CuO nanometer energetic materials; the pH of the weak alkaline environment is between 7-9. It solves the problem that the gel condition of the Al / CuO system is difficult to control, shortens the gel time, avoids the precipitation of nAl in the CuO gel, and solves the problem that the mixed nano energetic materials are easy to settle separately and have poor dispersion.

Description

technical field [0001] The invention relates to the field of composite energetic materials, in particular to a method for preparing Al / CuO nanometer energetic materials based on an alkaline catalytic sol-gel method. Background technique [0002] Energetic materials refer to single-substance compounds or mixtures that contain explosive groups or are composed of oxidizers and combustion agents, and can independently undergo chemical reactions, burn or explode, and output energy. Among them, composite energetic materials are the most diverse and powerful, and have been extensively studied. The composite system composed of nAl / CuO is an important class of nanocomposite energetic materials. Its theoretical enthalpy density is 4.07kJ / g, which is higher than other systems. Therefore, it is one of the general energetic aluminothermic systems. Therefore, there are currently many Researchers have invested in the development of nano-Al / CuO system nano-composite energetic material form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B33/00C06B21/00
CPCC06B21/00C06B33/00
Inventor 陈晓勇王新新熊继军梁庭贾平岗洪应平雷程刘文怡李晨张泽宇王佳乐
Owner ZHONGBEI UNIV
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