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New energetic material with high reaction enthalpy and its preparation method

A technology of reaction and formulation, applied in the direction of explosives, etc., can solve the problems of low energy release efficiency and poor dispersion, and achieve the effects of high contact tightness, convenient preparation and simple process

Inactive Publication Date: 2018-05-11
ZHONGBEI UNIV
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Problems solved by technology

[0004] In order to solve the problems of poor dispersion and low energy release efficiency of the existing fluoropolymer / energetic metal hybrid energetic system, the present invention provides a new high reaction enthalpy energetic material and its preparation method

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  • New energetic material with high reaction enthalpy and its preparation method

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preparation example Construction

[0025] The embodiment of the present invention also provides a method for preparing a novel energetic material with high reaction enthalpy, comprising the following steps:

[0026] S1. At 40°C, under the condition of ultrasonic stirring, dissolve the fluoropolymer in water, stir ultrasonically for 30-60 minutes, and make a 5-40% aqueous solution;

[0027] S2. Add a set amount of energetic metal or a mixture of energetic metal and energetic nonmetal to the aqueous solution obtained in step S1 in a vacuum glove box to form a mixed system; in this step, continue ultrasonic stirring, and the stirring time is 40~ 120min; the water content in the vacuum glove box is less than 1ppm; the oxygen content is less than 1ppm, and the box is filled with nitrogen;

[0028] S3. Put the mixed system obtained in step S2 in a vacuum drying oven, cast to form a film, and dry at 40° C. for >12 hours to obtain a dry film, which is a new formula energetic material.

Embodiment

[0030] 1) At 40°C, under the condition of ultrasonic stirring, the perfluorocarboxylic acid resin with the -COOH group content of 0.6mmol / g was dissolved in water, and ultrasonically stirred for 30min to form a 20% aqueous solution; 2) in vacuum gloves Add nano-aluminum to the aqueous solution in the box, so that the weight ratio of perfluorocarboxylic acid resin to aluminum is 7 / 3 to make a mixed system; in this step, ultrasonic stirring is continued, and the stirring time is 60min; the water content in the vacuum glove box less than 1ppm; the oxygen content is less than 1ppm, and the box is filled with nitrogen; 3) the mixed system in 2) is placed in a vacuum drying oven, cast into a film, and dried at 40°C for > 12h, and the resulting dry film is the new product of the present invention. Formulated energetic materials. 4) In a differential scanning calorimeter, the film in 3) is subjected to a calorimetric test, and the results are shown in figure 1 , the calculated result...

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Abstract

The invention discloses a novel energy-containing material with high reaction enthalpy and a preparation method for the novel energy-containing material. The material comprises the following components in percentage by mass: 30-70% of a fluorine-containing component as an oxidizing agent and 70-30% of an energy-containing metal component or a mixed component of energy-containing metals and energy-containing non-metals as fuel (a reducing agent), wherein the fluorine-containing component is a high-fluorine-content polymer which can be dissolved by a common solvent and the fluorine content is greater than 80%; the energy-containing metal component is energy-containing metal single substances such as aluminum and titanium; the energy-containing non-metal component is energy-containing non-metal single substances such as boron and silicon. By using the fluorine-containing polymer which can be dissolved, solutions of the energy-containing material oxidizing agent component and the fuel component are mixed by a wet process, so that the mixing dispersity is high and the contact tightness is high, and the chemical reaction and the chemical latent energy release rate of the obtained energy-containing material are favorably improved, and therefore, the reaction enthalpy is further improved. The preparation process is simple and the processing temperature is low, and a heat reaction and excitation in advance of the energy-containing material can be avoided during processing, so that safety processing is realized.

Description

technical field [0001] The invention relates to the field of special energy materials, in particular to a novel high reaction enthalpy energetic material and a preparation method thereof. Background technique [0002] Energetic materials refer to a large class of substances that can release huge energy in a short period of time, such as gunpowder, explosives, pyrotechnics, and propellants. They are one of the indispensable material bases for military, national defense, aerospace, and civil blasting projects. . Improving the reaction enthalpy of energetic materials has always been a research hotspot in the field of energetic materials research and development, because increasing the reaction enthalpy can greatly reduce the amount of energetic materials used, increase their explosive power, and is also conducive to improving the thrust-to-weight ratio of aircraft, so as to develop high Powerful weapons, heavy-duty vehicles, and tiny thrusters. [0003] For this reason, many ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B33/00
CPCC06B33/00
Inventor 陈晓勇王新新丑修建穆继亮熊继军梁庭贾平岗洪应平安坤
Owner ZHONGBEI UNIV
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