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Press-fitting insensitive high polymer bonded explosive and preparation method thereof

A high polymer and bonding technology, which is applied in the field of press-packed insensitive high polymer bonded explosives and its preparation, can solve the problems of low coating degree, wide particle size distribution, poor adhesion between binder and explosive particles, etc. simple effect

Active Publication Date: 2022-08-09
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a press-packed insensitive high polymer bonded explosive and its preparation method, which solves the problem of poor adhesion between the binder and explosive particles, low coating degree and large particles in the existing press-packed high polymer bonded explosives. And the technical problem of insufficient safety performance of explosives caused by wide particle size distribution

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  • Press-fitting insensitive high polymer bonded explosive and preparation method thereof
  • Press-fitting insensitive high polymer bonded explosive and preparation method thereof

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preparation example Construction

[0023] The invention provides a preparation method of press-packed insensitive high polymer bonded explosive, comprising the following steps: mixing 1,1-diamino-2,2-dinitroethylene and an anti-solvent to obtain an anti-solvent suspension;

[0024] Dissolving the binder into the anti-solvent suspension to obtain a blended suspension;

[0025] Ultrasonic dispersion and mechanical stirring are carried out simultaneously for the blended suspension to obtain a stable suspension;

[0026] The stable suspension is spray-dried to obtain a press-packed insensitive high polymer bonded explosive.

[0027] In the present invention, without special instructions, the raw materials used are all commercially available commodities well known in the art.

[0028] In the present invention, 1,1-diamino-2,2-dinitroethylene is mixed with an anti-solvent to obtain an anti-solvent suspension.

[0029] In the present invention, the median particle size D of the 1,1-diamino-2,2-dinitroethylene 50 Pr...

Embodiment 1

[0046] The composition and preparation process parameters of the pressure-packed polymer bonded explosive (calculated by mass percentage) of the present embodiment are as follows:

[0047] Main explosive: FOX-7, 95%; binder system: ethylene-vinyl acetate copolymer, 1%; vinylidene fluoride and hexafluoropropylene copolymer, 4%.

[0048] The concrete steps of this embodiment are:

[0049] (1) take by weighing FOX-7 and add in ethyl acetate, wherein the mass ratio of FOX-7 and ethyl acetate is 2:98, obtain anti-solvent suspension; Take by weighing ethylene-vinyl acetate copolymer and vinylidene fluoride and The hexafluoropropylene copolymer is dissolved in the anti-solvent suspension to form a mixed suspension;

[0050] (2) under the temperature condition of 25 ℃, the container where the blended suspension prepared in step (1) is placed is placed in an ultrasonic disperser, the ultrasonic power is 270W, and a mechanical stirrer is used to stir at the same time, and the stirring ...

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Abstract

The invention provides a press-fitting insensitive high polymer bonded explosive and a preparation method thereof, and belongs to the technical field of energetic materials. According to the method, powder forming and drying are completed in one step through the spray drying technology, drying power comprises the saturation degree, the capillary tube and the diffusion mechanism of the adhesive, and the higher drying power enables the coating effect of the adhesive on explosive crystals to be higher; therefore, the problem of poor safety performance of the press-fitting high-polymer-bonded explosive caused by weak bonding force between the adhesive and explosive crystals, non-uniform adhesive distribution, low coating degree, large particles and wide particle size distribution in the preparation process of the existing high-polymer-bonded explosive is solved.

Description

technical field [0001] The invention relates to the technical field of energetic materials, in particular to a press-packed insensitive high polymer bonded explosive and a preparation method thereof. Background technique [0002] Insensitive ammunition has become the trend of ammunition development in countries around the world. The United States and NATO have successively formulated standards for evaluating and testing insensitive ammunition, and many countries have required that new weapons and equipment must use and fill insensitive energetic materials. The emergence of 1,1-diamino-2,2-dinitroethylene (FOX-7) is of great significance for the development of insensitive munitions. Since its appearance in 1998, FOX-7 can pass the tests of insensitive ammunition such as fast roasting, slow roasting, bullet impact and better heat resistance due to its excellent comprehensive performance, namely high energy density, low impact and friction sensitivity. , has received extensiv...

Claims

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Application Information

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IPC IPC(8): C06B25/00C06B21/00
CPCC06B25/00C06B21/0091
Inventor 李小东王晶禹刘文杰孙彦涛杨玥赵悦
Owner ZHONGBEI UNIV
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