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Preparation method of g-C3N4-based composite energetic material

A composite material, g-c3n4 technology, applied in the field of preparation of g-C3N4-based composite energetic materials, can solve problems such as energy loss of explosive samples, poor stability of ammonium nitrate explosives, low mechanical sensitivity, etc., and achieves good practical application prospects , Enhanced thermal stability and safety, the effect of strong universality

Pending Publication Date: 2021-06-04
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defects of the prior art, the present invention proposes a g-C 3 N 4 A method for preparing a base composite energetic material to solve the problems of poor stability of ammonium nitrate explosive itself, low mechanical sensitivity and energy loss of explosive samples after coating

Method used

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  • Preparation method of g-C3N4-based composite energetic material
  • Preparation method of g-C3N4-based composite energetic material
  • Preparation method of g-C3N4-based composite energetic material

Examples

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preparation example Construction

[0041] g-C 3 N 4 The preparation method of the matrix composite energetic material comprises the following steps:

[0042] S1. Put the crucible in a muffle furnace with urea as the raw material, and after calcination at a high temperature of 550°C, a light yellow powder g-C is obtained 3 N 4 ;

[0043] S2. The ammonium nitrate explosive (described with HMX as an example) and g-C 3 N 4 The materials are mixed according to a certain mass ratio, put into a mortar and grind evenly to obtain the HMX composite material 1 after physical grinding;

[0044] S3. Combining graphene oxide GO and g-C 3 N 4 The material was dispersed in deionized water, and GO and g-C were obtained after ultrasonic dispersion for 50 min 3 N 4 suspension;

[0045] S4. According to ammonium nitrate explosive: g-C 3 N 4 : Add appropriate amount of ammonium nitrate explosive to GO and g-C in different mass ratios of GO 3 N 4 In the suspension of HMX, g-C was obtained after ultrasonic dispersion fo...

Embodiment 1

[0052] g-C 3 N 4 The preparation method of HMX-based composite energetic material comprises the following process steps:

[0053] g-C 3 N 4 Powder preparation:

[0054] Grind 20 g of urea raw material evenly and place it in a crucible, raise the temperature of the raw material to 500°C at a heating rate of 2K / min, keep it warm for 4 hours and cool to room temperature, take it out, and grind it evenly to obtain g-C 3 N 4 Powder.

[0055] Follow HMX: g-C 3 N 4 The mass ratio is 97 / 3, the 30mg g-C 3 N 4 Add 970mg of HMX into the mortar and grind until the whole is uniform to get HMX / g-C 3 N 4 (97 / 3) composite material, the impact sensitivity is 5.0J (3.6J for raw material HMX), and the friction sensitivity is 128N (96N for raw material HMX).

[0056] The g-C prepared in this embodiment 1 3 N 4 Powder and HMX / g-C 3 N 4 (97 / 3) composite material was analyzed by scanning electron microscope, and its crystal morphology is as follows figure 1 with figure 2 Shown, th...

Embodiment 2

[0058] g-C 3 N 4 and GO suspension preparation:

[0059] Weigh 20mg g-C respectively 3 N 4 Add 10mgGO and 60mL deionized water, and ultrasonically disperse for 50min to obtain g-C 3 N 4 and GO suspension (configuration concentration is 0.5mg / mL);

[0060] To HMX: g-C 3 N 4 : GO mass ratio is 97 / 2 / 1 for doping, adding 970mg of HMX explosives to the above g-C 3 N 4 and GO suspension, after ultrasonic treatment for 60min, the HMX, g-C 3 N 4 Add 64 μL of hydrazine hydrate (80% mass fraction) to the mixture with GO suspension, stir in an oil bath at 100°C at a speed of 400r / min for 2h, cool to room temperature, filter with suction, and rinse with deionized water at room temperature for several times , placed in a vacuum drying oven to obtain g-C 3 N 4 HMX / g-C with GO as desensitizer 3 N 4 / rGO (97 / 1 / 2) composite material, its impact sensitivity is 12J (3.6J for raw material HMX), and its friction sensitivity is 128N (96N for raw material HMX).

[0061] The HMX / g-C p...

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Abstract

The invention discloses a preparation method of a g-C3N4-based composite energetic material, which comprises the following steps: physically grinding g-C3N4 and an explosive according to a certain mass ratio by respectively adopting simple physical grinding, in-situ reduction and electrostatic self-assembly methods to obtain a composite material 1, coating the surfaces of explosive crystals with g-C3N4 and GO subjected to ultrasonic treatment through in-situ reduction to obtain a composite material 2, modifying the surface of the ammonium nitrate explosive by utilizing the high cation characteristic of polyethyleneimine, and then obtaining a composite material 3 by an electrostatic self-assembly method. According to the invention, g-C3N4 and GO are combined to jointly reduce sensitivity of ammonium nitrate explosive crystals, the ammonium nitrate explosive composite material with sensitivity reduction effect and high energy performance is obtained, and high stability, high thermal conductivity and lubricity of g-C3N4 and GO are utilized to passivate the mechanical sensitivity of an energetic material.

Description

technical field [0001] The invention belongs to the technical field of composite energetic materials, in particular to g-C 3 N 4 Preparation method of matrix composite energetic material. Background technique [0002] In the modern warfare environment, in order to meet the high-performance military requirements of modern weapons and equipment, the weapon equipment system puts forward higher requirements for the comprehensive performance of single-mass energetic materials. There is an urgent need to develop low-sensitivity, high-safety energetic materials. In addition to paying attention to the impact of the mechanical sensitivity and spark sensitivity of energetic materials on the safety of energetic materials, the energy properties of energetic materials should also be considered to ensure their safety. High energy properties. Therefore, how to prepare high-energy and low-sensitivity energetic composite materials is one of the most concerned topics in the research field ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28C06B23/00
CPCC06B23/005C06B31/28
Inventor 金波彭汝芳宋晓敏黄琪张青春
Owner SOUTHWEAT UNIV OF SCI & TECH
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