Methods for Improving Surface Wettability of Energetic Materials and Mechanical Properties of Explosives

A technology for wetting properties and explosives, which is applied in the field of improving the surface wetting properties of energetic materials and the mechanical properties of explosives, and in the field of energetic material processing, which can solve the problems of easy debonding, low surface energy, poor wettability, etc., and achieve uniformity And the effect of good integrity, good wetting performance and uniformity improvement

Active Publication Date: 2019-05-21
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1,3,5-Triamino-2,4,6-trinitrobenzene (TATB), Octogen (HMX), etc. are widely used in weapon systems due to their good mechanical sensitivity and high detonation energy In the formulation of press-packed explosives, cast PBX explosives, propellants and civil blasting explosives, but its surface has low surface energy, and the wettability with the liquid phase is poor, and the particles are prone to debonding in the glue, resulting in Its poor mechanical properties limit its wide application in low-vulnerability ammunition
In the process of developing insensitive ammunition, in order to improve the mechanical properties of its explosives, a variety of functional additives are usually added to the formula to change the wettability of its surface, expecting to improve the mechanical strength of its system, but these functional additives Addition often reduces the detonation performance of the explosive itself, and whether the functional additive can really improve the wetting performance of its surface remains to be further confirmed

Method used

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  • Methods for Improving Surface Wettability of Energetic Materials and Mechanical Properties of Explosives
  • Methods for Improving Surface Wettability of Energetic Materials and Mechanical Properties of Explosives
  • Methods for Improving Surface Wettability of Energetic Materials and Mechanical Properties of Explosives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for improving the surface wettability of energetic materials and the mechanical properties of explosives, comprising the following steps:

[0027] Step 1: Prepare 200 mL of Tris solution with a concentration of 20 mmol / L;

[0028] Step 2: Dissolving dopamine hydrochloride at a concentration of 2 g / L in the Tris solution, the pH of the solution after complete dissolution is 8.5;

[0029] Step 3: Put 20g of TATB in the above-mentioned solution, use a stirrer to stir and mix the dispersion at a speed of 500r / min, and the stirring time is 12h;

[0030] Step 4: Suction filter and clean the stirred dispersion liquid, and wash with distilled water for 3 times;

[0031] Step 5: Place the cleaned material in an oven at 50° C. for 5 hours to obtain a modified TATB material.

[0032] The modified TATB obtained in Example 1 was dispersed in a mixture of 123 resin and diethyl disulfate with a solid content of 50%, and cured at 70° C. for 12 hours to obtain a TATB-based ca...

Embodiment 2

[0034] A method for improving the surface wettability of energetic materials and the mechanical properties of explosives, comprising the following steps:

[0035] Step 1: Prepare 200 mL of Tris solution with a concentration of 20 mmol / L;

[0036] Step 2: Dissolving dopamine hydrochloride at a concentration of 4 g / L in the Tris solution, and the pH value of the solution after complete dissolution is 8.5;

[0037] Step 3: Put 20g of TATB in the above-mentioned solution, use a stirrer to stir and mix the dispersion at a speed of 500r / min, and the stirring time is 6h;

[0038] Step 4: Suction filter and clean the stirred dispersion liquid, and wash with distilled water for 3 times;

[0039] Step 5: Place the cleaned material in an oven at 70° C. for 5 hours to obtain a modified TATB material.

[0040] The modified TATB obtained in Example 2 was dispersed in a mixture of 123 resin and diethyl disulfate with a solid content of 70%, and cured at 70° C. for 12 hours to obtain a TATB...

Embodiment 3

[0042] A method for improving the surface wettability of energetic materials and the mechanical properties of explosives, comprising the following steps:

[0043] Step 1: Prepare 200 mL of ammonia solution with a concentration of 10 mL / L;

[0044] Step 2: Dissolving dopamine hydrochloride at a concentration of 2 g / L in the ammonia solution, the pH value of the solution after complete dissolution is 10;

[0045] Step 3: Put 20g of HMX in the solution of the above configuration, use a stirrer to stir and mix the dispersion at a speed of 500r / min, and the stirring time is 12h;

[0046] Step 4: Suction filter and clean the stirred dispersion liquid, and wash with distilled water for 3 times;

[0047] Step 5: Place the cleaned material in an oven at 50° C. for 5 hours to obtain a modified HMX material.

[0048] The modified HMX obtained in Example 3 was dispersed in a mixture of hydroxyl-terminated polybutadiene and TDI with a solid content of 50%, and cured at 70° C. for 36 hour...

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Abstract

The invention discloses a method for improving the surface wettability of an energetic material and the mechanical property of an explosive, and the method is characterized by comprising the following steps: step 1, preparing an alkaline solution with the pH value of 8-11; step 2, dissolving catechol substance in the alkaline solution, wherein the concentration of the catechol substance after dissolution is 0.1g / L-20g / L and the pH value of the completely dissolved solution is still greater than 7; step 3, putting energetic material into the solution prepared in the step 2, and stirring the mixed dispersion liquid by using a stirrer, wherein the stirring time is 0.1h-48h; step 4, carrying out suction filtration cleaning on the stirred dispersion liquid, washing for 2-5 times by using distilled water; and step 5, putting the cleaned material into a drying oven at the temperature of 50-80 DEG C for 1-24 hours to obtain the modified energetic material. The preparation method of the modified energetic material is simple, the uniformity and completeness of the modified energetic material are good, and the wettability is good.

Description

technical field [0001] The invention relates to a method for processing energetic materials, in particular to a method for improving the surface wettability of energetic materials and the mechanical properties of explosives, and belongs to the technical field of preparation and processing of energetic materials. Background technique [0002] With the development of modern weapon systems and energetic materials, various countries pay more and more attention to the research of insensitive ammunition and insensitive materials. 1,3,5-Triamino-2,4,6-trinitrobenzene (TATB), Octogen (HMX), etc. are widely used in weapon systems due to their good mechanical sensitivity and high detonation energy In the formulation of press-packed explosives, cast PBX explosives, propellants and civil blasting explosives, but its surface has low surface energy, and the wettability with the liquid phase is poor, and the particles are prone to debonding in the glue, resulting in Its poor mechanical pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00
CPCC06B23/00
Inventor 祝青肖春谢虓李尚斌罗观
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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