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Method for rapidly preparing uniformly coated energetic material

A coating and uniform technology, used in offensive equipment, explosives processing equipment, non-explosive/non-thermal agent components, etc., can solve the problems of increasing process risk factors and risks, raw material troubles, long time consumption, etc., and shorten the polymerization reaction time. , Short reaction time, the effect of shortening the reaction time

Inactive Publication Date: 2019-10-22
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

[0003] In the previous research and the applied invention patent, it was found that the catechols contained in the protein secreted by mussels in nature can self-polymerize under certain environmental conditions and form a tight coating on the surface of various substances Layer, using this simple self-polymerization reaction can form a thin and dense coating layer on the surface of explosive crystals, which can exert its desensitization effect, but the preparation process of this method takes a long time, usually based on the self-polymerization to form a film The thickness can be adjusted and the reaction time is 1h to 72h, and the reaction needs to be continuous and uninterrupted. For the stirring reaction of dangerous substances such as energetic materials, the long-term reaction increases the risk factors and risks of the process, and causes serious damage to the preparation of large quantities of raw materials. must be troubled

Method used

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  • Method for rapidly preparing uniformly coated energetic material
  • Method for rapidly preparing uniformly coated energetic material
  • Method for rapidly preparing uniformly coated energetic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Prepare 30mL of 100mmol / L Tris solution, and the pH value of the solution is 8.5;

[0033] Step 2: Add 80mmol / L sodium periodate to 30mL solution and completely dissolve in the solution;

[0034] Step 3: Put 10g of HMX in the solution of the above configuration, use a stirrer to stir and mix the dispersion at a speed of 200r / min, so that the surface of the explosive particles and the solution are fully wetted;

[0035] Step 4: Add dopamine hydrochloride with a concentration of 40mmol / L to the above mixed dispersion, and stir to completely dissolve it;

[0036] Step 5: Continue to stir the above mixed dispersion with a stirrer at a speed of 300r / min for 2min;

[0037] Step 6: Suction filter and wash the dispersion liquid after stirring, and wash twice with distilled water and ethanol respectively;

[0038] Step 7: Dry the cleaned material in an oven at 50°C for 5 hours to obtain the coated HMX material.

[0039] The scanning electron micrograph of the coated O...

Embodiment 2

[0041] Step 1: Configure 50mL of 200mmol / L Tris solution, and the pH value of the solution is 8.7;

[0042] Step 2: Add 80mmol / L sodium periodate to 50mL solution, completely dissolve in the solution;

[0043] Step 3: Put 20g of RDX in the above-mentioned solution, use a stirrer to stir and mix the dispersion at a speed of 100r / min, so that the surface of the explosive particles and the solution are fully wetted;

[0044] Step 4: Add dopamine hydrochloride with a concentration of 40mmol / L to the above mixed dispersion, and stir to completely dissolve it;

[0045] Step 5: Continue to stir the above mixed dispersion with a stirrer at a speed of 800r / min for 2min;

[0046] Step 6: Suction filter and wash the dispersion liquid after stirring, and wash twice with distilled water and ethanol respectively;

[0047] Step 7: Dry the cleaned material in an oven at 80° C. for 0.5 h to obtain a coated RDX material.

[0048] The scanning electron micrograph of the coating RDX (RDX) crys...

Embodiment 3

[0050] Step 1: Configure 50mL of 200mmol / L Tris solution, and the pH value of the solution is 9.7;

[0051] Step 2: Add 160mmol / L sodium periodate into the 50mL solution and completely dissolve in the solution;

[0052] Step 3: Put 20g of CL-20 in the above-mentioned solution, use a stirrer to stir and mix the dispersion at a speed of 1000r / min, so that the surface of the explosive particles and the solution are fully wetted;

[0053] Step 4: Add dopamine hydrochloride with a concentration of 80mmol / L to the above mixed dispersion, and stir to completely dissolve it;

[0054] Step 5: Continue to stir the above mixed dispersion with a stirrer at a speed of 1000r / min for 1min;

[0055] Step 6: Suction filter and wash the dispersion liquid after stirring, and use distilled water and ethanol to wash 5 times respectively;

[0056] Step 7: Dry the cleaned material in an oven at 50°C for 5 hours to obtain the coated CL-20 material.

[0057]The scanning electron micrograph of the c...

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Abstract

The invention discloses a method for rapidly preparing a uniformly coated energetic material, and relates to the technical field of energetic composite materials. The method is applicable to a large proportion of common water insoluble energetic materials, adopts a simple solvent stirring method, and can form a uniform coated layer with controllable thickness on the surface of an energetic material crystal through the principle of rapid polymerization of catechol group in an aqueous solution with an oxidizing agent. The method cannot have other negative impacts on the energetic material, ensures that the formed coated layer is nearly identical with coated layers formed through common preparation methods, ensures that coated layer preparation on the surface of the energetic material becomesrapid and controllable, and greatly shortens the technical period of material preparation.

Description

technical field [0001] The invention relates to the technical field of energetic composite materials, in particular to a method for rapidly preparing uniformly coated energetic materials, which has comparative advantages in raw material processing and batch preparation of energetic materials, insensitive explosives, low-vulnerability explosives and other formula design. Good application prospects. Background technique [0002] With the development of energetic materials, various countries are paying more and more attention to the research of insensitive ammunition and insensitive materials. Energetic materials coated with desensitization are often used as raw materials in the formulation design of low-fragile explosives or insensitive explosives . Energetic materials coated for desensitization need to have a dense and uniform surface coating layer with low content, and the influence on its own detonation performance is within a controllable range, so that coated energetic m...

Claims

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Application Information

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IPC IPC(8): C06B23/00C06B21/00
CPCC06B21/0083C06B23/00
Inventor 祝青王德海蒋全萍李尚斌罗观
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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