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Method for inhibiting crystal change of epsilon-CL-20 crystal by catecholamine polymer and epsilon-CL-20 crystal with high crystal change resistance

A-CL-20, catecholamine technology, applied in the field of CL-20 modification, can solve the problems of complex process, limited effect of improving the crystal transformation temperature of CL-20, etc., and achieve the effect of good safety and simple operation

Active Publication Date: 2020-07-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the conventional coating of CL-20 with natural rubber, butadiene rubber, EPDM rubber, etc. can increase the crystal transition temperature of CL-20 to a certain extent (about 15-20°C), but this method The process is complicated and the effect of increasing the crystal transformation temperature of CL-20 is limited

Method used

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  • Method for inhibiting crystal change of epsilon-CL-20 crystal by catecholamine polymer and epsilon-CL-20 crystal with high crystal change resistance
  • Method for inhibiting crystal change of epsilon-CL-20 crystal by catecholamine polymer and epsilon-CL-20 crystal with high crystal change resistance
  • Method for inhibiting crystal change of epsilon-CL-20 crystal by catecholamine polymer and epsilon-CL-20 crystal with high crystal change resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Weigh 0.2 g of dopamine, dissolve it in 300 mL of Tris-HCl buffer (10 mM, pH=8.5) and stir for 10 min, so that dopamine is fully dissolved in Tris-HCl buffer to obtain a dopamine solution;

[0041] (2) Weigh 19.8g of ε-CL-20 crystal material (particle size is 150~300μm), add it into the dopamine solution, stir and react at room temperature (25°C) and 180r / min for 12h, during the reaction process Observe that the color of the system changes from transparent to dark brown;

[0042] (3) The suspension obtained after the reaction was suction-filtered, the obtained solid material was washed with absolute ethanol, and then dried in an oven at 50° C. for 6 hours to obtain ε-CL-20 crystals with high crystal transformation resistance.

Embodiment 2

[0044] The ε-CL-20 crystal with high anti-crystal transformation property was prepared according to the method of Example 1, except that levodopa was used instead of dopamine.

Embodiment 3

[0046] The high crystal transformation resistance ε-CL-20 crystal was prepared according to the method of Example 1, except that 6-hydroxydopamine was used instead of dopamine.

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Abstract

The invention provides a method for inhibiting crystal change of an epsilon-CL-20 crystal by a catecholamine polymer and the epsilon-CL-20 crystal with high crystal change resistance, and belongs to the technical field of CL-20 modification. A catecholamine polymer coating layer is formed on the surface of an epsilon-CL-20 crystal raw material by utilizing the self-polymerization characteristic ofcatecholamine, and the crystal change of the epsilon-CL-20 crystal can be effectively inhibited by controlling the content of the epsilon-CL-20 crystal and the catecholamine polymer within a specificrange; compared with the epsilon-CL-20 crystal raw material, the crystal transition temperature of the obtained product can be increased by 35-40 DEG C after the product is treated by the method. Inaddition, the method is easy to operate, good in safety and suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of CL-20 modification, in particular to a method for inhibiting the crystal transformation of ε-CL-20 crystal by a catecholamine polymer and an ε-CL-20 crystal with high crystal transformation resistance. Background technique [0002] Hexanitrohexaazaisowurtzitane (HNIW or CL-20) is a polymorphic compound with high energy density. There are four crystal forms under normal temperature and pressure conditions, namely α, β, γ and ε, of which ε The crystal form has the highest density, the highest energy, and the lowest sensitivity, and has the most application prospects. In terms of thermodynamics, the ε crystal form is the most thermodynamically stable crystal form under normal temperature and pressure conditions. Studies have found that under certain conditions, such as heat or the action of surrounding media, ε-CL-20 will transform into other crystal forms, and this process is called the crystal form transfo...

Claims

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Application Information

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IPC IPC(8): C30B33/00C30B29/54
CPCC30B29/54C30B33/00
Inventor 焦清介张洪垒郭学永潘启吴成成向俊舟王书记
Owner BEIJING INSTITUTE OF TECHNOLOGYGY