Energetic material 1,3-bis(3,4,5-trifluoro-2,6-dinitrophenyl)urea and its preparation method and application

A technology of dinitrophenyl and urea, applied in the field of compound preparation, can solve the problems of inconvenient transportation, low yield and the like, and achieve the effects of simple equipment, high yield and safe raw materials
CN110218164BActive Publication Date: 2021-10-01XINYANG NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XINYANG NORMAL UNIVERSITY
Publication Date
2021-10-01

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Abstract

The structural formula of 1,3-bis(3,4,5-trifluoro-2,6-dinitrophenyl) urea of ​​the present invention comprises the following steps for its preparation method: 3,4,5-trifluoroaniline is substituted The reaction obtains the intermediate product (3,4,5-trifluorophenyl) ethyl carbamate, and then through nitration reaction to obtain 1,3-bis(3,4,5-trifluoro-2,6-dinitrophenyl ) urea. ZXC‑19 has poor solubility in water and is soluble in most organic solvents. It has a very high density at 298K, has good thermal stability, high solid-state heat of formation and good detonation performance, low sensitivity, and no combustion products. Small molecular weight, suitable for use as rocket propellant. 1,3-bis(3,4,5-trifluoro-2,6-dinitrophenyl) urea has a very simple synthesis method, high yield, easy industrial production, environmental friendliness, and easy recrystallization. An important raw material for ZXC‑8.
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Description

technical field

[0001] The invention belongs to the technical field of compound preparation, and in particular relates to energetic material 1,3-bis(3,4,5-trifluoro-2,6-dinitrophenyl)urea and its preparation method and application. Background technique

[0002] Simple explosives have been difficult to meet the needs of national defense and civil blasting, so the search for high-energy insensitive explosives has always been a research hotspot. The element fluorine is in the upper right corner of the periodic table, has the strongest electronegativity and oxidizing properties, and is very active. It can react with most inorganic or organic substances at or below room temperature and release more heat. The heat of formation of fluorine-containing explosives is more negative than that of similar conventional explosives of the CHNO class. The study found that after introducing fluorine atoms into CHNO-containing high-energy compounds, due to its strong oxidation and high density...

Claims

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