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Preparation method for propellant fuel

A technology of propellant and fuel, applied in the field of propellant fuel and its preparation, can solve the problems of harmfulness to the environment and human health, increase in cost, high volatility, etc., and achieve the effects of reducing hazard, high safety and mild conditions

Inactive Publication Date: 2018-11-30
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

However, hydrazine compounds are highly volatile, highly toxic and highly carcinogenic, which is very harmful to the environment and human health, and because of their flammability and strong volatility, their transportation and storage costs are greatly increased.

Method used

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  • Preparation method for propellant fuel
  • Preparation method for propellant fuel
  • Preparation method for propellant fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017]

[0018] Dissolve 1.6ml of hydrazine (32g / mol) in 30ml of anhydrous tetrahydrofuran solution, stir and mix evenly, slowly add 75ml of borane tetrahydrofuran solution with a concentration of 1M at room temperature, stir and mix with magnetic force, and react at room temperature after the borane solution is added After 2h, the temperature was slowly raised to 70°C for 8h. After cooling down to room temperature, the tetrahydrofuran solution was spin-dried, and 50 ml of dichloromethane was added. After washing with acetone for several times, the dichloromethane was spin-dried to obtain a colorless transparent liquid 1, and the product yield was 89%. 1 H NMR(600MHz,DMSO-d6):δppm:1.5(s,2H),7.2(s,2H),0.04–0.40(m,3H,BH3).Elemental analysis,calcd(%)forBH7N2(46.07):H :15.38,N:61.06,Found,H:14.99,N:61.43.

Embodiment 2

[0020]

[0021] Dissolve 1.6ml of hydrazine (32g / mol) in 30ml of anhydrous tetrahydrofuran solution, stir and mix evenly, slowly add 110ml of borane tetrahydrofuran solution with a concentration of 1M at room temperature, stir and mix with magnetic force, and react at room temperature after the borane solution is added After 3h, the temperature was slowly raised to 70°C for 4h, and then the temperature was raised to 80°C for 10h. After cooling down to room temperature, spin dry the tetrahydrofuran solution, add 70ml of dichloromethane, wash with acetone for several times, spin dry the dichloromethane to obtain off-white liquid 2, and the product yield is 90.5%. 1 HNMR(600MHz,DMSO-d6):δppm:7.2(s,4H),0.09–0.42(m,6H,BH3).Elemental analysis,calcd(%)for B2H10N2(60.10):H:16.88,N:46.91, Found, H: 17.02, N: 47.22.

Embodiment 3

[0023]

[0024] Dissolve 2.3ml of monomethylhydrazine (46g / mol) in 30ml of anhydrous tetrahydrofuran solution, stir and mix evenly, slowly add 60ml of borane tetrahydrofuran solution with a concentration of 1M at room temperature, stir and mix with magnetic force, after the borane solution is added, After 2 hours of reaction at room temperature, the temperature was slowly raised to 70°C for 6 hours. After cooling down to room temperature, the tetrahydrofuran solution was spin-dried, and 40 ml of dichloromethane was added. After repeated washing with acetone, the dichloromethane was spin-dried to obtain a colorless transparent liquid 3, and the product yield was 87.3%. 1 H NMR(600MHz,DMSO-d6):δppm:1.5(s,H),2.47(m,3H,CH3),7.2(s,2H),0.04–0.40(m,3H,BH3).13C NMR(150MHz ,DMSO-d6):δ:ppm:34.15.Elemental analysis,calcd(%)for CH9BN2(60.09):C:20.05,H:15.14,N:46.76,Found,C:19.70,H:15.39,N:47.13 .

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Abstract

The invention discloses a preparation method for propellant fuel. The preparation method comprises the following steps: uniformly mixing hydrazine or a methyl derivative thereof with a tetrahydrofuransolution of borane to perform a reaction, and after the reaction, performing rotary evaporation on the tetrahydrofuran solution to obtain a first product; adding a first solvent into the first product, then performing washing, and then performing rotary evaporation to remove the first solvent, so as to obtain a hydrazinoborane derivative. According to the method, hydroboration is carried out on ahighly-volatile hydrazine fuel and a methylated derivative of hydrazine, the obtained borohydride of the hydrazine is a colorless non-volatile liquid or a white solid, has no volatility and greatly reduces hazard of the hydrazine fuel, and is a novel aerospace propellant fuel since the ignition delay time of the hydrazine borofluoride is extremely short.

Description

technical field [0001] The invention relates to the technical field of propellants, in particular to a propellant fuel and a preparation method thereof. Background technique [0002] In aerospace and national defense military fields (such as strategic and tactical missiles), propellant is one of the core key technologies. Currently, liquid propellants are still the most widely used propellants in the world. Pyrophoric propellant is the most representative type of liquid propellant. Hydrazine and methylated derivatives of hydrazine are the most commonly used propellant fuels in the world. However, hydrazine compounds are highly volatile, highly toxic and highly carcinogenic, which are very harmful to the environment and human health, and their transportation and storage costs are greatly increased due to their flammability and strong volatility. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/064C01B21/16C07C243/14C06D5/00
CPCC01B21/064C01B21/16C06D5/00C07C243/14
Inventor 靳云鹤张庆华史远通
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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