Metal hydride in situ polymerization and cladding passivation method

An in-situ polymerization and hydride technology, which is applied in the directions of non-explosive phlegmatizers/passivators, non-explosive/non-thermal components, offensive equipment, etc. The influence of the layer on the energy characteristics of metal hydrides, etc., to achieve the effect of good compatibility and good stability

Active Publication Date: 2017-08-08
河南纳宇新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cladding layer used in this method is a non-energetic cladding layer, and the metal hydride is passivated by such a non-energetic cladding layer. Although the purpose of passivating the metal hydride is achieved, at the same time Also reduces the high-energy properties of metal hydrides when used as high-energy addi...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A metal hydride in-situ polymerization coating passivation method, the metal hydride is AlH 3 , CeH 3-4 , LiH or NaH, including the following steps: (1) Take the copolyether (BAMO-THF copolyether) of 3,3-diazidomethyloxybutane and tetrahydrofuran (BAMO-THF copolyether) and curing agent and dissolve them in anhydrous ethyl acetate to prepare Dilute solution; wherein, the curing agent is isophorone diisocyanate, the number average molecular weight of BAMO-THF copolyether is 3000, and the molar ratio of 3,3-diazidomethyloxybutane to tetrahydrofuran in BAMO-THF copolyether 0.8︰1.2, the mass volume ratio of BAMO-THF copolyether to anhydrous ethyl acetate is 1.5g︰100mL, the mass volume ratio of curing agent to anhydrous ethyl acetate is 0.4g︰100mL; Put the particles in the dilute solution, the mass volume ratio of the metal hydride to the dilute solution is: 100g: 100mL, ultrasonically disperse for 0.3h, and form a milky white suspension; (3) heat up to 30°C while stirring, ...

Embodiment 2

[0025] A metal hydride in-situ polymerization coating passivation method, the metal hydride is AlH 3 , CeH 3-4 , LiH or NaH, including the following steps: (1) Take the copolyether (BAMO-THF copolyether) of 3,3-diazidomethyloxybutane and tetrahydrofuran (BAMO-THF copolyether) and curing agent and dissolve them in anhydrous ethyl acetate to prepare Dilute solution; Wherein, curing agent is toluene diisocyanate, and the number-average molecular weight of BAMO-THF copolyether is 6000, and the mol ratio of 3,3-diazidomethyloxybutane and tetrahydrofuran in BAMO-THF copolyether is 1.4: 1.2. The mass volume ratio of BAMO-THF copolyether to anhydrous ethyl acetate is 3g︰100mL, and the mass volume ratio of curing agent to anhydrous ethyl acetate is 0.9g︰100mL; (2) Take the metal hydride particles in In the dilute solution, the mass-volume ratio of the metal hydride to the dilute solution is: 100g: 120mL, ultrasonically disperse for 1 hour, and form a milky white suspension; (3) heat u...

Embodiment 3

[0027]A metal hydride in-situ polymerization coating passivation method, the metal hydride is AlH 3 , CeH 3-4 , LiH or NaH, comprising the following steps: (1) dissolving the copolyether of 3,3-diazidomethyloxybutane and tetrahydrofuran and a curing agent in anhydrous ethyl acetate to prepare a dilute solution; wherein, the curing agent It is 4,4-diphenylmethane diisocyanate, the number average molecular weight of BAMO-THF copolyether is 4000, and the molar ratio of 3,3-diazidomethyloxybutane to tetrahydrofuran in BAMO-THF copolyether is 1 ︰1.2, the mass volume ratio of BAMO-THF copolyether to anhydrous ethyl acetate is 2.5g︰100mL, the mass volume ratio of curing agent to anhydrous ethyl acetate is 0.6g︰100mL; (2) Take metal hydride particles Put in dilute solution, the mass volume ratio of metal hydride to dilute solution is: 100g︰110mL, ultrasonically disperse for 0.5h to form a milky white suspension; (3) heat up to 40°C while stirring, stir for 3h, after the reaction is o...

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PUM

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Abstract

The invention discloses a metal hydride in situ polymerization and cladding passivation method, and is characterized by comprising the following steps: (1) dissolving 3,3-diazido methyloxetane and tetrahydrofuran (BAMO-THF) copolyether and a curing agent into anhydrous ethyl acetate, and preparing into a dilute solution; (2) putting metal hydride into the dilute solution and performing ultrasonic dispersion to form suspension liquid; (3) stirring and warming to the temperature of 40 to 60 DEG C, stirring for reaction, and recycling the solvent ethyl acetate by evaporation after the reaction is ended; (4) a product obtained after the solvent is removed completely by evaporation is dried and cured in a drying oven, so as to obtain the clad passivated metal hydride. According to the metal hydride in situ polymerization and cladding passivation method provided by the invention, the BAMO-THF copolyether is used for in situ polymerization and cladding of the metal hydride, and the treated and obtained metal hydride is insensitive to water in air. The own energy performance of the metal hydride is not affected while passivating the metal hydride.

Description

technical field [0001] The invention relates to a metal hydride in-situ polymerization coating passivation method, which specifically belongs to the technical field of energetic material safety protection. Background technique [0002] Metal hydrides, also known as salt-type hydrides, are binary compounds formed by the direct combination of active alkali metals and hydrogen. The general chemical formula is MH, where M is any one of alkali metal elements such as Li, Na, and Al. . Compared with other hydrogen storage methods, metal hydride has the advantages of high hydrogen storage density, stable pressure and simple hydrogen charging. The hydrogen storage density of metal hydride per unit volume can reach 1000 times that of gaseous hydrogen under the same temperature and pressure conditions. Because metal hydrides have the advantage of high hydrogen storage density, they are used as high-energy additives in rocket solid propellants to further increase the energy specific im...

Claims

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Application Information

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IPC IPC(8): C06B23/00C06B27/00
CPCC06B23/005C06B27/00
Inventor 刘吉平李树磊任明安王栋李守良韩佳苏岩
Owner 河南纳宇新材料有限公司
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