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Polycarbonate-AlH3 double-shell-layer compound and preparation method and application thereof

A technology of polycarbonate and compound, which is applied in the direction of offensive equipment, explosive processing equipment, non-explosive/non-thermal agent components, etc., can solve problems such as decomposition phenomena, achieve the effect of improving thermal stability and making the preparation method safe and reliable

Active Publication Date: 2020-12-25
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently α-AlH 3 Applied to solid propellants, it is also necessary to solve the decomposition phenomenon in the range of room temperature and solid propellant process temperature

Method used

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  • Polycarbonate-AlH3 double-shell-layer compound and preparation method and application thereof
  • Polycarbonate-AlH3 double-shell-layer compound and preparation method and application thereof
  • Polycarbonate-AlH3 double-shell-layer compound and preparation method and application thereof

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preparation example Construction

[0031]In order to further improve the high α-AlH on the basis of pickling passivation3Thermal stability, the present invention provides a kind of α-AlH3 / Al2O3 / PC double shell structure compound and its synthesis method.

[0032]In order to achieve the above objective, the present invention provides an α-AlH3 / Al2O3The synthesis method of the double-shell structure composite of / PC includes the following steps:

[0033](1) Obtain α-AlH by pickling3 / Al2O3:

[0034]First, prepare a 10% dilute acid solution; secondly, take a certain amount of synthesized α-AlH3Add the dilute acid solution and stir for a certain period of time, filter and wash with a volatile organic solvent 3 times, and finally freeze-dry to obtain an off-white powder sample.

[0035](2)α-AlH3 / Al2O3 / PC double-shell structure composite

[0036]First, disperse 200 mg of PC in the chloroform solvent, stir to dissolve; then take 300 mg of α-AlH3 / Al2O3Add to it, stir and disperse for 4h-12h, filter and wash with chloroform 3 times, and fina...

Embodiment 1

[0044](1) Obtain α-AlH by pickling3 / Al2O3

[0045]First, prepare a 10% dilute hydrochloric acid solution; secondly, take a certain amount of synthesized α-AlH3Add the diluted hydrochloric acid solution and stir for 5 minutes, filter and wash with ethanol 3 times, and finally freeze-dry to obtain an off-white powder sample.

[0046](2)α-AlH3 / Al2O3 / PC double-shell structure composite

[0047]First, disperse 80 mg of polycarbonate in the chloroform solvent and stir to dissolve; then take 300 mg of α-AlH3 / Al2O3Add to it, stir and disperse for 6 hours, filter and wash with chloroform 3 times, and finally freeze-dry to obtain an off-white powder sample.

[0048]The α-AlH prepared in Example 13 / Al2O3Characterization of structure and thermal stability of / PC double-shell structure composite:

[0049]α-AlH3 / Al2O3 / PC double-shell structure composite SEM image such asimage 3 As shown, the morphology of the composite is massive particles, indicating that the α-AlH3The morphology has not changed. The thermal s...

Embodiment 2

[0054](1) Obtain α-AlH by pickling3 / Al2O3

[0055]First, prepare a 5% dilute hydrochloric acid solution; secondly, take a certain amount of synthesized α-AlH3Add the diluted hydrochloric acid solution and stir for 5 minutes, filter and wash with ethanol 3 times, and finally freeze-dry to obtain an off-white powder sample.

[0056](2)α-AlH3 / Al2O3 / PC double-shell structure composite

[0057]First, disperse 200 mg of polycarbonate in the chloroform solvent, stir to dissolve; then take 300 mg of α-AlH3 / Al2O3Add to it, stir and disperse for 6 hours, filter and wash with chloroform 3 times, and finally freeze-dry to obtain an off-white powder sample.

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Abstract

The invention discloses a polycarbonate-AlH3 double-shell-layer compound and a preparation method and application thereof. The polycarbonate AlH3 double-shell-layer structure compound comprises an inner core, a first shell layer wrapping the inner core, and a second shell layer wrapping the first shell layer from inside to outside. The inner core is an alpha-AlH3 core, the first shell layer is anAl2O3 layer, and the second shell layer is a polycarbonate layer. Compared with alpha-AlH3 / Al2O3 obtained through an acid pickling method, the thermal stability of the double-shell-layer structure compound alpha-AlH3 / Al2O3 / PC synthesized through the method is remarkably improved.

Description

Technical field[0001]The invention relates to a polycarbonate-AlH3Double-shell composite, preparation method and application, the double-shell structure can significantly improve α-AlH3The thermal stability performance.Background technique[0002]Introducing hydrogen into the combustion process of solid propellant can effectively reduce the average relative molecular mass of fuel gas; at the same time, the high combustion heat value of hydrogen helps to increase the temperature of the combustion chamber and increase the specific impulse. Aluminum trihydride is a light metal hydride with relatively high hydrogen content, with a hydrogen content of 10.08% and a hydrogen storage density of 148g / L, which is twice that of liquid hydrogen (70.8g / L). Compared with aluminum powder, It has a higher calorific value of combustion and is an ideal solid propellant fuel. Currently, AlH3There are a total of 7 different crystal forms including: α, α', β, γ, δ, ε, and ζ. Among them, the thermodynamic ...

Claims

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Application Information

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IPC IPC(8): C06D5/06C06B43/00C06B45/30C06B21/00C06B23/00
CPCC06D5/06C06B43/00C06B45/30C06B21/0091C06B23/006
Inventor 蒋周峰赵凤起安亭李辉杨燕京张明张建侃李娜姜一帆
Owner XIAN MODERN CHEM RES INST
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