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a polycarbonate-alh 3 Double-shell composite, preparation method and application

A technology of polycarbonate and composites, 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, and achieve the effect of improving thermal stability and making the preparation method safe and reliable

Active Publication Date: 2022-03-15
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • a polycarbonate-alh <sub>3</sub> Double-shell composite, preparation method and application
  • a polycarbonate-alh <sub>3</sub> Double-shell composite, preparation method and application
  • a polycarbonate-alh <sub>3</sub> Double-shell composite, preparation method and application

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preparation example Construction

[0031] In order to further improve the high α-AlH on the basis of pickling passivation 3 Thermal stability, the present invention provides a kind of α-AlH 3 / Al 2 o 3 / PC double shell structure complex and its synthesis method.

[0032] In order to achieve the above object, a kind of α-AlH provided by the present invention 3 / Al 2 o 3 The synthetic method of the double-shell structure compound of / PC comprises the following steps:

[0033] (1) Obtain α-AlH by pickling 3 / Al 2 o 3 :

[0034] First, configure a dilute acid solution with a volume fraction of 10%; second, take a certain amount of synthesized α-AlH 3 Add it into dilute acid solution and stir for a certain period of time, filter and wash with volatile organic solvent for 3 times, and finally freeze-dry to obtain off-white powder sample.

[0035] (2)α-AlH 3 / Al 2 o 3 Preparation of / PC double-shell structure composite

[0036] First, take 200mg PC dispersed in chloroform solvent, stir to dissolve; then...

Embodiment 1

[0044] (1) Obtain α-AlH by pickling 3 / Al 2 o 3

[0045] First, configure a dilute hydrochloric acid solution with a volume fraction of 10%; secondly, take a certain amount of synthesized α-AlH 3 Add dilute hydrochloric acid solution and stir for 5 minutes, filter and wash with ethanol three times, and finally freeze-dry to obtain off-white powder sample.

[0046] (2)α-AlH 3 / Al 2 o 3 Preparation of / PC double-shell structure composite

[0047] First, disperse 80mg of polycarbonate in chloroform solvent, stir and dissolve; then take 300mg of α-AlH 3 / Al 2 o 3 Add it, stir and disperse for 6h, filter and wash 3 times with chloroform, and finally freeze-dry to obtain off-white powder sample.

[0048] The α-AlH that embodiment 1 prepares 3 / Al 2 o 3 Characterization of the structure and thermal stability of / PC double-shell structure composites:

[0049] α-AlH 3 / Al 2 o 3 SEM image of / PC double-shell structure composite image 3 As shown, the morphology of the ...

Embodiment 2

[0054] (1) Obtain α-AlH by pickling 3 / Al 2 o 3

[0055] First, configure a dilute hydrochloric acid solution with a volume fraction of 5%; secondly, take a certain amount of synthesized α-AlH 3 Add dilute hydrochloric acid solution and stir for 5 minutes, filter and wash with ethanol three times, and finally freeze-dry to obtain off-white powder sample.

[0056] (2)α-AlH 3 / Al 2 o 3 Preparation of / PC double-shell structure composite

[0057] First, take 200mg of polycarbonate and disperse it in chloroform solvent, stir and dissolve; then take 300mg of α-AlH 3 / Al 2 o 3 Add it, stir and disperse for 6h, filter and wash 3 times with chloroform, and finally freeze-dry to obtain off-white powder sample.

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Abstract

The invention discloses a polycarbonate-AlH 3 Double-shell composites, methods of preparation and applications, polycarbonate‑AlH 3 Double-shell structure composite, from inside to outside, the composite includes an inner core, a first shell wrapping the inner core, and a second shell wrapping the first shell; the inner core is α‑AlH 3 core, the first shell is Al 2 o 3 layer, and the second shell layer is a polycarbonate layer. with α‑AlH obtained by the pickling method 3 / Al 2 o 3 In contrast, the double-shell structure composite α-AlH synthesized by this method 3 / Al 2 o 3 The thermal stability of / PC is significantly improved.

Description

technical field [0001] The present invention relates to a kind of polycarbonate-AlH 3 Double-shell composite, preparation method and application, the double-shell structure can significantly improve α-AlH 3 thermal stability. Background technique [0002] The introduction of hydrogen during the combustion of solid propellants can effectively reduce the average relative molecular mass of the gas; at the same time, the high combustion calorific value of hydrogen helps to increase the temperature of the combustion chamber and increase the specific impulse. Aluminum hydride is a light metal hydride with a 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, With higher combustion calorific value, it is an ideal solid propellant fuel. Currently, AlH 3 There are a total of 7 different crystal forms including: α, α′, β, γ, δ, ε, and ζ. Among...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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