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GAP propellant preparation method for laser micropropulsion

A propellant and micro-propulsion technology, which is used in offensive equipment, compressed gas generation, non-explosive/non-thermal composition, etc., and can solve problems such as affecting ablation efficiency, wasting laser energy, and excessive porosity.

Inactive Publication Date: 2018-10-02
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above-mentioned target ablation materials have not systematically studied the compactness of the ablation materials. In the experiment, the impact of the compactness of the target ablation materials on the ablation effect and ablation performance cannot be ignored, and the porosity is too large. It will cause waste of laser energy and affect the ablation efficiency. Therefore, it is very important to improve the density of the ablation layer and reduce its porosity

Method used

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  • GAP propellant preparation method for laser micropropulsion
  • GAP propellant preparation method for laser micropropulsion
  • GAP propellant preparation method for laser micropropulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, the vacuum oven model used is DZF-6030 of Shanghai Jinghong Experimental Equipment Co., Ltd., the GAP used was purchased from Henan Luoyang Liming Chemical Co., Ltd., and the nano C powder used (product number C109965 | CAS number 7440-44-0 |purity 99.5%|particle size 30nm), IPDI (product number I109582|CAS number 4098-71-9|purity 99%), TPB (product number T111431|CAS number 603-33-8|purity 98%), DBTDL ( Product No. D100274|CAS No. 77-58-7|purity 95%) and resorcinol (product No. R111662|CAS No. 108-46-3|AR purity 99%) were purchased from Aladdin Industries, USA;

[0033] Step Ⅰ: Pour the GAP solution into a polytetrafluoroethylene petri dish with a diameter of 20 cm, and spread it flat. Dry in a vacuum oven for 24 hours, and the temperature of the oven is kept at 60°C. At the same time, in order to prevent moisture from entering the GAP, a silica gel desiccant was added to the oven to obtain a dehydrated GAP solution;

[0034] Step II: Mix 10.0 g o...

Embodiment 2

[0042] In this embodiment, the vacuum oven model used is DZF-6030 of Shanghai Jinghong Experimental Equipment Co., Ltd., the GAP used was purchased from Henan Luoyang Liming Chemical Co., Ltd., and the nano C powder used (product number C109965 | CAS number 7440-44-0 |purity 99.5%|particle size 30nm), IPDI (product number I109582|CAS number 4098-71-9|purity 99%), TPB (product number T111431|CAS number 603-33-8|purity 98%), DBTDL ( Product No. D100274|CAS No. 77-58-7|purity 95%) and resorcinol (product No. R111662|CAS No. 108-46-3|AR purity 99%) were purchased from Aladdin Industries, USA;

[0043] Step Ⅰ: Pour the GAP solution into a polytetrafluoroethylene petri dish with a diameter of 20 cm, and spread it flat. Dry in a vacuum oven for 24 hours, and the temperature of the oven is kept at 60°C. At the same time, in order to prevent moisture from entering the GAP, a silica gel desiccant was added to the oven to obtain a dehydrated GAP solution;

[0044] Step II: Mix 10.0 g o...

Embodiment 3

[0052] In this embodiment, the vacuum oven model used is DZF-6030 of Shanghai Jinghong Experimental Equipment Co., Ltd., the GAP used was purchased from Henan Luoyang Liming Chemical Co., Ltd., and the nano C powder used (product number C109965 | CAS number 7440-44-0 |purity 99.5%|particle size 30nm), IPDI (product number I109582|CAS number 4098-71-9|purity 99%), TPB (product number T111431|CAS number 603-33-8|purity 98%), DBTDL ( Product No. D100274|CAS No. 77-58-7|purity 95%) and resorcinol (product No. R111662|CAS No. 108-46-3|AR purity 99%) were purchased from Aladdin Industries, USA;

[0053] Step Ⅰ: Pour the GAP solution into a polytetrafluoroethylene petri dish with a diameter of 20 cm, and spread it flat. Dry in a vacuum oven for 24 hours, and the temperature of the oven is kept at 60°C. At the same time, in order to prevent moisture from entering the GAP, a silica gel desiccant was added to the oven to obtain a dehydrated GAP solution;

[0054] Step II: Mix 10.0 g o...

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Abstract

The invention relates to the field of laser micropropulsion of a solid ablation mode, and provides a high-viscosity mixed propellant taking hydroxyl terminated glycidyl azide polymer (GAP) as the mainingredient. The preparation method comprises the following steps that a GAP solution is subjected to pretreatment; at 60 DEG C, nanometer carbon powder, centralite, a curing agent and a curing catalyst are added in sequence, and stirring is conducted in each step; finally, on the condition that the temperature is 60 DEG C, and the vacuum degree is 0.01 MPa, vacuum bubble pumping is conducted for1-1.5 h, standing and curing are conducted, and then a GAP grain is obtained. The operation method is simple and easy to implement, the curing process is mild, and the porosity in GAP mixed propellantcolloid is effectively lowered.

Description

technical field [0001] The invention belongs to the technical field of laser solid ablation micro-propulsion, and in particular relates to a preparation method of GAP propellant for laser micro-propulsion. Background technique [0002] Laser propulsion technology is a new type of propulsion technology based on the principle of intense laser-matter interaction. According to the working mode, laser micro-thrusters can be divided into transmissive and reflective, and transmissive is the focus of current research. The transmissive target material is composed of a base layer and an ablation layer. The density of the ablation layer has a great influence on the propulsion efficiency and the accuracy of the later test, which puts forward relatively high requirements for the formulation of the ablation layer. [0003] At present, the research on the formulation of solid energetic working medium is relatively extensive, among which GAP (hydroxyl-terminated polyazide glycidyl ether) i...

Claims

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Application Information

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IPC IPC(8): C06B23/00C06D5/00C06B43/00
CPCC06B23/00C06B43/00C06D5/00
Inventor 吴立志吴修伟张天杰郭宁马志朋
Owner NANJING UNIV OF SCI & TECH
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