CL-20-based energetic film spraying material and micro-spraying direct-writing forming method

A CL-20, spraying material technology, applied in the direction of additive processing of mixtures of solid materials and liquid materials, additive processing, coating devices, etc., to achieve the effect of reasonable design, good practical application and promotion value, and rapid preparation

Active Publication Date: 2020-05-19
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The charge amount of MEMS pyrotechnic products is at the milligram level, and the charge size is at the submillimeter level. The traditional pyrotechnic agent formula and charge method are no longer applicable. It is essential to develop an energetic agent formula and charge method that are compatible with the MEMS process. Research hotspots in the field

Method used

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  • CL-20-based energetic film spraying material and micro-spraying direct-writing forming method
  • CL-20-based energetic film spraying material and micro-spraying direct-writing forming method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A CL-20-based energetic film spraying material, including explosive spraying material and binder spraying material, the mass fraction of each component is as follows:

[0035] Explosive spraying materials: CL-20, 17.6 parts; ε-type CL-20 seed crystal, 0.6 parts; adhesion promoter PN-700 (Nanjing Pinning Coupling Agent Co., Ltd.), 0.46 parts; ethyl acetate, 40 parts.

[0036] Binder spraying material: EC (ethyl cellulose), 0.38 parts; GAP (polyazide glycidyl ether), 0.96 parts; ethanol, 40 parts.

[0037] The preparation and molding of this explosive ink comprises the following steps:

[0038] (1) Preparation of raw materials: Weigh the ink raw materials according to the above proportions and prepare them for later use.

[0039] (2) Spraying material configuration: at room temperature, add CL-20 and adhesion promoter PN-700 to ethyl acetate, assist in dissolution under stirring or ultrasound, and add ε-type CL-20 crystal after dissolution is complete Kind, made into ex...

Embodiment 2

[0044] A CL-20-based energetic film spraying material, the mass fraction of each component is: CL-20, 11 parts; ε-type CL-20 seed crystal, 1 part; binder, 1 part; auxiliary agent, 0.5 part; Organic solvent, 86.5 parts.

[0045]Wherein, the binder is a compound of nitrocellulose and fluororubber, and the mass ratio is 1:1.

[0046] The organic solvent is ethyl acetate.

[0047] The additive is a mixture of fluorocarbon surfactant YTY-70 (Shaanxi Yuteng Industrial Co., Ltd.) and leveling agent AKN-1131 (Qianyou Chemical), with a mass ratio of 1:1.

[0048] The preparation and molding of this explosive ink comprises the following steps:

[0049] (1) Preparation of raw materials: Weigh the ink raw materials according to the above proportions and prepare them for later use.

[0050] (2) Spraying material configuration: add each component into an organic solvent at room temperature, and dissolve under the action of stirring or ultrasonic to prepare a micro-spraying material.

[...

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Abstract

The invention discloses a CL-20-based energetic thin film spraying material and a micro-spraying direct-writing forming method thereof. The formula of the spraying material comprises the following components in parts by weight: 5-20 parts of CL-20; 0.5 to 2 parts of a binding agent; 20-48 parts of an organic solvent I; 20-48 parts of an organic solvent II; 0 to 5 parts of CL-20 seed crystal; and 0-2 parts of an auxiliary agent; wherein the forming process parameters are as follows: the spraying material feeding speed is 0.1-1ml / min, the micro-spraying direct-writing speed is 1-100mm / s, the distance between a spray head and a substrate is 20-50mm, the substrate temperature is 20-70 DEG C, and the air inlet pressure is 0.01-0.10 MPa. The formula of the spraying material contains a small amount of superfine epsilon-type CL-20 seed crystals, so that an epsilon-type CL-20-based energetic film is easy to obtain; the spraying material feeding speed is adjustable at 0.1-10 ml / min, the formingspeed is higher than that of an ink-jet printing process, and efficient and rapid preparation of the energetic film can be achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-energy energetic materials, and specifically relates to a CL-20-based energetic film spraying material and a micro-spray direct-writing forming method. Background technique [0002] Micro-Electromechanical System (MEMS) technology has the characteristics of integration, miniaturization, digitization, and intelligence, and has been widely used in many fields. The organic integration of MEMS technology and pyrotechnics has subverted the development model of pyrotechnics and promoted the emergence and development of MEMS pyrotechnics. The charge amount of MEMS pyrotechnic products is at the milligram level, and the charge size is at the submillimeter level. The traditional pyrotechnic agent formula and charge method are no longer applicable. It is essential to develop an energetic agent formula and charge method that are compatible with the MEMS process. research hotspots in the field. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00C06B25/36C06B25/38C06D5/06B29C64/165B29C64/209B29C64/393B33Y30/00B33Y50/02B29L7/00
CPCB29L2007/00B33Y30/00B33Y50/02B29C64/165B29C64/209B29C64/393C06B21/0033C06B25/36C06B25/38C06D5/06
Inventor 安崇伟孔胜叶宝云武碧栋李小东侯聪花王晶禹
Owner ZHONGBEI UNIV
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