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Hyperbranched high-strength energetic compound

A technology of hyperbranched polymers and composites, applied in the field of hyperbranched high-strength energetic composites, can solve problems such as weak mechanical strength, achieve the effect of enhancing interface interaction and improving interface compatibility

Active Publication Date: 2019-02-22
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hyperbranched high-strength energetic compound for improving the technical problem of weak mechanical strength

Method used

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  • Hyperbranched high-strength energetic compound

Examples

Experimental program
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Effect test

Embodiment 1

[0030] as attached figure 1 As shown, the specific steps are as follows:

[0031] Step 1: Use hydrochloric acid to adjust the pH value of 1L buffered aqueous solution to 8.5, add 1g of dopamine hydrochloride, and add 100g of energetic crystal 1,3,5-triamino-2,4,6-trinitrobenzene, using 450rpm After mechanical stirring at a rotating speed for 6 hours, suction filtration, washing, and drying were performed to obtain pretreated explosives;

[0032] Step 2: Vacuum the above explosive at 80°C for 30 minutes, add it to 500 g of butyl acetate, ultrasonicate for 1 min to form a suspension, add 0.4 g of toluene diisocyanate and 0.2 g of dibutyltin dilaurate, stir mechanically for 1 h, filter, and wash with acetic acid Butyl ester was washed 4 times, and the whole process was carried out under the condition of 60°C water bath and 400rpm; then the explosive was moved to 500g of acetone, 0.4g of aliphatic hyperbranched polyester H204 and 0.2g of dibutyltin dilaurate were added, and mecha...

Embodiment 2

[0036] Step 1: Use hydrochloric acid to adjust the pH value of 1L buffered aqueous solution to 8.5, add 1g of dopamine hydrochloride, and add 100g of energetic crystal 1,3,5-triamino-2,4,6-trinitrobenzene, using 450rpm After mechanical stirring at a rotating speed for 6 hours, suction filtration, washing, and drying were performed to obtain pretreated explosives;

[0037]Step 2: Vacuum the above explosive at 80°C for 30 minutes, add it to 500 g of butyl acetate, ultrasonicate for 1 minute to form a suspension, add 0.6 g of toluene diisocyanate and 0.3 g of dibutyltin dilaurate, stir mechanically for 1 hour, filter, and wash with acetic acid Butyl ester was washed 4 times, and the whole process was carried out under the conditions of 60°C water bath and 400rpm rotation speed; then the explosive was moved to 500g of acetone, 0.6g of aliphatic hyperbranched polyester H204 and 0.3g of dibutyltin dilaurate were added, and mechanically stirred for 1h , filtered, washed with acetone ...

Embodiment 3

[0041] Step 1: Use hydrochloric acid to adjust the pH value of 1L buffered aqueous solution to 8.5, add 1g of dopamine hydrochloride, and add 100g of energetic crystal 1,3,5-triamino-2,4,6-trinitrobenzene, using 450rpm After mechanical stirring at a rotating speed for 6 hours, suction filtration, washing, and drying were performed to obtain pretreated explosives;

[0042] Step 2: Vacuum the above explosive at 80°C for 30 minutes, add it to 500 g of butyl acetate, ultrasonicate for 1 minute to form a suspension, add 0.6 g of toluene diisocyanate and 0.3 g of dibutyltin dilaurate, stir mechanically for 1 hour, filter, and wash with acetic acid Butyl ester was washed 4 times, and the whole process was carried out under the conditions of 60°C water bath and 400rpm rotation speed; then the explosive was moved to 500g of acetone, 0.6g of aromatic hyperbranched polyester H304 and 0.3g of dibutyltin dilaurate were added, and mechanically stirred for 1h , filtered, washed with acetone ...

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Abstract

The invention discloses a hyperbranched high-strength energetic compound which is composed of an energetic crystal 1,3,5-triamido-2,4,6-trinitrobenzene, a hyperbranched polymer and a polymer binder. The invention further provides a preparation method of the hyperbranched high-strength energetic compound. The explosive crystal / hyperbranched polyester energetic compound disclosed by the invention has the compressive fracture strength of more than 34MPa and the Brazilian split strength of more than 8MPa, is an energetic compound with high mechanical strength, and has important application prospects for improving the comprehensive environmental adaptability of the charge.

Description

technical field [0001] The invention belongs to the field of composite energetic materials and relates to a hyperbranched high-strength energetic composite reinforced by hyperbranched polymers. Background technique [0002] The energetic complex is formed by highly filling explosive crystals in a polymer binder matrix. In practical applications, the interface between energetic crystals and polymer binders is weak, and damage often occurs in the interface region between the two. Changing the surface properties of the crystal can directly improve the interface interaction with the adhesive, thereby improving the mechanical strength of the energetic composite. In the literature (Cent.Eur.J.Energ.Mater., 2017,4,788-805), it is reported that 1,3,5-triamino-2,4,6-trinitro After the benzene crystals are pretreated, they are re-granulated and pressed, and the obtained energetic compression fracture strength can reach 29.2MPa, and the Brazilian splitting strength can reach 7.1MPa, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B45/24C06B25/04C06B21/00
CPCC06B21/0066C06B25/04C06B45/24
Inventor 曾诚成巩飞艳刘佳辉潘丽萍张建虎杨志剑
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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