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Method for grafting energetic macromolecules on surface of 1,3,5-triamido-1,3,5-trinitrobenzene crystal powder

A technology of crystal powder and trinitrobenzene, which is applied in the direction of nitration explosive components, explosives, offensive equipment, etc., and can solve the problem of not having grafting reactivity

Inactive Publication Date: 2018-07-06
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, significantly different from inorganic materials such as aluminum powder, 1,3,5-triamino-1,3,5-trinitrobenzene crystals have extremely strong intramolecular and molecular bond hydrogen bonds, and the crystal surface The amino group has basically no grafting reactivity

Method used

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  • Method for grafting energetic macromolecules on surface of 1,3,5-triamido-1,3,5-trinitrobenzene crystal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The method for grafting energetic polymers on the surface of 1,3,5-triamino-1,3,5-trinitrobenzene crystal powder comprises the following steps:

[0031] (1) Add 100 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder with an average particle size of 5 μm into an aqueous solution of dopamine with a volume of 1 L and a pH of about 8.5 (where dopamine salt The concentration of acid salt is 0.5g / L), after mechanically stirring for 6h, filter with suction, blow dry with inert gas such as nitrogen or argon;

[0032] (2) Add 50 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder obtained in step (1) into 1000 g of butyl acetate and mechanically stir to disperse, add 5.0 g of toluene di Isocyanate and 1.0 g of dibutyltin dilaurate, reflux at 65°C for 2 hours, filter with suction, and wash with butyl acetate three times;

[0033] (3) 30 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder obtained in step (2) is added to 600 g of buty...

Embodiment 2

[0036] The method for grafting energetic polymers on the surface of 1,3,5-triamino-1,3,5-trinitrobenzene crystal powder comprises the following steps:

[0037] (1) Add 100 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder with an average particle size of 30 μm into an aqueous solution of dopamine with a volume of 1 L and a pH of about 8.5 (where dopamine salt The concentration of acid salt is 2g / L), after mechanically stirring for 6h, filter with suction, blow dry with inert gas such as nitrogen or argon;

[0038](2) Add 50 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder obtained in step (1) into 500 g of butyl acetate and mechanically stir to disperse, add 2.5 g of toluene di Isocyanate and 0.25g dibutyltin dilaurate, reflux at 55°C for 2h, filter with suction, and wash 5 times with butyl acetate;

[0039] (3) 10g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder obtained in step (2) is added to 100g butyl acetate and mechan...

Embodiment 3

[0041] The method for grafting energetic polymers on the surface of 1,3,5-triamino-1,3,5-trinitrobenzene crystal powder comprises the following steps:

[0042] (1) Add 200 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder with an average particle size of 15 μm into a 2 L dopamine aqueous solution with a pH of about 8.5 (where dopamine salt The concentration of acid salt is 1.0g / L), after mechanically stirring for 6h, filter with suction, blow dry with inert gas such as nitrogen or argon;

[0043] (2) Add 100 g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder obtained in step (1) into 1500 g of butyl acetate and mechanically stir to disperse, add 6.7 g of toluene di Isocyanate and 0.9g of dibutyltin dilaurate, reflux at 55°C for 2h, filter with suction, and wash with butyl acetate three times;

[0044] (3) 45g of 1,3,5-triamino-1,3,5-trinitrobenzene explosive crystal powder obtained in step (2) is added to 675g butyl acetate for mechanical stir...

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Abstract

The invention discloses a method for grafting energetic macromolecules on the surface of 1,3,5-triamido-1,3,5-trinitrobenzene crystal powder. The method comprises the following steps: (1) adding 1,3,5-triamido-1,3,5-trinitrobenzene explosive crystal powder into a dopamine water solution for mechanical stirring, carrying out suction filtration, and drying with inert gas; (2) adding the explosive crystal powder into butyl acetate for mechanical stirring dispersion, then adding toluene diisocynate and dibutyltin dilaurate, carrying out backflow suction filtration, and washing with butyl acetate for three to five times; and (3) adding the explosive crystal powder into butyl acetate for mechanical stirring dispersion, then adding glycidyl azide polymer and dibutyltin dilaurate, carrying out backflow suction filtration, and washing with butyl acetate for three to five times, and carrying out vacuum drying. The invention provides a simple and efficient explosive crystal surface modification new technique, and technical support can be provided for the application of explosive crystals in compound explosives.

Description

technical field [0001] The invention relates to a surface treatment method for explosive crystal powder, in particular to a method for grafting energetic polymers on the surface of 1,3,5-triamino-1,3,5-trinitrobenzene crystal powder, which belongs to energetic field of composite materials. Background technique [0002] 1,3,5-triamino-1,3,5-trinitrobenzene crystal is a typical insensitive energetic crystal material, which has important applications in insensitive charges. In practical applications, 1,3,5-triamino-1,3,5-trinitrobenzene crystal powder is mixed with polymer binder materials to make polymer bonded explosives. Since the crystal surface of 1,3,5-triamino-1,3,5-trinitrobenzene is hydrophilic, and the polymer binder material usually used is of low polarity, 1,3,5- Triamino-1,3,5-trinitrobenzene crystals have poor compatibility with polymer binder materials, which is not conducive to the comprehensive performance of polymer bonded explosives. [0003] The propertie...

Claims

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Application Information

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IPC IPC(8): C08G65/333C06B25/00
CPCC06B25/00C08G65/33389
Inventor 巩飞艳杨志剑潘丽萍曾诚成张建虎
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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