A kind of curing system and solid propellant containing the curing system and preparation method

A technology of solid propellant and solidification catalyst, which is applied in attack equipment, compressed gas generation, explosive processing equipment, etc., can solve the problems of low propellant energy and mechanical properties, restrict the application of propellant, etc., and achieve controllable reaction rate, High curing reactivity and good compatibility

Active Publication Date: 2021-04-13
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The relatively mature application of non-isocyanate curing system at home and abroad is the butyl carboxyl propellant. The reaction principle is mainly to use the active hydrogen of the carboxyl group to react with the epoxy or aziridine group. The curing process has the advantage of not being affected by moisture, but the propellant The energy and mechanical properties are low, which restricts the application of propellants

Method used

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  • A kind of curing system and solid propellant containing the curing system and preparation method
  • A kind of curing system and solid propellant containing the curing system and preparation method
  • A kind of curing system and solid propellant containing the curing system and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] (1) Propellant formula composition (mass percentage %):

[0059]

[0060] 3, the preparation method of chromium diisopropyl salicylate, the step of this method comprises:

[0061] In the first step, a 1000mL four-necked flask is equipped with a mechanical stirrer, a condenser, and a thermometer, and 50.0g of chromium trioxide, 250mL of distilled water, and 100mL of acetic acid are added to the four-necked flask. Slowly add 80 mL of anhydrous methanol dropwise to the dropping funnel, heat to 60-65°C and start to reflux until the solution turns dark green. The solvent was removed by rotary evaporation to obtain crude chromium acetate, which was dissolved in 500 mL of anhydrous methanol, filtered, the filtrate was rotary evaporated under reduced pressure to remove the solvent, and dried to obtain 128 g of chromium acetate product.

[0062] In the second step, a 500mL four-necked flask is equipped with a mechanical stirrer, a condenser, and a thermometer. Add 50.0g of c...

Embodiment 2

[0068] (1) Propellant formula composition (mass percentage %):

[0069]

[0070] (2) Curing conditions and mechanical properties:

[0071] Curing time 120h, curing temperature 50°C

[0072] Theoretical standard specific impulse: 2634.3N.s / kg

[0073] Mechanical properties: Maximum tensile strength σ at 20°C m =0.63MPa, maximum elongation ε m =56.9%; Maximum elongation at 70°C ε m =39.9%, the maximum elongation at -40°C ε m = 44.6%.

Embodiment 3

[0075] (1) Propellant formula composition (mass percentage %):

[0076]

[0077] (2) Curing conditions and mechanical properties:

[0078] Curing time 72h, curing temperature 45°C

[0079] Theoretical standard specific impulse: 2583.9N.s / kg

[0080] Mechanical properties: Maximum tensile strength σ at 20°C m =0.71MPa, maximum elongation ε m =47.9%; Maximum elongation at 70°C ε m =41.2%, the maximum elongation at -40°C ε m = 48.5%.

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Abstract

The invention relates to a curing system, a solid propellant containing the curing system and a preparation method, and belongs to the technical field of solid propellant preparation. The curing process of the curing system is not affected by moisture, which can reduce the influence of environmental humidity and raw material moisture on the performance of the propellant, which is conducive to improving the performance stability and reliability of the propellant; and the curing system also has high curing reactivity and high reaction rate. Controllable, good chemical compatibility with high-energy components such as nitrate plasticizers, and excellent mechanical properties.

Description

technical field [0001] The invention relates to a curing system, a solid propellant containing the curing system and a preparation method, and belongs to the technical field of solid propellant preparation. Background technique [0002] Advanced solid propellant technology is the core key technology of advanced strategic and tactical missile weapons and equipment, which directly determines the performance level of the missile weapon power system. With the complex and changeable battlefield environment and the diversification of war forms, the requirements for high reliability of weapon systems in future wars will continue to upgrade. Stronger environmental adaptability and more stable and reliable performance are bound to be important trends in the development of propellant technology in the future. It can be expected that more and more attention will be paid to getting rid of the influence of environmental factors on the manufacture, storage and use of missile weapons. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06D5/06C06B23/00C06B33/14C06B33/12C06B33/06C06B33/08C06B33/04C06B21/00
Inventor 李伟汪越苏冬尹欣梅潘新洲王小英唐泉
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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