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Room-temperature curing propellant

A room temperature curing, propellant technology, applied in the direction of offensive equipment, compressed gas generation, explosives, etc., to achieve the effect of reducing activity, improving mechanical properties, and ensuring mechanical strength

Active Publication Date: 2017-06-13
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test found that using the catalyst Fe(AA) 3 The concentration is only 0.001%, and the pouring time of the propellant cured with octamethylene diisocyanate is only 30 minutes, and the propellant cured with less active toluene diisocyanate can be poured for a little longer, but it is less than 1 hour, and they are completely cured. 7~10d

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0049] The preparation method of room temperature curing propellant of the present invention is as follows:

[0050] After the components in the formula are mixed uniformly according to the specified ratio, it becomes a slurry with good fluidity and leveling properties. The slurry is poured into the charge combustion chamber or a mold with a specified shape, and heated at 20-35°C After curing for 5-7 days under ambient conditions, the desired composite solid propellant product can be obtained.

Embodiment 1

[0052] Table 1 formula composition and process, mechanical properties

[0053]

Embodiment 2

[0055] Table 2 formula composition and process, mechanical properties

[0056]

[0057]

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PUM

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Abstract

The invention relates to a room-temperature curing propellant. The room-temperature curing propellant is prepared from the following components in percentage by mass: 69 to 77% of AP (ammonium perchlorate), 10 to 18% of Al (aluminum) powder, 1 to 5% of plasticizer DOS, 7 to 10% of adhesive HTPB and curing agent, 0.005 to 0.05% of curing catalyst, and 0.2 to 2.0% of network adjusting agent, wherein the network adjusting agent is an alcohol or amine compound with two degrees of functionality, and is one or combination of N-isopropyl alcohol-N-isopropyl ether-aniline, anionic HTPB (hydroxyl-terminated polybutadiene) or N,N'-dihydroxy(diisopropyl)aniline HPA; the curing agent is one or combination of PAPI (polyaryl polymethylene isocyanate), MDI (methylene diphenyl diisocyanate), XDI (xylylene diisocyanate), or TDI (toluene diisocynate). The room-temperature curing propellant has the advantages that the propellant with effective solid content of more than 85% is mixed and cast at the temperature of 20 to 35 DEG C, and can reach a curing point within 7d after curing; the normal-temperature mechanical strength can reach 0.85MPa or above, and the elongation rate is more than 35%.

Description

technical field [0001] The invention relates to a room-temperature curing propellant, which belongs to the field of composite solid motors and composite solid propellants. Background technique [0002] Solid propellant is the basic component of solid motor, and its mass accounts for 90% or more of the total mass of the motor. Due to the advantages of easy-to-obtain raw materials, low viscosity, good process, mechanical properties and storage performance, and low price, butyl-hydroxyl propellant is the composite solid propellant mainly used in large-scale boosters and missile engines in various countries in the world, such as France Ali An-5, Japan's Miao-5, American Taurus launch vehicle motor, and China's large strategic solid rocket motor. At the same time, because the curing agent isophorone diisocyanate (IPDI) and toluene diisocyanate (TDI) have good compatibility with the hydroxyl-terminated polybutadiene (HTPB) adhesive, and the mechanical properties and storage perfo...

Claims

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Application Information

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IPC IPC(8): C06D5/06C06B33/06
CPCC06B33/06C06D5/06
Inventor 涂善刘学胡期伟郭滢泷毛羽丁温霞李爽袁庆贾方娜王爱梅
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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