Low-melting-point thermoplastic propellant and preparation method thereof

A propellant and thermoplastic technology, which is applied in the field of low-melting thermoplastic propellant and its preparation, can solve the problems of increasing the risk of mixing temperature, which is not conducive to the large-scale continuous production process of thermoplastic propellant, and achieves the reduction of process difficulty and low cost , Excellent process performance

Active Publication Date: 2017-04-26
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High mixing temperature increases the degree of danger during process implementation, which is not

Method used

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  • Low-melting-point thermoplastic propellant and preparation method thereof
  • Low-melting-point thermoplastic propellant and preparation method thereof
  • Low-melting-point thermoplastic propellant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The modified plastic grease 1 shown in Table 1 was used to prepare a propellant according to the composition formula 1 shown in Table 2, and the properties of the obtained propellant are shown in Table 3.

[0031] Table 1 Modified plastic grease 1

[0032] project Adhesive properties Melting point (°C) 75～80 Molecular weight (Mn) 200～400 Minimum initial decomposition temperature (°C) 210

[0033] Table 2 Low melting point thermoplastic propellant formulation 1

[0034]

[0035] Table 3 Propellant formulation properties

[0036] Test items Formulation properties Theoretical Specific Impulse (N·s / kg) 2510～2600 Density (g / cm 3 )

Embodiment 2

[0038] The modified plastic grease 2 shown in Table 4 was used to prepare a propellant according to the composition formula 2 shown in Table 5, and the properties of the obtained propellant are shown in Table 6.

[0039] Table 4 Modified plastic grease 2

[0040] project Adhesive properties Melting point (°C) 80～85 Molecular weight (Mn) 400～600 Minimum initial decomposition temperature (°C) 230

[0041] Table 5 Low melting point thermoplastic propellant formulation 2

[0042]

[0043] Table 6 Propellant formulation properties

[0044] Test items Formulation properties Theoretical Specific Impulse (N·s / kg) 2450～2574 Density (g / cm 3 )

Embodiment 3

[0046] The modified plastic grease 3 shown in Table 7 was used to prepare a propellant according to the composition formula 3 shown in Table 8, and the properties of the obtained propellant are shown in Table 9.

[0047] Table 7 Modified plastic grease 3

[0048] project Adhesive properties Melting point (°C) 85-90 Molecular weight (Mn) 600～800 Minimum initial decomposition temperature (°C) 250

[0049] Table 8 Low melting point thermoplastic propellant formulation 3

[0050]

[0051] Table 9 Propellant formulation properties

[0052] project Formulation properties Theoretical Specific Impulse (N·s / kg) 2330～2470 Density (g / cm 3 )

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Abstract

The invention provides a low-melting-point thermoplastic propellant. The low-melting-point thermoplastic propellant comprises, by mass, 65.0 to 75.0% of an oxidizing agent, 10.0 to 20.0% of a metal fuel, 10.0 to 20.0% of modified plastic grease and 1.0 to 5.0% of other components. On the premise of addition of no solvent or functional aid, the thermoplastic propellant has a mixing temperature of lower than 90 DEG C and mixed propellant slurry has low viscosity, so the characteristics of recoverability, recyclability and re-processability of the thermoplastic propellant are given to full play, and the market demand for large-scale charging of a solid propellant is met. The thermoplastic propellant provided by the invention has better processing properties compared with conventional propellants and is expected to be applied to solid large booster engines for heavy carrier rockets in the future.

Description

technical field [0001] The invention belongs to the technical field of composite solid propellants, in particular to a low-melting thermoplastic propellant with a mixing temperature lower than 90°C and a preparation method thereof. Background technique [0002] Solid rocket booster technology is an important step in the implementation of my country's space development strategy. It has important strategic significance for improving the ability to enter space, enhancing my country's political influence in the international community, and improving comprehensive national strength. It is my country's solid propellant technology to achieve military-civilian integration important direction of development. [0003] With the continuous deepening of research on energetic thermoplastic propellant technology, its energy performance has been gradually improved to the level of butylated hydroxyl composite solid propellant, which can meet the application requirements of solid large-boost e...

Claims

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Application Information

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IPC IPC(8): C06B33/06C06B33/12C06B33/14C06B21/00
CPCC06B21/0008C06B21/0058C06B33/06C06B33/12C06B33/14
Inventor 王伟李伟王芳付晓梦胡建江庞爱民
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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