Poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and propellant containing same and preparation method thereof

A technology of ferrocene oxyethyl acrylate and hydroxyethyl acrylate, which is applied in the fields of aviation and aerospace, can solve the problems of limited promotion and application, complicated synthesis process, etc. Effect

Inactive Publication Date: 2010-03-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that these methods usually have a complex synthesis process, which limits their promotion and application

Method used

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  • Poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and propellant containing same and preparation method thereof
  • Poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and propellant containing same and preparation method thereof
  • Poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and propellant containing same and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Table 2: The distribution ratio of each component of propellant in embodiment 1

[0057] components

Mass percentage (%)

mass (g)

Ammonium perchlorate

70.0

0.450

hydroxyl terminated polybutadiene

22.90

0.127

Poly(meth)acrylate ferrocenyl

Oxyethyl ester (Mw=15143)

2.25

0.014

1,6-Hexanediisocyanate (HDI)

4.85

0.030

[0058] The method for preparing propellant in the present embodiment is as follows:

[0059] (1) Treatment of oxidizing agent: take 0.45 g of ammonium perchlorate, and grind it with a mortar before use, so that the granular ammonium perchlorate becomes powder, so that it can be evenly mixed with other components.

[0060] (2) ①Synthesis of monomer ferrocenyloxyethyl (meth)acrylate: at room temperature, add 3.6g (14.5mmol) of ferrocenemonoyl chloride into a two-necked flask, add 40mL CH 2 Cl 2 , (meth)hydroxyethyl acrylate 1.9mL (14.5mmol), triethylam...

Embodiment 2

[0064] Table 3: The distribution ratio of each component of propellant in embodiment 2

[0065] components

Mass percentage (%)

mass (g)

Ammonium perchlorate

79.63

0.4963

hydroxyl terminated polybutadiene

12.98

0.0809

Ferrocene poly(meth)acrylate

Acyloxyethyl ester (Mw=12145)

2.27

0.0142

1,6-Hexyl diisocyanate

5.12

0.0319

[0066] Prepare the propellant as follows:

[0067] 1) Treatment of ammonium perchlorate

[0068] Before use, ammonium perchlorate is ground with a mortar to make granular ammonium perchlorate into powder, so that it can be mixed with other components evenly.

[0069] 2) ①Synthesis of monomer ferrocenyloxyethyl (meth)acrylate: at room temperature, add 3.6g (14.5mmol) of ferrocenemonoyl chloride into a two-necked flask, add 40mL CH 2 Cl 2 , 3.82mL (29.0mmol) of hydroxyethyl (meth)acrylate, 4.0mL (29.0mmol) of triethylamine, then heated up to 50°C, ...

Embodiment 3

[0073] Table 4: The distribution ratio of each component of propellant in embodiment 3

[0074] components

Mass percentage (%)

mass (g)

Ammonium perchlorate

72.08

0.4539

hydroxyl terminated polybutadiene

20.26

0.1276

Ferrocene poly(meth)acrylate

Acyloxyethyl ester (Mw=6390)

2.28

0.0144

1,6-Hexyl diisocyanate

5.38

0.0339

[0075] Prepare the propellant as follows:

[0076] 1) Treatment of ammonium perchlorate

[0077] Before use, ammonium perchlorate is ground with a mortar to make granular ammonium perchlorate into powder, so that it can be mixed with other components evenly.

[0078] 2) ①Synthesis of monomer ferrocenyloxyethyl (meth)acrylate: at room temperature, add 3.6g (14.5mmol) of ferrocenemonoyl chloride into a two-necked flask, add 40mL CH 2 Cl 2 , (meth)hydroxyethyl acrylate 1.9mL (15.5mmol), triethylamine 2.0mL (14.5mmol), then heated to 50 ° C, stirred ...

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Abstract

The invention discloses a poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and a propellant containing the burning-rate accelerator and a preparation method thereof, wherein the molecular weight (Mw) of the poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator is 6000 to 16000, and the structural formula is shown as follow, wherein R1 is -H or CH3; and the propellant comprises the following components by the mass percent: 70 to 80 percent of oxidant, 12 to 25 percent of binder, 1 to 3 percent of poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator and 4 to 6 percent of curing agent. The invention has the advantages that the burning-rate accelerator has simple structure, high molecular weight and stable performance and can distinctly reduce decomposition temperature of ammonium perchlorate, and the effect is better than that of normal ferrocene burning-rate accelerator; and the poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator is not apt to be transferred during storage in the propellant so as to lead the preparation process of the propellant to be safer; and the burning-rate catalysis effect of the propellant adopting the poly (methyl) acrylic acid ferrocene acyloxy ethyl ester burning-rate accelerator is better.

Description

technical field [0001] The invention relates to a polyferrocene-based burning rate accelerator and a propellant containing the accelerator, which are mainly used in aerospace and aviation fields. Background technique [0002] Ferrocene and its derivatives are important burning rate accelerators in rocket propellants, and have important applications in aerospace and national defense industries. Rocket propellants usually use small-molecule ferrocene and its derivatives as burning rate accelerators, which are very sensitive to static electricity when mixed with ammonium perchlorate fine powder, so that they are easily It causes accidents during propellant processing; and it is also prone to migration during storage, which in turn affects the use of propellants. Therefore, research on the synthesis and performance of new ferrocene and its derivatives is a hot and difficult point in the research of burning rate accelerators. In the prior art, the commonly used method of overco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10C08F130/04C06D5/00
Inventor 高敬民王立霍甲肖安国俞豪杰丁文兵
Owner ZHEJIANG UNIV
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