Energetic thermoplastic elastomers for solid propellants

A thermoplastic elastomer and solid propellant technology, applied in organic chemistry and other fields, can solve problems such as high glass transition temperature, insufficient elasticity, and excess rigidity, and achieve good elongation performance

Active Publication Date: 2018-06-01
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, PBAMO / TGAP-based star-shaped ETPE has problems such as high glass transition temperature, excess rigidity, and insufficient elasticity, so it is difficult to be applied in solid propellants.

Method used

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  • Energetic thermoplastic elastomers for solid propellants
  • Energetic thermoplastic elastomers for solid propellants
  • Energetic thermoplastic elastomers for solid propellants

Examples

Experimental program
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Effect test

example 1

[0040] Example 1, the synthesis of energetic thermoplastic elastomer TSETPE for solid propellant:

[0041] 1.1 Synthesis of CPP

[0042] Reaction formula:

[0043]

[0044] In a 500mL four-neck flask equipped with stirring, reflux condenser, thermometer and dropping funnel, add 13.05g (0.05mol) of initiator THEIC and 200mL of dispersant 1,2-dichloroethane. While stirring, the temperature was raised to 30-40°C, and the catalyst BF3 THF 1.0mL (0.008mol) was added dropwise. After the dispersion was uniform, 46.3g (0.5mol) of ECH monomer was added dropwise; when the solid of the initiator disappeared, the reaction liquid formed When homogeneous, lower the temperature slightly and control the reaction temperature between 20 and 30°C, and continue to add the monomer dropwise for a total of about 5 hours. After dropping, cool down to -2°C ~ 0°C, add dropwise a mixed monomer consisting of 54g (0.75mol) of THF and 92.5g (1.0mol) of remaining ECH monomer, the dropping time is about...

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Abstract

The invention discloses an energetic thermoplastic elastomer, the structural formula of which is as follows: where: x 1 +y 1 +z 1 =24~30, is an integer; x 2 +y 2 +z 2 =12~18, are integers; m=30~36, are integers. The invention is mainly used for solid propellants, propellants and press-packed PBX explosives.

Description

technical field [0001] The invention relates to an energetic thermoplastic elastomer (ETPE) for solid propellants, in particular to tetrahydrofuran (THF) modified azidoglycidyl ether (GAP) and poly 3,3-bis-azidomethyloxetane PBAMO-based star-shaped energetic thermoplastic elastomers. Background technique [0002] Military adhesives can be roughly divided into four generations: the first generation is thermoplastic adhesives represented by nitrocellulose (NC); the second generation is inert thermosetting adhesives represented by hydroxyl-terminated polybutadiene (HTPB); the third generation is Energetic thermosetting adhesives represented by azide glycidyl ether (GAP); the fourth milestone of adhesives is energetic thermoplastic elastomers represented by PBAMO / GAP-based ETPE. [0003] After ETPE replaces the standard binders NC and HTPB, it can flexibly and quickly manufacture high-energy, low-sensitivity gun propellants, solid propellants and PBX explosives, which can achie...

Claims

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Application Information

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IPC IPC(8): C07D213/04
Inventor 卢先明莫洪昌朱勇姬月萍张丽洁高福磊刘亚静陈斌汪营磊丁峰刘卫孝
Owner XIAN MODERN CHEM RES INST
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