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Preparation method of energetic thermoplastic elastomer compound

A technology of thermoplastic elastomers and composites, applied in the field of energetic materials, can solve the problems of affecting the mechanical properties of GAP-ETPE, increasing the glass transition temperature of GAP-ETPE, and not improving the mechanical properties of GAP-ETPE, etc., achieving low cost and easy preparation The method is easy and the effect of delaying the thermal decomposition temperature

Active Publication Date: 2020-12-11
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also improves the synthesis method of GAP-ETPE, thus affecting the mechanical properties of GAP-ETPE, and does not improve the mechanical properties of the synthesized GAP-ETPE, and this method will increase the glass transition temperature of GAP-ETPE

Method used

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  • Preparation method of energetic thermoplastic elastomer compound
  • Preparation method of energetic thermoplastic elastomer compound
  • Preparation method of energetic thermoplastic elastomer compound

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Add 20mg of 3-aminopropyltriethoxysilane-modified graphene oxide into 60g of tetrahydrofuran, ultrasonically disperse at 25°C for 1.5h, add 4.0g of GAP-ETPE into 100g of tetrahydrofuran, stir at 23°C for 1.5h, wait for GAP - The ETPE is completely dissolved; pour the amino-functionalized graphene oxide dispersion into the GAP-ETPE solution, stir the system at 30°C for 1 hour, and pour it into the mold after being uniform. After standing at room temperature for 2 weeks, it was dried at 35° C. for 3.0 h to obtain 4.0 g of the corresponding amino-functionalized graphene oxide / polyazide glycidyl ether-based energetic thermoplastic elastomer (GAP-ETPE) composite. The stress of the amino-functionalized graphene oxide / GAP-ETPE composite is 7.51MPa, which is 2.96MPa higher than that of GAP-ETPE, the strain is 12.31, which is an increase of 2.52, and the thermal decomposition temperature is 240.1℃, which is 5.0℃ higher than that of GAP-ETPE. The glass transition temperature is -...

Embodiment 2

[0051] Add 60mg of 3-aminopropyltriethoxysilane-modified graphene oxide into 150g of tetrahydrofuran, ultrasonically disperse at 35°C for 2.0h, add 6.0g of GAP-ETPE into 200g of tetrahydrofuran, stir at 34°C for 2.0h, wait for GAP - The ETPE is completely dissolved; pour the amino-functionalized graphene oxide dispersion into the GAP-ETPE solution, stir the system at 39°C for 1 hour, and pour it into the mold after being uniform. After standing at room temperature for 2 weeks, it was dried at 38° C. for 4.0 h to obtain 6.0 g of the corresponding amino-functionalized graphene oxide / polyazide glycidyl ether-based energetic thermoplastic elastomer (GAP-ETPE) composite. The stress of the amino-functionalized graphene oxide / GAP-ETPE composite is 7.48MPa, the strain is 12.26, the thermal decomposition temperature is 238.4℃, and the glass transition temperature is -30.0℃.

Embodiment 3

[0053] Add 55mg of 3-aminopropyltriethoxysilane modified graphene oxide into 125g of tetrahydrofuran, disperse ultrasonically at 33°C for 1.0h, add 5.9g of GAP-ETPE into 190g of tetrahydrofuran, stir at 33°C for 1.5h, wait for GAP -ETPE is completely dissolved; pour the amino-functionalized graphene oxide dispersion into the GAP-ETPE solution, stir the system at 36°C for 0.8h, and pour it into the mold after being uniform. After standing at room temperature for 1 week, bake at 37° C. for 3.5 h to obtain 5.9 g of the corresponding amino-functionalized graphene oxide / polyazide glycidyl ether-based energetic thermoplastic elastomer (GAP-ETPE) composite. The stress of the 3-aminopropyltriethoxysilane modified graphene oxide / polyazide glycidyl ether based energetic thermoplastic elastomer composite is 6.84MPa, the strain is 12.06, the thermal decomposition temperature is 239.7℃, and the glass transition temperature is -30.6°C.

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Abstract

The invention discloses a preparation method of an energetic thermoplastic elastomer compound. The method is used for preparing a 3-aminopropyltriethoxysilane modified graphene oxide / glycidyl azide polymer energetic thermoplastic elastomer compound. The synthesized 3-aminopropyltriethoxysilane modified graphene oxide / glycidyl azide polymer energetic thermoplastic elastomer (GAP-ETPE) compound canimprove the thermal stability of original GAP-ETPE, the thermal decomposition temperature is delayed by 0.6-5.0 DEG C, the glass transition temperature of the original GAP-ETPE is reduced by 1.0-3.3 DEG C, the preparation method is easy, and the cost is low.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to a preparation method of an amino-functionalized graphene oxide / polyazide glycidyl ether-based energetic thermoplastic elastomer (GAP-ETPE) compound. Background technique [0002] As a solid propellant binder, energetic thermoplastic elastomer (ETPE) can endow the propellant with the advantages of high energy, insensitivity, low characteristic signal and recyclability. Azide energetic thermoplastic elastomers have attracted widespread attention for their advantages of large heat release, no need for oxygen consumption during decomposition, and good compatibility with nitramine explosives. Among them, polyazide glycidyl ether (GAP)-based ETPE is the representative. Solid propellants based on GAP-ETPE binders have become a research hotspot for thermoplastic elastomer propellants. [0003] Due to the short GAP-ETPE chain and the azido (-N 3 ) limits the fluidity of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/215C08L71/02C08K9/06C08K3/04C06D5/04C01B32/184C01B32/194
CPCC08J3/215C06D5/04C01B32/184C01B32/194C08J2371/02C08K9/06C08K3/042
Inventor 汪营磊陆婷婷赵宝东高福磊刘敏刘卫孝刘亚静
Owner XIAN MODERN CHEM RES INST
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