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A kind of preparation method of 3-aminopropyltriethoxysilane modified graphene oxide/nitrocellulose composite

A technology of aminopropyltriethoxysilane and oxidized rock, which is applied in the fields of nitration explosive components, offensive equipment, explosive processing equipment, etc., can solve the problems not directly given, and reduce the glass transition temperature and broaden the range of temperature adaptation , Improve the effect of thermal performance

Active Publication Date: 2022-03-15
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 mainly improves the thermal properties of NC and increases the exothermic peak temperature of NC, and does not directly give relevant technical enlightenment on the influence of this method on the glass transition temperature of NC.

Method used

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  • A kind of preparation method of 3-aminopropyltriethoxysilane modified graphene oxide/nitrocellulose composite
  • A kind of preparation method of 3-aminopropyltriethoxysilane modified graphene oxide/nitrocellulose composite
  • A kind of preparation method of 3-aminopropyltriethoxysilane modified graphene oxide/nitrocellulose composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 20mg of 3-aminopropyltriethoxysilane-modified graphene oxide into 60g of tetrahydrofuran, ultrasonically disperse at 25°C for 1.5h, add 4.0g of NC to 100g of tetrahydrofuran, stir at 23°C for 1.5h, and wait until NC is completely dissolved ; Pour the amino-functionalized graphene oxide dispersion into the NC 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 / nitrocellulose (NC) composite. The thermal decomposition temperature of the amino-functionalized graphene oxide / NC composite is 235.6°C, which is 6.6°C higher than that of NC, and the glass transition temperature is -83.9°C, which is 19.8°C lower than that of NC. in image 3 and 4 They are the thermal decomposition diagram and the glass transition temperature diagram of the amino-functionalized graphene oxide / NC compo...

Embodiment 2

[0040]Add 60mg of 3-aminopropyltriethoxysilane-modified graphene oxide into 150g of tetrahydrofuran, ultrasonically disperse at 35°C for 2.0h, add 6.0g of NC to 200g of tetrahydrofuran, stir at 34°C for 2.0h, and wait until NC is completely dissolved ; Pour the amino-functionalized graphene oxide dispersion into the NC 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 / nitrocellulose (NC) composite. The thermal decomposition temperature of the amino-functionalized graphene oxide / NC composite is 230.1 °C, and the glass transition temperature is -75.9 °C.

Embodiment 3

[0042] Add 55mg of 3-aminopropyltriethoxysilane-modified graphene oxide into 125g of tetrahydrofuran, ultrasonically disperse at 33°C for 1.0h, add 5.9g of NC into 190g of tetrahydrofuran, stir at 33°C for 1.5h, and wait until NC is completely dissolved ; Pour the amino-functionalized graphene oxide dispersion into the NC 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, it was baked at 37° C. for 3.5 hours to obtain 5.9 g of the corresponding amino-functionalized graphene oxide / nitrocellulose (NC) composite. The thermal decomposition temperature of the amino-functionalized graphene oxide / NC composite is 235.2 °C, and the glass transition temperature is -80.4 °C.

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Abstract

The present invention provides a kind of preparation method of 3-aminopropyltriethoxysilane modified graphene oxide / / nitrocellulose compound, and this method has not only improved NC thermal performance, also reduced NC glass transition temperature 3- Preparation method of aminopropyltriethoxysilane modified graphene oxide / nitrocellulose (NC) composite. The 3-aminopropyltriethoxysilane-modified graphene oxide / / NC composite prepared by the present invention can not only improve the thermal performance of NC, increase the thermal decomposition temperature by 0.5°C to 6.6°C, but also reduce the vitrification of NC The temperature is reduced by 10.5°C to 19.8°C.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to a preparation method of 3-aminopropyltriethoxysilane modified graphene oxide / / nitrocellulose (NC) composite. Background technique [0002] As a traditional energetic binder, nitrocellulose (NC) is one of the important components of double-base propellants; it is widely used in small and medium-sized rocket and missile engine charges. The energy provided by the thermal decomposition of NC is much greater than that provided by the binder in propellants such as composite propellants. At the same time, as the main component of double-base solid propellants, the thermal decomposition of NC plays a decisive role in the energy level of solid propellants. Increasing the apparent decomposition heat of NC can significantly increase the energy level of solid propellants. However, due to the strong rigidity of NC molecular chains and other reasons, the glass transition tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B25/28C06B23/00C06B21/00
CPCC06B25/28C06B23/00C06B21/0016
Inventor 陆婷婷丁峰汪营磊陈斌闫峥峰刘卫孝刘亚静
Owner XIAN MODERN CHEM RES INST