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Preparation method of superhydrophobic porous spherical nitrocellulose-based explosive compound

A nitrocellulose-based explosive, porous spherical technology, applied in the directions of nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, nitrated explosive components, explosive composite components, etc., to achieve the effects of high efficiency, reduced moisture absorption rate, and simple operation

Active Publication Date: 2021-03-09
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Superhydrophobic technology is a biomimetic technology developed by simulating the surface structure of lotus leaves in the past ten years. There are few reports on the anti-moisture absorption of energetic materials, and this technology can improve the moisture absorption of porous nitrocellulose-based pellets

Method used

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  • Preparation method of superhydrophobic porous spherical nitrocellulose-based explosive compound
  • Preparation method of superhydrophobic porous spherical nitrocellulose-based explosive compound

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A preparation method of superhydrophobic porous spherical nitrocellulose-based explosive compound, comprising the following steps:

[0031] Step 1. Dissolve 1 g of nitrocellulose and trinitrotoluene with a mass ratio of 1:1 in 20 mL of acetone at 50 ° C, add 20 mL of water to stir and disperse, add Tween-80, and mechanically stir to disperse; Tween-80 The dosage is 0.1% of the total mass of nitrocellulose and trinitrotoluene;

[0032] Step 2, add 100mL of water, continue to stir, filter, wash away Tween-80 with water, and dry to obtain a solid product;

[0033] Step 3, dissolving hexadecanoic acid in dichloromethane, adding the solid product of step 2, filtering and drying to obtain a superhydrophobic porous spherical nitrocellulose-based explosive compound; after the hexadecanoic acid is dissolved in dichloromethane The mass concentration of is 0.1%; The consumption of described hexadecanoic acid is 1% of the total mass of nitrocellulose and trinitrotoluene; figure 1...

Embodiment 2

[0036] A preparation method of superhydrophobic porous spherical nitrocellulose-based explosive compound, comprising the following steps:

[0037] Step 1. Dissolve 1 g of nitrocellulose and hexanitrohexaazaisowurtzitane with a mass ratio of 1:3 in 10 mL of ethyl acetate at 50 ° C, add 10 mL of water to stir and disperse, add span-80, and ultrasonically disperse; The dosage of span-80 is 0.1% of nitrocellulose and hexanitrohexaazaisowurtzitane;

[0038] Step 2, add 100mL of water, continue to stir, filter, wash with water to remove span-80, and dry to obtain a solid product;

[0039] Step 3, dissolving fluororubber in acetone, adding the solid product of step 2, filtering and drying to obtain a superhydrophobic porous spherical nitrocellulose-based explosive compound; the mass concentration of the fluororubber dissolved in acetone is 0.1%; The dosage of the fluororubber is 1% of the total mass of nitrocellulose and hexanitrohexaazaisowurtzitane.

[0040] The solid product obt...

Embodiment 3

[0042] A preparation method of superhydrophobic porous spherical nitrocellulose-based explosive compound, comprising the following steps:

[0043] Step 1. Dissolve 1g of nitrocellulose in 10mL of acetone at 50°C, add 20mL of water to stir and disperse, add gelatin, and mechanically stir to disperse; the amount of gelatin is 0.1% of the nitrocellulose;

[0044] Step 2, add 100mL of water, continue to stir, filter, wash away the gelatin with water, and dry to obtain a solid product;

[0045] Step 3, dissolving γ-aminopropyltriethoxysilane in dichloromethane, adding the solid product of step 2, filtering, and freeze-drying to obtain a superhydrophobic porous spherical nitrocellulose-based explosive compound; the γ-ammonia The mass concentration of propyltriethoxysilane dissolved in dichloromethane is 0.1%; the dosage of vinyltrimethoxysilane is 1% of the total mass of nitrocellulose and dinitroaniline.

[0046] The solid product obtained in step 2 and the superhydrophobic porous...

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Abstract

The invention discloses a method for preparing a superhydrophobic porous spherical nitrocellulose-based explosive compound, which comprises the following steps: step 1, dissolving the nitrocellulose-based energetic material and explosives in a solvent at a certain temperature at a certain ratio, and adding the solvent Ⅱ Stir to disperse, add surfactant, and continue to disperse; Step 2, add a large amount of solvent Ⅱ, filter, wash off the surfactant, and dry to obtain a solid product; Step 3, dissolve the low surface energy material in solvent Ⅲ, add step 2 The solid product was filtered and dried to obtain a superhydrophobic porous spherical nitrocellulose-based explosive compound. Compared with samples without superhydrophobic treatment, this method significantly reduces the moisture absorption rate of porous nitrocellulose-based energetic materials, and the burning rate basically does not change after being placed in the air for one month; its significant advantages: (1) simple operation, The method has high efficiency and low cost, and can be mass-produced; (2) the experimental conditions are mild and the cost is low.

Description

technical field [0001] The invention belongs to the super-hydrophobic material preparation technology, in particular to a preparation method of a super-hydrophobic porous spherical nitrocellulose-based explosive compound. Background technique [0002] With the improvement of living standards and the enhancement of environmental protection awareness, people's requirements for smoke-free, non-toxic and other environmental protection indicators and production safety of fireworks are becoming more and more intense. The preparation of environmentally friendly fireworks products with less smoke and high safety will become a popular choice for fireworks. The development goal of the industry, but so far has not found a perfect substitute for black powder, the main reason is that the currently used smokeless powder has a low burning rate and poor ignition performance under low pressure conditions. Nitrocellulose is a kind of energetic compound containing carbon, hydrogen, oxygen and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B25/34C06B25/22C06B23/00C06B21/00
CPCC06B21/0008C06B23/009C06B25/22C06B25/34
Inventor 郭长平冯杨杨卓凡王敦举王瑞浩冀威田璐杨光成
Owner SOUTHWEAT UNIV OF SCI & TECH