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A kind of nano aluminum paste and preparation method thereof

A technology of nano-aluminum and nano-aluminum powder, which is applied in the field of nano-aluminum slurry and its preparation, can solve the problems of affecting the properties and practicability of nano-materials, being unsuitable for popularization and use, expensive gelling agents, etc. Easy-to-control, short-to-prepare effect

Inactive Publication Date: 2015-11-25
BEIJING NACHEN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods also have many components and many impurities introduced into the system, which affect the properties and practicability of nanomaterials.
[0006] Liu Xiangcui and others introduced the uniform dispersion technology of nano-aluminum powder in kerosene [Propulsion Technology, Volume 26, No. 2, Page 184]. They added an appropriate amount of organometallic compound gelling agent to kerosene, which is expensive. Not suitable for promotional use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A nano-aluminum slurry, the nano-aluminum slurry is composed of the following components in parts by weight (g): 5 for nano-aluminum powder with a particle diameter of 20nm, 0.5 for polyethylene glycol 800, and 100 for toluene;

[0036] The preparation method of above-mentioned nano-aluminum paste comprises the following steps:

[0037] (1) Add polyethylene glycol 800 in toluene according to the proportioning ratio, and stir evenly;

[0038] (2) Nano-aluminum powder is dropped into the above-mentioned mixed solution;

[0039] (3) Disperse by ball milling for 0.4 hours to make a finished product of nano-scale aluminum powder slurry; the speed of the ball mill is 200 rpm for the revolution of the large plate, and 400 rpm for the rotation of the ball mill tank.

[0040] (4) Remove the ball mill jar, pour out the slurry through a sieve, and leave the balls on the sieve.

[0041] The prepared slurry is a black emulsion, and the transmittance of the slurry is 11% as measure...

Embodiment 2

[0043] A kind of nano-aluminum slurry, by weight part (g) this nano-aluminum slurry is made up of following components: particle diameter is the nano-aluminum powder body of 30nm is 4.5, and silane coupling agent KH792 is 0.15, and ethylene glycol is 100;

[0044]The chemical composition of the silane coupling agent KH792 is: N-(β-aminoethyl)-γ-aminopropyltrimethyl(ethyl)oxysilane;

[0045] The preparation method of above-mentioned nano-aluminum paste comprises the following steps:

[0046] (1) Add silane coupling agent KH792 into ethylene glycol according to the proportion, and stir evenly;

[0047] (2) Nano-aluminum powder is dropped into the above-mentioned mixed solution;

[0048] (3) Disperse by ball milling for 0.5 hour to make a finished product of nano-scale aluminum powder slurry; the speed of the ball mill is 200 rpm for the revolution of the large plate, and 400 rpm for the rotation of the ball mill tank.

[0049] (4) Remove the ball mill jar, pour out the slurry ...

Embodiment 3

[0052] A kind of nano-aluminum slurry, by weight (g) this nano-aluminum slurry is made up of following components: particle diameter is the nano-aluminum powder body of 30nm is 9.5, polycarboxylate sodium salt type dispersant SN5040 is 0.7, water is 100;

[0053] The surface of the nano aluminum powder has been passivated, the thickness of the passivation layer is 3nm, and the passivation layer is alumina;

[0054] Polycarboxylate sodium salt dispersant SN5040 is produced by Guangzhou Guanzhi Chemical Co., Ltd.;

[0055] The preparation method of above-mentioned nano-aluminum paste comprises the following steps:

[0056] (1) Add SN5040 into water according to the ratio, and stir evenly;

[0057] (2) Nano-aluminum powder is dropped into the above-mentioned mixed solution;

[0058] (3) Disperse by ball milling for 0.3 hour to make a finished product of nano-scale aluminum powder slurry; the speed of the ball mill is 220 rpm for the revolution of the large plate, and 440 rpm f...

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Abstract

The invention discloses a nano-aluminum slurry. The nano-aluminum slurry is composed of the following components in parts by weight: 1-20 nano-aluminum powder, 0.05-3 dispersant, and 80-100 solvent; wherein the dispersant is selected from From polycarboxylates, polycarboxylates, polyethylene glycols, polysilanes, polyacrylic acid, silane coupling agents, titanates, aluminate coupling agents; wherein the solvent is selected from alcohols, Ketones, esters, aromatic hydrocarbons, cycloaliphatic hydrocarbons or water. The preparation method of the slurry comprises the following steps: (1) adding the dispersant into the solvent according to the proportion and stirring evenly; (2) putting the nano-aluminum powder into the above-mentioned mixed liquid, stirring it with a ladle to soak it Wet and preliminary dispersion; (3) Disperse by ball milling with a planetary ball mill for 0.3-1 hour to obtain a finished product. The method is to use a suitable dispersant to treat the nano-aluminum powder, coupled with the shearing and emulsification of the ball mill, the nano-aluminum powder can be highly dispersed in the medium to form a uniform and stable slurry, which can be widely used in explosives, fuels, Coatings, activated sintering additives, electronic device coatings and other fields.

Description

technical field [0001] The invention relates to a nanometer material and a preparation method thereof, in particular to a nanometer aluminum slurry and a preparation method thereof. Background technique [0002] Due to its unique microstructure and special properties, nanomaterials have developed rapidly in recent years, and have gradually moved from scientific research to practical stage, and are widely used in aviation, aerospace, military, chemical industry, electronics, medicine and other fields. Nano-aluminum powder is a widely used nano-material. Due to its large specific surface area, the reactivity of nano-aluminum powder is much higher than that of micron-aluminum powder. When added to explosives or fuel, it can greatly increase the combustion speed of fuel and improve the stability of combustion. Therefore, nano-aluminum powder is widely used in high-energy explosives, and can also be used in solid or liquid rocket propellants, small arms platforms, and energetic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/12B22F9/00
Inventor 刘艳翟金玲桂莹芳张波张蕾谷星雪方进轩
Owner BEIJING NACHEN TECH DEV
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