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Method for preparing foamed aluminum of uniform pore structure

A technology of foamed aluminum and pore structure, applied in the field of aluminum materials, can solve the problems of inability to arbitrarily control and adjust structural parameters of foamed aluminum, poor uniformity of pore structure, etc., and achieve the effects of stable and uniform pore structure, stable performance and simple preparation method

Active Publication Date: 2017-05-31
平邑仁安中医药产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, there are still some problems in the research of foamed aluminum. The main problem is that the preparation of foamed aluminum cannot control and adjust the structural parameters arbitrarily, and the uniformity of the pore structure is also poor.

Method used

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  • Method for preparing foamed aluminum of uniform pore structure
  • Method for preparing foamed aluminum of uniform pore structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing aluminum foam with uniform pore structure, the preparation steps are as follows:

[0029] Step 1, put nano silicon dioxide into absolute ethanol, stir evenly to form a sol;

[0030] Step 2, adding calcium carbonate and crushed aluminum scraps to the sol solution in step 1 to form a suspension;

[0031] Step 3, put the dispersant into isopropanol, stir until completely dissolved, and obtain a dispersion;

[0032] Step 4, drop the dispersion liquid into the suspension gel and stir slightly to form a viscous shape;

[0033] Step 5, put the viscous reaction liquid into the preheated metal mold for preheating, and obtain the foamed aluminum precursor after cooling;

[0034] Step 6, soaking the foamed aluminum precursor in a saturated ammonium chloride aqueous solution to obtain a foamed aluminum material.

[0035] The formula in the preparation method is as follows:

[0036] 10 parts of calcium carbonate, 20 parts of crushed aluminum chips, 3 parts...

Embodiment 2

[0045] A method for preparing aluminum foam with uniform pore structure, the preparation steps are as follows:

[0046] Step 1, put nano silicon dioxide into absolute ethanol, stir evenly to form a sol;

[0047] Step 2, adding calcium carbonate and crushed aluminum scraps to the sol solution in step 1 to form a suspension;

[0048] Step 3, put the dispersant into isopropanol, stir until completely dissolved, and obtain a dispersion;

[0049] Step 4, drop the dispersion liquid into the suspension gel and stir slightly to form a viscous shape;

[0050] Step 5, put the viscous reaction liquid into the preheated metal mold for preheating, and obtain the foamed aluminum precursor after cooling;

[0051] Step 6, soaking the foamed aluminum precursor in a saturated ammonium chloride aqueous solution to obtain a foamed aluminum material.

[0052] The formula in the preparation method is as follows:

[0053] 15 parts of calcium carbonate, 30 parts of crushed aluminum chips, 5 parts...

Embodiment 3

[0062] A method for preparing aluminum foam with uniform pore structure, the preparation steps are as follows:

[0063] Step 1, put nano silicon dioxide into absolute ethanol, stir evenly to form a sol;

[0064] Step 2, adding calcium carbonate and crushed aluminum scraps to the sol solution in step 1 to form a suspension;

[0065]Step 3, put the dispersant into isopropanol, stir until completely dissolved, and obtain a dispersion;

[0066] Step 4, drop the dispersion liquid into the suspension gel and stir slightly to form a viscous shape;

[0067] Step 5, put the viscous reaction liquid into the preheated metal mold for preheating, and obtain the foamed aluminum precursor after cooling;

[0068] Step 6, soaking the foamed aluminum precursor in a saturated ammonium chloride aqueous solution to obtain a foamed aluminum material.

[0069] The formula in the preparation method is as follows:

[0070] 12 parts of calcium carbonate, 28 parts of crushed aluminum chips, 4 parts ...

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Abstract

The invention relates to a method for preparing foamed aluminum of a uniform pore structure. A foamed aluminum layer material is prepared with calcium carbonate and crushed aluminum skimmings as raw materials. The preparation idea is that the crushed aluminum skimmings and calcium carbonate are dissolved into a sol solution of nanosilicon dioxide, stable turbid liquid is formed, then dispersion liquid obtained after a dispersion agent is dissolved is injected to the turbid liquid dropwise, a preheating reaction is conducted, then a soaking and replacement reaction is conducted, and the foamed aluminum of the uniform pore structure is obtained. The foamed aluminum obtained through the preparation method is low in cost and high in porosity, and the average pore size of pores is small.

Description

technical field [0001] The invention belongs to the technical field of aluminum materials and relates to a method for preparing foamed aluminum with uniform pore structure. Background technique [0002] Aluminum foam is made by adding additives to pure aluminum or aluminum alloy and undergoing a foaming process, which has both metal and bubble characteristics. It has low density, high impact absorption ability, high temperature resistance, strong fire resistance, corrosion resistance, sound insulation and noise reduction, low thermal conductivity, high electromagnetic shielding, strong weather resistance, filtering ability, easy processing, easy installation, and high forming accuracy , Can carry out surface coating. Aluminum foam has excellent physical properties, chemical properties and mechanical properties as well as recyclability. These excellent properties of aluminum foam make it have broad application prospects in today's material field, and it is a promising engin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08
CPCC22C1/08C22C1/083
Inventor 杨林
Owner 平邑仁安中医药产业发展有限公司
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