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A kind of preparation method of film layer type foamed aluminum

A technology of foamed aluminum and film layer, which is applied in the field of aluminum foam materials, can solve the problems of poor uniformity of pore structure, increased brittleness of foamed aluminum, and difficulty in ensuring strength, etc., and achieves low production cost, stable structure, and stable and uniform pore structure.

Active Publication Date: 2018-02-27
江苏佰大幕墙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The strength of foamed aluminum depends on the strength of the pore structure, but due to the poor uniformity and uneven distribution of the pore structure, the brittleness of the foamed aluminum increases and the strength is difficult to guarantee

Method used

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  • A kind of preparation method of film layer type foamed aluminum

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing film-type foamed aluminum, characterized in that the preparation method is as follows:

[0024] Step 1, the foam body is subjected to ultrasonic water washing for 2 hours, after being dried naturally, passivated with ethanol and acetone for 2 hours, and the passivated foam body is obtained after drying;

[0025] Step 2, stirring and mixing the aluminum powder and calcium chloride to obtain a mixed solid;

[0026] Step 3, heating the mixed solid to a molten state, and maintaining the temperature;

[0027] Step 4, filtering the foam while the melt is hot, and then solidifying the foam at a low temperature to obtain a coated foam;

[0028] Step 5, putting the coated foam body into water for slight boiling soaking for 2 hours, and drying to obtain foamed aluminum.

[0029] The foam adopts aluminum oxide foam.

[0030] The ratio of the aluminum powder to calcium chloride is 1:0.01.

[0031] The ultrasonic frequency in step 1 is 1 kHz, and the dryin...

Embodiment 2

[0038] A method for preparing film-type foamed aluminum, characterized in that the preparation method is as follows:

[0039] Step 1, the foam body is subjected to ultrasonic washing for 3 hours, after natural drying, passivation with ethanol and acetone for 4 hours, and the passivated foam body is obtained after drying;

[0040] Step 2, stirring and mixing the aluminum powder and calcium chloride to obtain a mixed solid;

[0041] Step 3, heating the mixed solid to a molten state, and maintaining the temperature;

[0042] Step 4, filtering the foam while the melt is hot, and then solidifying the foam at a low temperature to obtain a coated foam;

[0043] Step 5, putting the coated foam body into water for immersion in slight boiling for 4 hours, and drying to obtain foamed aluminum.

[0044] The foam adopts silicon carbide foam.

[0045] The proportioning ratio of described aluminum powder and calcium chloride is 1: 0.12.

[0046] The ultrasonic frequency in step 1 is 3 kH...

Embodiment 3

[0053] A method for preparing film-type foamed aluminum, characterized in that the preparation method is as follows:

[0054] Step 1, the foam body is subjected to ultrasonic water washing for 3 hours, after natural drying, passivation with ethanol and acetone for 3 hours, and the passivated foam body is obtained after drying;

[0055] Step 2, stirring and mixing the aluminum powder and calcium chloride to obtain a mixed solid;

[0056] Step 3, heating the mixed solid to a molten state, and maintaining the temperature;

[0057] Step 4, filtering the foam while the melt is hot, and then solidifying the foam at a low temperature to obtain a coated foam;

[0058] Step 5, putting the coated foam body into water for 3 hours of slight boiling soaking, and drying to obtain foamed aluminum.

[0059] The foam adopts aluminum oxide foam or silicon carbide foam.

[0060] The ratio of the aluminum powder to calcium chloride is 1:0.08.

[0061] The ultrasonic frequency in step 1 is 2 k...

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Abstract

The invention relates to a method for preparing film-type foamed aluminum. Aluminum powder and calcium chloride are used as raw materials to prepare a through-hole aluminum material. The preparation idea is as follows: after the aluminum powder and calcium chloride are dispersed and mixed, the melting reaction is carried out , and then filtered and adhered to low-temperature solidification, and finally soaked in slight boiling to obtain foamed aluminum materials. The preparation method of the present invention is simple, is beneficial to mass production, and has low production cost; the prepared foamed aluminum has a stable and uniform pore structure, and the structure is firm.

Description

technical field [0001] The invention belongs to the technical field of aluminum foam materials and relates to a method for preparing film-type foamed aluminum. Background technique [0002] Aluminum foam is a new type of functional material. It is a foam-like ultra-light metal material with numerous bubbles dispersed in the metal aluminum matrix. The general porosity is 40%-98%. It has small specific gravity, heat resistance, sound absorption, earthquake resistance, special physical and chemical properties, and has broad application prospects in the fields of machinery, electronics, construction, transportation, light chemical industry, military industry, etc., such as light decoration building materials, Light chemical fillers and catalysts, heat exchangers, flame retardant materials, sound insulation, shock absorption and impact resistance, electromagnetic shielding, etc. The currently known preparation method of aluminum foam is mainly the foaming method. The strength o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C21/00
CPCC22C1/08C22C21/00C22C1/088
Inventor 杨林
Owner 江苏佰大幕墙科技有限公司
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