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Method for preparing aluminum foam material

A technology of foamed aluminum and composite materials, which is applied in the field of preparation of nano-attapulgite-modified foamed aluminum alloy materials, can solve the problems of poor toughness of foamed aluminum, achieve the effects of improving surface properties, expanding application fields, and improving dispersion effect

Active Publication Date: 2014-07-02
SUZHOU YUXI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of nano-attapulgite / foamed aluminum composite material for the poor toughness of foamed aluminum in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Pretreatment activation of attapulgite

[0018] Put attapulgite in 1.0 mol L -1 sulfuric acid solution for 3 hours, filtered, dried, pulverized, and heat treated at 250°C for 2 hours to obtain activated attapulgite.

[0019] (2) Preparation of nano-attapulgite / aluminum foam composites

[0020] Select Al powder 50%, Al 2 o 3 Powder 29%, dolomite 6%, crushed and mixed, milled in a ball mill for 4 hours, then added 15% nano-attapulgite, continued to stir for 2 hours, dried and formed, and finally sintered at a foaming temperature of 600 ° C, the sintering time was 30 minute.

Embodiment 2

[0022] (1) Pretreatment activation of attapulgite

[0023] Put attapulgite in 2.0 mol·L -1 hydrochloric acid solution for 2 hours, filtered, dried, pulverized, and heat treated at 300°C for 2 hours to obtain activated attapulgite.

[0024] (2) Preparation of nano-attapulgite / aluminum foam composites

[0025] Select Al powder 58%, Al 2 o 3 Powder 31%, calcium carbonate 2%, crushed and mixed, ball milled in a ball mill for 6 hours, then added 9% nano-attapulgite, continued to stir for 1 hour, dried and formed, and finally sintered at a foaming temperature of 700 ° C, and the sintering time was 15 minute.

Embodiment 3

[0027] (1) Pretreatment activation of attapulgite

[0028] Put attapulgite in 3.0 mol·L -1 hydrochloric acid solution for 1 hour, filtered, dried, pulverized, and heat-treated at 450°C for 3 hours to obtain activated attapulgite.

[0029] (2) Preparation of nano-attapulgite / aluminum foam composites

[0030] Select Al powder 45%, Al 2 o 3 Powder 32%, calcium sulfate 8%, crushed and mixed, ball milled in a ball mill for 6 hours, then added 15% of nano-attapulgite, continued to stir for 1 hour, dried and formed, and finally sintered at a foaming temperature of 700 ° C, and the sintering time was 15 minute.

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PUM

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Abstract

The invention relates to a method for preparing an aluminum foam material. The method comprises the following steps: 1) pretreatment activation of attapulgite; and 2) preparation of nano attapulgite / aluminum foam composite material. Compared with the prior art, the method has the advantages that 1) activation treatment is carried out on the attapulgite, so that the surface performance of the attapulgite powder can be improved and the disperse effect of the attapulgite powder is improved; 2) the attapulgite has a special fiber structure, can play the enhancement and toughening effects in the aluminum foam, and improves the mechanical property and the durability of the aluminum foam material; and 3) the attapulgite mineral soil is abundant and low in price. Thus, the application field is further expanded.

Description

technical field [0001] The invention relates to a preparation method of a foamed aluminum material, in particular to a preparation method of a nano-attapulgite-modified foamed aluminum alloy material. 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% to 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. [0003] my country has also carried out some exploratory...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C21/00C22C32/00
Inventor 张宇左士祥
Owner SUZHOU YUXI NEW MATERIAL TECH
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