Preparation method for foamed aluminum composite material

A composite material and foamed aluminum technology, which is applied in the field of preparation of foamed aluminum composite materials, can solve the problems of fast decomposition of foaming agent and metal calcium tackifier, harsh operating conditions, and low yield, and is suitable for large-scale applications , Simple operation, high yield effect

Inactive Publication Date: 2016-04-20
CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention: in the process of preparing foamed aluminum materials by the current traditional melt foaming method, although closed-cell foamed aluminum with large size and regular pore structure can be produced, there are still harsh operating conditions and the finished product low rate and the use of TiH 2 Foaming agent and metallic calcium viscosifier decompose fast, the present situation of high price provides a kind of raw material that puts tin oxide, calcium carbonate and aluminum powder into the reaction kettle, passes nitrogen into the reaction kettle, and uses Magnesium strips are used as igniters to make the aluminum powder undergo a thermite reaction, and finally decompose to generate calcium oxide and carbon dioxide, and then mix and dissolve the generated calcium oxide and carbon dioxide with ENJ-3029 foaming agent and polyacrylamide in water, spray on the The foamed blank is dried to obtain the preparation method of foamed aluminum composite material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] First, according to the number of parts by mass, take 5 parts of calcium carbonate and put it into a pulverizer, pulverize it for 15 minutes, pass through a 110 mesh sieve to obtain calcium carbonate powder, then place the obtained calcium carbonate powder in a reaction kettle, and add 50 parts of calcium carbonate to it Aluminum powder and 30 parts of tin oxide were stirred at a speed of 100r / min for 15min to make them fully mixed to obtain a mixed powder; Nitrogen gas was fed into the bottom of the reaction kettle, and after 10 minutes, stop feeding and let it stand for 3 minutes, then take the magnesium strips, put them into the reaction kettle quickly after being ignited, and continue to seal the reaction kettle so that the magnesium strips burn in nitrogen, and wait until the temperature in the reaction kettle When the temperature rises to 400°C, stop the burning of magnesium strips, increase the speed to 200r / min, stir for 1 hour, and obtain a foaming base material...

example 2

[0027] First, according to the number of parts by mass, take 8 parts of calcium carbonate and put them into a pulverizer, pulverize for 20 minutes, pass through a 115 mesh sieve to obtain calcium carbonate powder, then place the obtained calcium carbonate powder in a reaction kettle, and add 55 parts of calcium carbonate to it Aluminum powder and 40 parts of tin oxide were stirred at a speed of 130r / min for 18min to make it fully mixed to obtain a mixed powder; Nitrogen is introduced from the bottom of the reactor, after 13 minutes, stop feeding, let it stand for 4 minutes, then take the magnesium strips, put them into the reactor quickly after being ignited, continue to seal the reactor, so that the magnesium bars burn in nitrogen, and put them in the reactor When the temperature rises to 450°C, stop the combustion of the magnesium strips, increase the speed to 230r / min, stir for 1.5h, and obtain a foaming base material; then take 45 parts of cement, 23 parts of vermiculite, a...

example 3

[0030] First, according to the number of parts by mass, take 10 parts of calcium carbonate and put it into a pulverizer, pulverize it for 25 minutes, pass through a 120-mesh sieve to obtain calcium carbonate powder, then place the obtained calcium carbonate powder in a reaction kettle, and add 60 parts of calcium carbonate to it Aluminum powder and 45 parts of tin oxide were stirred at a speed of 150r / min for 20min to make them fully mixed to obtain a mixed powder; Nitrogen gas was fed into the bottom of the reaction kettle, and after 15 minutes, stop feeding and let it stand for 5 minutes, then take the magnesium strips, put them into the reaction kettle quickly after being ignited, and continue to seal the reaction kettle so that the magnesium strips burn in nitrogen. When the temperature rises to 500°C, stop the burning of magnesium strips, increase the speed to 250r / min, stir for 2 hours, and obtain a foaming base material; then take 65 parts of cement, 25 parts of vermicul...

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Abstract

The invention discloses a preparation method for foamed aluminum composite material, and belongs to the field of foamed aluminum material. According to the invention, stannic oxide, calcium carbonate and aluminum powder are adopted as raw material and are placed into a reaction still, the aluminum powder generates thermit reaction and is finally resolved into calcium oxide and carbon dioxide by guiding nitrogen gas into the reaction still and adopting magnesium rods as ignition agents, then the generated calcium oxide and the generated carbon dioxide are mixed with foaming agents ENJ-3029 and polyacrylamide and then are dissolved into water for forming slurry, the slurry is sprayed on manufactured foaming blanks, then the foaming blanks are dried, and finally the foamed aluminum composite material is obtained. Through the examples, the preparation method is unique and novel, the shortcomings that the cost is high and the resolving speed is high when TiH2 and calcium metal are adopted as foaming agents and thickening agents respectively are overcome, and the manufactured foamed aluminum material is high in yield and can be widely applied.

Description

technical field [0001] The invention discloses a method for preparing a foamed aluminum composite material, which belongs to the field of foamed aluminum materials. 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 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 be used for surface coating, therefore, it has broad application prospects in the fields of machinery, electronics, construction, transportation, light chemical industry, military industry and so on. [0003] At present, the most commercially valuable foamed al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C21/00
CPCC22C1/08C22C21/00C22C1/083
Inventor 高玉梅张帆
Owner CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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