Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A supercritical preparation method of aluminum foam with controllable pore size

A foamed aluminum and supercritical technology, applied in the field of aluminum materials, can solve the problems of low production cost, inability to control and adjust structural parameters arbitrarily, and achieve low production cost, ensure purity and surface cleanliness, and good stability

Active Publication Date: 2021-03-23
SHAOXING UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a supercritical preparation method of aluminum foam with controllable pore size, which completely solves the problem that the structural parameters cannot be controlled and adjusted arbitrarily; the preparation method is simple and is conducive to mass production, and the production Low cost; the prepared foamed aluminum has a stable and uniform pore structure, which improves the controllability of the pores

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A supercritical preparation method of aluminum foam with controllable pore size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A supercritical preparation method of aluminum foam with controllable pore size, comprising the steps of:

[0030] Step 1, adding ethyl cellulose to absolute ethanol and ultrasonicating for 5 minutes to obtain a dispersed alcohol solution;

[0031] Step 2, adding crushed aluminum chips into the dispersed alcohol solution and stirring for 20 minutes to obtain a suspension alcohol solution;

[0032] Step 3, flushing the supercritical carbon dioxide fluid into the suspension alcohol solution, reacting with microwave at constant pressure for 1 hour, and obtaining the mixed solution after settling;

[0033] Step 4, putting the mixed solution into a metal mold for heating and constant pressure reaction for 1 hour, then slowly constant temperature and pressure relief reaction for 2 hours, and cooling to obtain a foamed aluminum precursor after purging with nitrogen;

[0034] Step 5, subjecting the aluminum foam precursor to light decomposition reaction for 2 hours to obtain t...

Embodiment 2

[0044] A supercritical preparation method of aluminum foam with controllable pore size, comprising the steps of:

[0045] Step 1, adding ethyl cellulose to absolute ethanol and ultrasonicating for 10 minutes to obtain a dispersed alcohol solution;

[0046] Step 2, adding crushed aluminum chips into the dispersed alcohol solution and stirring for 50 minutes to obtain a suspension alcohol solution;

[0047] Step 3, flushing the supercritical carbon dioxide fluid into the suspension alcohol solution, reacting with microwave at constant pressure for 3 hours, and obtaining the mixed solution after settling;

[0048] Step 4, putting the mixed solution into a metal mold for heating and constant pressure reaction for 3 hours, then slowly constant temperature and pressure relief reaction for 4 hours, and cooling to obtain a foamed aluminum precursor after purging with nitrogen;

[0049] Step 5, subjecting the aluminum foam precursor to light decomposition reaction for 4 hours to obtai...

Embodiment 3

[0059] A supercritical preparation method of aluminum foam with controllable pore size, comprising the steps of:

[0060] Step 1, adding ethyl cellulose to absolute ethanol and sonicating for 8 minutes to obtain a dispersed alcohol solution;

[0061] Step 2, adding crushed aluminum chips into the dispersed alcohol solution and stirring for 40 minutes to obtain a suspension alcohol solution;

[0062] Step 3, flushing the supercritical carbon dioxide fluid into the suspension alcohol solution, reacting with microwave at constant pressure for 2 hours, and obtaining the mixed solution after settling;

[0063] Step 4, putting the mixed liquid into a metal mold for heating and constant pressure reaction for 2 hours, then slowly constant temperature and pressure relief reaction for 3 hours, and cooling to obtain a foamed aluminum precursor after purging with nitrogen;

[0064] Step 5, subjecting the aluminum foam precursor to light decomposition reaction for 3 hours to obtain the al...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of aluminum materials, and specifically relates to a supercritical preparation method of aluminum foam with controllable pore size, comprising: step 1, adding ethyl cellulose to absolute ethanol and ultrasonicating for 5-10 minutes to obtain a dispersed alcohol solution; step 2. Add crushed aluminum scraps to the dispersing alcohol solution and stir for 20-50 minutes to obtain a suspension alcohol solution; step 3, pour supercritical carbon dioxide fluid into the suspension alcohol solution, react with microwave at constant pressure for 1-3 hours, and obtain Mixed solution; step 4, put the mixed solution into a metal mold for heating and constant pressure reaction for 1-3h, then slowly constant temperature and pressure relief reaction for 2-4h, and use nitrogen purge to cool to obtain the foamed aluminum precursor; step 5, to foam The aluminum precursor is decomposed by light for 2-4 hours to obtain foamed aluminum material. The invention thoroughly solves the problem that the structural parameters cannot be controlled and adjusted arbitrarily; the preparation method is simple, it is beneficial to mass production, and the production cost is low; the prepared foamed aluminum has a stable and uniform pore structure, which improves the controllability of the pores.

Description

technical field [0001] The invention belongs to the technical field of aluminum materials, and in particular relates to a supercritical preparation method of foamed aluminum with controllable pore size. Background technique [0002] Foamed aluminum is made by adding additives to pure aluminum or aluminum alloy and undergoes a foaming process. It 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,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B22F8/00
CPCB22F3/1121B22F8/00Y02W30/50
Inventor 李志彬
Owner SHAOXING UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com