CN106676308A - Preparation method of film type foamed aluminum - Google Patents
Preparation method of film type foamed aluminum Download PDFInfo
- Publication number
- CN106676308A CN106676308A CN201710043413.1A CN201710043413A CN106676308A CN 106676308 A CN106676308 A CN 106676308A CN 201710043413 A CN201710043413 A CN 201710043413A CN 106676308 A CN106676308 A CN 106676308A
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- preparation
- foaming
- temperature
- foaming body
- film layer
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/08—Alloys with open or closed pores
- C22C1/088—Foaming process with solid metal other than by powder metallurgy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to a preparation method of film type foamed aluminum. Aluminum powder and calcium chloride serve as raw materials, and open-pore aluminum materials are obtained through preparation. The preparation method comprises the following steps that the aluminum powder and the calcium chloride are dispersively mixed and then subjected to a melting reaction, then low-temperature curing is conducted after filtering adhesion, and finally after slight boiling steeping is conducted, foamed aluminum materials are obtained. The preparation method is simple, batch production is facilitated, and production cost is low; and the obtained foamed aluminum has a stable and uniform pore structure and a stable structure.
Description
Technical field
The invention belongs to aluminum foam field of material technology, is related to a kind of preparation method of film layer formula foaming aluminum.
Background technology
Foamed aluminium is a kind of new function material, and it is the similar foam-like of numerous bubbles of being scattered here and there in metal aluminum substrate
Ultralight metal material, general porosity is 40%-98%.Its proportion is little, heat-resisting, sound-absorbing, antidetonation, have special physics and chemically
Can, have wide practical use in fields such as machinery, electronics, building, communications and transportation, light industry, military projects, such as decorate as lightweight
Construction material, light industry filler and catalyst, heat exchanger, fire proofing, sound insulation noise elimination, damping anti-impact, electromagnetic shielding etc..Mesh
Front known foamed aluminium preparation method is mainly foaming.The intensity of foamed aluminium depends on the intensity of pore structure, but due to hole knot
Structure lack of homogeneity and skewness, are difficult to ensure that the raising of foamed aluminium fragility, intensity.
The content of the invention
The purpose of the present invention is exactly the defect in order to overcome above-mentioned prior art to exist and provides a kind of hole of stable and uniform
The preparation method of the foaming aluminum of gap structure and stabilized structure.
The purpose of the present invention can be achieved through the following technical solutions：
Step 1, by foaming body ultrasound washing 2-3h is carried out, after drying naturally, using ethanol and acetone passivation 2-4h, after drying
To passivation foaming body；
Step 2, carries out aluminium powder and calcium chloride solid stirring and is mixed to get hybrid solid；
Step 3, by hybrid solid molten, and keeping temperature are heated to；
Step 4, fused solution is filtered while hot foaming body, then foaming body is carried out into low-temperature setting, obtains plated film foaming body；
Step 5, plated film foaming body is put in water carries out micro-boiling immersion 2-4h, and foaming aluminum is obtained after drying.
The foaming body is using aluminum oxide foaming body or carborundum foaming body.
The aluminium powder is 1 with the proportioning of calcium chloride:0.01-0.12.
Supersonic frequency in step 1 is 1-3kHz, and the passivation post-baking temperature is 60-80 DEG C；Using what is be cleaned by ultrasonic
Mode, while carrying out double passivation using absolute ethyl alcohol and acetone, can be passivated by discrete energy by the Impurity removal on surface
Surface.
Solid stirring in step 2 adopts stirring in water bath method, and the stirring in water bath temperature is 30-50 DEG C；Stirred using water-bath
The mode mixed is mixed, and can be mixed solid, it is ensured that the integrality between solid, prevents friction from causing localized hyperthermia, destruction
Performance.
Melt temperature in step 3 is 600-650 DEG C, and the hybrid solid under molten condition forms liquid, constant temperature time
For 0.5-1h；There is good doping using the mixing material of molten condition, while keeping the molten condition energy of a period of time
Enough guarantee the conversion completely of material.
The rate of filtration while hot in step 4 is 10-20mL/min, and the temperature of the low-temperature setting is 10-15mL/min,
The low-temperature setting is cooled down or water-cooling pattern using liquid nitrogen, mixed melting liquid can be sticked to into foaming by way of filtering
Body surface face, while accelerating solidification by low-temperature setting, prevents its liquid communication.
Micro-boiling temperature in step 5 is 100-110 DEG C, by the calcium chloride in mixture of the micro-boiling reaction by surface attachment
Dissolving is absorbed, microporous structure is obtained.
In the present invention, with aluminium powder and calcium chloride as raw material, through hole aluminum is prepared, preparing thinking is：By aluminium powder and
After calcium chloride dispersion mixing, carry out frit reaction, then filter adhesion after carry out low-temperature setting, most after Jing micro-boiling immersion after, obtain
To foaming aluminum.
Compared with prior art, the invention has the characteristics that：
1）With aluminium powder and calcium chloride as raw material, prepare through hole foaming aluminum, thoroughly solve pore structure lack of homogeneity and
The inadequate problem of structural strength；Preparation method is simple, is conducive to carrying out mass production, and low production cost；That what is prepared sends out
Bubble aluminium has the pore structure of stable and uniform, stabilized structure.
Description of the drawings
Fig. 1 is foamed aluminium picture obtained in embodiment 1.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail with specific embodiment.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1：
A kind of preparation method of film layer formula foaming aluminum, it is characterised in that its preparation method is as follows：
Step 1, by foaming body ultrasound washing 2h is carried out, and after drying naturally, using ethanol and acetone passivation 2h, is obtained after drying blunt
Change foaming body；
Step 2, carries out aluminium powder and calcium chloride solid stirring and is mixed to get hybrid solid；
Step 3, by hybrid solid molten, and keeping temperature are heated to；
Step 4, fused solution is filtered while hot foaming body, then foaming body is carried out into low-temperature setting, obtains plated film foaming body；
Step 5, plated film foaming body is put in water carries out micro-boiling immersion 2h, and foaming aluminum is obtained after drying.
The foaming body adopts aluminum oxide foaming body.
The aluminium powder is 1 with the proportioning of calcium chloride:0.01.
Supersonic frequency in step 1 is 1kHz, and the passivation post-baking temperature is 60 DEG C.
Solid stirring in step 2 adopts stirring in water bath method, and the stirring in water bath temperature is 30 DEG C.
Melt temperature in step 3 is 600 DEG C, and the hybrid solid under molten condition forms liquid, and constant temperature time is
0.5h。
The rate of filtration while hot in step 4 is 10mL/min, and the temperature of the low-temperature setting is 10mL/min, described low
Temperature solidification is cooled down using liquid nitrogen.
Micro-boiling temperature in step 5 is 100 DEG C.
Fig. 1 is the photo in kind of the foamed aluminium prepared using the inventive method；After testing, the hole of prepared foamed aluminium
Volume fraction is 83%, and the uniformity is good, and its compressive strength is 47MPa.
Embodiment 2
A kind of preparation method of film layer formula foaming aluminum, it is characterised in that its preparation method is as follows：
Step 1, by foaming body ultrasound washing 3h is carried out, and after drying naturally, using ethanol and acetone passivation 4h, is obtained after drying blunt
Change foaming body；
Step 2, carries out aluminium powder and calcium chloride solid stirring and is mixed to get hybrid solid；
Step 3, by hybrid solid molten, and keeping temperature are heated to；
Step 4, fused solution is filtered while hot foaming body, then foaming body is carried out into low-temperature setting, obtains plated film foaming body；
Step 5, plated film foaming body is put in water carries out micro-boiling immersion 4h, and foaming aluminum is obtained after drying.
The foaming body adopts carborundum foaming body.
The aluminium powder is 1 with the proportioning of calcium chloride: 0.12.
Supersonic frequency in step 1 is 3kHz, and the passivation post-baking temperature is 80 DEG C.
Solid stirring in step 2 adopts stirring in water bath method, and the stirring in water bath temperature is 50 DEG C.
Melt temperature in step 3 is 650 DEG C, and the hybrid solid under molten condition forms liquid, and constant temperature time is 1h.
The rate of filtration while hot in step 4 is 20mL/min, and the temperature of the low-temperature setting is 15mL/min, described low
Temperature solidification is using liquid nitrogen cooling or water-cooling pattern.
Micro-boiling temperature in step 5 is 110 DEG C.
After testing, the pore volume fraction of prepared foamed aluminium is 87%, and the uniformity is good, and its compressive strength is
48MPa。
Embodiment 3
A kind of preparation method of film layer formula foaming aluminum, it is characterised in that its preparation method is as follows：
Step 1, by foaming body ultrasound washing 3h is carried out, and after drying naturally, using ethanol and acetone passivation 3h, is obtained after drying blunt
Change foaming body；
Step 2, carries out aluminium powder and calcium chloride solid stirring and is mixed to get hybrid solid；
Step 3, by hybrid solid molten, and keeping temperature are heated to；
Step 4, fused solution is filtered while hot foaming body, then foaming body is carried out into low-temperature setting, obtains plated film foaming body；
Step 5, plated film foaming body is put in water carries out micro-boiling immersion 3h, and foaming aluminum is obtained after drying.
The foaming body is using aluminum oxide foaming body or carborundum foaming body.
The aluminium powder is 1 with the proportioning of calcium chloride:0.08.
Supersonic frequency in step 1 is 2kHz, and the passivation post-baking temperature is 70 DEG C.
Solid stirring in step 2 adopts stirring in water bath method, and the stirring in water bath temperature is 40 DEG C.
Melt temperature in step 3 is 630 DEG C, and the hybrid solid under molten condition forms liquid, and constant temperature time is
0.8h。
The rate of filtration while hot in step 4 is 15mL/min, and the temperature of the low-temperature setting is 13mL/min, described low
Temperature solidification is using liquid nitrogen cooling or water-cooling pattern.
Micro-boiling temperature in step 5 is 105 DEG C.
After testing, the pore volume fraction of prepared foamed aluminium is 89%, and the uniformity is good, and its compressive strength is
50MPa。
The above-mentioned description to embodiment is that invention is understood that and used for ease of those skilled in the art.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel announcement of the invention, the improvement made without departing from scope and modification all should be the present invention's
Within protection domain.
Claims (8)
1. a kind of preparation method of film layer formula foaming aluminum, it is characterised in that its preparation method is as follows：
Step 1, by foaming body ultrasound washing 2-3h is carried out, after drying naturally, using ethanol and acetone passivation 2-4h, after drying
To passivation foaming body；
Step 2, carries out aluminium powder and calcium chloride solid stirring and is mixed to get hybrid solid；
Step 3, by hybrid solid molten, and keeping temperature are heated to；
Step 4, fused solution is filtered while hot foaming body, then foaming body is carried out into low-temperature setting, obtains plated film foaming body；
Step 5, plated film foaming body is put in water carries out micro-boiling immersion 2-4h, and foaming aluminum is obtained after drying.
2. the preparation method of a kind of film layer formula foaming aluminum according to claim 1, it is characterised in that the foaming body is adopted
Aluminum oxide foaming body or carborundum foaming body.
3. the preparation method of a kind of film layer formula foaming aluminum according to claim 1, it is characterised in that the aluminium powder and chlorination
The proportioning of calcium is 1:0.01-0.12.
4. a kind of preparation method of film layer formula foaming aluminum according to claim 1, it is characterised in that the ultrasound in step 1
Frequency is 1-3kHz, and the passivation post-baking temperature is 60-80 DEG C.
5. a kind of preparation method of film layer formula foaming aluminum according to claim 1, it is characterised in that the solid in step 2
Stirring adopts stirring in water bath method, and the stirring in water bath temperature is 30-50 DEG C.
6. a kind of preparation method of film layer formula foaming aluminum according to claim 1, it is characterised in that the melting in step 3
Temperature is 600-650 DEG C, and the hybrid solid under molten condition forms liquid, and constant temperature time is 0.5-1h.
7. a kind of preparation method of film layer formula foaming aluminum according to claim 1, it is characterised in that taking advantage of in step 4
Heat filtering speed is 10-20mL/min, and the temperature of the low-temperature setting is 10-15mL/min, and the low-temperature setting adopts liquid nitrogen
Cooling or water-cooling pattern.
8. a kind of preparation method of film layer formula foaming aluminum according to claim 1, it is characterised in that the micro-boiling in step 5
Temperature is 100-110 DEG C.
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| CN201710043413.1A CN106676308B (en) | 2017-01-21 | 2017-01-21 | A kind of preparation method of film layer formula foaming aluminum |
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| CN201710043413.1A CN106676308B (en) | 2017-01-21 | 2017-01-21 | A kind of preparation method of film layer formula foaming aluminum |
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| CN106676308A true CN106676308A (en) | 2017-05-17 |
| CN106676308B CN106676308B (en) | 2018-02-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176043A (en) * | 1987-12-28 | 1989-07-12 | Aichi Steel Works Ltd | Manufacture of gas-permiable foaming aluminum |
| CN103343256A (en) * | 2013-07-29 | 2013-10-09 | 吉林大学 | Preparation method of spherical through hole foamed aluminium |
| CN104498760A (en) * | 2014-12-02 | 2015-04-08 | 同济大学 | Preparation method of open pore foamed aluminum capable of easily removing pore-forming agent |
| CN104561637A (en) * | 2015-01-29 | 2015-04-29 | 山东理工大学 | Method for manufacturing foamed aluminum by taking calcium oxide as seepage particles |
| CN105039770A (en) * | 2015-06-30 | 2015-11-11 | 西安理工大学 | Method for utilizing directional solidification technique to prepare porous metal materials |
| CN105714145A (en) * | 2016-04-19 | 2016-06-29 | 山东理工大学 | Foamed aluminum material preparation method by taking calcium oxide as seepage particles |
-
2017
- 2017-01-21 CN CN201710043413.1A patent/CN106676308B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176043A (en) * | 1987-12-28 | 1989-07-12 | Aichi Steel Works Ltd | Manufacture of gas-permiable foaming aluminum |
| CN103343256A (en) * | 2013-07-29 | 2013-10-09 | 吉林大学 | Preparation method of spherical through hole foamed aluminium |
| CN104498760A (en) * | 2014-12-02 | 2015-04-08 | 同济大学 | Preparation method of open pore foamed aluminum capable of easily removing pore-forming agent |
| CN104561637A (en) * | 2015-01-29 | 2015-04-29 | 山东理工大学 | Method for manufacturing foamed aluminum by taking calcium oxide as seepage particles |
| CN105039770A (en) * | 2015-06-30 | 2015-11-11 | 西安理工大学 | Method for utilizing directional solidification technique to prepare porous metal materials |
| CN105714145A (en) * | 2016-04-19 | 2016-06-29 | 山东理工大学 | Foamed aluminum material preparation method by taking calcium oxide as seepage particles |
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| CN106676308B (en) | 2018-02-27 |
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Effective date of registration: 20200116 Address after: 226500 Building 1, No.6 Yuelong Road, Chengbei street, Rugao City, Nantong City, Jiangsu Province Patentee after: Jiangsu Baida Aluminum Technology Co., Ltd Address before: 528415 No. 3 Workshop, No. 6 Shangji Road, Shalang Second Industrial Zone, Zhongshan City, Guangdong Province (Third Floor) Patentee before: Yang Lin |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: 226500 Building 1, No.6 Yuelong Road, Chengbei street, Rugao City, Nantong City, Jiangsu Province Patentee after: Jiangsu Baida Curtain Wall Technology Co.,Ltd. Address before: 226500 Building 1, No.6 Yuelong Road, Chengbei street, Rugao City, Nantong City, Jiangsu Province Patentee before: Jiangsu Baida Aluminum Technology Co.,Ltd. |