CN111534724B - High-strength high-dispersion nano modified aluminum alloy, and preparation method and application thereof - Google Patents
High-strength high-dispersion nano modified aluminum alloy, and preparation method and application thereof Download PDFInfo
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- CN111534724B CN111534724B CN202010502235.6A CN202010502235A CN111534724B CN 111534724 B CN111534724 B CN 111534724B CN 202010502235 A CN202010502235 A CN 202010502235A CN 111534724 B CN111534724 B CN 111534724B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
Abstract
The invention discloses a high-strength high-dispersion nano modified aluminum alloy, a preparation method and application thereof. The high-strength and high-dispersion nano modified aluminum alloy is used for manufacturing nano modified aluminum alloy hardware. The preparation method comprises the following steps: step 1: carrying out ultrasonic oscillation dispersion on the carbon nano tube in deionized water, and then carrying out drying and filtering treatment by using a centrifugal machine; step 2: grinding the dispersed, dried and filtered carbon nano tube and organic resin particles to synthesize nano modified powder resin; and step 3: spraying the nano modified powder resin on the surface of an aluminum sheet; and 4, step 4: and carrying out hot pressing treatment on the aluminum sheet sprayed with the nano modified powder resin to form a nano modified aluminum alloy finished product. The carbon nano tube modified aluminum alloy material manufactured by the method has the characteristics of strict structure and excellent performance.
Description
Technical Field
The invention belongs to the technical field of aluminum alloy preparation, and particularly relates to a high-strength high-dispersion nano modified aluminum alloy, and a preparation method and application thereof.
Technical Field
At present, the aluminum alloy has the advantages of light weight, softness, good strength, good corrosion resistance, good processing performance, easy regeneration and the like, is a non-ferrous metal structural material which is most widely applied in industry, and is widely applied to aviation, aerospace, automobile, mechanical manufacturing, ships and chemical industry. However, with the development of science and technology, the pursuit of various industries for the mechanical properties of aluminum alloys is increasingly enhanced, and the traditional aluminum alloys cannot meet the high-performance requirements of components such as novel equipment and tools. The nanometer modified composite material has ultrahigh performance characteristics, so that the nanometer modified composite material is a research hotspot in the direction of the current materials. However, the nano material is difficult to disperse and agglomerate, and the advantage of the nano material in the aluminum alloy matrix is difficult to exert.
Disclosure of Invention
The invention aims to provide a high-strength high-dispersion nano modified aluminum alloy, a preparation method and application thereof aiming at the technical problems.
In order to achieve the purpose, the invention designs a high-strength high-dispersion nano modified aluminum alloy, which comprises a nano modified powder resin layer and a first aluminum sheet, wherein the nano modified powder resin layer is sprayed on the upper surface of the first aluminum sheet, the top surface of the nano modified powder resin layer can be coated on the lower surface of the second aluminum sheet, and the lower surface of the first aluminum sheet can be coated with another nano modified powder resin layer.
The thickness of the nano modified powder resin layer is 50-200 mu m, the thickness of the first aluminum sheet is 100-1000 mu m, and the thickness of the second aluminum sheet is 100-1000 mu m.
The preparation method of the high-strength high-dispersion nano modified aluminum alloy is characterized by comprising the following steps of:
step 1: carrying out ultrasonic oscillation dispersion on the carbon nano tube by using an ultrasonic cell crusher, and then (filtering and drying the dispersed carbon nano tube) to pre-disperse the agglomerated carbon nano tube;
step 2: the dispersed, dried and filtered carbon nano tubes and organic resin particles are ground into nano modified powder resin by using a double-screw extruder, and the powder resin particles have a pinning effect on the dispersed carbon nano tubes and prevent the carbon nano tubes from reuniting again;
and step 3: spraying the nano modified powder resin on the surface of an aluminum sheet;
and 4, step 4: and carrying out hot pressing treatment on the aluminum sheet sprayed with the nano modified powder resin by using vacuum hot pressing equipment to ensure that the carbon nano tubes are uniformly distributed in the aluminum matrix to form a nano modified aluminum alloy finished product.
In step 1 of the above technical scheme, the carbon nanotubes are dispersed in deionized water by ultrasonic oscillation using an ultrasonic cell crusher, filtered by a centrifuge, filtered to remove deionized water, and then dried by an oven.
In the step 3 of the technical scheme, the nano modified powder resin is sprayed on the surface of the aluminum sheet by using the electrostatic spray gun, and the powder coating uses the electrostatic spray gun to charge the sprayed powder particles, so that the powder coating can be well adsorbed on the surface of the aluminum sheet.
In the step 4 of the above technical scheme, the aluminum sheet sprayed with the nano modified powder resin is hot-pressed in a staggered lamination mode, that is, a staggered lamination structure of one layer of aluminum and one layer of coating is adopted during hot-pressing, so that the carbon nanotubes can be uniformly distributed in the aluminum matrix as much as possible.
In the step 1 of the technical scheme, the pipe diameter (diameter) of the carbon nano tube is 40-80 nm.
In the technical scheme, the ultrasonic oscillation time in the step 1 is 30-120 min, and the ultrasonic frequency range used by the ultrasonic oscillation is 50-200 Hz.
In the step 2 of the technical scheme, the double-screw extrusion speed of the double-screw extruder is 5-50 r/min.
The type of the organic resin particles in step 2 of the above technical scheme is one or more of epoxy resin particles, silicone resin particles, polyurethane resin particles, and acrylic resin particles, and different resins have different compatibility with the carbon nanotubes, and can be selected according to the actual application environment.
The hot pressing temperature in the step 4 of the technical scheme is 400-600 ℃.
The application of the high-strength high-dispersion nano modified aluminum alloy is characterized in that: the high-strength high-dispersion nano modified aluminum alloy is used for manufacturing a nano modified aluminum alloy fitting, and the dispersion of the carbon nano tubes in the aluminum matrix has a dispersion strengthening effect, so that the nano modified aluminum alloy fitting has excellent tensile strength.
The invention has the beneficial effects that:
according to the invention, organic resin particles are combined with pre-dispersed carbon nanotubes, and the nano modified powder particles are sprayed on the surface of an aluminum plate to shape the carbon nanotubes to a certain extent, so that the powder resin particles have a pinning effect on the dispersed carbon nanotubes, the carbon nanotubes are prevented from reuniting again, and the excellent dispersion state of the carbon nanotubes in an aluminum matrix is effectively ensured;
the invention adopts the staggered and laminated mode for hot pressing, ensures the uniform distribution of the carbon nano tubes in the aluminum matrix, and greatly ensures the uniform components of the final finished product;
the preparation process disclosed by the invention is simple in required equipment, low in cost, convenient to operate, short in preparation period, green, environment-friendly and pollution-free in used raw materials, and suitable for industrial batch production.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a block diagram of a process flow of the present invention;
wherein, 1-nanometer modified powder resin layer, 2-first aluminum sheet, 3-second aluminum sheet.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
the first embodiment is as follows:
as shown in fig. 1, the present invention provides a high-strength high-dispersion nano modified aluminum alloy, which comprises a nano modified powder resin layer 1 and a first aluminum sheet 2, wherein the nano modified powder resin layer 1 is sprayed on the upper surface of the first aluminum sheet 2. The top surface of the nano modified powder resin layer 1 can be coated on the lower surface of the second aluminum sheet 3, and the lower surface of the first aluminum sheet 2 can be coated with another nano modified powder resin layer 1 to form a staggered laminated structure. The high-strength and high-dispersion nano modified aluminum alloy is used for manufacturing a nano modified aluminum alloy hardware fitting.
The nano modified powder resin layer can be prepared according to the preparation method embodiment in the application, and is coated on each layer of aluminum sheet according to the steps in the preparation method embodiment.
The thickness of the nano modified powder resin layer 1 is 50-200 mu m, the thickness of the first aluminum sheet 2 is 100-1000 mu m, and the thickness of the second aluminum sheet 3 is 100-1000 mu m. As shown in fig. 2, the preparation method of the high-strength high-dispersion carbon nanotube modified aluminum alloy material of the present invention comprises the following steps:
step 1: dispersing carbon nanotubes with the pipe diameter of 60nm in deionized water by using an ultrasonic cell crusher to perform ultrasonic oscillation with the frequency of 50Hz for 90min, filtering by using a centrifugal machine, filtering to remove the deionized water, and drying by using an oven;
step 2: grinding the dispersed carbon nano tubes and epoxy resin particles into nano modified powder resin at the rotating speed of 30r/min by using a double-screw extruder;
and step 3: spraying the nano modified powder resin on the surface of an aluminum sheet by using an electrostatic spray gun, wherein the spraying thickness is 100 mu m, and the thickness of the aluminum sheet is 100 mu m;
and 4, step 4: finally, the aluminum sheet is hot pressed at 550 ℃ to form a final finished product.
Example two:
the preparation method according to the first embodiment is different from the first embodiment in that the diameter of the carbon nanotube in the step 1 is 40nm, and the ultrasonic frequency used for ultrasonic oscillation is 80 Hz.
Example three:
the preparation method according to the first embodiment is different from the first embodiment in that the diameter of the carbon nanotube in the step 1 is 50nm, and the ultrasonic frequency used for ultrasonic oscillation is 100 Hz.
Example four:
the preparation method according to the first embodiment is different from the first embodiment in that the diameter of the carbon nanotube in the step 1 is 80nm, and the ultrasonic frequency used for ultrasonic oscillation is 200 Hz.
Example five:
the preparation was carried out by following the procedure of example one, except that the ultrasonic oscillation time in step 1 was 30 min.
Example six:
the preparation was carried out by following the procedure of example one, except that the ultrasonic oscillation time in step 1 was 60 min.
Example seven:
the preparation was carried out by following the procedure of example one, except that the ultrasonic oscillation time in step 1 was 120 min.
Example eight:
the preparation method is carried out according to the steps of the first embodiment, and the difference from the first embodiment is that the twin-screw extrusion speed in the step 2 is 5 r/min.
Example nine:
the preparation was carried out according to the procedure of example one, except that the twin-screw extrusion rate in step 2 was 15 r/min.
Example ten:
the preparation was carried out according to the procedure of example one, except that the twin-screw extrusion rate in step 2 was 50 r/min.
Example eleven:
prepared according to the procedure of example one, except that the coating thickness in step 3 was 50 μm and the aluminum sheet thickness was 100 μm.
Example twelve:
prepared according to the procedure of example one, except that the coating thickness in step 3 was 150 μm and the aluminum sheet thickness was 500 μm.
Example thirteen:
prepared according to the procedure of example one, except that the coating thickness in step 3 was 200 μm and the aluminum sheet thickness was 1000 μm.
Example fourteen:
the preparation was carried out according to the procedure of example one, except that the hot pressing temperature in the step 4 was 400 ℃.
Example fifteen:
the preparation was carried out according to the procedure of example one, except that the hot pressing temperature in the step 4 was 500 ℃.
Example sixteen:
the preparation was carried out according to the procedure of example one, except that the hot pressing temperature in the step 4 was 600 ℃.
The mechanical properties of the high-strength and high-dispersion carbon nanotube modified aluminum alloy materials prepared in the first to the sixteenth embodiments are tested, and the tensile strength is shown in table one:
| sample (I) | Tensile strength (MPa) |
| Example one | 750 |
| Example two | 703 |
| EXAMPLE III | 712 |
| Example four | 722 |
| EXAMPLE five | 708 |
| EXAMPLE six | 714 |
| EXAMPLE seven | 719 |
| Example eight | 733 |
| Example nine | 728 |
| Example ten | 717 |
| EXAMPLE eleven | 701 |
| Example twelve | 706 |
| EXAMPLE thirteen | 726 |
| Example fourteen | 714 |
| Example fifteen | 742 |
| Example sixteen | 735 |
As can be seen from table one, the carbon nanotube modified aluminum alloy materials with high strength and high dispersion prepared in the first to sixteenth embodiments respectively use the pipe diameter of the carbon nanotube, the ultrasonic dispersion time, the twin-screw extrusion speed, the thickness of the spraying coating, and the hot pressing temperature as variables, and through comparative experiments, the tensile strength of the aluminum alloy obtained by using the process parameters in the first embodiment can reach 750MPa, which is superior to that of the aluminum alloy obtained in the other embodiments. Therefore, the recipe of example one can be selected as the optimal process parameter.
While the embodiments of the present invention have been described, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention as defined by the appended claims.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (4)
1. A preparation method of a high-strength high-dispersion nano modified aluminum alloy is characterized by comprising the following steps: the aluminum alloy material comprises a nano modified powder resin layer (1) and a first aluminum sheet (2), wherein the nano modified powder resin layer (1) is sprayed on the upper surface of the first aluminum sheet (2);
the preparation method of the nano modified aluminum alloy comprises the following steps:
step 1: carrying out ultrasonic oscillation dispersion on the carbon nano tube, and then carrying out drying and filtering treatment;
step 2: grinding the dispersed, dried and filtered carbon nano tube and organic resin particles to synthesize nano modified powder resin;
and step 3: spraying the nano modified powder resin on the surface of an aluminum sheet;
and 4, step 4: carrying out hot pressing treatment on the aluminum sheet sprayed with the nano modified powder resin to form a nano modified aluminum alloy finished product;
in the step 3, the nano modified powder resin is sprayed on the surface of the aluminum sheet by using an electrostatic spray gun;
in the step 4, the aluminum sheet sprayed with the nano modified powder resin is subjected to hot pressing treatment in a staggered and laminated mode;
the top surface of the nano modified powder resin layer (1) can be coated on the lower surface of the second aluminum sheet (3), and the lower surface of the first aluminum sheet (2) can be coated with another nano modified powder resin layer (1);
the thickness of the nano modified powder resin layer (1) is 50-200 mu m, the thickness of the first aluminum sheet (2) is 100-1000 mu m, and the thickness of the second aluminum sheet (3) is 100-1000 mu m;
in the step 2, the carbon nano tubes which are dispersed, dried and filtered and organic resin particles are ground into nano modified powder resin by using a double-screw extruder;
the pipe diameter of the carbon nano tube in the step 1 is 40-80 nm;
the time of ultrasonic oscillation in the step 1 is 30-120 min, and the frequency of ultrasonic waves used for ultrasonic oscillation is 50-200 Hz; the double-screw extrusion speed of the double-screw extruder in the step 2 is 5-50 r/min; and the hot pressing temperature in the step 4 is 400-600 ℃.
2. The method for preparing the high-strength high-dispersion nano modified aluminum alloy according to claim 1, characterized in that: in the step 1, the carbon nano tube is dispersed in deionized water by ultrasonic oscillation by an ultrasonic cell crusher, filtered by a centrifuge, filtered to remove the deionized water, and dried by an oven.
3. The method for preparing the high-strength high-dispersion nano modified aluminum alloy according to claim 1, characterized in that: the organic resin particles in the step 2 are one or more of epoxy resin particles, silicone resin particles, polyurethane resin particles and acrylic resin particles.
4. Use of the high-strength high-dispersion nano-modified aluminum alloy according to claim 1, wherein: the high-strength and high-dispersion nano modified aluminum alloy is used for manufacturing a nano modified aluminum alloy hardware fitting.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202071468U (en) * | 2011-05-24 | 2011-12-14 | 苏州扬子江新型材料股份有限公司 | High hardness coating steel plate enhanced by carbon nano tubes |
| CN104385716A (en) * | 2014-10-30 | 2015-03-04 | 苏州莱特复合材料有限公司 | Metal resin composite material and preparing method thereof |
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| WO2006124769A2 (en) * | 2005-05-13 | 2006-11-23 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of The University Of Oregon | Method for functionalizing surfaces |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202071468U (en) * | 2011-05-24 | 2011-12-14 | 苏州扬子江新型材料股份有限公司 | High hardness coating steel plate enhanced by carbon nano tubes |
| CN104385716A (en) * | 2014-10-30 | 2015-03-04 | 苏州莱特复合材料有限公司 | Metal resin composite material and preparing method thereof |
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