阅读说明：本技术 一种铝模板用轻量化独立支撑及其制备方法 (Lightweight independent support for aluminum template and preparation method thereof ) 是由 唐华强 于 2020-12-30 设计创作，主要内容包括：本发明涉及铝合金模板技术领域,尤其涉及一种铝模板用轻量化独立支撑及其制备方法,所述独立支撑包括基体,所述基体的表面设置有耐蚀增强层,所述基体的厚度为1.5-2mm,所述基体包括以下重量百分比的原料：锌3.5-8.5％、铜2.2-3.4％、镁0.9-1.5％、纳米氧化锌1.5-2％、二硼化钛0.6-0.9％、钛2-3％、锆0.3-0.5％、余量为铝,所述耐蚀增强层包括以下重量份原料：改性微晶纳米纤维素25-32份、纳米碳化钨15-20份、纳米氧化钇18-25份、氧化铬12-15份。本发明的一种铝模板用轻量化独立支撑及其制备方法,制备得到的独立支撑,具有更高的强度和抗弯曲能力,且质量更轻,有利于降低工程搬运成本。(The invention relates to the technical field of aluminum alloy templates, in particular to a lightweight independent support for an aluminum template and a preparation method thereof, wherein the independent support comprises a base body, a corrosion-resistant reinforcing layer is arranged on the surface of the base body, the thickness of the base body is 1.5-2mm, and the base body comprises the following raw materials in percentage by weight: 3.5-8.5% of zinc, 2.2-3.4% of copper, 0.9-1.5% of magnesium, 1.5-2% of nano zinc oxide, 0.6-0.9% of titanium diboride, 2-3% of titanium, 0.3-0.5% of zirconium and the balance of aluminum, wherein the corrosion-resistant enhancement layer comprises the following raw materials in parts by weight: 25-32 parts of modified microcrystalline nano-cellulose, 15-20 parts of nano-tungsten carbide, 18-25 parts of nano yttrium oxide and 12-15 parts of chromium oxide. According to the lightweight independent support for the aluminum template and the preparation method thereof, the prepared independent support has higher strength and bending resistance, is lighter in weight, and is beneficial to reducing the engineering carrying cost.)

1. The light-weight independent support for the aluminum template is characterized by comprising a base body, wherein a corrosion-resistant reinforcing layer is arranged on the surface of the base body, and the thickness of the base body is 1.5-2 mm.

2. The aluminum formwork lightweight independent support according to claim 1, wherein the base comprises the following raw materials in percentage by weight: 3.5 to 8.5 percent of zinc, 2.2 to 3.4 percent of copper, 0.9 to 1.5 percent of magnesium, 1.5 to 2 percent of nano zinc oxide, 0.6 to 0.9 percent of titanium diboride, 2 to 3 percent of titanium, 0.3 to 0.5 percent of zirconium and the balance of aluminum.

3. The aluminum formwork lightweight independent support according to claim 2, wherein the base comprises the following raw materials in percentage by weight: 5% of zinc, 2.5% of copper, 1.2% of magnesium, 1.8% of nano zinc oxide, 0.8% of titanium diboride, 3% of titanium, 0.4% of zirconium and the balance of aluminum.

4. The aluminum formwork lightweight independent support according to claim 3, wherein the corrosion-resistant reinforcing layer comprises the following raw materials in parts by weight: 25-32 parts of modified microcrystalline nano-cellulose, 15-20 parts of nano-tungsten carbide, 18-25 parts of nano yttrium oxide and 12-15 parts of chromium oxide.

5. The aluminum formwork lightweight independent support according to claim 4, wherein the corrosion-resistant reinforcing layer comprises the following raw materials in parts by weight: 28 parts of modified microcrystalline nano-cellulose, 16 parts of nano-tungsten carbide, 20 parts of nano-yttrium oxide and 12 parts of chromium oxide.

6. The method for preparing a lightweight independent support for an aluminum formwork according to any one of claims 1 to 5, wherein the method specifically comprises the following steps:

preparing a matrix: melting aluminum, sequentially adding zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium, heating until the aluminum is completely dissolved, keeping the temperature and standing for 5-10min, removing slag and casting to obtain an alloy ingot, and annealing, forging and pressing the alloy ingot, carrying out solid solution treatment and aging treatment to obtain a matrix;

pretreatment: cleaning and degreasing the surface of a substrate, etching the surface of the substrate by ion beams to form a plurality of micropores with the length-diameter ratio of 10:1, immersing the substrate in a protective solution, soaking for 5-10s at the temperature of 50-55 ℃, immediately drying, cleaning, immersing in an etching solution, performing vibration etching for 25-30min under the ultrasonic condition of 190-200kHz, taking out, cleaning and drying to obtain a treated substrate;

compounding: respectively taking modified microcrystalline nano-cellulose, nano-tungsten carbide, nano-yttrium oxide and chromium oxide, ultrasonically vibrating and dispersing in deionized water, adding sodium dodecyl benzene sulfonate, stirring and mixing uniformly to obtain an electrophoresis solution, heating the electrophoresis solution to 45-50 ℃ in a water bath, continuously stirring for 2-3h, taking 304 stainless steel as an anode, taking a treated matrix as a cathode, placing the treated matrix in the electrophoresis solution, carrying out electrophoretic deposition for 4-5min at a stable voltage of 105-125V, simultaneously applying a magnetic field parallel to the matrix during electrophoresis, and obtaining a composite matrix after electrophoresis is finished;

and (3) post-treatment: placing the composite substrate in a muffle furnace, baking for 1-2h at 100 ℃, heating to 250 ℃, performing heat preservation treatment for 45-80min at the pressure of 150-200pa, then introducing air to remove pressure, heating to 380 ℃, performing heat preservation treatment for 30-60min, and cooling to room temperature after treatment.

7. The aluminum formwork lightweight independent support according to claim 6, wherein the protective solution comprises 0.1mol/L potassium permanganate solution.

8. The aluminum template lightweight freestanding support of claim 7, wherein the etching solution comprises: 1-2 wt% of sodium carbonate, 1-1.5 wt% of sodium phosphate, 0.5-1 wt% of sodium metaaluminate, 0.5-1 wt% of sodium dodecyl benzene sulfonate and the balance of deionized water.

9. The aluminum template lightweight independent support according to claim 8, wherein the preparation method of the modified microcrystalline nanocellulose comprises: taking microcrystalline nanocellulose, stirring and dispersing in deionized water to obtain a solution A, taking ferric sulfate hexahydrate and ferrous sulfate heptahydrate, stirring and dissolving in a 0.5mol/L hydrochloric acid solution, adding the solution A after dissolution is finished, stirring and mixing uniformly, dropwise adding a 1.25mol/L sodium hydroxide solution to adjust the pH to 9-10, continuously stirring and reacting for 1-2 hours to obtain a reaction solution, adding 25% hydrochloric acid to adjust the reaction solution to be neutral, collecting by magnetic separation after reaction is finished to obtain a crude product, and washing and drying the crude product to obtain the modified microcrystalline nanocellulose.

Technical Field

The invention relates to the technical field of aluminum alloy templates, in particular to a lightweight independent support for an aluminum template and a preparation method thereof.

Background

The building template is an indispensable building construction material and an important tool, plays an important role in the cast-in-place concrete construction process, and the aluminum alloy template technology has obtained better application effect in the building engineering as a novel template technology. The aluminum alloy template is a new generation template system behind a wood template, a bamboo plywood and a steel template. The aluminum alloy template is a template which is made of aluminum alloy sections as main materials through processes of machining, welding and the like and is suitable for concrete engineering, and is formed by combining a panel, ribs, main section bars, a plane template, a corner template, an early-dismantling device and a supporting device according to the 50mm modulus design, wherein in the supporting device, independent support is widely applied due to the advantages of convenience in application, safety, reliability and high construction speed.

Independent supports in the prior art are optimized by focusing on the integral structure of the independent support mostly, and the optimization of the properties of the independent supports such as light weight is rarely reported. Because of the reusability, the aluminum alloy template can be transported to another place for continuous use after one project is finished, and if the quality of independent support can be reduced, the transportation cost can be greatly reduced, so that the transportation cost is saved, and the construction process is more facilitated. However, in the conventional light weight technology, the effect of reducing the weight is mostly achieved by replacing part of the material with the hollow material, but the strength of the material is often reduced, the bearing capacity is reduced, or the volume is increased in order to ensure the strength.

Disclosure of Invention

In view of the above, the present invention provides a lightweight independent support for an aluminum formwork and a method for manufacturing the lightweight independent support, wherein the lightweight independent support has higher strength and bending resistance, is lighter in weight, and is beneficial to reducing engineering transportation cost.

The invention solves the technical problems by the following technical means:

the light-weight independent support for the aluminum template comprises a base body, wherein a corrosion-resistant reinforcing layer is arranged on the surface of the base body, and the thickness of the base body is 1.5-2 mm.

Further, the matrix comprises the following raw materials in percentage by weight: 3.5 to 8.5 percent of zinc, 2.2 to 3.4 percent of copper, 0.9 to 1.5 percent of magnesium, 1.5 to 2 percent of nano zinc oxide, 0.6 to 0.9 percent of titanium diboride, 2 to 3 percent of titanium, 0.3 to 0.5 percent of zirconium and the balance of aluminum.

In the matrix material, copper has a solid solution strengthening effect, the addition of magnesium can reduce the hot cracking tendency of the matrix, the tensile strength of the matrix is increased, the corrosion resistance and the welding performance are improved, magnesium and zinc can form a strengthening phase, the strength of the matrix is increased, zirconium and aluminum can form aluminum zirconium to precipitate spherical phase particles, the strength of the matrix can be increased by combining titanium diboride, titanium and boron can form intermetallic compounds, the toughness of the matrix is improved, the addition of nano zinc oxide can play a role of a soft template in the processing process, crystal nuclei can be improved, the refinement of crystal grains is induced, the tensile property and the bending resistance are improved, the strength of the matrix is greatly improved through the mutual matching and the synergistic effect among the raw materials, the thickness of the matrix is reduced, and the weight of independent support is further reduced.

Further, the matrix comprises the following raw materials in percentage by weight: 5% of zinc, 2.5% of copper, 1.2% of magnesium, 1.8% of nano zinc oxide, 0.8% of titanium diboride, 3% of titanium, 0.4% of zirconium and the balance of aluminum.

Further, the corrosion-resistant enhancement layer comprises the following raw materials in parts by weight: 25-32 parts of modified microcrystalline nano-cellulose, 15-20 parts of nano-tungsten carbide, 18-25 parts of nano yttrium oxide and 12-15 parts of chromium oxide.

Further, the corrosion-resistant enhancement layer comprises the following raw materials in parts by weight: 28 parts of modified microcrystalline nano-cellulose, 16 parts of nano-tungsten carbide, 20 parts of nano-yttrium oxide and 12 parts of chromium oxide.

The invention also discloses a preparation method of the lightweight independent support for the aluminum template, which comprises the following steps

Preparing a matrix: melting aluminum, sequentially adding zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium, heating until the aluminum is completely dissolved, keeping the temperature and standing for 5-10min, removing slag and casting to obtain an alloy ingot, and annealing, forging and pressing the alloy ingot, carrying out solid solution treatment and aging treatment to obtain a matrix;

pretreatment: cleaning and degreasing the surface of a substrate, etching the surface of the substrate by ion beams to form a plurality of micropores with the length-diameter ratio of 35:1, immersing the substrate in a protective solution, soaking for 5-10s at the temperature of 50-55 ℃, immediately drying, cleaning, immersing in an etching solution, performing vibration etching for 25-30min under the ultrasonic condition of 190-200kHz, taking out, cleaning and drying to obtain a treated substrate;

compounding: respectively taking modified microcrystalline nano-cellulose, nano-tungsten carbide, nano-yttrium oxide and chromium oxide, ultrasonically vibrating and dispersing in deionized water, adding sodium dodecyl benzene sulfonate, stirring and mixing uniformly to obtain an electrophoresis solution, heating the electrophoresis solution to 45-50 ℃ in a water bath, continuously stirring for 2-3h, taking 304 stainless steel as an anode, taking a treated matrix as a cathode, placing the treated matrix in the electrophoresis solution, carrying out electrophoretic deposition for 4-5min at a stable voltage of 105-125, applying a magnetic field parallel to the matrix at the position of the matrix after carrying out electrophoresis for 2min, and obtaining a composite matrix after finishing electrophoresis;

and (3) post-treatment: placing the composite substrate in a muffle furnace, baking for 1-2h at 100 ℃, heating to 250 ℃, performing heat preservation treatment for 45-80min at the pressure of 150-200pa, then introducing air to remove pressure, heating to 380 ℃, performing heat preservation treatment for 30-60min, and cooling to room temperature after treatment.

The preparation method of the independent support comprises the steps of firstly forming micropores with high length-diameter ratio on the surface of a substrate through ion beam etching after the substrate is obtained, then immersing the substrate into a protective solution, treating only the front end part of each micropore by the protective solution due to the short treatment time and the structure with high length-diameter ratio of each micropore, immersing the protective solution into the etching solution, ensuring that the front end of each micropore can not react with the etching solution, treating the rear end of each micropore by the protective solution, performing secondary etching on the rear end of each micropore under the action of ultrasonic waves, enlarging the pore diameter, integrally forming the micropore into a stepped hole structure, performing a compounding step, depositing modified microcrystalline nanocellulose, nano tungsten carbide, nano yttrium oxide and chromium oxide into the micropores through electrophoresis treatment, and performing post-treatment on the surface of the substrate to form an enhanced corrosion-resistant layer, wherein the bonding force between the enhanced corrosion-resistant layer and the substrate is strong due to the stepped hole structure of each micropore, is not easy to fall off in the using process.

In addition, in the pretreatment process, after the substrate is immersed in the etching solution, the etching solution can be promoted to enter the micropores by combining ultrasonic treatment, the etching solution in the micropores can be promoted to vibrate under the action of ultrasonic vibration, the pore diameter can be enlarged better, the nano tungsten carbide and the chromium oxide have higher hardness and better corrosion resistance, the mechanical strength of the corrosion-resistant enhancement layer can be improved by adding the nano yttrium oxide, the modified microcrystalline nano cellulose also has higher strength after treatment, and a compact structure can be formed on the corrosion-resistant layer on the surface of the substrate by the post-treatment step, so that the internal substrate can be protected more effectively, and the strength and the corrosion resistance can be improved.

Further, the protective solution comprises 0.1mol/L potassium permanganate solution.

Further, the etching solution includes: 1-2 wt% of sodium carbonate, 1-1.5 wt% of sodium phosphate, 0.5-1 wt% of sodium metaaluminate, 0.5-1 wt% of sodium dodecyl benzene sulfonate and the balance of deionized water.

Further, the preparation method of the modified microcrystalline nano-cellulose comprises the following steps: taking microcrystalline nanocellulose, stirring and dispersing in deionized water to obtain a solution A, taking ferric sulfate hexahydrate and ferrous sulfate heptahydrate, stirring and dissolving in a 0.5mol/L hydrochloric acid solution, adding the solution A after dissolution is finished, stirring and mixing uniformly, dropwise adding a 1.25mol/L sodium hydroxide solution to adjust the pH to 9-10, continuously stirring and reacting for 1-2 hours to obtain a reaction solution, adding 25% hydrochloric acid to adjust the reaction solution to be neutral, collecting by magnetic separation after reaction is finished to obtain a crude product, and washing and drying the crude product to obtain the modified microcrystalline nanocellulose.

The modified microcrystalline nanocellulose has magnetism by ferroferric oxide loaded on the surface of the microcrystalline nanocellulose through a hydrothermal reaction, and in the compounding step, the microcrystalline nanocellulose deposited on the surface of the base body can be arranged in parallel by applying a magnetic field parallel to the base body during electrophoretic deposition, so that the structure can further improve the reinforcing effect of the corrosion-resistant reinforcing layer on the base body.

The invention has the beneficial effects that:

(1) the aluminum template provided by the invention is lightweight and independent, has the advantages of light weight, high strength and better bending resistance, and compared with the existing independent support, the aluminum template has the advantages that the mass is reduced by 40%, and the transverse deflection value is less than 3 mm.

(2) The light independent support for the aluminum template provided by the invention has the advantages that the bearing capacity is improved by 2 times, and further, the safety coefficient of construction is improved.

Detailed Description

The present invention will be described in detail with reference to specific examples below:

the light-weight independent support for the aluminum template comprises a base body, wherein a corrosion-resistant enhancement layer is arranged on the surface of the base body, and the thickness of the base body is 1.5-2 mm.

The preparation method of the lightweight independent support for the aluminum template comprises the following steps:

example one

Preparation of modified microcrystalline nanocellulose

Taking microcrystalline nano-cellulose, stirring and dispersing the microcrystalline nano-cellulose in deionized water to obtain a solution A with the mass concentration of the microcrystalline nano-cellulose of 5g/L, respectively taking ferric sulfate hexahydrate and ferrous sulfate heptahydrate, stirring and dissolving the ferric sulfate hexahydrate and the ferrous sulfate heptahydrate in a 0.5mol/L hydrochloric acid solution, the concentration of ferric sulfate hexahydrate in the hydrochloric acid solution is 0.05mol/L, the concentration of ferrous sulfate heptahydrate is 0.1mol/L, after the dissolution is finished, the solution is added into the solution A and the solution A, the mass ratio of ferric sulfate hexahydrate to microcrystalline nanocellulose is 1:0.65, stirring and mixing uniformly, dropwise adding 1.25mol/L sodium hydroxide solution to adjust the pH value to 9-10, continuously stirring and reacting for 1-2h to obtain a reaction solution, adding 25% hydrochloric acid to adjust the reaction solution to be neutral, performing magnetic separation and collection after the reaction is completed to obtain a crude product, and washing and drying the crude product to obtain the modified microcrystalline nanocellulose.

Preparing a matrix: respectively weighing zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium according to the mass percentage of 5%, 2.5%, 1.2%, 1.8%, 0.8%, 3% and 0.5%, and the balance being aluminum; melting aluminum according to the existing method, sequentially adding zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium, heating until the aluminum is completely dissolved, keeping the temperature and standing for 10min, removing slag and casting to obtain an alloy ingot, and annealing, forging and pressing the alloy ingot, carrying out solid solution treatment and aging treatment according to the existing method to obtain a matrix with the wall thickness of 1.5 mm;

pretreatment: cleaning and deoiling the surface of a substrate, performing ion beam etching on the surface of the substrate by using an argon ion beam under the conditions of ion energy of 500ev, ion beam current of 100mA, acceleration voltage of 250V and working pressure of 200Pa to form a plurality of micropores with the length-diameter ratio of 10:1, then immersing the substrate into a 0.1mol/L potassium permanganate solution of a protective solution, soaking for 10s at the temperature of 55 ℃, immediately drying, cleaning, immersing into an etching solution containing 2 wt% of sodium carbonate, 1.2 wt% of sodium phosphate, 0.8 wt% of sodium metaaluminate, 0.5 wt% of sodium dodecyl benzene sulfonate and the balance of deionized water, performing vibration etching for 30min under the ultrasonic condition of 200kHz, taking out, cleaning and drying to obtain a treated substrate;

compounding: respectively taking 28 parts by weight of modified microcrystalline nano-cellulose, 16 parts by weight of nano-tungsten carbide, 20 parts by weight of nano-yttrium oxide and 112 parts by weight of chromium oxide, ultrasonically oscillating and dispersing in 150 parts by weight of deionized water, adding 5 parts by weight of sodium dodecyl benzene sulfonate, stirring and mixing uniformly to obtain an electrophoresis solution, heating the electrophoresis solution in a water bath to 50 ℃, continuously stirring for 2 hours, taking 304 stainless steel as an anode, taking a processed matrix as a cathode, placing the processed matrix in the electrophoresis solution, carrying out electrophoretic deposition for 5 minutes at a stable voltage of 120V, simultaneously applying a magnetic field with a magnetic field intensity of 750A/m parallel to the matrix during electrophoresis, and obtaining a composite matrix after electrophoresis is finished;

and (3) post-treatment: placing the composite substrate in a muffle furnace, baking for 2h at 100 ℃, heating to 250 ℃, performing heat preservation treatment for 80min at 180pa, then introducing air to remove pressure, heating to 380 ℃, performing heat preservation treatment for 60min, and cooling to room temperature after treatment.

Example two

The preparation of the modified microcrystalline nanocellulose was the same as in example one.

Preparing a matrix: respectively weighing zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium according to the mass percentage of 3.5%, 3.4%, 1.5%, 0.6%, 3% and 0.3%, and the balance being aluminum; melting aluminum according to the existing method, sequentially adding zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium, heating until the aluminum is completely dissolved, keeping the temperature and standing for 5min, removing slag and casting to obtain an alloy ingot, and annealing, forging and pressing the alloy ingot, carrying out solid solution treatment and aging treatment according to the existing method to obtain a matrix with the wall thickness of 2 mm;

pretreatment: cleaning and deoiling the surface of a substrate, performing ion beam etching on the surface of the substrate by using an argon ion beam under the conditions that the ion energy is 490ev, the ion beam current is 95mA, the acceleration voltage is 350V and the working pressure is 200Pa to form a plurality of micropores with the length-diameter ratio of 10:1, then soaking the substrate in a 0.1mol/L potassium permanganate solution of a protective solution for 5s at the temperature of 55 ℃, immediately drying the substrate by spin-drying the substrate, cleaning the substrate, soaking the substrate in an etching solution comprising 1.2 wt% of sodium carbonate, 1 wt% of sodium phosphate, 0.5 wt% of sodium metaaluminate, 1 wt% of sodium dodecyl benzene sulfonate and the balance of deionized water, performing vibration etching for 28min under the ultrasonic condition of 195kHz, taking out the substrate, cleaning the substrate and drying the substrate to;

compounding: taking 32 parts by weight of modified microcrystalline nano-cellulose, 15 parts by weight of nano-tungsten carbide, 25 parts by weight of nano-yttrium oxide and 14 parts by weight of chromium oxide, respectively, ultrasonically oscillating and dispersing in 150 parts by weight of deionized water, adding 5 parts by weight of sodium dodecyl benzene sulfonate, stirring and mixing uniformly to obtain an electrophoresis solution, heating the electrophoresis solution in a water bath to 50 ℃, continuously stirring for 2 hours, taking 304 stainless steel as an anode, taking a processed matrix as a cathode, placing the processed matrix in the electrophoresis solution, carrying out electrophoretic deposition for 5 minutes at a stable voltage of 105V, simultaneously applying a magnetic field with a magnetic field intensity of 500A/m parallel to the matrix during electrophoresis, and obtaining a composite matrix after electrophoresis is finished;

and (3) post-treatment: placing the composite substrate in a muffle furnace, baking for 1h at 100 ℃, heating to 250 ℃, performing heat preservation treatment for 80min at 150pa, then introducing air to remove pressure, heating to 380 ℃, performing heat preservation treatment for 45min, and cooling to room temperature after treatment.

EXAMPLE III

The preparation of the modified microcrystalline nanocellulose was the same as in example one.

Preparing a matrix: respectively weighing zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium according to the mass percentages of 8.5%, 2.2%, 0.9%, 2% and 0.5%, and the balance being aluminum; melting aluminum according to the existing method, sequentially adding zinc, copper, magnesium, nano zinc oxide, titanium diboride, titanium and zirconium, heating until the aluminum is completely dissolved, keeping the temperature and standing for 8min, removing slag and casting to obtain an alloy ingot, and annealing, forging and pressing the alloy ingot, carrying out solid solution treatment and aging treatment according to the existing method to obtain a matrix with the wall thickness of 1.5 mm;

pretreatment: cleaning and deoiling the surface of a substrate, performing ion beam etching on the surface of the substrate by using an argon ion beam under the conditions that the ion energy is 510ev, the ion beam current is 115mA, the accelerating voltage is 400V and the working pressure is 200Pa to form a plurality of micropores with the length-diameter ratio of 10:1, then soaking the substrate into a 0.1mol/L potassium permanganate solution of a protective solution, soaking for 10s at the temperature of 50 ℃, immediately drying, cleaning, soaking into an etching solution comprising 1 wt% of sodium carbonate, 1.5 wt% of sodium phosphate, 1 wt% of sodium metaaluminate, 0.8 wt% of sodium dodecyl benzene sulfonate and the balance of deionized water, performing vibration etching for 30min under the ultrasonic condition of 190kHz, taking out, cleaning and drying to obtain a treated substrate;

compounding: respectively taking 25 parts by weight of modified microcrystalline nano-cellulose, 20 parts by weight of nano-tungsten carbide, 18 parts by weight of nano-yttrium oxide and 15 parts by weight of chromium oxide, ultrasonically oscillating and dispersing in 150 parts by weight of deionized water, adding 5 parts by weight of sodium dodecyl benzene sulfonate, stirring and mixing uniformly to obtain an electrophoresis solution, heating the electrophoresis solution in a water bath to 45 ℃, continuously stirring for 3 hours, taking 304 stainless steel as an anode, taking a processed matrix as a cathode, placing the processed matrix in the electrophoresis solution, carrying out electrophoretic deposition for 4 minutes at a stable voltage of 125V, simultaneously applying a magnetic field with a magnetic field intensity of 850A/m parallel to the matrix during electrophoresis, and obtaining a composite matrix after electrophoresis is finished;

and (3) post-treatment: placing the composite substrate in a muffle furnace, baking for 1.5h at 100 ℃, heating to 250 ℃, carrying out heat preservation treatment for 45min at 200pa, then introducing air to remove pressure, heating to 380 ℃, carrying out heat preservation treatment for 30min, and cooling to room temperature after treatment.

Example four

This example is different from the first example in that the modified microcrystalline nanofibers are replaced with conventional microcrystalline nanofibers.

EXAMPLE five

This example is different from the first example in that no magnetic field is applied to the substrate during the electrophoresis in the recombination step.

EXAMPLE six

This embodiment is different from the first embodiment in that only the substrate is ion beam etched in the pretreatment step.

The aluminum alloy independent supports prepared in the first to sixth examples and the commercially available independent supports were tested for quality, bearing capacity, strength and deflection by the prior art, and the test results are as follows:

from the data, the weight of the independent support prepared by the method is reduced by about 40% compared with the weight of the existing aluminum alloy independent support, the bearing capacity of the independent support is improved by about 2 times, the deflection is reduced to be less than 3mm, and the yield strength and the tensile strength of the independent support are superior to those of the existing independent support.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.