CN113416993A - Nano metal material with strong electrical insulation and preparation method thereof - Google Patents
Nano metal material with strong electrical insulation and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a nano metal material with strong electrical insulation and a preparation method thereof, wherein nano-scale particles of titanium alloy metal particles are adsorbed on the surface of a conductive magnet to carry out anodic oxidation, and a titanium dioxide passivation film is generated on the surface of the particles during anodic oxidation, so that the electron transfer rate on the surface of the titanium alloy metal particles is reduced, and the titanium alloy nano metal particles are not conductive; when hot isostatic pressing is carried out for forming, inert gas is introduced for three times, and heat preservation is carried out for three times, so that the prepared nano metal material has larger gaps, lighter weight and thinner thickness surface; the liquid organosilicon modified acrylic resin is brushed on the surface layer of the molded nano metal material and is immediately put into cold water for cooling, and the organosilicon modified acrylic resin is coated on the outer layer of the nano metal material in such a way, so that the surface energy is reduced, marine organisms are difficult to attach or fall off easily after attachment, and the antifouling effect is achieved.
Description
Technical Field
The invention relates to the field of new materials, in particular to a nano metal material with strong electrical insulation and a preparation method thereof.
Background
When a ship sails on the ocean, the part in contact with the seawater is not only strongly corroded by the electrochemistry of the seawater, but also polluted by the attachment of marine organisms; seawater is a very strong corrosive medium for steel materials, and many marine organisms and microorganisms can be adsorbed on the surfaces of ship bottoms, propellers, ship pipelines and other metal structures and grow and propagate; the marine organisms and the microorganisms can damage the anti-corrosion protective layer on the surface of the ship body to enable a paint film of the ship body to fall off; the resistance of the ship is increased by being adsorbed on the bottom of the ship and the surface of the propeller, and the oil consumption is increased; the adsorption in the ship pipeline causes the blockage of the pipeline, and some attached organisms have the corrosion effect on the metal; seawater and microbial corrosion reduce the service life of the ship, increase the maintenance and repair costs, and seriously harm the safety of the ship.
The metal is damaged by marine organisms and microorganisms transformed in seawater, and the corrosion of the metal structure can cause the thinning strength of the material to be lower, and sometimes perforation or fracture and even structural damage occur. Therefore, the anticorrosive coating of equipment used in ships requires not only a surface having high electrical insulation but also waterproof properties. Therefore, the research and preparation of the light nano metal material with high electrical insulation and microorganism adhesion prevention as the anticorrosive coating of the ship equipment has great development prospect. Therefore, it is very necessary to prepare a light-weight nano metal material with strong electrical insulation property, which can prevent the adhesion of microorganisms.
Disclosure of Invention
The present invention is directed to a nano-metal material with high electrical insulation to solve the above problems of the background art.
In order to solve the above technical problem, a first aspect of the present invention provides the following technical solutions: a nano-metal material with strong electrical insulation is characterized in that,
the process flow of the nano metal material with strong electrical insulation property comprises the following steps:
crushing titanium alloy powder, removing oil from titanium alloy metal particles, anodizing, molding, preparing organic silicon modified acrylic resin, and coating to obtain a finished product.
Preferably, the method comprises the following specific steps:
(1) placing the titanium alloy powder into a ball mill for ball milling for 15-30 h, and sieving the ball-milled titanium alloy particles by a 100-mesh sieve to obtain nano-grade particle titanium alloy metal particles;
(2) wiping off oil stains on the surfaces of the nano titanium alloy metal particles by using ethyl acetate or acetone, cleaning by using deionized water or distilled water, and drying in a dryer after cleaning;
(3) adsorbing the dried nano titanium alloy metal particles on the surface of a magnet, placing the magnet as an anode and a titanium-based electrode as a cathode in a two-electrode anodic oxidation device, performing the process at room temperature, cutting off a power supply when the particles on the surface of the magnet fall off completely, fishing out the metal particles, performing cathodic polarization, taking out the particles after bubbles in electrolyte disappear, adsorbing the nano titanium alloy metal particles on the magnet again, and performing anodic oxidation again to prepare the titanium alloy nano metal particles with strong electrical insulation property;
(4) placing the titanium alloy nano metal particles with strong electrical insulation property prepared in the step (3) in an up-down telescopic closed container, forming by using a special hot isostatic pressing technology, adjusting the temperature and the pressure, introducing inert gas when heating, stabilizing, and performing primary heat preservation; when the closed container is contracted to be not changed any more, introducing the inert gas again to recover the closed container, and carrying out secondary heat preservation; when the closed container is contracted to be unchanged, introducing inert gas again to recover the closed container, carrying out third heat preservation, and cooling to obtain a formed nano metal material;
(5) preparing an organic silicon modified acrylic resin solution;
(6) brushing the organosilicon modified acrylic resin solution prepared in the step (5) on the surface layer of the formed nano titanium alloy metal material, immediately putting the nano titanium alloy metal material into cold water, cooling to room temperature, and drying to obtain a finished product.
Preferably, in the step (3): the current density of the constant current anodic oxidation is 1-2 mA/cm2The anodic oxidation potential is 2-100V, and the cathodic polarization potential is-100 to-2V.
Preferably, in the step (3): the anodic oxidation time is 0.5-1 h; the cathode polarization time is 5-10 min.
Preferably, in the step (4): the thickness of the up-down telescopic closed container is 10-40 cm; the temperature is adjusted to 1400-1600 ℃, and the pressure is 30-50 MPa.
Preferably, in the step (4): the first heat preservation time is 1-2 hours, the second heat preservation time is 3-5 hours, and the third heat preservation time is 1-2 hours.
Preferably, in the step (5): the preparation method of the organic silicon modified acrylic resin solution comprises the following steps: uniformly mixing organic silicon, benzoyl peroxide, butyl acrylate, methyl methacrylate and acrylic acid for later use, wherein the mass ratio of the organic silicon to the benzoyl peroxide to the butyl acrylate to the methyl methacrylate to the acrylic acid is 2: 3: 3: 5: and 8, adding dimethylbenzene into a three-neck flask, heating in a water bath to 80 ℃, adding 1/3 of the mixed solution into the flask, keeping the temperature of 75-80 ℃ for reaction for 1h, dropwise adding the rest of the mixed solution by using a continuous dropwise adding method for 3-5 h, reacting at constant temperature for 0.5-1 h after dropwise adding, adding a small amount of benzoyl peroxide, reacting at constant temperature for 0.5-1 h, continuously adding a small amount of benzoyl peroxide, reacting at constant temperature for 2h, and preparing the organic silicon modified acrylic resin solution for heat preservation and standby.
Preferably, in the step (6): brushing the organic silicon modified acrylic resin solution on the surface layer of the molded nano titanium alloy metal material, wherein the thickness of the organic silicon modified acrylic resin solution is 0.05-0.1 mm.
In a second aspect of the present invention, a method for preparing a nano-metal material with strong electrical insulation properties is characterized in that a composite adsorbent prepared by the method for preparing a nano-metal material with strong electrical insulation properties comprises the following raw materials in parts by weight: 40-80 parts of titanium alloy powder and 1-2 parts of organic silicon modified acrylic resin.
Preferably, the organic silicon content in the organic silicon modified acrylic resin is 10-20%.
Compared with the prior art, the invention has the following beneficial effects:
crushing titanium alloy powder by using a mechanical alloying method, sieving to obtain nano-grade particle titanium alloy metal particles, removing oil from the titanium alloy metal particles, adsorbing the titanium alloy metal particles on the surface of a conductive magnet, performing anodic oxidation, performing cathodic polarization after all particles fall off, taking out the titanium alloy metal particles from the conductive magnet, adsorbing the titanium alloy metal particles again after bubbles disappear, and performing anodic oxidation until the required quality of the nano-titanium alloy particles is obtained; a titanium dioxide passivation film is generated on the surface of the particles during anodic oxidation, the resistivity of the titanium dioxide is high, the electron transfer rate on the surface of the titanium alloy metal particles is reduced, the titanium alloy nano metal particles are not conductive, and the titanium dioxide passivation film can be formed on the surface of the magnet along with the anodic oxidation and cannot be conductive; and (3) carrying out cathode polarization after the nano titanium alloy particles completely fall off, reducing hydrogen ions in the solution into hydrogen to escape after passing through titanium dioxide, dissolving a titanium dioxide passivation film, and continuing to prepare the titanium alloy nano metal particles with strong electrical insulation property, wherein the magnet has the conductivity again.
Forming by using a special hot isostatic pressing technology, and preparing nano metal particles into a nano metal material; placing the nano metal particles in a telescopic closed container, introducing inert gas when raising the temperature and boosting the pressure, and preserving the heat for the first time when the temperature and the pressure are fixed; after the closed container is contracted, introducing inert gas again to recover the closed container, and carrying out secondary heat preservation; after the closed container is contracted, introducing inert gas again to recover the closed container, and carrying out heat preservation for the third time; after the third heat preservation, when the closed container shrinks to be unchanged, the temperature is reduced to prepare the nano metal material; the special sintering method ensures that the prepared nano metal material has larger gaps, the weight is lightened, the thickness surface is thin, the buoyancy is increased when the nano metal material is used on a ship body of a ship after an anti-corrosion film is coated, the waterline of the ship is reduced, and the prepared ship equipment can float on the surface of seawater when falling into the seawater, so that the ship equipment is convenient to salvage.
The liquid organosilicon modified acrylic resin is brushed on the surface layer of the molded nano metal material and is immediately put into cold water for cooling, so that the organosilicon modified acrylic resin wraps the nano metal particles on the surface and is instantly cured when flowing into a gap, and the organosilicon modified acrylic resin is wrapped on the outer layer of the nano metal material in such a way, so that the surface energy is reduced, marine organisms are difficult to attach or fall off easily after attachment, and the antifouling effect is achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A nano-metal material with strong electrical insulation is characterized in that,
the process flow of the nano metal material with strong electrical insulation property comprises the following steps:
crushing titanium alloy powder, removing oil from titanium alloy metal particles, anodizing, molding, preparing organic silicon modified acrylic resin, and coating to obtain a finished product.
Preferably, the method comprises the following specific steps:
(1) placing the titanium alloy powder into a ball mill for ball milling for 15-30 h, and sieving the ball-milled titanium alloy particles by a 100-mesh sieve to obtain nano-grade particle titanium alloy metal particles;
(2) wiping off oil stains on the surfaces of the nano titanium alloy metal particles by using ethyl acetate or acetone, cleaning by using deionized water or distilled water, and drying in a dryer after cleaning;
(3) adsorbing the dried nano titanium alloy metal particles on the surface of a magnet, placing the magnet as an anode and a titanium-based electrode as a cathode in a two-electrode anodic oxidation device, performing the process at room temperature, cutting off a power supply when the particles on the surface of the magnet fall off completely, fishing out the metal particles, performing cathodic polarization, taking out the particles after bubbles in electrolyte disappear, adsorbing the nano titanium alloy metal particles on the magnet again, and performing anodic oxidation again to prepare the titanium alloy nano metal particles with strong electrical insulation property;
(4) placing the titanium alloy nano metal particles with strong electrical insulation property prepared in the step (3) in an up-down telescopic closed container, forming by using a special hot isostatic pressing technology, adjusting the temperature and the pressure, introducing inert gas when heating, stabilizing, and performing primary heat preservation; when the closed container is contracted to be not changed any more, introducing the inert gas again to recover the closed container, and carrying out secondary heat preservation; when the closed container is contracted to be unchanged, introducing inert gas again to recover the closed container, carrying out third heat preservation, and cooling to obtain a formed nano metal material;
(5) preparing an organic silicon modified acrylic resin solution;
(6) brushing the organosilicon modified acrylic resin solution prepared in the step (5) on the surface layer of the formed nano titanium alloy metal material, immediately putting the nano titanium alloy metal material into cold water, cooling to room temperature, and drying to obtain a finished product.
Preferably, in the step (3): the current density of the constant current anodic oxidation is 1-2 mA/cm2The anodic oxidation potential is 2-100V, and the cathodic polarization potential is-100 to-2V.
Preferably, in the step (3): the anodic oxidation time is 0.5-1 h; the cathode polarization time is 5-10 min.
Preferably, in the step (4): the thickness of the up-down telescopic closed container is 10-40 cm; the temperature is adjusted to 1400-1600 ℃, and the pressure is 30-50 MPa.
Preferably, in the step (4): the first heat preservation time is 1-2 hours, the second heat preservation time is 3-5 hours, and the third heat preservation time is 1-2 hours.
Preferably, in the step (5): the preparation method of the organic silicon modified acrylic resin solution comprises the following steps: uniformly mixing organic silicon, benzoyl peroxide, butyl acrylate, methyl methacrylate and acrylic acid for later use, wherein the mass ratio of the organic silicon to the benzoyl peroxide to the butyl acrylate to the methyl methacrylate to the acrylic acid is 2: 3: 3: 5: and 8, adding dimethylbenzene into a three-neck flask, heating in a water bath to 80 ℃, adding 1/3 of the mixed solution into the flask, keeping the temperature of 75-80 ℃ for reaction for 1h, dropwise adding the rest of the mixed solution by using a continuous dropwise adding method for 3-5 h, reacting at constant temperature for 0.5-1 h after dropwise adding, adding a small amount of benzoyl peroxide, reacting at constant temperature for 0.5-1 h, continuously adding a small amount of benzoyl peroxide, reacting at constant temperature for 2h, and preparing the organic silicon modified acrylic resin solution for heat preservation and standby.
Preferably, in the step (6): brushing the organic silicon modified acrylic resin solution on the surface layer of the molded nano titanium alloy metal material, wherein the thickness of the organic silicon modified acrylic resin solution is 0.05-0.1 mm.
In a second aspect of the present invention, a method for preparing a nano-metal material with strong electrical insulation properties is characterized in that a composite adsorbent prepared by the method for preparing a nano-metal material with strong electrical insulation properties comprises the following raw materials in parts by weight: 40-80 parts of titanium alloy powder and 1-2 parts of organic silicon modified acrylic resin.
Preferably, the organic silicon content in the organic silicon modified acrylic resin is 10-20%.
Example 1: the first nano-metal material with strong electrical insulation:
a nano metal material with strong electrical insulation property comprises the following components in parts by weight:
the weight fraction of the titanium alloy powder is 40 parts, and the weight fraction of the organosilicon modified acrylic resin is 5 parts.
The preparation method of the nano metal material comprises the following steps:
(1) placing the titanium alloy powder in a ball mill for ball milling for 20h, and sieving the ball-milled titanium alloy particles by a 100-mesh sieve to obtain nano-grade particle titanium alloy metal particles;
(2) wiping off oil stains on the surfaces of the nano titanium alloy metal particles by using ethyl acetate or acetone, cleaning by using deionized water or distilled water, and drying in a dryer after cleaning;
(3) adsorbing the dried nano titanium alloy metal particles on the surface of a magnet, placing the magnet as an anode and a titanium-based electrode as a cathode in a two-electrode anodic oxidation device, and carrying out constant-current anodic oxidation at room temperature with the current density of 1mA/cm2The anodic oxidation potential is 40V, and the anodic oxidation time is 0.5 h; when the particles on the surface of the magnet fall off completely, the power supply is cut off, the metal particles are fished out, cathode polarization is carried out, the cathode polarization potential is minus 40V, the cathode polarization time is 5min, and after bubbles in the electrolyte disappear, the metal particles are taken out and adsorbed on the magnet againCarrying out anodic oxidation on the nano titanium alloy metal particles again to prepare titanium alloy nano metal particles with strong electrical insulation;
(4) placing the titanium alloy nano metal particles with strong electrical insulation property prepared in the step (3) in an up-down telescopic closed container, and forming by using a special hot isostatic pressing technology at the thickness of 10cm, wherein the temperature is adjusted to 1400 ℃, and the pressure is 30 MPa; introducing inert gas during temperature rising, and performing first heat preservation after stabilization, wherein the first heat preservation time is 1 h; when the closed container is contracted to be not changed any more, introducing the inert gas again to recover the closed container, and carrying out secondary heat preservation for 3 hours; when the closed container is contracted to be unchanged, introducing inert gas again to recover the closed container, carrying out third heat preservation for 1h, and cooling to obtain a formed nano metal material;
(5) uniformly mixing organic silicon, benzoyl peroxide, butyl acrylate, methyl methacrylate and acrylic acid for later use, wherein the mass ratio of the organic silicon to the butyl acrylate is 2: 3: 3: 5: adding xylene into a three-neck flask, heating in water bath to 80 ℃, adding 1/3 of the mixed solution into the flask, keeping the temperature at 75 ℃ for reaction for 1h, dropwise adding the rest of the mixed solution by using a continuous dropwise adding method for 3h, reacting at constant temperature for 0.5h after dropwise adding, adding a small amount of benzoyl peroxide, reacting at constant temperature for 0.5h, continuously adding a small amount of benzoyl peroxide, reacting at constant temperature for 2h, and preparing an organic silicon modified acrylic resin solution for heat preservation and standby;
(6) brushing the organosilicon modified acrylic resin solution prepared in the step (5) on the surface layer of the formed nano titanium alloy metal material, wherein the thickness is 0.05mm, immediately putting the nano titanium alloy metal material into cold water, cooling to room temperature, and drying to obtain a finished product.
Example 2: and a second nano metal material with strong electrical insulation:
a nano metal material with strong electrical insulation property comprises the following components in parts by weight:
the titanium alloy powder accounts for 80 parts by weight, and the organosilicon modified acrylic resin accounts for 2 parts by weight.
The preparation method of the nano metal material comprises the following steps:
(1) placing the titanium alloy powder in a ball mill for ball milling for 30h, and sieving the ball-milled titanium alloy particles by a 100-mesh sieve to obtain nano-grade particle titanium alloy metal particles;
(2) wiping off oil stains on the surfaces of the nano titanium alloy metal particles by using ethyl acetate or acetone, cleaning by using deionized water or distilled water, and drying in a dryer after cleaning;
(3) adsorbing the dried nano titanium alloy metal particles on the surface of a magnet, placing the magnet as an anode and a titanium-based electrode as a cathode in a two-electrode anodic oxidation device, and carrying out constant-current anodic oxidation at room temperature with the current density of 2mA/cm2The anodic oxidation potential is 60V, and the anodic oxidation time is 1 h; when all particles on the surface of the magnet fall off, the power supply is disconnected, metal particles are fished out, cathode polarization is carried out, the potential of the cathode polarization is minus 60V, the cathode polarization time is 10min, after bubbles in the electrolyte disappear, the magnet is taken out to adsorb the nano titanium alloy metal particles again, and anodic oxidation is carried out again to prepare the titanium alloy nano metal particles with strong electrical insulation;
(4) placing the titanium alloy nano metal particles with strong electrical insulation property prepared in the step (3) in an up-down telescopic closed container, wherein the thickness of the container is 40cm, and carrying out special hot isostatic pressing technology for forming, wherein the temperature is adjusted to 1600 ℃, and the pressure is 40 MPa; introducing inert gas during temperature rising, and performing first heat preservation for 2 hours after stabilization; when the closed container is contracted to be not changed any more, introducing the inert gas again to recover the closed container, and carrying out secondary heat preservation for 5 hours; when the closed container is contracted to be unchanged, introducing inert gas again to recover the closed container, carrying out third heat preservation for 2 hours, and cooling to obtain a formed nano metal material;
(5) uniformly mixing organic silicon, benzoyl peroxide, butyl acrylate, methyl methacrylate and acrylic acid for later use, wherein the mass ratio of the organic silicon to the butyl acrylate is 2: 3: 3: 5: adding xylene into a three-neck flask, heating in water bath to 80 ℃, adding 1/3 of the mixed solution into the flask, keeping the temperature of 80 ℃ for reaction for 1h, dropwise adding the rest of the mixed solution by using a continuous dropwise adding method for 3h, reacting at constant temperature for 1h after dropwise adding, adding a small amount of benzoyl peroxide, reacting at constant temperature for 1h, continuously adding a small amount of benzoyl peroxide, reacting at constant temperature for 2h, and preparing an organic silicon modified acrylic resin solution for heat preservation and standby;
(6) brushing the organosilicon modified acrylic resin solution prepared in the step (5) on the surface layer of the formed nano titanium alloy metal material, wherein the thickness is 0.1mm, immediately putting the nano titanium alloy metal material into cold water, cooling to room temperature, and drying to obtain a finished product.
Comparative example 1
The formulation of comparative example 1 was the same as example 1. The preparation method of the composite adsorbent for air purification is different from the example 1 only in the difference of the step (4), and the step (4) is modified as follows: and (4) placing the titanium alloy nano metal particles with strong electrical insulation property prepared in the step (3) in an up-down telescopic closed container, wherein the thickness of the container is 40cm, the temperature is adjusted to be 1400 ℃, the pressure is 30MPa, and after heat preservation is carried out for 5 hours, cooling is carried out to obtain the formed nano metal material. The rest of the preparation steps are the same as example 1.
Comparative example 2
Comparative example 2 was formulated as in example 1. The preparation method of the composite adsorbent for air purification is different from the example 1 only in the difference of the step (6), and the step (6) is modified as follows: brushing the organosilicon modified acrylic resin solution prepared in the step (5) on the surface layer of the formed nano titanium alloy metal material, wherein the thickness is 0.05mm, naturally cooling to room temperature, and drying to obtain a finished product. The rest of the preparation steps are the same as example 1.
Test example 1
1. Test method
Example 1 and comparative examples 1 and 2 are comparison tests, and the quality and the thickness of the nano metal material are measured and compared respectively.
2. Test results
Example 1 is compared to comparative example 1 for quality and thickness.
TABLE 1 quality and thickness of composite nanometal materials
| Quality (Kg) | Thickness (cm) | |
| Example 1 | 25.7 | 15.67cm |
| Comparative example 1 | 31.5 | 19.52cm |
| Comparative example 2 | 28.5 | 15.33cm |
By comparing the mass and thickness of the embodiment 1 with those of the comparative example 1, it can be obviously found that the nano metal material prepared in the embodiment 1 has light mass and thin thickness, while the comparative example 2 has relatively long cooling time although the thickness is relatively thin, and the organic silicon modified acrylic resin flows into the nano metal material, so that the nano metal material has relatively large mass.
Test example 2
1. Test method
Example 1 and comparative example 2 are control tests, and the resistivity of the control tests is measured and compared.
2. Test results
Resistivity comparison of example 1 and comparative example 2
TABLE 2 resistivity
| Resistivity (omega. m) | |
| Example 1 | 1020 |
| Comparative example 2 | 10000 |
By comparing the resistivity of the embodiment 1 and the resistivity of the comparative example 2, it can be obviously found that the nano metal material prepared in the embodiment 1 has high resistivity, which shows that the composite nano metal material prepared by the preparation process in the embodiment 1 has strong electrical insulation, while the resistivity of the comparative example 2 is low, which shows that the nano metal material prepared by the invention has certain electrical conductivity, and indicates that the nano metal material prepared by the invention has strong electrical insulation while having light weight and thin thickness.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The preparation method of the nano metal material with strong electrical insulation is characterized in that the process flow for preparing the nano metal material with strong electrical insulation is as follows: crushing titanium alloy powder, removing oil from titanium alloy metal particles, anodizing, molding, preparing organic silicon modified acrylic resin, and coating to obtain a finished product.
2. The method for preparing the nano metal material with strong electrical insulation property according to claim 1, characterized by comprising the following specific steps:
(1) placing the titanium alloy powder into a ball mill for ball milling for 15-30 h, and sieving the ball-milled titanium alloy particles by a 100-mesh sieve to obtain nano-grade particle titanium alloy metal particles;
(2) wiping off oil stains on the surfaces of the nano titanium alloy metal particles by using ethyl acetate or acetone, cleaning by using deionized water or distilled water, and drying in a dryer after cleaning;
(3) adsorbing the dried nano titanium alloy metal particles on the surface of a magnet, placing the magnet as an anode and a titanium-based electrode as a cathode in a two-electrode anodic oxidation device, performing the process at room temperature, cutting off a power supply when the particles on the surface of the magnet fall off completely, fishing out the metal particles, performing cathodic polarization, taking out the particles after bubbles in electrolyte disappear, adsorbing the nano titanium alloy metal particles on the magnet again, and performing anodic oxidation again to prepare the titanium alloy nano metal particles with strong electrical insulation property;
(4) placing the titanium alloy nano metal particles with strong electrical insulation property prepared in the step (3) in an up-down telescopic closed container, forming by using a special hot isostatic pressing technology, adjusting the temperature and the pressure, introducing inert gas when heating, stabilizing, and performing primary heat preservation; when the closed container is contracted to be not changed any more, introducing the inert gas again to recover the closed container, and carrying out secondary heat preservation; when the closed container is contracted to be unchanged, introducing inert gas again to recover the closed container, carrying out third heat preservation, and cooling to obtain a formed nano metal material;
(5) preparing an organic silicon modified acrylic resin solution;
(6) brushing the organosilicon modified acrylic resin solution prepared in the step (5) on the surface layer of the formed nano titanium alloy metal material, immediately putting the nano titanium alloy metal material into cold water, cooling to room temperature, and drying to obtain a finished product.
3. The method for preparing the nano-metal material with strong electrical insulation property according to claim 2, wherein the method comprises the following steps: in the step (3): the current density of the constant current anodic oxidation is 1-2 mA/cm2The anodic oxidation potential is 2-100V, and the cathodic polarization potential is-100 to-2V.
4. The method for preparing the nano-metal material with strong electrical insulation property according to claim 2, wherein the method comprises the following steps: in the step (3): the anodic oxidation time is 0.5-1 h; the cathode polarization time is 5-10 min.
5. The method for preparing the nano-metal material with strong electrical insulation property according to claim 2, wherein the method comprises the following steps: in the step (4): the thickness of the up-down telescopic closed container is 10-40 cm; the temperature is adjusted to 1400-1600 ℃, and the pressure is 30-50 MPa.
6. The method for preparing the nano-metal material with strong electrical insulation property according to claim 2, wherein the method comprises the following steps: in the step (4): the first heat preservation time is 1-2 hours, the second heat preservation time is 3-5 hours, and the third heat preservation time is 1-2 hours.
7. The method for preparing the nano-metal material with strong electrical insulation property according to claim 2, wherein the method comprises the following steps: in the step (5): the preparation method of the organic silicon modified acrylic resin solution comprises the following steps: uniformly mixing organic silicon, benzoyl peroxide, butyl acrylate, methyl methacrylate and acrylic acid for later use, wherein the mass ratio of the organic silicon to the benzoyl peroxide to the butyl acrylate to the methyl methacrylate to the acrylic acid is 2: 3: 3: 5: and 8, adding dimethylbenzene into a three-neck flask, heating in a water bath to 80 ℃, adding 1/3 of the mixed solution into the flask, keeping the temperature of 75-80 ℃ for reaction for 1h, dropwise adding the rest of the mixed solution by using a continuous dropwise adding method for 3-5 h, reacting at constant temperature for 0.5-1 h after dropwise adding, adding a small amount of benzoyl peroxide, reacting at constant temperature for 0.5-1 h, continuously adding a small amount of benzoyl peroxide, reacting at constant temperature for 2h, and preparing the organic silicon modified acrylic resin solution for heat preservation and standby.
8. The method for preparing the nano-metal material with strong electrical insulation property according to claim 2, wherein the method comprises the following steps: in the step (6): brushing the organic silicon modified acrylic resin solution on the surface layer of the molded nano titanium alloy metal material, wherein the thickness of the organic silicon modified acrylic resin solution is 0.05-0.1 mm.
9. The method for preparing the nano-metal material with strong electrical insulation property according to claim 1, wherein the nano-metal material prepared by the method for preparing the nano-metal material with strong electrical insulation property comprises the following raw materials in parts by weight: 40-80 parts of titanium alloy powder and 1-2 parts of organic silicon modified acrylic resin.
10. The composite adsorbent for air purification according to claim 9, wherein: the organic silicon content of the organic silicon modified acrylic resin is 10-20%.
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