Electric field radiation elimination structure, method and electric heating film without electric field radiation

Abstract

The present invention discloses an electric field radiation elimination structure, method and electric heating film without electric field radiation, which relate to the field of electric field shielding technology, including an electric field radiation elimination layer, which is externally connected to a grounding wire, and an electric field adsorption layer is coated on the outer surface of the electric field radiation elimination layer, and the electric field adsorption layer is formed by drying a MXene composite liquid on the outer surface of the electric field radiation elimination layer; the electric field adsorption layer added to the surface of the electric field radiation elimination layer not only greatly improves the electric field shielding energy efficiency of the electric field radiation elimination layer, but also improves the thermal stability of the electric field shielding energy efficiency of the electric field radiation elimination layer, and at the same time, the electric field adsorption layer also greatly increases the oxidation resistance of the electric field radiation elimination layer, thereby increasing the service life of the electric field radiation elimination layer.

Description

Technical Field

[0001] The invention relates to the technical field of electric field shielding, and in particular to an electric field radiation elimination structure and method and an electric heating film without electric field radiation. Background Art

[0002] The electric floor heating used in the market will generate electric field radiation when it is powered on, which is harmful to the human body. Especially as the electric floor heating product is laid under the floor, the user will be in contact with it for a long time, which will have a certain impact on the health.

[0003] The current shielded floor heating, for example, a double-shielded electric heating film and floor heating board disclosed in Chinese patent with authorization announcement number CN218103561U and a heating element of a self-heating floor heating with grounded shielding disclosed in Chinese patent with authorization announcement number CN209994566U, this type of shielded floor heating uses an ordinary shielding layer or is grounded. The ordinary shielding layer has limited electromagnetic adsorption effect, and a certain amount of electromagnetic leakage will occur when grounded, resulting in a weak electromagnetic adsorption effect of the shielded floor heating, and cannot achieve a high electromagnetic shielding energy efficiency. Summary of the invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide an electric field radiation elimination structure, method and electric heating film without electric field radiation, so as to solve the problem in the prior art that the ordinary shielding layer has limited electromagnetic adsorption effect and will produce certain electromagnetic leakage when grounded, resulting in weak electromagnetic adsorption effect of shielded floor heating.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] Specifically, the first aspect of the present invention provides an electric field radiation elimination structure, including an electric field radiation elimination layer, which is externally connected to a grounding wire, and an electric field adsorption layer is coated on the outer surface of the electric field radiation elimination layer, which is dried on the outer surface of the electric field radiation elimination layer.

[0007] As a further solution of the present invention: the preparation method of the MXene composite liquid is:

[0008] Adding the modified MXene powder and the carbon nanotubes into the polymer solution and performing ultrasonic dispersion at 60 degrees Celsius to form a first mixed solution;

[0009] During ultrasonic dispersion, the polymer solution is used to adjust the viscosity of the first mixed solution, and a second mixed solution is formed after the ultrasonic dispersion is completed;

[0010] forming the second mixed solution into nanofibers;

[0011] The nanofibers were added into deionized water and ultrasonically dispersed at room temperature to obtain a MXene composite liquid.

[0012] As a further solution of the present invention: the preparation method of the modified MXene powder is:

[0013] The MXene powder was added to the antioxidant solution and ultrasonically dispersed at 30 degrees Celsius for 20 minutes to form a mixed solution;

[0014] The mixed solution was heated to 50 degrees Celsius and allowed to stand for 4 hours to form a stationary mixed solution;

[0015] The mixed solution was allowed to stand for filtration to obtain a filtrate, and the filtrate was washed with deionized water;

[0016] The washed filtrate was vacuum dried for 18 hours to form modified MXene powder.

[0017] As a further embodiment of the present invention: the antioxidant solution is a p-hydroxybenzoic acid solution, a cystine solution or a resveratrol solution.

[0018] As a further solution of the present invention: the electric field radiation elimination layer is a boron nitride film, an aluminum oxide film or a graphene film.

[0019] As a further solution of the present invention: the coating method of the electric field adsorption layer is:

[0020] The electric field radiation elimination layer is heated to 400 degrees Celsius to form a high-temperature electric field radiation elimination layer;

[0021] The high-temperature electric field radiation elimination layer is completely immersed in the MXene composite liquid for 2 seconds and then taken out;

[0022] The taken out high-temperature electric field radiation elimination layer is naturally dried, and the MXene composite liquid is dried on the surface of the electric field radiation elimination layer to form an electric field adsorption layer.

[0023] As a further solution of the present invention: a recovery conductive strip is arranged on the surface of the electric field radiation elimination layer, and the recovery conductive strip is connected to a ground wire.

[0024] A second aspect of the present invention provides a method for eliminating electric field radiation of an electric field radiation elimination structure, comprising the following steps:

[0025] S1: placing the electric field radiation elimination layer in the electric field;

[0026] S2: The electric field adsorption layer on the electric field radiation elimination layer converts the electric field into an induced current;

[0027] S3: The induced current is transmitted to the ground wire through the recovery conductive bar.

[0028] The third aspect of the present invention provides an electric heating film without electric field radiation, comprising an electric field radiation elimination structure and an electric heating layer, wherein the electric field radiation elimination structure is arranged on the top and bottom surfaces of the electric heating layer, and an insulating layer is arranged between the electric field radiation elimination structure and the electric heating layer, and the insulating layer is a polyimide film, polyethylene, polyvinyl chloride or polycarbonate, the electric heating film is connected to 220V alternating current through a wire, and an outer protective layer is arranged on the side of the electric field radiation elimination structure away from the insulating layer.

[0029] As a further solution of the present invention: the electric heating layer is a carbon fiber electric heating film, a metal electric heating film, a polyimide electric heating film or a graphene electric heating film, the insulating layer is a polyimide film, polyethylene, polyvinyl chloride or polycarbonate, and the outer protective layer is an extruded board or a white crystal board.

[0030] Beneficial effects of the present invention:

[0031] In the present invention, the nanofibers prepared by modified MXene powder and carbon nanotubes through polymer solution have high mechanical strength and oxidation resistance. At the same time, the nanofibers will be evenly attached to the surface of the electric field radiation elimination layer. Since the nanofibers prepared by modified MXene powder and carbon nanotubes have good conductivity, a good conductive film will be formed on the surface of the electric field radiation elimination layer. The conductive film will form a Faraday cage on the outside of the electric field radiation elimination layer. In this way, when the electric field radiation elimination layer 1 generates an induced current, the electric field adsorption layer will completely shield the induced electric field generated by the electric field radiation elimination layer, thereby greatly improving the electric field shielding energy efficiency of the electric field radiation elimination layer. The electric field adsorption layer prepared by modified MXene powder also improves the thermal stability of the electric field shielding energy efficiency of the electric field radiation elimination layer. The electric field adsorption layer also greatly increases the oxidation resistance of the electric field radiation elimination layer 1, thereby increasing the service life of the electric field radiation elimination layer 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] Figure 1 It is a schematic diagram of the structure of the electric heating film of the present invention;

[0034] Figure 2 It is a flowchart of the method for preparing the MXene composite liquid of the present invention;

[0035] Figure 3 It is a flowchart of the preparation method of the modified MXene powder of the present invention;

[0036] Figure 4 It is a flowchart of the electric field radiation elimination method of the present invention.

[0037] Figure numerals: 1. electric field radiation elimination layer; 2. grounding wire; 3. electric heating layer; 4. outer protective layer. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figure 1 - Figure 4 As shown, the present invention discloses an electric field radiation elimination structure, which includes an electric field radiation elimination layer 1, which is externally connected to a grounding wire 2, and an electric field adsorption layer is coated on the outer surface of the electric field radiation elimination layer 1, and the electric field adsorption layer is formed by drying a MXene composite liquid on the outer surface of the electric field radiation elimination layer 1.

[0041] The preparation method of the modified MXene powder is as follows:

[0042] Add MXene powder to the antioxidant solution and perform ultrasonic dispersion at 20 degrees Celsius for 10 minutes to form a mixed solution. It should be noted that the conductivity and layered structure of MXene powder give it excellent electromagnetic shielding capabilities. Electromagnetic shielding materials are usually used to block or weaken electromagnetic waves emitted by electronic equipment to avoid signal interference or protect sensitive equipment. MXene can be used as an excellent choice for electromagnetic shielding materials. Its light weight, flexibility and high-efficiency shielding performance are particularly in line with the requirements of modern electronic equipment. Compared with traditional shielding materials, MXene powder provides high shielding efficiency while also having better processability, suitable for a variety of structural designs and forming. For example, in the field of floor heating, MXene powder is arranged on the outside of the electric heating layer. On the one hand, it can absorb the electric field radiation generated by the electric heating layer when it is working. At the same time, MXene powder has good thermal conductivity, so that the heat generated by the electric heating layer can be quickly transferred to the room, ensuring the heating effect of the electric heating layer while absorbing the electric field radiation generated by the electric heating layer when it is working, making the use of floor heating safer and not causing hidden dangers to human health.

[0043] The particle diameter of MXene powder is between 5 nanometers and 10 nanometers. The specific surface area of ​​nanometer-diameter MXene powder is large. The specific surface area of ​​a single-layer or few-layer MXene can reach tens to hundreds of square meters per gram. The high specific surface area enables MXene to provide more active sites, thereby improving its application effects in energy storage, adsorption, catalysis, etc., and facilitating the modification of MXene powder.

[0044] The antioxidant solution is a p-hydroxybenzoic acid solution, a cystine solution or a resveratrol solution. It should be noted that the surface of the MXene powder carries -OH, -F and -O groups. These surface groups can react with the carboxyl or hydroxyl groups of p-hydroxybenzoic acid to form hydrogen bonds, electrostatic interactions or covalent bonds. Among them, the interaction between the carboxyl group and the surface group of MXene is relatively strong. The carboxyl group of p-hydroxybenzoic acid can combine with the metal group on the surface of MXene to form a covalent bond or a strong coordination bond, thereby stably adsorbing on the surface of MXene. The benzene ring structure of p-hydroxybenzoic acid is a hydrophobic structure, so when it combines with the surface of MXene, it can The hydrophilicity of MXene can be partially inhibited, and its dispersibility and stability in non-polar solvents can be improved. Para-hydroxybenzoic acid can protect MXene from oxidation. This is because the benzene ring and carboxyl group in the molecular structure of hydroxybenzoic acid can form a physical barrier, reduce the contact between the surface of MXene and oxygen or water, and effectively prolong the stability of MXene in the air. The effects of cystine solution and resveratrol solution are similar to those of para-hydroxybenzoic acid solution, both of which inhibit the hydrophilicity of MXene and improve the antioxidant properties of MXene. They will not be elaborated here. Those skilled in the art can appropriately select para-hydroxybenzoic acid solution, cystine solution or resveratrol solution as needed.

[0045] Heat the mixed solution to 40 degrees Celsius and let it stand for 3 hours to form a static mixed solution, so that the antioxidant functional groups in the antioxidant solution can be combined with MXene. It should be noted that during the static mixed solution, the pH value of the mixed solution needs to be adjusted and ultrasonic assisted. For parahydroxybenzoic acid, the pH value of the mixed solution needs to be adjusted within the range of 4-5. If the pH is less than 3, MXene will begin to dissolve. It is not recommended to choose a too strong acidic environment. When adjusting the pH value of the mixed solution, precise control is required to ensure the combination of the antioxidant functional groups with MXene.

[0046] The mixed solution is allowed to stand and filtered to obtain a filtrate, and the filtrate is washed with deionized water. It should be noted that when washing the filtrate, it can be washed with deionized water for multiple times to ensure that the p-hydroxybenzoic acid solution on the surface of the filtrate is cleaned and does not affect subsequent processing. The specific method is to detect the pH value of the deionized water after washing. When the pH value of the deionized water is 7, it means that the p-hydroxybenzoic acid solution on the surface of the filtrate is cleaned.

[0047] The washed filtrate was vacuum dried for 12 hours to form modified MXene powder.

[0048] The preparation method of MXene composite liquid is as follows:

[0049] Adding modified MXene powder and carbon nanotubes to a polymer solution, and performing ultrasonic dispersion at 40 degrees Celsius to form a first mixed solution. It should be noted that the polymer solution refers to a uniform liquid formed by dissolving a polymer in an appropriate solvent. The polymer in the polymer solution may be gelatin, silk fibroin, polylactic acid PLA, polyester PET or polyvinyl alcohol PVA, and the solvent in the polymer solution may be dichloromethane, ethyl acetate or acetone;

[0050] The viscosity data of the first mixed solution is adjusted by using a polymer solution while ultrasonic dispersion is performed, and a second mixed solution is formed after ultrasonic dispersion is completed. It should be noted that the viscosity data is related to the method used to make the nanofibers of the second mixed solution. When the second mixed solution adopts an electrostatic spinning process, the viscosity data of the first mixed solution is 500-1000 mPa·s, when the second mixed solution adopts a wet spinning process, the viscosity data of the first mixed solution is 1500-2000 mPa·s, and when the second mixed solution adopts a solution blow spinning process, the viscosity data of the first mixed solution is 2000-3000 mPa·s;

[0051] The second mixed solution is formed into nanofibers, wherein the diameter of the nanofibers is in a range of 100 nanometers to 500 nanometers;

[0052] The nanofibers were added into deionized water and ultrasonically dispersed at room temperature to obtain a MXene composite liquid.

[0053] The electric field radiation elimination layer 1 is a boron nitride film, an aluminum oxide film or a graphene film, wherein the boron nitride film has a high thermal conductivity and is suitable for thermal management and heat dissipation applications, has good chemical stability to acids, alkalis and high temperatures, and is suitable for use in harsh environments; the aluminum oxide film has excellent hardness and wear resistance and is suitable for protective materials, and the metal film has good thermal conductivity; the graphene film is one of the best known conductive materials, has extremely high electron mobility, has excellent mechanical properties, and has high thermal conductivity, and is suitable for thermal management and heat dissipation applications. For the field of floor heating, very high thermal conductivity is required, so the graphene film is the best choice of material for the electric field radiation elimination layer 1, and the specific applicability is selected by technical personnel in this field according to the usage scenario of the electric field radiation elimination layer 1.

[0054] The coating method of the electric field adsorption layer is:

[0055] The electric field radiation elimination layer 1 is heated to 300 degrees Celsius to form a high-temperature electric field radiation elimination layer 1. It should be noted that during the heating process of the electric field radiation elimination layer 1, the electric field radiation elimination layer 1 should be heated evenly as a whole and the temperature rises steadily. Therefore, the temperature rise rate of the electric field radiation elimination layer 1 needs to be controlled. The best solution is to adopt a segmented heating method, which can heat the electric field radiation elimination layer 1 to 100 degrees Celsius, 150 degrees Celsius, 200 degrees Celsius, 250 degrees Celsius and 300 degrees Celsius in sequence to ensure that the electric field radiation elimination layer 1 is heated evenly.

[0056] The high-temperature electric field radiation elimination layer 1 is completely immersed in the MXene composite liquid for 1 second and then taken out. To ensure the uniformity of the dispersion of the nanofibers in the MXene composite liquid, the MXene composite liquid can be in contact with the high-temperature electric field radiation elimination layer 1 with the assistance of ultrasound. After the high-temperature electric field radiation elimination layer 1 is completely immersed in the MXene composite liquid, the high-temperature electric field radiation elimination layer 1 will quickly react with the nanofibers in the MXene composite liquid, and the nanofibers will adhere to the surface of the electric field radiation elimination layer 1 at high temperature. This is because the nanofibers in contact with the high-temperature electric field radiation elimination layer 1 will melt, thereby ensuring that the nanofibers are evenly attached to the surface of the electric field radiation elimination layer 1.

[0057] The taken out high-temperature electric field radiation elimination layer 1 is naturally dried, and the MXene composite liquid is dried on the surface of the electric field radiation elimination layer 1 to form an electric field adsorption layer. When the high-temperature electric field radiation elimination layer 1 is taken out, the temperature of the electric field radiation elimination layer 1 will gradually decrease. In this process, the high-temperature electric field radiation elimination layer 1 can evaporate the deionized water in the MXene composite liquid on the one hand, and on the other hand, the nanofibers can be solidified on the surface of the electric field radiation elimination layer 1 to form a firm electric field adsorption layer.

[0058] The prepared electric field radiation elimination layer 1 was tested for its electric field shielding efficiency, surface strength and oxidation resistance.

[0059] Example 2

[0060] like Figure 1 - Figure 4 As shown, the present invention discloses an electric field radiation elimination structure, which includes an electric field radiation elimination layer 1, which is externally connected to a grounding wire 2, and an electric field adsorption layer is coated on the outer surface of the electric field radiation elimination layer 1, and the electric field adsorption layer is formed by drying a MXene composite liquid on the outer surface of the electric field radiation elimination layer 1.

[0061] The preparation method of the modified MXene powder is as follows:

[0062] The MXene powder was added to the antioxidant solution and ultrasonically dispersed at 30 degrees Celsius for 20 minutes to form a mixed solution;

[0063] The mixed solution was heated to 50 degrees Celsius and allowed to stand for 4.5 hours to form a stationary mixed solution;

[0064] The mixed solution was allowed to stand for filtration to obtain a filtrate, and the filtrate was washed with deionized water;

[0065] The washed filtrate was vacuum dried for 18 hours to form modified MXene powder.

[0066] The antioxidant solution is p-hydroxybenzoic acid solution, cystine solution or resveratrol solution.

[0067] The preparation method of MXene composite liquid is as follows:

[0068] Adding the modified MXene powder and the carbon nanotubes into the polymer solution and performing ultrasonic dispersion at 60 degrees Celsius to form a first mixed solution;

[0069] During ultrasonic dispersion, the polymer solution is used to adjust the viscosity of the first mixed solution, and a second mixed solution is formed after the ultrasonic dispersion is completed;

[0070] forming the second mixed solution into nanofibers;

[0071] The nanofibers were added into deionized water and ultrasonically dispersed at room temperature to obtain a MXene composite liquid.

[0072] The electric field radiation canceling layer 1 is a boron nitride film, an aluminum oxide film, or a graphene film.

[0073] The coating method of the electric field adsorption layer is:

[0074] The electric field radiation elimination layer 1 is heated to 400 degrees Celsius to form a high-temperature electric field radiation elimination layer 1. It should be noted that during the heating process of the electric field radiation elimination layer 1, the electric field radiation elimination layer 1 should be heated evenly as a whole and the temperature rises steadily. Therefore, the temperature rise rate of the electric field radiation elimination layer 1 needs to be controlled. The best solution is to use a segmented heating method, which can heat the electric field radiation elimination layer 1 to 100 degrees Celsius, 200 degrees Celsius, 300 degrees Celsius and 400 degrees Celsius in sequence to ensure that the electric field radiation elimination layer 1 is heated evenly;

[0075] The high-temperature electric field radiation elimination layer 1 is completely immersed in the MXene composite liquid for 2 seconds and then taken out;

[0076] The taken out high-temperature electric field radiation elimination layer 1 is naturally dried, and the MXene composite liquid is dried on the surface of the electric field radiation elimination layer 1 to form an electric field adsorption layer.

[0077] The prepared electric field radiation elimination layer 1 was tested for its electric field shielding efficiency, surface strength and oxidation resistance.

[0078] Example 3

[0079] like Figure 1 - Figure 4 As shown, the present invention discloses an electric field radiation elimination structure, which includes an electric field radiation elimination layer 1, which is externally connected to a grounding wire 2, and an electric field adsorption layer is coated on the outer surface of the electric field radiation elimination layer 1, and the electric field adsorption layer is formed by drying a MXene composite liquid on the outer surface of the electric field radiation elimination layer 1.

[0080] The preparation method of the modified MXene powder is as follows:

[0081] The MXene powder is added to an antioxidant solution and ultrasonically dispersed at 40 degrees Celsius for 30 minutes to form a mixed solution. It should be noted that the antioxidant solution is a p-hydroxybenzoic acid solution, a cystine solution or a resveratrol solution.

[0082] The mixed solution was heated to 60 degrees Celsius and allowed to stand for 6 hours to form a stationary mixed solution;

[0083] The mixed solution was allowed to stand for filtration to obtain a filtrate, and the filtrate was washed with deionized water;

[0084] The washed filtrate was vacuum dried for 24 hours to form modified MXene powder.

[0085] The preparation method of MXene composite liquid is as follows:

[0086] Adding the modified MXene powder and the carbon nanotubes into the polymer solution and performing ultrasonic dispersion at 80 degrees Celsius to form a first mixed solution;

[0087] During ultrasonic dispersion, the polymer solution is used to adjust the viscosity of the first mixed solution, and a second mixed solution is formed after the ultrasonic dispersion is completed;

[0088] forming the second mixed solution into nanofibers;

[0089] The nanofibers were added into deionized water and ultrasonically dispersed at room temperature to obtain a MXene composite liquid.

[0090] The electric field radiation canceling layer 1 is a boron nitride film, an aluminum oxide film, or a graphene film.

[0091] The coating method of the electric field adsorption layer is:

[0092] The electric field radiation elimination layer 1 is heated to 500 degrees Celsius to form a high-temperature electric field radiation elimination layer 1. It should be noted that during the heating process of the electric field radiation elimination layer 1, the electric field radiation elimination layer 1 should be heated evenly as a whole and the temperature rises steadily. Therefore, the temperature rise rate of the electric field radiation elimination layer 1 needs to be controlled. The best solution is to use a segmented heating method, which can heat the electric field radiation elimination layer 1 to 100 degrees Celsius, 200 degrees Celsius, 300 degrees Celsius, 400 degrees Celsius and 500 degrees Celsius in sequence to ensure that the electric field radiation elimination layer 1 is heated evenly;

[0093] The high-temperature electric field radiation elimination layer 1 is completely immersed in the MXene composite liquid for 3 seconds and then taken out;

[0094] The taken out high-temperature electric field radiation elimination layer 1 is naturally dried, and the MXene composite liquid is dried on the surface of the electric field radiation elimination layer 1 to form an electric field adsorption layer.

[0095] The prepared electric field radiation elimination layer 1 was tested for its electric field shielding efficiency, surface strength and oxidation resistance.

[0096] Comparative Example 1

[0097] Different from Example 1 and Example 2, this example uses common MXene powder, adds common MXene powder and carbon nanotubes into the polymer solution, and performs ultrasonic dispersion at 60 degrees Celsius to form a first mixed solution;

[0098] During ultrasonic dispersion, the polymer solution is used to adjust the viscosity of the first mixed solution, and a second mixed solution is formed after the ultrasonic dispersion is completed;

[0099] forming the second mixed solution into nanofibers;

[0100] The nanofibers were added into deionized water and ultrasonically dispersed at room temperature to obtain a MXene composite liquid.

[0101] The electric field radiation canceling layer 1 is a boron nitride film, an aluminum oxide film, or a graphene film.

[0102] The coating method of the electric field adsorption layer is:

[0103] The electric field radiation elimination layer 1 is heated to 400 degrees Celsius to form a high-temperature electric field radiation elimination layer 1;

[0104] The high-temperature electric field radiation elimination layer 1 is completely immersed in the MXene composite liquid for 2 seconds and then taken out;

[0105] The taken out high-temperature electric field radiation elimination layer 1 is naturally dried, and the MXene composite liquid is dried on the surface of the electric field radiation elimination layer 1 to form an electric field adsorption layer.

[0106] The prepared electric field radiation elimination layer 1 was tested for its electric field shielding efficiency, surface strength and oxidation resistance.

[0107] Comparative Example 2

[0108] Different from Example 1, Example 2 and Comparative Example 1, this example uses a common electric heating shielding layer, and the electric field radiation elimination layer performance, surface strength and oxidation resistance of the common electric heating shielding layer are tested.

[0109] According to Example 1, Example 2, Example 3, Comparative Example 1 and Comparative Example 2, the performance test table of the electric field radiation elimination layer 1 is as follows:

[0110] Table 1 Electric field radiation elimination layer performance test table

[0111]

[0112] The DPPH free radical scavenging method is used to test the oxidation resistance of the electric field radiation elimination layer 1. According to the performance test table of the electric field radiation elimination layer 1, the electric field adsorption layer added to the outer surface of the electric field radiation elimination layer 1 in Example 1, Example 2 and Example 3 improves the oxidation resistance of the electric field radiation elimination layer 1, which increases the service life of the electric field radiation elimination layer 1. The electric field radiation elimination layer 1 can completely shield the electric field and the magnetic field, and is harmless to the human body when used for a long time, and has a good effect.

[0113] At the same time, according to the electric field radiation elimination layer 1 prepared in Example 1, Example 2, Example 3, Comparative Example 1 and Comparative Example 2, the electric field shielding energy efficiency of the electric field radiation elimination layer 1 obtained by testing its electric field shielding energy efficiency at different temperatures is as follows:

[0114] Table 2 Electric field shielding efficiency of electric field radiation elimination layer at different temperatures (dB)

[0115]

[0116] According to the electric field shielding energy efficiency table of the electric field radiation elimination layer 1, it can be seen that the electric field shielding energy efficiency of the electric field radiation elimination layer 1 in Example 1, Example 2 and Example 3 remains stable with the increase of temperature, while the electric field shielding energy efficiency of the electric field radiation elimination layer 1 in Comparative Example 1 and Comparative Example 2 decreases with the increase of temperature, which reduces the electric field shielding energy efficiency of the electric field radiation elimination layer 1, that is, the thermal stability of the electric field shielding energy efficiency of the electric field radiation elimination layer 1 is not strong.

[0117] In summary, the electric field adsorption layer added to the surface of the electric field radiation elimination layer 1 in Example 1, Example 2 and Example 3 not only greatly improves the electric field shielding energy efficiency of the electric field radiation elimination layer 1, but also improves the thermal stability of the electric field shielding energy efficiency of the electric field radiation elimination layer 1. At the same time, the electric field adsorption layer also greatly increases the oxidation resistance of the electric field radiation elimination layer 1, thereby increasing the service life of the electric field radiation elimination layer 1.

[0118] Example 4

[0119] like Figure 1 - Figure 4 As shown, the present invention discloses a method for eliminating electric field radiation of an electric field radiation elimination structure, comprising the following steps:

[0120] First, the electric field radiation elimination layer 1 is placed in an electric field. It should be noted that a recovery conductive strip is provided on the electric field radiation elimination layer 1, and the recovery conductive strip is connected to a grounding wire 2. The outer surface of the electric field radiation elimination layer 1 is coated with an electric field adsorption layer, and the electric field adsorption layer is conductive.

[0121] Then the electric field adsorption layer on the electric field radiation elimination layer 1 converts the electric field into an induced current. Since the electric field adsorption layer is conductive and the outside of the electric field radiation elimination layer 1 is connected to the grounding wire 2 through a recovery conductive strip, the electric field adsorption layer converts the electric field radiation into an induced current and transmits the induced current to the ground through the grounding wire 2, thereby adsorbing the induced electric field and achieving the effect of electric field shielding.

[0122] Example 5

[0123] like Figure 1 - Figure 4As shown, the present invention discloses an electric heating film without electric field radiation, including an electric field radiation elimination structure and an electric heating layer 3, the electric field radiation elimination structure is arranged on the top surface and the bottom surface of the electric heating layer, an insulating layer is arranged between the electric field radiation elimination structure and the electric heating layer 3, the insulating layer is a polyimide film, polyethylene, polyvinyl chloride or polycarbonate, the electric heating film is connected to the 220V AC power through a wire, specifically, an N-line conduction bar and an L-line conduction bar are arranged on the electric heating layer 3, the N-line conduction bar is connected to the N pole of the 220V AC power supply, and the L-line conduction bar is connected to the L pole of the 220V AC power supply, and an outer protective layer 4 is arranged on the side of the electric field radiation elimination structure away from the insulating layer. It should be noted that when in use, the electric heating film is spread flat on the ground. For example, when floor heating is arranged indoors, the electric heating film is spread flat on the ground. Both the electric field radiation elimination structure and the electric heating layer have good flexibility, so the process of laying the electric heating film is simple. After the electric heating film is laid, floor laying equipment such as floors or tiles can be set on the electric heating film. When the electric heating film is needed, the 220V AC power supply connected to the electric heating film can be connected. The power supply transmits electrical energy to the electric heating film, and the electric heating film converts the electrical energy into thermal energy and generates a certain electric field at the same time. The electric field will form electromagnetic radiation. Since the electric field radiation elimination structure is arranged on the top and bottom surfaces of the electric heating layer 3, the electric field radiation elimination structure will absorb electromagnetic radiation and convert it into induced current. The electric field radiation elimination layer 1 in the electric field radiation elimination structure transmits the induced current to the bottom surface through the grounding wire 2, completely absorbs the induced electric field, and achieves the effect of electric field shielding.

[0124] The electric heating layer 3 is a carbon fiber electric heating film, a metal electric heating film, a polyimide electric heating film or a graphene electric heating film, the insulating layer is a polyimide film, polyethylene, polyvinyl chloride or polycarbonate, and the outer protective layer is an extruded board or a white crystal board. The specific type is adaptively selected by technical personnel in this field according to the actual application scenario of floor heating.

[0125] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An electric field radiation elimination structure, characterized in that: include: An electric field radiation elimination layer (1) having a grounding wire (2) externally connected thereto; An electric field adsorption layer, which is coated on the outer surface of the electric field radiation elimination layer (1), and the electric field adsorption layer is formed by drying a MXene composite liquid on the outer surface of the electric field radiation elimination layer (1); The preparation method of modified MXene powder is: Adding MXene powder to the antioxidant solution, and performing ultrasonic dispersion at 20 degrees Celsius to 40 degrees Celsius for 10 minutes to 30 minutes to form a mixed solution; The mixed solution is heated to 40 degrees Celsius to 60 degrees Celsius, and allowed to stand for 3 hours to 6 hours to form a static mixed solution; The mixed solution was allowed to stand for filtration to obtain a filtrate, and the filtrate was washed with deionized water; The cleaned filtrate is vacuum dried for 12 to 24 hours to form a modified MXene powder; The preparation method of the MXene composite liquid is: Adding the modified MXene powder and the carbon nanotubes into the polymer solution, and performing ultrasonic dispersion at 40 degrees Celsius to 80 degrees Celsius to form a first mixed solution; During ultrasonic dispersion, the polymer solution is used to adjust the viscosity of the first mixed solution, and a second mixed solution is formed after the ultrasonic dispersion is completed; forming the second mixed solution into nanofibers; The nanofibers were added into deionized water and ultrasonically dispersed at room temperature to obtain a MXene composite liquid; The electric field radiation elimination layer (1) is a boron nitride film, an aluminum oxide film or a graphene film.

2. The electric field radiation elimination structure according to claim 1, characterized in that: The antioxidant solution is a p-hydroxybenzoic acid solution, a cystine solution or a resveratrol solution.

3. The electric field radiation elimination structure according to claim 1, characterized in that: The coating method of the electric field adsorption layer is: Heating the electric field radiation elimination layer (1) to 300 degrees Celsius to 500 degrees Celsius to form a high-temperature electric field radiation elimination layer (1); The high-temperature electric field radiation elimination layer (1) is completely immersed in the MXene composite liquid for 1 to 3 seconds and then taken out; The taken-out high-temperature electric field radiation elimination layer (1) is naturally dried, and the MXene composite liquid is dried on the surface of the electric field radiation elimination layer (1) to form an electric field adsorption layer.

4. The electric field radiation elimination structure according to claim 1, characterized in that: A recovery conductive strip is provided on the surface of the electric field radiation elimination layer (1), and the recovery conductive strip is connected to a grounding wire (2).

5. A method for eliminating electric field radiation used in an electric field radiation elimination structure according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: placing the electric field radiation elimination layer (1) in an electric field; S2: The electric field adsorption layer on the electric field radiation elimination layer (1) converts the electric field into an induced current; S3: The induced current is transmitted to the ground wire (2) through the recovery conductive bar.

6. An electric heating film without electric field radiation, characterized in that: It comprises the electric field radiation elimination structure and the electric heating layer (3) as described in any one of claims 1 to 4, wherein the electric field radiation elimination structure is arranged on the top surface and the bottom surface of the electric heating layer (3), an insulating layer is arranged between the electric field radiation elimination structure and the electric heating layer (3), the electric heating film is connected to a 220V alternating current through a wire, and an outer protective layer (4) is arranged on the side of the electric field radiation elimination structure away from the insulating layer.

7. The electric heating film without electric field radiation according to claim 6, characterized in that: The electric heating layer (3) is a carbon fiber electric heating film, a metal electric heating film, a polyimide electric heating film or a graphene electric heating film, the insulating layer is a polyimide film, polyethylene, polyvinyl chloride or polycarbonate, and the outer protective layer (4) is an extruded board or a white crystal board.

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