Absorbing glass and its application in electronic devices

Abstract

The present invention relates to absorbing glass and its application in electronic devices. The absorbing glass comprises a glass body and a grid-like absorbing structure embedded in the glass body. The raw materials for preparing the grid-like absorbing structure include a composite magnetic material and a coagulant. The composite magnetic material includes a composite material composed of porous graphene ellipsoids and zinc sulfide nanomaterials, and an organic insulating material coated on the surface of the composite material. In the composite material, a plurality of the porous graphene ellipsoids are orderly arranged to form a graphene group, and the zinc sulfide nanomaterial is integrated into the graphene group. The absorbing glass of the present invention has both excellent optical and absorbing properties. When used in electronic devices, it can effectively improve the electromagnetic shielding performance of the electronic devices and enhance the electromagnetic interference immunity of the electronic devices.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic wave-absorbing materials, in particular to wave-absorbing glass and its application in electronic equipment. Background Art

[0002] As a special optical material, glass plays an extremely important role in the fields of aerospace, semiconductors, and precision devices. Its performance directly determines the resolution, accuracy, stability, and reliability of related equipment.

[0003] However, traditional glass has been studied mainly for its optical properties, and research on its wave-absorbing properties is relatively weak. Therefore, traditional glass does not have wave-absorbing properties, causing electromagnetic waves to pass through the glass and interfere with electronic equipment. Summary of the Invention

[0004] Based on this, it is necessary to provide an absorbing glass and its application in electronic devices to address the above technical problems. The absorbing glass has both excellent optical properties and absorbing properties. When applied to electronic devices, it can effectively improve the electromagnetic shielding performance of the electronic devices and enhance the electromagnetic immunity of the electronic devices.

[0005] The present invention provides a wave-absorbing glass, comprising a glass body and a grid-shaped wave-absorbing structure embedded in the glass body, wherein the raw materials for preparing the grid-shaped wave-absorbing structure include a composite magnetic material and a coagulant;

[0006] The composite magnetic material includes a composite material composed of porous graphene ellipsoids and zinc sulfide nanomaterials and an organic insulating material coated on the surface of the composite material. In the composite material, a plurality of the porous graphene ellipsoids are arranged in an orderly manner to form a graphene group, and the zinc sulfide nanomaterial is integrated into the graphene group.

[0007] In one embodiment, the width of the grid lines in the grid-like absorbing structure is 0.095 mm to 0.105 mm.

[0008] In one embodiment, the area of ​​a single grid in the grid-like absorbing structure is 3.9 mm 2 -4.1mm 2 .

[0009] In one embodiment, a single grid of the grid-shaped wave absorbing structure is a square.

[0010] In one embodiment, the mass fraction of the composite magnetic material in the grid-shaped wave absorbing structure is 5%-15%.

[0011] In one embodiment, in the graphene group, the porous graphene ellipsoids are arranged in a three-dimensional array.

[0012] In one embodiment, the equatorial radius of the porous graphene ellipsoid is 100 nm-120 nm, and the polar radius is 200 nm-250 nm.

[0013] In one embodiment, the pore size of the porous graphene ellipsoid is 14 nm-25 nm, and the ratio of the particle size of the zinc sulfide nanomaterial to the pore size of the porous graphene ellipsoid is 1:8-1:12.

[0014] In one embodiment, in the composite magnetic material, the mass ratio of the zinc sulfide nanomaterial to the graphene group is 1:3-1:5.

[0015] The present invention also provides an application of the wave-absorbing glass in electronic equipment.

[0016] By carefully selecting the materials and regulating their structure, the present invention achieves an absorption bandwidth covering 20 MHz to 1.2 GHz and an insertion loss of approximately 25 dB. This composite magnetic material offers the advantages of adjustable absorption bandwidth and strong absorption performance. Consequently, when fabricated into a grid-like absorbing structure and embedded within the glass body, the resulting absorbing glass exhibits excellent electromagnetic shielding properties.

[0017] Furthermore, the grid-like structure embedded in the glass ensures the glass's optical properties, such as light transmittance. Consequently, the absorbing glass provided by the present invention combines excellent optical and absorbing properties. When used in electronic devices, it can effectively improve their electromagnetic shielding and immunity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the wave-absorbing glass according to one embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the grid-shaped absorbing structure;

[0020] Figure 3 This is a high-magnification scanning electron microscope image of the graphene group prepared in Example 1;

[0021] Figure 4 This is a high-magnification scanning electron microscope image of the composite magnetic material prepared in Example 1;

[0022] Figure 5 The electromagnetic compatibility radiation disturbance diagram of an electronic device using the absorbing glass of Example 1;

[0023] Figure 6The electromagnetic compatibility radiation disturbance diagram of the electronic device using the glass of Comparative Example 1.

[0024] In the figure: 10, glass body; 20, grid-shaped absorbing structure. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the present invention will be described in more detail below. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments or examples described herein. On the contrary, the purpose of providing these embodiments or examples is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments or embodiments and are not intended to limit the present invention. The optional scope of the term "and / or" used herein includes any one of two or more related listed items, and also includes any and all combinations of related listed items, including any two related listed items, any more related listed items, or the combination of all related listed items.

[0027] like Figure 1 As shown, an absorbing glass according to an embodiment of the present invention includes a glass body 10 and a grid-like absorbing structure 20 embedded in the glass body 10. The raw materials for preparing the grid-like absorbing structure 20 include a composite magnetic material and a solidifying agent.

[0028] The composite magnetic material includes a composite material composed of porous graphene ellipsoids and zinc sulfide nanomaterials and an organic insulating material coated on the surface of the composite material. Optionally, the organic insulating material can be partially coated on the surface of the composite material, or the composite material can be completely coated. Preferably, the organic insulating material completely coats the composite material. The organic insulating material is preferably a block polymer, such as ethylene oxide and propylene oxide block copolyether. The use of organic insulating material for coating can not only make the composite magnetic material have electrical insulation properties, but also make the bonding of the composite material more stable.

[0029] In the composite material, a plurality of porous graphene ellipsoids are orderly arranged to form a graphene cluster, and the zinc sulfide nanomaterial is integrated into the graphene cluster. Specifically, the zinc sulfide nanomaterial is integrated into the graphene cluster in such a manner that: the zinc sulfide nanomaterial is attached to the surface of at least a portion of the porous graphene ellipsoids, and at least a portion of the gaps within the graphene cluster are filled with the zinc sulfide nanomaterial. Furthermore, when the particle size of the zinc sulfide nanomaterial is smaller than the pore size of the porous graphene ellipsoids, the zinc sulfide nanomaterial is integrated into the graphene cluster in such a manner that the zinc sulfide nanomaterial is contained within the pores of at least a portion of the porous graphene ellipsoids. Of course, the specific integration method does not substantially affect the microwave absorption performance.

[0030] Different structural types and different materials have different electromagnetic wave conversion capabilities. In the present invention, in terms of materials, graphene and zinc sulfide are used for combination. In terms of structure, graphene particles are bonded by a binder such as phenolic resin to form porous graphene ellipsoids, and the porous graphene ellipsoids are arranged in an orderly manner to form a graphene group, and zinc sulfide nanomaterials are integrated into the graphene group in various ways, thereby enabling electromagnetic waves to be converted into heat energy faster and more efficiently. Graphene has excellent thermal conductivity and can achieve rapid transfer of heat energy, thereby making the composite magnetic material have excellent wave absorption performance in a wider frequency band. Specifically, the wave absorption bandwidth of the composite magnetic material covers 20MHz-1.2GHz, and the insertion loss reaches about 25dB.

[0031] Therefore, when the composite magnetic material is made into a grid-shaped wave-absorbing structure 20 and embedded in the glass body 10, the obtained wave-absorbing glass has excellent electromagnetic shielding performance.

[0032] Furthermore, the grid-like structure embedded in the glass body 10 maintains the optical properties of the absorbing glass, such as light transmittance. Therefore, the absorbing glass provided by the present invention exhibits both excellent optical and absorbing properties. When used in electronic devices, it can effectively improve the electromagnetic shielding performance and enhance the electromagnetic immunity of electronic devices.

[0033] It should be noted that the present invention does not impose any restrictions on the raw materials for preparing the glass body, and any existing glass can be used as the glass body.

[0034] In order to further optimize the wave-absorbing performance and optical performance of the wave-absorbing glass, the composite magnetic material and the grid-shaped wave-absorbing structure 20 may be further optimized.

[0035] For example, in the composite magnetic material, when a plurality of the porous graphene ellipsoids are arranged in order to form a graphene group, the porous graphene ellipsoids are arranged in a three-dimensional array; and / or the equatorial radius of the porous graphene ellipsoid is 100nm-120nm, and the polar radius is 200nm-250nm; and / or the pore size of the porous graphene ellipsoid is 14nm-25nm, and the ratio of the particle size of the zinc sulfide nanomaterial to the pore size of the porous graphene ellipsoid is 1:8-1:12.

[0036] For example, the width of the grid lines in the grid-like absorbing structure 20 is 0.095 mm to 0.105 mm, and / or the area of ​​a single grid in the grid-like absorbing structure 20 is 3.9 mm. 2 -4.1mm 2 .

[0037] It should be noted that the grid of the grid-like absorbing structure can be regular or irregular, as long as the area of ​​a single grid is within 3.9mm 2 -4.1mm 2 That is, preferably, a single grid can be a square, a rhombus, an equilateral hexagon, etc., and more preferably, Figure 2 The square shown.

[0038] In order to further optimize the absorbing performance of the absorbing glass, the mass ratio of the porous graphene ellipsoids and the zinc sulfide nanomaterial in the composite magnetic material can be further optimized. In one embodiment, the mass ratio of the zinc sulfide nanomaterial to the graphene group in the composite magnetic material is 1:3-1:5; and / or, the mass fraction of the composite magnetic material in the grid-like absorbing structure can be optimized. In one embodiment, the mass fraction of the composite magnetic material in the absorbing structure is 5%-15%.

[0039] In the grid-like absorbing structure 20, the material selection of the coagulant will not affect its absorbing effect. The present invention does not limit the selection of the coagulant. Preferably, the coagulant is selected from propylene glycol, disodium ethylenediaminetetraacetic acid, disodium stannous citrate, glucono-δ-lactone and insoluble polyvinyl pyrrolidone.

[0040] The preparation method of the absorbing glass of the present invention is not limited; any method can be used, as long as the structure and materials meet the aforementioned requirements of the present invention, to achieve the desired effect. For example, the glass body 10 and the grid-like absorbing structure 20 can be prepared separately, and then the grid-like absorbing structure 20 can be sandwiched between two glass bodies 10, so that the grid-like absorbing structure 20 is embedded in the glass body 10. Alternatively, a glass body 10 having a reticular hollow structure can be prepared first, and then the grid-like absorbing structure 20 can be fabricated in situ within the reticular hollow structure of the glass body 10.

[0041] In one embodiment, a method for preparing the wave-absorbing glass includes the following steps:

[0042] S10, providing glass liquid;

[0043] S20, pouring the glass liquid into a mold with a detachable mesh metal wire, removing the mesh metal wire after annealing, and obtaining a glass body 10 with a mesh hollow structure;

[0044] S30, mixing the composite magnetic material with a coagulant to obtain a slurry, placing the slurry in the mesh-shaped hollow structure of the glass body 10, and obtaining the absorbing glass after solidification.

[0045] In step S10, the present invention does not limit the glass liquid, and glass liquid with any proportion can be used.

[0046] In step S20, the mesh wires in the mold can be disassembled to form a mesh hollow structure. The mesh hollow structure is used to accommodate the slurry, thereby forming the mesh absorbing structure 20. It is understood that after annealing, the mesh wires can be directly removed by extraction or other means to obtain a glass body 10 with a mesh hollow structure. The line width of the mesh wires is equal to the line width of the mesh hollow structure and also equal to the line width of the mesh absorbing structure 20.

[0047] In step S30 , in order to better mix the composite magnetic material with the coagulant, the composite magnetic material may be mixed with water first and then with the coagulant.

[0048] The present invention does not limit the method of placing the slurry in the mesh hollow structure of the glass body 10. The slurry can be injected into the mesh hollow structure of the glass body 10 using equipment, or the glass body 10 can be immersed in the slurry to fill the mesh hollow structure with the slurry.

[0049] It should be noted that when immersing the glass body 10 in the slurry, protective films can be first formed on both sides of the glass body 10. The glass body 10 is then immersed in the slurry. After the slurry fills the mesh-like hollow structure, the glass body 10 is removed from the slurry, the slurry is allowed to solidify, and finally the protective films are removed to obtain the absorbing glass. This is because forming protective films on both sides of the glass body 10 can prevent the slurry from forming on both sides of the glass body 10, thereby preventing the cured product from affecting the surface smoothness and light transmittance of the absorbing glass. It is understood that the protective films can be arbitrarily selected and are not limited in the present invention.

[0050] Furthermore, in order to make the edge of the prepared absorbing glass smoother, the absorbing structure extending beyond the edge of the absorbing glass is removed simultaneously with the removal of the protective film.

[0051] Furthermore, the present invention does not limit the preparation method of the composite magnetic material, and any preparation method can be used to obtain it. As long as the structure and materials meet the above conditions of the present invention, the desired effect can be achieved.

[0052] In one embodiment, the preparation method of the composite magnetic material includes the following steps: preparing a graphene group using a colloidal crystal template method, then mixing the graphene group with a zinc sulfide nanomaterial, adding an organic insulating material, heating to a viscous state, and then cooling to obtain a composite magnetic material.

[0053] Among them, the specific steps of preparing the graphene group using the colloidal crystal template method include: preparing graphene and water into a first preparation, then mixing the first preparation with a binder into a second preparation, then adding the second preparation to the colloidal crystal template and heating it under an inert atmosphere, and then cooling it under a reducing atmosphere to obtain the graphene group.

[0054] Among them, the mass ratio of graphene to water is 1:2-1:4, the mass ratio of graphene to binder is 10:1-10:3, the binder is preferably selected from resin binders, such as phenolic resin, etc., the mass ratio of graphene to colloidal crystal is 6:1-12:1, the colloidal crystal template is selected from polyvinyl methyl acrylate colloidal crystal template, the heating temperature is preferably 180°C-220°C, the time is preferably 20h-28h, the inert atmosphere is selected from nitrogen, argon, etc., and the reducing atmosphere is selected from carbon monoxide, hydrogen, etc.

[0055] In order to further improve the stability of graphene, a catalyst with reducing properties, such as SnCl2, FeCl2, etc., can be added to the first formulation, and the mass ratio of graphene to the reducing catalyst is 1:1-2:1. Then, it is heated in an inert gas and cooled in a reducing atmosphere to obtain a more stable first formulation, wherein the heating temperature is preferably 220°C-280°C, and the time is preferably 4h-8h.

[0056] The present invention also provides an application of the aforementioned absorbing glass in electronic equipment. Since the absorbing glass provided by the present invention has both excellent optical properties and absorbing properties, when the absorbing glass is applied to electronic equipment, it can effectively improve the electromagnetic shielding performance of the electronic equipment and enhance the electromagnetic immunity of the electronic equipment.

[0057] Hereinafter, the wave-absorbing glass and its application in electronic devices will be further described through the following specific embodiments.

[0058] Example 1

[0059] Graphene powder was added to water at a mass ratio of 1:3 and mixed. SnCl2 was then added at a mass ratio of SnCl2 to graphene powder of 1:1. The mixture was heated at 250°C for 6 hours in an argon atmosphere and then cooled in a CO environment to obtain a first formulation. The first formulation was mixed with phenolic resin to obtain a second formulation, wherein the mass ratio of graphene powder to phenolic resin was 10:2.

[0060] The second formulation was added to polyvinyl methacrylate colloidal crystals, with a mass ratio of graphene to polyvinyl methacrylate colloidal crystals of 8:1, and then placed in an argon atmosphere, heated at 200°C for 24 hours, and then cooled in a carbon monoxide environment to obtain the following Figure 3 The graphene group shown is composed of porous graphene ellipsoids arranged in a three-dimensional array, wherein the equatorial radius of the porous graphene ellipsoid is 100 nm, the polar radius is 210 nm, and the pore diameter is 18 nm.

[0061] Graphene groups and zinc sulfide nanomaterials with a particle size of 1.8 nm were added to water in a mass ratio of 4:1, stirred and mixed, and then ethylene oxide and propylene oxide block copolyether were added. The mixture was placed in an argon atmosphere and heated at 150°C until it became viscous, and then cooled to obtain the following: Figure 4 The composite magnetic material shown.

[0062] The composite magnetic material is dispersed in water, and then disodium stannous citrate is added to obtain a slurry, wherein the mass ratio of the composite magnetic material to the disodium stannous citrate is 1:9.

[0063] In terms of mass fraction, 45% quartz sand, 9% borax, 12% boric acid, 5% barite, 8% barium carbonate, 2% limestone, 7% feldspar and 12% soda ash are ground and mixed evenly, stirred into a batch material, and then the batch material is sent to a glass melting furnace and melted into glass liquid at 1000°C.

[0064] A mold is provided, with a detachable mesh copper wire in the middle. The diameter of the copper wire is 0.1 mm, and a single grid of the mesh copper wire is a square with a side length of 2 mm. The above-mentioned glass liquid is poured into the mold, and the mesh copper wire is removed after annealing to obtain a glass body with a mesh hollow structure.

[0065] A protective film is formed on the front and back sides of the glass body, and then the glass body is immersed in the slurry. After the slurry fills the mesh hollow structure, the glass body is taken out from the slurry, and the slurry is solidified at room temperature. Finally, the absorbing structure where the protective film extends beyond the edge of the absorbing glass is removed to obtain the absorbing glass.

[0066] Example 2

[0067] Example 2 was carried out with reference to Example 1, except that the mass ratio of the graphene group to the zinc sulfide nanomaterial was 5:1.

[0068] Example 3

[0069] Example 3 was carried out with reference to Example 1, except that the mass ratio of the graphene group to the zinc sulfide nanomaterial was 3:1.

[0070] Example 4

[0071] Example 4 was carried out with reference to Example 1, except that the second formulation was added to the polyvinyl methyl acrylate colloidal crystals and heated at 180°C for 24 hours, the equatorial radius of the porous carbon rods was 100 nm, the polar radius was 200 nm, and the pore diameter was 14 nm; in addition, the particle size of the zinc sulfide nanomaterial was 1.7 nm.

[0072] Example 5

[0073] Example 5 was carried out with reference to Example 1, except that the second formulation was added to the polyvinyl methyl acrylate colloidal crystals and heated at 220°C for 22 hours, the equatorial radius of the porous carbon rods was 110 nm, the polar radius was 210 nm, and the pore diameter was 17 nm; in addition, the particle size of the zinc sulfide nanomaterial was 1.7 nm.

[0074] Example 6

[0075] Example 6 was carried out with reference to Example 1, except that the second formulation was added to the polyvinyl methyl acrylate colloidal crystals and heated at 220°C for 24 hours, the equatorial radius of the porous carbon rods was 120 nm, the polar radius was 220 nm, and the pore diameter was 22 nm; in addition, the particle size of the zinc sulfide nanomaterial was 2 nm.

[0076] Example 7

[0077] Example 7 was carried out with reference to Example 1, except that the mass ratio of the composite magnetic material to disodium stannous citrate was 1:19.

[0078] Example 8

[0079] Example 8 was carried out with reference to Example 1, except that the mass ratio of the composite magnetic material to disodium stannous citrate was 3:17.

[0080] Example 9

[0081] Example 9 is carried out with reference to Example 1, except that a single grid of the detachable mesh copper wire is rectangular with a width of 1 mm and a length of 4 mm.

[0082] Comparative Example 1

[0083] Comparative Example 1 is ordinary glass made from the glass melt of Example 1.

[0084] Comparative Example 2

[0085] Comparative Example 2 was carried out with reference to Example 1, except that the second formulation was added to the poly(ethyl methyl vinyl) ether colloidal crystals and heated at 150° C. for 24 h to obtain a graphene group of three-dimensionally arranged spherical graphene.

[0086] Comparative Example 3

[0087] Comparative Example 3 was carried out with reference to Example 1, except that the second formulation was added to the poly(ethyl methyl vinyl) ester colloidal crystals and heated at 190° C. for 18 h to obtain a graphene group of three-dimensionally arranged rod-shaped graphene.

[0088] Comparative Example 4

[0089] Comparative Example 4 was carried out with reference to Example 1, except that carbon nanotubes were used instead of graphene to obtain a carbon nanotube group composed of three-dimensionally arranged porous carbon nanotube ellipsoids.

[0090] The optical properties and wave absorbing properties of the wave absorbing glasses obtained in Examples 1-9 and Comparative Examples 1-4 were tested. The testing methods are shown below, and the test results are shown in Table 1.

[0091] Optical performance: Refer to GB / T5433 to test the light transmittance of absorbing glass;

[0092] Absorption performance: Refer to GB / T32596 to test absorption bandwidth and insertion loss.

[0093] Table 1

[0094]

[0095]

[0096] Application Experiment

[0097] The absorbing glass of Example 1 and the ordinary glass of Comparative Example 1 were applied to the security camera lens, and the electromagnetic compatibility radiation interference test was carried out. The results are as follows: Figure 5 He Ru Figure 6 As shown, from Figure 5 and Figure 6 It can be seen that the ordinary glass used in Comparative Example 1 still has a small amount of electromagnetic wave leakage, which will cause external electromagnetic wave interference, while the absorbing glass used in Example 1 can better prevent electromagnetic waves from radiating outward, especially has a more efficient shielding effect for electromagnetic radiation interference below 200 MHz.

[0098] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A wave-absorbing glass, characterized in that: It comprises a glass body and a grid-shaped wave-absorbing structure embedded in the glass body, wherein the raw materials for preparing the grid-shaped wave-absorbing structure include a composite magnetic material and a coagulant; The composite magnetic material includes a composite material composed of porous graphene ellipsoids and zinc sulfide nanomaterials and an organic insulating material coated on the surface of the composite material. In the composite material, a plurality of the porous graphene ellipsoids are arranged in an orderly manner to form a graphene group, the zinc sulfide nanomaterial is integrated into the graphene group, and the mass ratio of the zinc sulfide nanomaterial to the graphene group is 1:3-1:

5.

2. The wave-absorbing glass according to claim 1, characterized in that: The width of the grid lines in the grid-like wave absorbing structure is 0.095 mm to 0.105 mm.

3. The wave-absorbing glass according to claim 1, wherein: The area of ​​a single grid in the grid-like absorbing structure is 3.9 mm 2 -4.1mm 2 .

4. The wave-absorbing glass according to claim 3, characterized in that: A single grid of the grid-shaped wave-absorbing structure is a square.

5. The wave-absorbing glass according to claim 1, wherein: The mass fraction of the composite magnetic material in the grid-shaped wave-absorbing structure is 5%-15%.

6. The wave-absorbing glass according to any one of claims 1 to 5, characterized in that: In the graphene group, the porous graphene ellipsoids are arranged in a three-dimensional array.

7. The wave-absorbing glass according to any one of claims 1 to 5, characterized in that: The equatorial radius of the porous graphene ellipsoid is 100nm-120nm, and the polar radius is 200nm-250nm.

8. The wave-absorbing glass according to any one of claims 1 to 5, characterized in that: The pore size of the porous graphene ellipsoid is 14 nm-25 nm, and the ratio of the particle size of the zinc sulfide nanomaterial to the pore size of the porous graphene ellipsoid is 1:8-1:

12.

9. A method for preparing the wave-absorbing glass according to any one of claims 1 to 8, characterized in that: The following steps are involved: Provide glass liquid; pouring the glass liquid into a mold with a detachable mesh wire, and removing the mesh wire after annealing to obtain a glass body with a mesh hollow structure; The composite magnetic material is mixed with a coagulant to obtain a slurry, the slurry is placed in the mesh hollow structure of the glass body, and the absorbing glass is obtained after solidification.

10. Use of the wave-absorbing glass according to any one of claims 1 to 8 in electronic equipment.

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