A high-barrier film for 5G technology and its manufacturing method

Abstract

This invention belongs to the field of diaphragm preparation technology, and particularly relates to a membrane comprising a surface layer and a substrate layer bonded together by an adhesive; the substrate layer has uniformly formed grooves on the side facing the surface layer, and the openings of these grooves are sealed by the surface layer; the grooves are filled with an isolation medium composed of several isolation particles; these isolation particles can disperse outwards when the substrate layer is damaged and form an isolation layer at the point of damage; compared with the prior art, when the surface layer of the membrane of this invention is damaged, the isolation particles will escape from the grooves to repair the damaged area and form a new isolation layer at the damaged area, enabling the diaphragm to continue to be used even with minor damage, thus improving its service life.

Description

Technical Field

[0001] This invention relates to the field of membrane preparation technology, and in particular to a high-barrier membrane for 5G technology and its production method. Background Technology

[0002] With the widespread use of 5G technology in the electronics field, higher requirements have been placed on the components used in electronic products. High-barrier films are packaging films that protect the contents of packages from the infiltration of pollutants, oxygen, water vapor, liquids, odors, and other small molecules, while also preventing the contents from leaking out. They are widely used in solar backpacks, solar tents, solar flashlights, solar cars, and even solar sailboats and airplanes. The development of high-barrier films and the demand for new technologies are mutually reinforcing. In existing technologies, although high-barrier films have good anti-permeability properties, their anti-permeability performance is greatly weakened when the membrane surface is damaged. Even slight surface damage can affect the overall quality of the coating. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a high-barrier film for 5G technology and its manufacturing method, thereby solving the problems mentioned in the background section.

[0004] In view of this, the present invention provides a high-barrier film for 5G technology, comprising a surface layer and a substrate layer, which are bonded together by an adhesive; the substrate layer has uniformly formed grooves on the side facing the surface layer, and the opening of the grooves is sealed by the surface layer; the grooves are filled with an isolation medium, which is composed of a plurality of isolation particles; the isolation particles can disperse outward when the substrate layer is broken and form an isolation layer at the break point of the substrate layer.

[0005] In the above technical solution, the surface layer is further configured as an aluminum layer with a thickness of 0.01 to 0.03 mm.

[0006] In the above technical solution, the substrate layer is further configured as a thermoplastic polyamide elastomer film substrate, and the thickness of the substrate layer is 0.1-1mm.

[0007] In the above technical solution, furthermore, the separating particles are also provided with some adhesive particles, which are made of adhesive.

[0008] In the above technical solution, the separating particles further include, by weight: 10-20 parts epoxy resin, 3-8 parts modified anti-settling agent, 3-6 parts dispersant, 2-6 parts stabilizer and 10-25 parts nano silica powder.

[0009] A method for producing a diaphragm, applicable to the high-barrier membrane for 5G technology of the present invention, includes the following steps:

[0010] S1 Substrate Layer Preparation: Thermoplastic polyamide elastomer is prepared as the substrate, the substrate layer is formed by stretching, both sides of the substrate layer are corona treated, and a groove is formed on one side of the substrate layer by extrusion.

[0011] Preparation of S2 isolation particles: 20 parts by weight of nano silica powder, 15 parts of epoxy resin, 3 parts of modified anti-settling agent and 3 parts of dispersant are added to a mixer and stirred thoroughly. Then, 2 parts of stabilizer are added and stirred again. After stirring evenly, the mixture is dried to form particles to obtain isolation particles.

[0012] S3 Filling: Place the isolation particles obtained in S2 into the groove of the substrate layer, and then add some adhesive particles made by adhesive on top of the isolation particles.

[0013] S4 composite: The filled substrate layer and the aluminum layer are bonded together with an adhesive to form a diaphragm.

[0014] The modified anti-settling agent is prepared as follows: 0.1-0.2 parts by weight of graphene oxide, 60-75 parts by weight of anhydrous ethanol, and 20-25 parts by weight of water are ultrasonically dispersed to obtain a graphene oxide suspension; 0.75-1 parts by weight of aminopropyltriethoxysilane are added to the graphene oxide suspension, and the mixture is heated and subjected to a hydrolysis reaction; after the hydrolysis reaction is completed, the suspension is centrifuged to obtain a solid crude product, which is then washed with water, washed with alcohol, and dried to obtain a black solid product for later use.

[0015] Take 0.1-0.2 parts of the black solid product and disperse it in 2-5 parts of N,N-dimethylformamide to obtain a reaction suspension; add 0.1-0.15 parts of 4-dimethylaminopyridine, 0.05-0.1 parts of triethylamine, and 1.5-3 parts of 2-bromo-2-methylpropionyl bromide to the reaction suspension, and carry out an esterification reaction under anaerobic conditions; after the esterification reaction is completed, the suspension is centrifuged to obtain a solid crude product, which is washed with water, washed with alcohol, and dried to obtain modified graphene oxide for later use;

[0016] 2-3 parts of sodium perfluorovalerate, 1-1.5 parts of aminocaproic acid, and 10-15 parts of tetrahydrofuran are mixed to obtain a reaction mixture. 0.05-0.2 parts of condensing agent are added to the reaction mixture and a condensation reaction is carried out under anaerobic conditions. After the condensation reaction is completed, the solvent tetrahydrofuran is removed to obtain a crude product. The crude product is reconstituted, recrystallized, and dried to obtain the condensation product for later use.

[0017] Under anaerobic conditions, 0.5–1 parts of the modified graphene oxide, 3.5–8 parts of the condensation product, and 75–100 parts of N,N-dimethylformamide were mixed, followed by the addition of 0.0001–0.0002 parts of pentamethyldiethylenetriamine and 0.1–0.225 parts of copper bromide, and the reaction was carried out. After the reaction was completed, the solid product was collected by centrifugation, washed with alcohol, and dried to obtain the modified anti-settling agent.

[0018] Among them, the adhesive particles are a coating layer with an inner adhesive and an outer polymer layer;

[0019] The polymer is a copolymer formed by copolymerizing a first monomer and a second monomer; the first monomer is selected from at least one of acrylate, methacrylic acid, methacrylate, vinylidene fluoride, and acrylonitrile; the second monomer is selected from at least one of styrene, vinyl chloride, perfluoropropylene, trifluorochloroethylene, tetrafluoroethylene, vinylidene chloride, and tetrachloroethylene.

[0020] The polymer has a softening point of 30°C to 80°C.

[0021] In the above technical solution, further, the mixer in step S2 includes a movable frame with rollers at the bottom for easy movement. A mixing tank is fixed on the movable frame, and a liquid feed pipe is installed on the upper cover of the mixing tank. A stirring mechanism is located inside the mixing tank and includes a rotating shaft, multiple dispersing discs mounted on the rotating shaft, and a drive unit for driving the rotating shaft to rotate. A powder feeding mechanism is used for feeding nano-silica powder. The powder feeding mechanism includes two feed boxes fixed on the side wall of the mixing tank and a powder feed pipe that is inclinedly installed on the feed boxes and inserted into the inside of the mixing tank at one end. A powder nozzle is installed on the powder feed pipe. The feed boxes are fixed on the movable frame by a support arm, and the two feed boxes cooperate with the support arm to clamp and fix the side wall of the mixing tank.

[0022] The drive unit includes a motor, a gearbox connected to it, a drive gear that is driven to rotate, and a driven gear fixed on the rotating shaft;

[0023] In the above technical solution, the stirring mechanism further includes a turbulence unit, which includes a first telescopic airbag installed on the side of the rotating shaft; an air supply channel opened inside the rotating shaft, one end of which is connected to the first telescopic airbag, and the other end is connected to an external air pump through an air supply pipe; a spiral cylinder fixed at the end of the first telescopic airbag away from the rotating shaft, and a spiral blade is provided thereon; and a turbulence cylinder fixed at the end of the spiral cylinder away from the first telescopic airbag, and a turbulence blade is provided thereon.

[0024] In the above technical solution, further, a cleaning cotton is provided on the baffle cylinder, and the first telescopic airbag can drive the cleaning cotton on the baffle cylinder to contact the powder nozzle when it is extended; a vent is opened on the side of the baffle cylinder facing the powder nozzle, and an air valve is provided inside the baffle cylinder; the spiral cylinder connects the first telescopic airbag and the baffle cylinder.

[0025] Furthermore, the above technical solution also includes a dredging mechanism, which includes a second telescopic airbag located inside the side wall of the mixing tank at the bottom of the powder feed pipe and connected to an external air pump; a lifting rod fixed to the upper end of the second telescopic airbag and controlled by the second telescopic airbag to move up and down, with a sliding groove on the side wall of the mixing tank for the lifting rod to slide; a sealing frame fixed to the powder feed pipe and sealing the notch, with an elastic membrane located at the notch of the powder feed pipe and forming an air cavity with the sealing frame; a piston located inside the air cavity and sealed to the sealing frame; and a lifting block fixed to the lifting rod and located at the bottom of the sealing frame, with the piston connected to the lifting block via a connecting rod.

[0026] The beneficial effects of this invention are as follows: By setting grooves and isolation particles in the substrate layer, when the surface layer is damaged, the isolation particles in the grooves will escape to the damaged area and form an isolation layer at the damaged area. Furthermore, the damage will compress the adhesive particles, causing the adhesive inside the adhesive particles to escape and combine with the isolation particles at the damaged area, thus repairing the damage to some extent. The isolation layer formed when the surface layer is damaged can repair the diaphragm to a certain extent, improving its service life. Moreover, the formed isolation layer can effectively separate the inside and outside of the diaphragm, maintaining its isolation and anti-permeability functions even when damaged, allowing it to continue to be used even with minor damage, thus extending its service life. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the diaphragm structure in a specific embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure when the diaphragm surface is damaged in a specific embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the mixer in a specific embodiment of the present invention;

[0031] Figure 4This is a side view of the mixer in a specific embodiment of the present invention;

[0032] Figure 5 This is a top view of the mixer in a specific embodiment of the present invention;

[0033] Figure 6 This is a perspective view of the mixing tank in a specific embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the turbulence unit in a specific embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the baffle tube in a specific embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the unblocking mechanism in a specific embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the air cavity structure in a specific embodiment of the present invention;

[0038] The diagram is marked as follows:

[0039] 100, Surface layer; 200, Substrate layer; 300, Groove; 400, Isolation particles;

[0040] 1. Moving frame; 2. Mixing tank; 3. Liquid feed pipe; 4. Rotating shaft; 5. Dispersion disc; 6. Feed box; 7. Powder feed pipe; 8. Powder nozzle; 9. Support arm; 10. First telescopic airbag; 11. Air supply pipe; 12. Spiral drum; 13. Baffle cylinder; 14. Baffle vane; 15. Cleaning cotton; 16. Vent hole; 17. Air valve; 18. Second telescopic airbag; 19. Lifting rod; 20. Sealing frame; 21. Elastic membrane; 22. Air chamber; 23. Piston; 24. Lifting block; 25. Connecting rod; Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0044] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] Example 1

[0047] like Figure 1 and Figure 2 As shown, this embodiment discloses a high-barrier film for 5G technology, including a surface layer 100 and a substrate layer 200, which are bonded together by an adhesive; the substrate layer 200 has uniformly formed grooves 300 on the side facing the surface layer 100, and the opening of the grooves 300 is sealed by the surface layer 100; the grooves 300 are filled with an isolation medium, which is composed of a plurality of isolation particles 400; the isolation particles 400 can disperse outward when the substrate layer 200 is broken and form an isolation layer at the break point of the substrate layer 200.

[0048] In this embodiment, the surface layer 100 is set as an aluminum layer with a thickness of 0.01 to 0.03 mm.

[0049] In this embodiment, the substrate layer 200 is configured as a thermoplastic polyamide elastomer film substrate, and the thickness of the substrate layer 200 is 0.1-1 mm.

[0050] In this embodiment, the isolation particles 400 are further provided with some adhesive particles, which are made of adhesive and are disposed close to the surface layer.

[0051] In this embodiment, the isolating particles 400 comprise, by weight: 10-20 parts epoxy resin, 3-8 parts modified anti-settling agent, 3-6 parts dispersant, 2-6 parts stabilizer, and 10-25 parts nano silica powder.

[0052] Through the above technical solution, by setting grooves and isolation particles in the substrate layer, when the surface layer is damaged, the isolation particles in the grooves will escape to the damaged area and form an isolation layer. Furthermore, the damage will compress the adhesive particles, causing the adhesive inside the adhesive particles to escape and combine with the isolation particles at the damaged area, thus repairing the damage. The isolation layer formed when the surface layer is damaged can repair the diaphragm to a certain extent, improving its service life. The isolation layer can also effectively separate the inside and outside of the diaphragm, maintaining its isolation and anti-permeability functions even when damaged, allowing it to continue to be used even with minor damage, thus extending its service life.

[0053] Example 2

[0054] This embodiment also discloses a method for producing a diaphragm, applicable to the high-barrier membrane in Embodiment 1, comprising the following steps:

[0055] Preparation of S1 substrate layer 200: A thermoplastic polyamide elastomer is prepared as the substrate, and the substrate layer 200 is formed by stretching process. Both sides of the substrate layer 200 are corona treated, and a groove 300 is formed on one side of the substrate layer 200 by extrusion process.

[0056] Preparation of S2 isolation particles 400: 20 parts by weight of nano silica powder, 15 parts of epoxy resin, 3 parts of modified anti-settling agent and 3 parts of dispersant were added to a mixer and stirred thoroughly. Then, 2 parts of stabilizer were added and stirred. After stirring evenly, the mixture was dried to form particles, thus obtaining isolation particles 400.

[0057] S3 Filling: Place the isolation particles 400 obtained in S2 into the groove 300 of the substrate layer 200, and then add some adhesive particles made by adhesive on the top of the isolation particles 400.

[0058] S4 Composite: The filled substrate layer 200 is bonded to the aluminum layer with an adhesive to form a diaphragm.

[0059] The modified anti-settling agent is prepared as follows: 0.1-0.2 parts by weight of graphene oxide, 60-75 parts by weight of anhydrous ethanol, and 20-25 parts by weight of water are ultrasonically dispersed to obtain a graphene oxide suspension; 0.75-1 parts by weight of aminopropyltriethoxysilane are added to the graphene oxide suspension, and the mixture is heated and subjected to a hydrolysis reaction; after the hydrolysis reaction is completed, the suspension is centrifuged to obtain a solid crude product, which is then washed with water, washed with alcohol, and dried to obtain a black solid product for later use.

[0060] Take 0.1-0.2 parts of the black solid product and disperse it in 2-5 parts of N,N-dimethylformamide to obtain a reaction suspension; add 0.1-0.15 parts of 4-dimethylaminopyridine, 0.05-0.1 parts of triethylamine, and 1.5-3 parts of 2-bromo-2-methylpropionyl bromide to the reaction suspension, and carry out an esterification reaction under anaerobic conditions; after the esterification reaction is completed, the suspension is centrifuged to obtain a solid crude product, which is washed with water, washed with alcohol, and dried to obtain modified graphene oxide for later use;

[0061] 2-3 parts of sodium perfluorovalerate, 1-1.5 parts of aminocaproic acid, and 10-15 parts of tetrahydrofuran are mixed to obtain a reaction mixture. 0.05-0.2 parts of condensing agent are added to the reaction mixture and a condensation reaction is carried out under anaerobic conditions. After the condensation reaction is completed, the solvent tetrahydrofuran is removed to obtain a crude product. The crude product is reconstituted, recrystallized, and dried to obtain the condensation product for later use.

[0062] Under anaerobic conditions, 0.5–1 parts of the modified graphene oxide, 3.5–8 parts of the condensation product, and 75–100 parts of N,N-dimethylformamide were mixed, followed by the addition of 0.0001–0.0002 parts of pentamethyldiethylenetriamine and 0.1–0.225 parts of copper bromide, and the reaction was carried out. After the reaction was completed, the solid product was collected by centrifugation, washed with alcohol, and dried to obtain the modified anti-settling agent.

[0063] Among them, the adhesive particles are a coating layer with an inner adhesive and an outer polymer layer;

[0064] The polymer is a copolymer formed by copolymerizing a first monomer and a second monomer; the first monomer is selected from at least one of acrylate, methacrylic acid, methacrylate, vinylidene fluoride, and acrylonitrile; the second monomer is selected from at least one of styrene, vinyl chloride, perfluoropropylene, trifluorochloroethylene, tetrafluoroethylene, vinylidene chloride, and tetrachloroethylene.

[0065] The polymer has a softening point of 30°C to 80°C.

[0066] In addition, such as Figures 3-7As shown, the mixer in step S2 includes a movable frame 1 with rollers at the bottom for easy movement. A mixing tank 2 is fixed on the movable frame 1, and a liquid feed pipe 3 is installed on the upper cover of the mixing tank 2. A stirring mechanism is located inside the mixing tank 2 and includes a rotating shaft 4, multiple dispersing discs 5 mounted on the rotating shaft 4, and a drive unit for driving the rotating shaft 4 to rotate. A powder feeding mechanism is used for feeding nano-silica powder. The powder feeding mechanism includes two feed boxes 6 fixed on the side wall of the mixing tank 2 and a powder feed pipe 7 inclinedly mounted on the feed boxes 6 with one end inserted into the inside of the mixing tank 2. A powder nozzle 8 is installed on the powder feed pipe 7. The feed boxes 6 are fixed on the movable frame 1 by a support arm 9, and the two feed boxes 6 cooperate with the support arm 9 to clamp and fix the side wall of the mixing tank 2.

[0067] The drive unit includes a motor, a gearbox connected to it, a drive gear that is driven to rotate, and a driven gear fixed on the rotating shaft 4; the motor drives the drive gear to rotate through the gearbox, the drive gear drives the driven gear to rotate, and in turn drives the rotating shaft to rotate to perform stirring and dispersing work.

[0068] The stirring mechanism further includes a turbulence unit, which includes a first telescopic airbag 10 installed on the side of the rotating shaft 4; an air supply channel opened inside the rotating shaft 4, one end of which is connected to the first telescopic airbag 10, and the other end is connected to an external air pump through an air supply pipe 11; a spiral cylinder 12 installed on the end of the first telescopic airbag 10 away from the rotating shaft 4 through a bearing, and a spiral blade is provided on it; and a turbulence cylinder 13 fixed on the end of the spiral cylinder 12 away from the first telescopic airbag 10, and a turbulence blade 14 is provided on it.

[0069] like Figure 8 As shown, a cleaning cotton 15 is provided on the baffle cylinder 13. When the first telescopic airbag 10 is extended, it can drive the cleaning cotton 15 on the baffle cylinder 13 to contact the powder nozzle 8. A vent hole 16 is opened on the side of the baffle cylinder 13 facing the powder nozzle 8. An air valve 17 is provided inside the baffle cylinder 13. The spiral cylinder 12 connects the first telescopic airbag 10 and the baffle cylinder 13.

[0070] like Figure 9 and Figure 10As shown, in this embodiment, a dredging mechanism is also included. The dredging mechanism includes a second telescopic airbag 18, which is located inside the side wall of the mixing tank 2 and at the bottom of the powder feed pipe 7, and is connected to an external air pump; a lifting rod 19, which is fixed to the upper end of the second telescopic airbag 18 and is controlled to rise and fall by the second telescopic airbag 18; a sliding groove is provided on the side wall of the mixing tank 2 for the lifting rod 19 to slide; a sealing frame 20, which is fixed to the powder feed pipe 7 and closes the notch; an elastic membrane 21, which is provided at the notch of the powder feed pipe 7 and cooperates with the sealing frame 20 to form an air cavity 22; a piston 23, which is provided in the air cavity 22 and is sealed to the sealing frame 20; and a lifting block 24, which is fixed to the lifting rod 19 and located at the bottom of the sealing frame 20, and the piston 23 is connected to the lifting block 24 through a connecting rod 25.

[0071] The aforementioned air pump is supplied with nitrogen.

[0072] When performing the mixing process, the liquid material is first added into the mixing tank through the liquid inlet, and then the nano silica powder is added while stirring.

[0073] During stirring, the rotating shaft rotates while air is supplied to it via an air pump. The gas enters the first telescopic air bladder, which expands, causing the spiral cylinder and the turbulence cylinder to move towards the powder nozzle. During this movement, the spiral blades of the spiral cylinder contact the liquid, causing the spiral cylinder and the turbulence cylinder to rotate, generating a lateral stirring action inside. This creates a spiral flow of liquid within the mixing tank, and the lateral swirling flow, combined with the liquid flow generated by the rotation of the dispersion disc, impacts the mixing efficiency and washes the powder nozzle, preventing clumping and blockage. Simultaneously, it impacts the nano-silica powder into the liquid flow, further improving mixing efficiency.

[0074] As the first airbag continues to expand and elongate, the cleaning cotton comes into contact with the powder nozzle to further clean the powder nozzle. At the same time, the air valve is opened and gas is ejected. While cleaning the powder nozzle through gas jet, upward-flowing bubbles are generated in the liquid surface, which improves the fluidity of the stirred liquid and further enhances the stirring efficiency. In order to stably control the internal pressure, a corresponding pressure control and venting structure can be installed on the stirring tank.

[0075] After the first telescopic airbag extends until the cleaning cotton contacts the powder nozzle, the air valve is closed, the air pump starts to draw air, and the first telescopic airbag continues to contract; the above operation is repeated to drive the liquid flow in multiple directions and clean the powder nozzle.

[0076] To prevent blockages during powder feeding, a clearing mechanism is installed to clear blockages simultaneously with feeding. First, an air pump inflates the second telescopic air chamber, causing the lifting rod to move upward. Under the action of the lifting block and connecting rod, the piston moves upward, increasing the pressure in the air chamber and squeezing the elastic diaphragm to expand into the powder feeding pipe. Then, the air pump is controlled to extract air, causing the piston to move downward. The pressure in the air chamber continuously decreases, causing the elastic diaphragm to contract into the air chamber. By repeatedly controlling the air chamber to extract and inflate, the elastic diaphragm repeatedly moves, causing it to expand and contract, generating vibrations that shake off the powder adsorbed on the powder feeding pipe, preventing blockages.

[0077] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A high-barrier film for 5G technology, characterized in that: It includes a surface layer and a substrate layer, which are bonded together by an adhesive; The substrate layer has uniformly formed grooves on the side facing the surface layer, and the opening of the grooves is sealed by the surface layer. The groove is filled with an isolation medium, which is composed of several isolation particles; these isolation particles can disperse outward when the substrate layer is broken and form an isolation layer at the break point of the substrate layer. The surface layer is an aluminum layer with a thickness of 0.01 to 0.03 mm; The substrate layer is configured as a thermoplastic polyamide elastomer film substrate, and the thickness of the substrate layer is 0.1-1 mm; The isolation particles also contain some adhesive particles, which are made of adhesive. The separating particles, by weight, comprise: 10-20 parts epoxy resin, 3-8 parts modified anti-settling agent, 3-6 parts dispersant, 2-6 parts stabilizer, and 10-25 parts nano silica powder. The process includes the following steps: S1. Preparation of the substrate layer: a thermoplastic polyamide elastomer is prepared as the substrate, the substrate layer is formed by stretching, both sides of the substrate layer are corona treated, and a groove is formed on one side of the substrate layer by extrusion. Preparation of S2 isolation particles: 20 parts by weight of nano silica powder, 15 parts of epoxy resin, 3 parts of modified anti-settling agent and 3 parts of dispersant are added to a mixer and stirred thoroughly. Then, 2 parts of stabilizer are added and stirred again. After stirring evenly, the mixture is dried to form particles to obtain isolation particles. S3 Filling: Place the isolation particles obtained in S2 into the groove of the substrate layer, and then add some adhesive particles made by adhesive on top of the isolation particles. S4 composite: The filled substrate layer and the aluminum layer are bonded together with an adhesive to form a diaphragm; The mixer in step S2 includes a movable frame on which a mixing tank is fixed, and a liquid inlet pipe is installed on the upper cover of the mixing tank. A stirring mechanism, located inside a stirring tank, includes a rotating shaft, multiple dispersing discs mounted on the rotating shaft, and a drive unit that drives the rotating shaft to rotate. A powder feeding mechanism for feeding nano-silica powder; The powder feeding mechanism includes two feeding boxes fixed on the side wall of the mixing tank, and a powder feeding pipe that is inclinedly installed on the feeding boxes and inserted into the inside of the mixing tank at one end; a powder nozzle is installed on the powder feeding pipe. Furthermore, the feed box is fixed to the movable frame by the support arm, and the two feed boxes work together with the support arm to clamp and fix the side wall of the mixing tank; The stirring mechanism also includes a turbulence unit, which includes a first telescopic airbag installed on the side of the rotating shaft. An air supply channel is located inside the rotating shaft, with one end connected to the first telescopic airbag and the other end connected to an external air pump via an air supply pipe. The spiral cylinder is fixed at the end of the first telescopic airbag away from the rotation axis; A turbulence-inducing cylinder is fixed at the end of the spiral cylinder away from the first telescopic airbag, and turbulence-inducing blades are provided on it. The baffle tube is equipped with a cleaning cotton, and when the first telescopic airbag is extended, it can drive the cleaning cotton on the baffle tube to come into contact with the powder nozzle. The turbulence cylinder has a vent hole on the side facing the powder nozzle, and an air valve is installed inside the turbulence cylinder. The spiral cylinder is connected to the first telescopic airbag and the turbulence cylinder. It also includes a dredging mechanism, which includes a second telescopic airbag located inside the side wall of the mixing tank and at the bottom of the powder feed pipe, and is connected to an external air pump. The lifting rod is fixed to the upper end of the second telescopic airbag and is raised and lowered by the second telescopic airbag. The side wall of the mixing tank is provided with a sliding groove for the lifting rod to slide. A sealing frame is provided on the powder feed pipe, which has a notch, and the sealing frame is fixed on the powder feed pipe and closes the notch; An elastic membrane is placed at the notch of the powder feed pipe and forms an air cavity in conjunction with the sealing frame; The piston is located inside the air chamber and is sealed to the sealing frame. The lifting block is fixed on the lifting rod and located at the bottom of the sealing frame. The piston is connected to the lifting block through a connecting rod.

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