Graphene heat-dissipation AB adhesive optical film and glass toughened film

Abstract

The utility model discloses a graphene heat dissipation AB adhesive optical film and a tempered glass film, and the graphene heat dissipation AB adhesive optical film comprises a PET base film which comprises a first surface and a second surface; the graphene heat dissipation and exhaust silica gel layer is extruded and coated on the first surface through the slit and is used for dissipating heat of the screen from the peripheral side of the graphene heat dissipation and exhaust silica gel layer; the heat insulation coating is arranged on the second surface through a micro-concave roller in a kiss-coating mode and used for preventing external heat from being transmitted downwards; the surface, away from the second surface, of the heat insulation coating is coated with the graphene heat dissipation OCA layer through paired rollers, the graphene heat dissipation OCA layer is used for dissipating external heat from the peripheral side of the graphene heat dissipation OCA layer, the thickness of the PET base film is 50-75 microns, the thickness of the graphene heat dissipation exhaust silica gel layer is 40-50 microns, the thickness of the heat insulation coating is 5-8 microns, and the thickness of the graphene heat dissipation OCA layer is 240-270 microns. Through the application, the problem of poor heat dissipation effect of the glass toughened film caused by poor heat dissipation effect of AB glue or no effective heat dissipation structure is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical film technical field especially relates to graphene heat dissipation AB glue optical film and glass toughened film. BACKGROUND

[0002] In the related art, electronic products such as smart phones, tablet computers and smart wearable devices often paste protective films, such as toughened films, to protect the liquid crystal display screens and touch screens of the electronic products to prevent screen breakage.

[0003] In the related art, smart phones, tablet computers and smart wearable devices will inevitably generate a large amount of heat during long-term use, which not only affects the service life and experience effect of the devices, but also poses certain safety hazards, such as terminal product short circuit or battery explosion. After the glass toughened film is pasted, the heat generated by the related electronic products will further exacerbate the impact on the devices, making the electronic devices more prone to overheating and affecting user use. At the same time, the glass toughened film in the related art is provided with AB glue, but the existing AB glue has poor heat dissipation effect or the composite structure of the AB glue does not have an effective heat dissipation structure, thereby causing poor heat dissipation effect of the glass toughened film.

[0004] At present, there is no effective solution to the problem of poor heat dissipation effect of AB glue or the composite structure of AB glue not having an effective heat dissipation structure, thereby causing poor heat dissipation effect of the glass toughened film in the related art. SUMMARY

[0005] Therefore, it is necessary to provide a graphene heat dissipation AB glue optical film and glass toughened film to at least solve the problem of poor heat dissipation effect of AB glue or the composite structure of AB glue not having an effective heat dissipation structure, thereby causing poor heat dissipation effect of the glass toughened film in the related art.

[0006] In a first aspect, the embodiments of the present application provide a technical solution as follows: a graphene heat dissipation AB glue optical film for a glass toughened film, comprising: a PET base film including a first surface and a second surface; a graphene heat dissipation exhaust silicone layer disposed on the first surface through slit extrusion coating and used for dissipating screen heat from the periphery of the graphene heat dissipation exhaust silicone layer; a heat insulation coating layer coated on the second surface through micro-concave roller kiss and used for isolating the downward transmission of external heat; and a graphene heat dissipation OCA layer coated on one side of the heat insulation coating layer away from the second surface through roll coating and used for dissipating external heat from the periphery of the graphene heat dissipation OCA layer, wherein the thickness of the PET base film is 50-75 μm, the thickness of the graphene heat dissipation exhaust silicone layer is 40-50 μm, the thickness of the heat insulation coating layer is 5-8 μm, and the thickness of the graphene heat dissipation OCA layer is 240-270 μm.

[0007] In the graphene heat dissipation AB glue optical film, graphene heat dissipation exhaust silicone rubber layer is arranged on the side close to the screen, and the heat of the screen is effectively dissipated through the graphene heat dissipation exhaust silicone rubber layer. The heat radiation from the outside is effectively blocked through the arrangement of the heat insulation layer and the graphene heat dissipation OCA layer on the side close to the outside, thereby effectively dissipating heat from the electronic device, keeping the electronic device at a suitable temperature during use, prolonging the service life and use effect of the electronic device, and solving the problem of poor heat dissipation effect of AB glue or the absence of effective heat dissipation structure in the composite structure of AB glue in the related art, thereby causing poor heat dissipation effect of the glass toughened film.

[0008] In order to protect the optical film before use, in some embodiments, one side of the graphene heat dissipation exhaust silicone rubber layer away from the first surface is provided with a first release film, and the other side of the graphene heat dissipation OCA layer away from the heat insulation coating is provided with a second release film, wherein the thicknesses of the first release film and the second release film are both 50-75 μm.

[0009] In order to quickly separate the corresponding optical film when the optical film is used, the first release film comprises a heavy release film with a thickness of 75 μm, and / or the second release film comprises a light release film with a thickness of 50 μm.

[0010] It can be understood that, by arranging the heavy release film at the lower end surface of the graphene heat dissipation AB glue optical film, that is, arranging the first release film at the lower end surface of the optical film, the operator can easily tear the release film, and the first release film is less likely to adhere to the graphene heat dissipation AB glue optical film and not separated from the graphene heat dissipation AB glue optical film. At the same time, by arranging the light release film at the upper end surface of the graphene heat dissipation AB glue optical film, the operator can easily tear the release film, and the second release film is less likely to adhere to the graphene heat dissipation AB glue optical film and not separated from the graphene heat dissipation AB glue optical film.

[0011] In some embodiments, the graphene heat dissipation exhaust silicone rubber layer is a graphene-polydimethylsiloxane-silicone coating, and the thickness of the graphene heat dissipation exhaust silicone rubber layer is 40 μm.

[0012] In some embodiments, the heat insulation coating is a nano acrylic glue coating, and the thickness of the heat insulation coating is 8 μm.

[0013] In some embodiments, the graphene heat dissipation OCA layer is a graphene-acrylic glue coating, and the thickness of the graphene heat dissipation OCA layer is 240 μm.

[0014] In some embodiments, the PET base film comprises one of the following: a PET base material with a thickness of 50 μm, and a PET base material with a thickness of 75 μm.

[0015] In a second aspect, the embodiments of the present application further provide a tempered glass film comprising the graphene heat dissipation AB glue optical film of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structural view of the graphene heat dissipation AB glue optical film according to the embodiments of the present application.

[0017] Figure 2 A heat dissipation schematic diagram of the graphene heat dissipation AB glue optical film of the embodiments of the present application;

[0018] Figure 3 A principle schematic diagram of the graphene heat dissipation based on the embodiments of the present application;

[0019] Figure 4 A structural view of the graphene heat dissipation AB glue optical film according to the preferred embodiments of the present application.

[0020] Reference signs:

[0021] 100, PET base film; 200, graphene heat dissipation exhaust silica gel layer; 300, heat insulation coating; 400, graphene heat dissipation OCA layer; 500, first release film; 600, second release film. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] It should be noted that when a component is referred to as "mounted on" another component, it can be directly mounted on the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. When a component is referred to as "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0025] The graphene heat dissipation AB glue optical film provided by the embodiment of the application is applied to a glass toughening film, and after the corresponding glass toughening film is used for a mobile phone, an IPAD, can effectively dissipate heat and insulate heat, so that the device works more safely, has a longer service life and a more smooth application experience.

[0026] Figure 1 The graphene heat dissipation AB glue optical film provided by the embodiment of the application is applied to a glass toughening film, and after the corresponding glass toughening film is used for a mobile phone, an IPAD, can effectively dissipate heat and insulate heat, so that the device works more safely, has a longer service life and a more smooth application experience.

[0027] Please refer to Figures 1 to 4 The graphene heat dissipation AB glue optical film provided by the embodiment of the application is applied to a glass toughening film, and after the corresponding glass toughening film is used for a mobile phone, an IPAD, can effectively dissipate heat and insulate heat, so that the device works more safely, has a longer service life and a more smooth application experience.

[0028] The PET base film 100 comprises a first surface and a second surface.

[0029] The graphene heat dissipation exhaust silica gel layer 200 is arranged on the first surface through slit extrusion coating and is used for dissipating the screen heat from the periphery of the graphene heat dissipation exhaust silica gel layer 200.

[0030] In the embodiment, referring to Figure 2 and Figure 3 , the graphene lattice as shown in Figure 3 is formed in the graphene heat dissipation exhaust silica gel layer 200, when the screen heat source generated by the screen of the electronic device enters the graphene heat dissipation exhaust silica gel layer 200, the graphene lattice will be excited to vibrate and be active in electrons, so as to convert the screen heat source into a large amount of thermal infrared radiation and radiate from the periphery, thereby realizing the dissipation of the screen heat from the periphery of the graphene heat dissipation exhaust silica gel layer 200.

[0031] The heat insulation coating 300 is kiss coated on the second surface through a micro-concave roller and is used for isolating the downward transmission of external heat.

[0032] In the embodiment, referring to Figure 2 , after the external heat is dissipated through the graphene heat dissipation OCA layer 400, part of the heat will be blocked by the heat insulation coating and radiate to the graphene heat dissipation OCA layer 400 in the reverse direction, and then after the heat conversion through the graphene heat dissipation OCA layer 400, the heat is radiated.

[0033] The graphene heat dissipation OCA layer 400 is coated on the side of the heat insulation coating 300 away from the second surface through a roller and is used for dissipating the external heat from the periphery of the graphene heat dissipation OCA layer.

[0034] In the embodiment, referring to Figure 2 and Figure 3, graphene lattice is formed in the graphene heat dissipation OCA layer 400, when external heat enters the graphene heat dissipation exhaust silica gel layer 200, the graphene lattice will be excited to vibrate and the electron is active, thereby converting external heat into a large amount of thermal infrared radiation and emitting from the surrounding, thereby realizing the dissipation of external heat from the surrounding of the graphene heat dissipation OCA layer 400. Figure 3

[0035] The thickness of the PET base film 100 is 50-75 μm, the thickness of the graphene heat dissipation exhaust silica gel layer 200 is 40-50 μm, the thickness of the heat insulation coating layer 300 is 5-8 μm, and the thickness of the graphene heat dissipation OCA layer 400 is 240-270 μm.

[0036] In the graphene heat dissipation AB glue optical film, the graphene heat dissipation exhaust silica gel layer 200 is arranged on the side close to the screen, which effectively dissipates the heat of the screen, and the heat insulation layer 300 and the graphene heat dissipation OCA layer 400 are arranged on the side close to the outside, thereby effectively blocking the external heat radiation, thereby effectively dissipating the heat of the electronic device, keeping the electronic device at a suitable temperature during use, prolonging the service life and use effect of the electronic device.

[0037] It should be noted that, referring to Figure 3 and Figure 4 , the first surface of the contact intelligent device is the graphene heat dissipation exhaust silica gel layer 200, and the heat generated inside the intelligent device is quickly dissipated through the graphene heat dissipation exhaust silica gel layer 200; the heat radiated to the intelligent device from the outside (such as under the sun) is quickly dissipated through the graphene heat dissipation OCA layer 400; and the part that has not been dissipated can be blocked by a heat insulation coating layer 300, thereby ensuring that the intelligent device itself is in a relatively low temperature working state.

[0038] It should be further noted that, referring to Figure 3 , nano graphene as an advanced material has shown excellent performance in the field of heat dissipation, and its unique single-layer honeycomb structure endows graphene with ultra-high thermal conductivity and extremely low heat capacity. These two characteristics are the key to the high-efficiency heat dissipation of graphene. The graphene heat dissipation exhaust silica gel layer 200 and the graphene heat dissipation OCA layer 400 are added with a proper proportion of nano graphene by dispersion method, thereby achieving the effect of effective heat dissipation.

[0039] ​In the embodiment, the graphene heat dissipation exhaust silica gel layer 200 is prepared by the following method: graphene is mixed with polysiloxane organic silica gel water at a mass ratio of 5-8:100, and then ultrasonic dispersion stirring is performed for 45-55 minutes to uniformly disperse the graphene in the organic silica gel water; after the graphene-containing organic silica gel water is prepared, the PET base film 100 is coated by a slit extrusion coating method, and the coating thickness is controlled to be 40-50 um; at the same time, the glue supply device is equipped with stirring, and the glue is supplied while stirring to ensure the uniformity of the graphene dispersion during the coating process.

[0040] In the embodiment, the heat insulation coating layer 300 is prepared by the following method: nano-CTO dispersion liquid is mixed with acrylic glue at a mass ratio of 8-12:100, and then stirred for 60 minutes; and then the PET base film 100 is coated by a micro-concave roller coating method on the other side, and the coating thickness is controlled to be 5-8 um.

[0041] In the embodiment, the graphene heat dissipation OCA layer 400 is prepared by the following method: graphene is mixed with solvent-free photocurable acrylic glue at a mass ratio of 3-5:100, and then ultrasonic dispersion stirring is performed for 50-60 minutes to uniformly disperse the graphene in the glue; after the glue is prepared, the heat insulation coating layer 300 is coated by a roller coating method, and the coating thickness is controlled to be 240-270 um; at the same time, a stirring device is installed in the glue supply groove to ensure the uniformity of the graphene dispersion during the coating process.

[0042] In order to protect the optical film before use, in some embodiments, the graphene heat dissipation exhaust silica gel layer 200 is provided with a first release film 500 away from the first surface, and the graphene heat dissipation OCA layer 400 is provided with a second release film 600 away from the heat insulation coating layer 300, wherein the thicknesses of the first release film 500 and the second release film 600 are both 50-75 um.

[0043] In order to quickly separate the corresponding optical film when the optical film is used, in some embodiments, the first release film 500 includes a heavy release film with a thickness of 75 um, and the second release film 600 includes a light release film with a thickness of 50 um.

[0044] It can be understood that, in this way, by arranging the heavy release film at the lower end face of the graphene heat dissipation AB glue optical film, that is, arranging the first release film 500 at the lower end face of the optical film, the operator can conveniently tear the release film, and the first release film 500 is less likely to adhere to the graphene heat dissipation AB glue optical film and not separated from the graphene heat dissipation AB glue optical film; at the same time, by arranging the light release film at the upper end face of the graphene heat dissipation AB glue optical film, the operator can conveniently tear the release film, and the second release film 600 is less likely to adhere to the graphene heat dissipation AB glue optical film and not separated from the graphene heat dissipation AB glue optical film.

[0045] In some embodiments, the graphene heat dissipation exhaust silica gel layer 200 is a graphene-polydimethylsiloxane-silicone coating, and the thickness of the graphene heat dissipation exhaust silica gel layer 200 is 40 μm.

[0046] In some embodiments, the heat insulation coating 300 is a nano acrylic coating, and the thickness of the heat insulation coating 300 is 8 μm.

[0047] In some embodiments, the graphene heat dissipation OCA layer 400 is a graphene-acrylic coating, and the thickness of the graphene heat dissipation OCA layer 400 is 240 μm.

[0048] In some embodiments, the PET base film 100 includes one of the following: a 50 μm PET base material, a 75 μm PET base material.

[0049] The embodiments of the present application also provide a tempered glass film, which includes the graphene heat dissipation AB glue optical film in the above embodiments.

[0050] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0051] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application, and as long as the above embodiments are appropriately changed and changed within the scope of the spirit of the present application, they fall within the scope of the present application.

Claims

1. A graphene heat dissipating AB-gel optical film for glass toughening film, characterized in that, The application relates to a graphene heat-dissipation AB adhesive optical film. The graphene heat-dissipation AB adhesive optical film comprises the following components: a PET base film (100) comprising a first surface and a second surface; a graphene heat-dissipation exhaust silica gel layer (200) arranged on the first surface through slit extrusion coating and used for dissipating screen heat from the periphery of the graphene heat-dissipation exhaust silica gel layer (200); a heat insulation coating (300) coated on the second surface through a micro-concave roller and used for isolating external heat from being transmitted downward; a graphene heat-dissipation OCA layer (400) coated on the side of the heat insulation coating (300) away from the second surface through a roller and used for dissipating external heat from the periphery of the graphene heat-dissipation OCA layer, wherein 2. The graphene heat spreading AB gel optical film according to claim 1, wherein, the thickness of the PET base film (100) is 50-75 mu m, the thickness of the graphene heat-dissipation exhaust silica gel layer (200) is 40-50 mu m, the thickness of the heat insulation coating (300) is 5-8 mu m, and the thickness of the graphene heat-dissipation OCA layer (400) is 240-270 mu m.

3. The graphene heat spreading AB gel optical film according to claim 2, wherein, The side of the graphene heat-dissipation exhaust silica gel layer (200) away from the first surface is provided with a first release film (500), and the other side of the graphene heat-dissipation OCA layer (400) away from the heat insulation coating (300) is provided with a second release film (600), wherein the thickness of the first release film (500), the first release film (500) and the second release film (600) is 50-75 mu m.

4. The graphene heat spreading AB gel optical film according to claim 1, wherein, The first release film (500) comprises a heavy release film with a thickness of 75 mu m, and / or the second release film (600) comprises a light release film with a thickness of 50 mu m.

5. The graphene heat spreading AB gel optical film of claim 1, wherein, The graphene heat-dissipation exhaust silica gel layer (200) is a graphene-polysiloxane-silicone coating layer, and the thickness of the graphene heat-dissipation exhaust silica gel layer (200) is 40 mu m.

6. The graphene heat spreading AB gel optical film of claim 1, wherein, The heat insulation coating (300) is a nano acrylic coating layer, and the thickness of the heat insulation coating (300) is 8 mu m.

7. The graphene heat spreading AB gel optical film of claim 1, wherein, The graphene heat-dissipation OCA layer (400) is a graphene-acrylic coating layer, and the thickness of the graphene heat-dissipation OCA layer (400) is 240 mu m.

8. A glass toughened film characterized in that, The PET base film (100) comprises one of the following: a 50 mu m PET base material and a 75 mu m PET base material. The graphene heat-dissipation AB adhesive optical film comprises the graphene heat-dissipation AB adhesive optical film according to any one of claims 1 to 7.

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