WO2023124198A1 - 面漆组合物、复合材料、电子设备中框、电子设备壳体和电子设备 - Google Patents

面漆组合物、复合材料、电子设备中框、电子设备壳体和电子设备 Download PDF

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Publication number
WO2023124198A1
WO2023124198A1 PCT/CN2022/117290 CN2022117290W WO2023124198A1 WO 2023124198 A1 WO2023124198 A1 WO 2023124198A1 CN 2022117290 W CN2022117290 W CN 2022117290W WO 2023124198 A1 WO2023124198 A1 WO 2023124198A1
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Prior art keywords
mass
parts
layer
electronic device
topcoat
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PCT/CN2022/117290
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English (en)
French (fr)
Inventor
王晓光
霍国亮
高漫
王刚
臧永强
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荣耀终端有限公司
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Priority to EP22879604.1A priority Critical patent/EP4227375A4/en
Publication of WO2023124198A1 publication Critical patent/WO2023124198A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • C08F290/067—Polyurethanes; Polyureas
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0243—Mechanical details of casings for decorative purposes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2170/00—Compositions for adhesives
    • C08G2170/20—Compositions for hot melt adhesives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of electronic equipment, in particular to a topcoat composition, a composite material, a middle frame of an electronic equipment, an electronic equipment casing and an electronic equipment.
  • the screen of the electronic device is bonded to the casing of the electronic device by glue, for example, the screen is directly bonded to the battery cover by battery cover glue, or the screen is bonded to the middle frame of the electronic device by caulking glue.
  • glue for example, the screen is directly bonded to the battery cover by battery cover glue, or the screen is bonded to the middle frame of the electronic device by caulking glue.
  • plastic can make electronic equipment thinner and lighter.
  • the spraying process is generally used to decorate the appearance of the plastic middle frame or battery cover, and an ink layer including a primer layer, an effect layer and a topcoat layer is formed on the plastic substrate, and the topcoat layer is used as the outermost protective coating.
  • the application provides a topcoat composition, a composite material, a middle frame of an electronic device, an electronic device housing and an electronic device, which solves the technical problem of poor adhesion between the plastic middle frame or battery cover and the glue in the electronic device.
  • a topcoat composition comprising:
  • film-forming resin which includes one or more of acrylic resin and polyurethane acrylate resin
  • leveling agent 0.5-10 parts by mass of leveling agent
  • the topcoat composition provided by this application uses one or more of acrylic resin and polyurethane acrylate resin as film-forming substances, and cooperates with acrylic monomers to cross-link and cure under the action of ultraviolet light to form a film with good reliability and adhesion.
  • the topcoat with junction performance can be used as the topcoat layer of the middle frame of the electronic equipment and the battery cover of the electronic equipment. It can have good bonding performance with the glue without etching off the topcoat layer, thereby preventing the screen of the electronic equipment from falling off.
  • Experimental results show that the shear strength between the topcoat provided by the application and the PUR glue can reach more than 20MPa.
  • the topcoat composition comprises:
  • the film-forming resin is selected from one or more of acrylic resins and polyurethane acrylate resins;
  • the film-forming resin is polyurethane acrylate EB600; the acrylate monomer is tripropylene glycol diacrylate and lauryl acrylate with a mass ratio of 1:2; the photoinitiator is that the mass ratio is 1: 1 TPO and 184; the leveling agent is BYK373 and TEGO900 with a mass ratio of 5:1; the solvent is acetone and n-butanol with a volume ratio of 1:1; the matting powder is fumed silica or precipitated method silica.
  • the topcoat composition provided in the above examples has excellent shear strength, and can directly replace the topcoat used in the current ink layer without changing the production process of the middle frame or battery cover, and without etching the ink layer. Bond the step adhesive to the middle frame or battery cover to prevent the touch screen of the whole machine from falling off and the glue line to fall off, and improve the reliability of electronic equipment.
  • the embodiment of the present application also provides a composite material, including:
  • a topcoat layer compounded on the plastic substrate layer, the topcoat layer is obtained by cross-linking and curing the topcoat composition described in the above technical solution.
  • the above-mentioned composite material can be made into the middle frame of electronic equipment or the battery cover of electronic equipment.
  • the topcoat layer is used as the outermost layer of the middle frame or battery cover. It can be bonded to the screen by glue without etching to prevent the touch screen of the whole machine from falling off and The glue line falls off, improving the service life of electronic equipment.
  • the topcoat layer has good reliability.
  • Fig. 1 is a typical structure diagram of mobile phone
  • Fig. 2 is a structural schematic diagram of the A-A side of the mobile phone shown in Fig. 1;
  • Fig. 3 is the structural representation of the composite material provided by the embodiment of the present application.
  • Fig. 4 is the mobile phone provided by the first embodiment of the present application and its cross-sectional structure schematic diagram
  • Fig. 4a is the mobile phone structural representation provided by the first embodiment of the present application
  • Fig. 4b is the structural representation of the mobile phone section A-A shown in Fig. 4a;
  • Fig. 5 is a schematic diagram of the laminated structure of the middle frame provided by the first embodiment of the present application.
  • FIG. 6 is a schematic diagram of the mobile phone and its cross-sectional structure provided by the second embodiment of the present application
  • FIG. 6a is a schematic structural diagram of the mobile phone provided by the second embodiment of the present application
  • FIG. 6b is a schematic structural diagram of the cross-section B-B of the mobile phone shown in FIG. 6a;
  • Fig. 7 is a schematic diagram of the mobile phone and its cross-sectional structure provided by the third embodiment of the present application, wherein Fig. 7a is a schematic structural diagram of the mobile phone provided by the third embodiment of the present application, and Fig. 7b is a schematic structural diagram of the cross-section C-C of the mobile phone shown in Fig. 7a;
  • FIG. 8 is a test device provided in an embodiment of the present application.
  • one or more refers to one, two or more than two; "and/or” describes the association relationship of associated objects, indicating that there may be three types of relationships; for example, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone, wherein A and B may be singular or plural.
  • the character "/" generally indicates that the contextual objects are an "or" relationship.
  • references to "one embodiment” or “some embodiments” or the like in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically stated otherwise.
  • the terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless specifically stated otherwise.
  • a plurality referred to in the embodiment of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, words such as “first” and “second” are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or imply order.
  • orientation words such as up, down, inside, and outside involved in the embodiments of the present application are relative terms, and those skilled in the art can understand that when the direction is changed, the orientation will also change accordingly.
  • the reliability involved in the examples of this application includes adhesion, RCA paper tape wear resistance, alcohol friction, rubber friction, vibration friction, pencil hardness, dirt resistance, Newton pen, micro Vickers hardness, cosmetics resistance, and hand resistance Sweat, low temperature storage, high temperature storage, alternating heat and humidity, temperature shock, solar radiation, salt spray, boiling and other tests.
  • the adhesive performance involved in the examples of the present application refers to the adhesive performance between the bonding surfaces, which is represented by shear strength in the present application.
  • Figure 1 is a schematic structural diagram of a typical mobile phone
  • Figure 2 is a schematic structural diagram of the A-A side of the mobile phone shown in Figure 1, where 101 is the middle frame, 102 is the display module, 103 is a touch/display module, and 104 is a step adhesive.
  • the mobile phone 10 includes a middle frame 101.
  • the middle frame 101 has a bottom surface and side surfaces, forming an accommodating space inside, capable of accommodating a display module 102 and a touch/display module 103.
  • the touch/display module 103 is arranged above the display module 102.
  • a groove is opened on the top of the middle frame 101 so that the inner surface forms a two-stage stepped structure, and the touch/display module 103 is bonded to the first step of the middle frame 101 through the step adhesive 104, so that the touch/display module 103 and the middle frame 101 forms a closed space.
  • the laminated structure of the middle frame 401 includes a plastic substrate layer 1011 and an ink layer 1012.
  • the ink layer 1012 is generally a laminated structure, including: a primer layer in contact with the plastic substrate layer 1011, an effect layer and Topcoat layer, wherein, as the outermost layer of the middle frame 401, the topcoat layer has the characteristics of high crosslinking degree and non-recoatability.
  • the topcoat layer has the characteristics of high crosslinking degree and non-recoatability.
  • the ink layer of the contact part of the two is etched away, but the plastic substrate layer has a lower surface affinity, resulting in poor adhesion to the step glue.
  • the embodiment of the present application provides a topcoat composition.
  • the topcoat composition In addition to meeting the requirements of the outermost layer of the middle frame for wear resistance and stain resistance, the topcoat composition also has a certain adhesion. There is no need to etch off the ink layer at the step glue 104, so that the step glue 104 and the ink layer 1012 have good adhesion performance, preventing the screen of the electronic device from falling off.
  • the topcoat composition provided by the application comprises:
  • the film-forming resin is selected from one or more of acrylic resins and polyurethane acrylate resins;
  • leveling agent 0.5-10 parts by mass of leveling agent
  • the topcoat composition provided by the present application includes a film-forming resin, and the film-forming resin is selected from one or more of acrylic resins and urethane acrylates.
  • Acrylic resin and polyurethane acrylate are the main film-forming substances in the topcoat composition.
  • the acrylic resin is at least one selected from four-functional modified acrylic resins, including but not limited to EB810, Changxing 6261 and the like.
  • the urethane acrylate is selected from at least one of the hexafunctional aliphatic urethane acrylates, the hexafunctional aliphatic urethane acrylates include but are not limited to models ST8106, EB600, EB145, EB524, CN966J5 wait.
  • the content of the film-forming resin is 40-55 parts by mass. In one embodiment, the content of the film-forming resin is 45-50 parts by mass.
  • the topcoat composition provided by the present application includes an acrylate monomer, and the function of the acrylate monomer is to cure and crosslink with an acrylic resin or polyurethane acrylate, so as to improve the performance of the obtained topcoat.
  • the acrylate monomer is selected from one or more of acrylate monomers or modified acrylate monomers, acrylate monomers include but not limited to tripropylene glycol diacrylate (TPGDA), 1,6-hexanediol diacrylate (HDDA), trimethylolpropane triacrylate (TMP-TA), hydroxypropyl acrylate, hydroxyethyl acrylate, lauryl acrylate (LA), etc.
  • the acrylic monomer is a mixture of tripropylene glycol diacrylate and lauryl acrylate.
  • the mass ratio of tripropylene glycol diacrylate to lauryl acrylate is 1-2:1-3. In one embodiment, the mass ratio of tripropylene glycol diacrylate to lauryl acrylate is 1:2.
  • the content of the acrylate monomer is 8-18 parts by mass. In one embodiment, the content of the acrylate monomer is 10-15 parts by mass.
  • the topcoat composition provided by the application includes a photoinitiator, and the function of the photoinitiator is to initiate curing and crosslinking of the film-forming resin and acrylic monomer under the action of ultraviolet light (UV), and the photoinitiator includes but is not limited to Darocur 1173, TPO, Irgacure 184, Irgacure 369, etc.
  • the photoinitiator is one or more of Darocur 1173, TPO, Irgacure 184 or Irgacure 369.
  • the photoinitiator is a mixture of TPO and Irgacure 184.
  • the mass ratio of TPO and Irgacure 184 is 1-2:1-2.
  • the mass ratio of TPO and Irgacure 184 is 1:1.
  • the content of the photoinitiator is 1.5-8 parts by mass. In one embodiment, the content of the photoinitiator is 2-4 parts by mass.
  • the top paint composition provided by the present application includes a leveling agent, and the function of the leveling agent is to make the obtained top paint coating smooth, smooth and uniform.
  • the leveling agent includes at least a silicone leveling agent.
  • the leveling agent includes a silicone leveling agent and a polyacrylate leveling agent, wherein the content of the silicone leveling agent is not less than 2%.
  • the silicone leveling agent is selected from TEGO900, TEGO920 or BYK373.
  • the leveling agent is a mixture of BYK373 and TEGO900.
  • the mass ratio of BYK373 to TEGO900 is 3-8:1.
  • the mass ratio of BYK373 to TEGO900 is 5:1.
  • the leveling agent is used in an amount of 0.8-8 parts by mass.
  • the leveling agent is used in an amount of 1-5 parts by mass.
  • the topcoat composition provided in the present application is a solvent-based topcoat composition, which includes a solvent.
  • the role of the solvent is to dissolve each component as a medium and make each component undergo curing and crosslinking under the action of ultraviolet light and a photoinitiator.
  • the solvent is a mixed solvent, selected from any two or more of acetone, n-butanol, ethylene glycol butadiene, and ethyl acetate.
  • the solvents are acetone and n-butanol.
  • the solvent is acetone and ethylene glycol butadiene.
  • the solvent is acetone and ethyl acetate.
  • the solvent is n-butanol and ethylene glycol butadiene. In one embodiment, the solvent is n-butanol and ethyl acetate. In one embodiment, the solvent is ethylene glycol butadiene and ethyl acetate. In one embodiment, the solvents are acetone, n-butanol and ethylene glycol butadiene. In one embodiment, the solvent is acetone, n-butanol and ethyl acetate. In one embodiment, the solvent is n-butanol, ethylene glycol butadiene and ethyl acetate.
  • the solvent is acetone, n-butanol, ethylene glycol butadiene, and ethyl acetate.
  • This application has no special restrictions on the amount of each component in the solvent.
  • the mass ratio of the two components is 1-3:1-3; in a three-component solvent, the mass ratio of the three components is 1 ⁇ 3:1 ⁇ 3:1 ⁇ 3; in the four-component solvent, the mass ratio of the four components is 1 ⁇ 3:1 ⁇ 3:1 ⁇ 3:1 ⁇ 3.
  • the solvent is used in an amount of 25-40 parts by mass.
  • the topcoat composition provided by the present application may also include a matting agent, and the topcoat coating formed after curing exhibits a matte effect.
  • the matting agent is a silica matting agent, such as an organically modified chemically precipitated silica or a fumed silica matting agent, and matting wax slurry cannot be used.
  • the particle size of the matting agent is 3-12 microns.
  • the amount of the matting agent is 5-15 parts by mass.
  • the topcoat composition provided by the application comprises:
  • the film-forming resin is selected from one or more of acrylic resins and polyurethane acrylate resins;
  • the topcoat composition provided by the application comprises:
  • the film-forming resin is selected from one or more of acrylic resins and polyurethane acrylate resins;
  • the topcoat composition provided by the present application can be cross-linked and cured under the action of ultraviolet light to form a topcoat, which has good reliability and bonding performance, and can be used as a topcoat layer for the middle frame of an electronic device and the battery cover of an electronic device.
  • Experimental results show that the shear strength between the topcoat provided by the application and the PUR glue can reach more than 20MPa.
  • the application also provides a composite material, comprising:
  • a topcoat layer compounded on the plastic substrate layer, the topcoat layer is obtained by cross-linking and curing the topcoat composition described in the above technical solution.
  • FIG. 3 is a schematic structural diagram of the composite material provided in the embodiment of the present application, wherein 11 is a plastic substrate layer, and 12 is a topcoat layer.
  • the plastic substrate layer 11 is used as a supporting material, and has properties such as high strength and high modulus.
  • the material of the plastic substrate layer 11 includes but not limited to polycarbonate (PC), nylon (PA), glass fiber modified nylon (PA+GF), glass fiber modified polycarbonate ( PC+GF), aramid fiber modified polycarbonate (AF+PC), etc.
  • the topcoat layer 12 is compounded on the surface of the plastic substrate layer 11.
  • an outer protective layer it has good wear resistance, chemical resistance, stain resistance, etc., and on the other hand, it serves as a bonding surface, which has good adhesion. Performance, can communicate to improve the bonding performance of composite materials.
  • the topcoat layer is obtained by crosslinking and curing the above topcoat composition, which will not be repeated in this application.
  • the composite material also includes a primer layer compounded between the plastic substrate layer 11 and the topcoat layer 12, and the function of the primer layer is to improve the of bond strength.
  • the present application has no special limitation on the components and contents of the primer layer.
  • the composite material also includes an effect layer compounded between the primer layer and the topcoat layer 12, and the effect layer can be formed on the primer layer by methods such as coating, electroplating, laser engraving, chemical deposition, etc. , so that the composite material has special optical or other appearance effects, such as matte, glare and other effects.
  • the present application has no special restrictions on the components and content of the effect layer and its preparation method.
  • the effect layer can be formed by discontinuous coating technology (NCVM).
  • the composite material provided by this application can be used as a middle frame of an electronic device, a battery cover or other housing components, and is bonded to the touch screen by glue.
  • the good bonding ability of the top coat layer 12 can improve the adhesion between the touch screen and the top coat layer. connection ability, so as to avoid the touch screen falling off or the glue line falling off.
  • the present application also provides a middle frame of an electronic device, the stacked structure of which includes:
  • a topcoat layer compounded on the plastic substrate layer, the topcoat layer is formed by curing and crosslinking the topcoat composition described in the above technical solution.
  • the present application also provides a battery cover for an electronic device, the laminated structure of which includes:
  • a topcoat layer compounded on the plastic substrate layer, the topcoat layer is formed by curing and crosslinking the topcoat composition described in the above technical solution.
  • This application takes a mobile phone as an example to describe the middle frame of the electronic device, the battery cover of the electronic device, the housing of the electronic device, and the electronic device in detail, but it can be understood that the electronic device mentioned in this application can be any Functional devices such as smartphones, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, tablet computers, personal digital assistants (PAD), notebook computers, digital cameras, e-book readers , portable multimedia player, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G terminal device, etc., which are not limited in this embodiment of the present application.
  • Functional devices such as smartphones, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, tablet computers, personal digital assistants (PAD), notebook computers, digital cameras, e-book readers , portable multimedia player, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G
  • Fig. 4 is a schematic diagram of the mobile phone and its cross-sectional structure provided by the first embodiment of the present application, wherein Fig. 4a is a schematic structural diagram of the mobile phone provided by the first embodiment of the present application, and Fig. 4b is a cross-sectional view of the mobile phone shown in Fig. 4a A-A Schematic.
  • 401 is the middle frame
  • 402 is the display module
  • 403 is the touch/display module
  • 404 is the step glue.
  • the mobile phone 10 includes a middle frame 401.
  • the middle frame 401 has a bottom surface and side surfaces, forming an accommodating space inside, capable of accommodating a display module 402 and a touch/display module 403.
  • the touch/display module 403 is arranged above the display module 402.
  • the middle frame 401 is provided with grooves to form a two-stage stepped structure on the inner surface, and the touch/display module 403 is bonded to the first step of the middle frame 401 by step glue 404, so that the touch/display module 403 and the middle frame 401 form a enclosed space.
  • the middle frame 401 includes a plastic substrate layer 4011 and an ink layer 4012 arranged on the plastic substrate layer 4011.
  • the ink layer 4012 is arranged on the outer surface, the upper surface, and the bottom and side surfaces of the groove of the plastic substrate layer 4011, and may also be arranged on The inner bottom surface and the inner surface of the middle frame 401 .
  • the stacked structure of the middle frame 401 is shown in Figure 5, which is a schematic diagram of the stacked structure of the middle frame provided in the first embodiment of the present application.
  • 4011 is the plastic base forming the middle frame 4013 is a primer layer formed on the plastic substrate 4011
  • 4014 is an effect layer formed on the primer layer 4013
  • 4015 is a topcoat layer formed on the effect layer 4014, wherein the primer layer 4013, The effect layer 4014 and the top coat layer 4015 are the ink layer 4012 .
  • the plastic substrate layer 4011 is the main material for forming the middle frame, which has the characteristics of high modulus and high strength, and can be polycarbonate (PC), nylon (PA), glass fiber modified nylon (PA+GF), glass Fiber modified polycarbonate (PC+GF), aramid fiber modified polycarbonate (AF+PC), etc.
  • PC polycarbonate
  • PA nylon
  • PA+GF glass fiber modified nylon
  • PC+GF glass Fiber modified polycarbonate
  • AF+PC aramid fiber modified polycarbonate
  • the primer layer 4013 can be formed on the plastic substrate layer 4011 by coating, and can form a strong interfacial bond with the plastic substrate layer 4011 to increase the reliability of the mobile phone.
  • the present application has no special limitation on the components and contents of the primer layer 4013 .
  • the effect layer 4014 can be formed on the primer layer 4013 by coating, electroplating, laser engraving, chemical deposition and other methods to achieve the appearance of the middle frame, especially the effects required by the frame, such as matte, glare, etc.
  • the present application has no special restrictions on the components and content of the effect layer and its preparation method.
  • the effect layer can be formed by discontinuous coating technology (NCVM).
  • the topcoat layer 4015 is formed on the effect layer 4014 by coating, which can enhance the wear resistance, hardness and other properties of the middle frame, and at the same time increase the adhesive performance of the middle frame, and can be closely bonded to the step glue without other treatments , to reduce the risk of degumming and falling off of the display screen.
  • the topcoat layer 4015 is formed after curing and crosslinking of the topcoat composition described in the above-mentioned technical solution, and please do not repeat it here.
  • the laminated structure of the middle frame 401 may not be provided with a primer layer, no effect layer, or neither a primer layer nor an effect layer, which does not affect the topcoat layer of the middle frame 401 and has high reliability. properties and bonding ability.
  • the middle frame 401 is bonded to the touch/display module 403 through a step glue 404, and the step glue 404 is used as an adhesive, which may be a moisture-curing reactive polyurethane hot-melt glue (PUR glue).
  • PUR glue moisture-curing reactive polyurethane hot-melt glue
  • the middle frame can be bonded to the display module and the touch/display module through side caulking glue, as shown in Figure 6, which shows the mobile phone and its cross-sectional structure provided in the second embodiment of the present application Schematic diagram
  • FIG. 6a is a schematic structural diagram of the mobile phone provided by the second embodiment of the present application
  • FIG. 6b is a schematic structural schematic diagram of the cross-section B-B of the mobile phone shown in FIG. 6a.
  • 201 is the middle frame
  • 202 is the display module
  • 203 is the touch/display module
  • 204 is the double-sided adhesive
  • 205 is the side sealing adhesive
  • 206 is the inner caulking adhesive
  • 207 is the side caulking adhesive.
  • the mobile phone 20 includes a middle frame 201.
  • the middle frame 201 has a bottom surface and side surfaces, forming an accommodating space inside, capable of accommodating a display module 202 and a touch/display module 203.
  • the touch/display module 203 is arranged above the display module 202.
  • the bottom of the display module 202 is bonded to the inner bottom surface of the middle frame 201 by double-sided adhesive tape 204, and the sides of the display module 202 and the touch/display module 203 are bonded by side sealing glue 205, inner caulking glue 206 and side caulking
  • the glue 207 and the inner side of the middle frame 201 form a closed space.
  • the middle frame 201 includes a plastic substrate layer and an ink layer 2012 disposed on the plastic substrate layer 2011, and the ink layer 2012 is disposed on the outer surface, upper surface, inner side and inner bottom surface of the middle frame and bonded with the inner caulking glue 206
  • the part may also be arranged on the part where the inner bottom surface of the middle frame is not bonded to the inner caulking glue 206 .
  • the stacked structure of the middle frame 201 is the same as the stacked structure of the middle frame 101 described above, and will not be repeated in this application.
  • the function of the double-sided adhesive 204 is to increase the adhesion between the middle frame 201 and the display module 202 , and it may be a pressure-sensitive adhesive with a three-layer structure of acrylic glue/foam/acrylic glue.
  • the inner gap filler 206 is used to fill the gap between the bottom of the display module 202 and the inner side of the middle frame 201
  • the side sealant 205 is used to fill the side of the display module 202 to the same width as the touch/display module 203.
  • the gap glue 207 is used to fill the gap between the touch/display module 203 and the side sealant 205 and the inner side of the middle frame 201 , thereby forming a closed space.
  • the side sealing glue 205 , the inner caulking glue 206 and the side caulking glue 207 can all be PUR glue.
  • the topcoat composition described in the above technical solution has good bonding ability with the PUR glue, and can improve the bonding performance of the screen and the middle frame.
  • Fig. 7 is a schematic diagram of the mobile phone and its cross-sectional structure provided by the third embodiment of the present application, wherein Fig. 7a is a schematic structural diagram of the mobile phone provided by the third embodiment of the present application, Fig. 7b is a schematic structural diagram of the cross-section C-C of the mobile phone shown in FIG. 7a.
  • 301 is the middle frame
  • 302 is the display module
  • 303 is the touch/display module
  • 304 is the battery cover glue.
  • the mobile phone 30 includes a battery cover 301.
  • the battery cover 301 has a bottom surface and a side surface, forming an accommodating space inside, capable of accommodating a display module 302 and a touch/display module 303.
  • the touch/display module 303 is arranged above the display module 302.
  • a groove is opened on the top of the battery cover 301 so that the inner surface forms a two-level step structure.
  • the touch/display module 303 is bonded to the first step of the battery cover 301 by the battery cover glue 304, so that the touch/display module 303 is connected to the battery.
  • the cover 301 forms a closed space.
  • the battery cover 301 includes a plastic substrate layer 3011 and an ink layer 3012 arranged on the plastic substrate layer 3011, the ink layer 3012 is arranged on the outer surface, the upper surface and the bottom surface and the side of the groove of the plastic substrate layer 3011, and may also be arranged on The inner bottom surface and the inner surface of the battery cover 301 .
  • the stacked structure of the battery cover 301 is the same as the stacked structure of the middle frame 101 described above, and will not be repeated in this application.
  • the topcoat composition provided by the present application can directly replace the topcoat currently used for the ink layer, without changing the production process of the middle frame or the battery cover, and without etching the ink layer.
  • topcoat composition composition, composite material, middle frame of electronic equipment, battery cover of electronic equipment, shell of electronic equipment and electronic equipment provided by the present application will be further described below with reference to the examples.
  • the urethane acrylate is EB600
  • the acrylate monomer is a mixture of tripropylene glycol diacrylate (TPGDA) and lauryl acrylate (LA), in a ratio of 1:2
  • the photoinitiator is TPO and 184
  • the mixture the ratio is 1:1
  • the leveling agent is a mixture of acrylic polyester modified polysiloxane BYK373 and TEGO900, the ratio is 5:1
  • the solvent is acetone and n-butanol with a volume ratio of 1:1, matting powder It is fumed silica or precipitated silica.
  • the topcoat composition includes the following components:
  • Polyurethane acrylate 50 parts
  • Leveling agent 3.5 parts
  • the middle frame made of glass fiber modified nylon (PA) is sprayed sequentially to form a primer, and the NCVM layer is electroplated to form an effect layer, the above-mentioned topcoat composition is coated, and the topcoat is obtained after ultraviolet curing.
  • PA glass fiber modified nylon
  • the topcoat composition includes the following components:
  • the middle frame made of glass fiber modified nylon (PA) is sprayed sequentially to form a primer, and the NCVM layer is electroplated to form an effect layer, the above-mentioned topcoat composition is coated, and the topcoat is obtained after ultraviolet curing.
  • PA glass fiber modified nylon
  • the topcoat composition includes the following components:
  • the middle frame made of glass fiber modified nylon (PA) is sprayed sequentially to form a primer, and the NCVM layer is electroplated to form an effect layer, the above-mentioned topcoat composition is coated, and the topcoat is obtained after ultraviolet curing.
  • PA glass fiber modified nylon
  • Table 1 shows the reliability test results of the top paint compositions provided in the examples of the present application.
  • Example 1 Example 2
  • Example 3 Adhesion test PASS PASS PASS rubbing alcohol PASS PASS PASS Rubber friction PASS PASS PASS vibration friction PASS PASS PASS pencil hardness PASS PASS PASS Cosmetic resistance test PASS PASS PASS Hand Sweat Test PASS PASS PASS cryogenic storage PASS PASS PASS high temperature storage PASS PASS PASS alternating hot and humid PASS PASS PASS temperature shock PASS PASS PASS Sun radiation PASS PASS PASS boil test PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS
  • the sample to be tested is kept covered with alcohol with a concentration greater than 99.5% for 15 minutes, and then stored at laboratory temperature for 2 hours. Minimum number of samples: 3pcs.
  • Mylar Use FABER-CASTELL7017R to test rubber for wear resistance, with a force of 500g, a speed of 40cycle/min, and a test stroke of 25mm.
  • R180/530TE-30 vibration and friction testing machine is used, and the shell/cartridge is tested for 2 hours.
  • CG type Use a 7H test pencil lead, with a pressure of 750gf, and the angle between the pencil lead and the surface to be tested is 45°, draw 5 strokes at the position to be tested, each with a length of 20mm.
  • Test method 1 Use 2H test pencil lead, with 750gf pressure, the angle between the pencil lead and the surface to be tested is 45°, draw 5 strokes at the position to be tested, each stroke is 20mm long;
  • Test method 2 Use HB test pencil lead, with 1000gf pressure, the angle between the pencil lead and the surface to be tested is 45°, draw 5 strokes at the position to be tested, each stroke is 20mm long;
  • Vaseline special body lotion dry moisturizing formula
  • the temperature is 70°C
  • the temperature change rate of the incubator is 1°C/min, and it is kept for 24 hours.
  • the temperature is 25°C-55°C, the humidity is 95% ⁇ 2%, each cycle is 24 hours, and the test is 72 hours (3 cycles); at 25°C, 75% RH is kept for 2 hours.
  • One test cycle is 24 hours. Specifically, under dry heat of 40°C, the solar radiation intensity is 1120W/m2, keep it for 20 hours, and then turn off the solar radiation source for 4 hours.
  • One test cycle is 3 cycles.
  • Purified water at 80°C ⁇ 2°C boil the sample for 30 minutes; place it at room temperature for 2 hours before testing the adhesion.
  • topcoat compositions provided in Examples 1 to 3 are tested for bond strength, and the shear strength is tested according to the method provided in GB/T-7124-2008, the specific method is as follows:
  • Test apparatus as shown in Figure 8, Fig. 8 is the test apparatus that the embodiment of the present application provides, comprises the fixture 91 that is used to fix the first polycarbonate (PC) sheet 92, and the first PC sheet 92 is away from one end coating of fixture 91 There is the cured topcoat 93 of Examples 1-3; the second PC sheet 94, one end of the second PC sheet 94 is bonded with the topcoat 93 on the first PC sheet 2 by PUR glue 95, and the other end is connected by a flexible connection device 96 links to each other with force application device 97, and flexible connection device 96 can guarantee the coaxiality of force, and force application device 97 applies pulling force to second PC sheet 94;
  • PC polycarbonate
  • Table 2 shows the test conditions and results of the bonding strength of the topcoat composition provided in the examples of the present application.
  • Comparative Example 1 is a commercially available Miramar topcoat.

Abstract

本申请提供了一种面漆组合物包括：30～60质量份的成膜树脂，所述成膜树脂包括丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；5～20质量份的丙烯酸酯单体；1～10质量份的光引发剂；0.5～10质量份的流平剂；0～20质量份的消光粉；20～50质量份的溶剂。本申请还提供了复合材料、电子设备中框、电子设备电池盖、电子设备壳体和电子设备。本申请提供的面漆组合物可在紫外线光照的作用下交联固化，形成具有良好的可靠性和粘结性能的面漆，作为电子设备中框和电子设备电池盖的面漆层使用，与胶水具有良好的粘接性能，从而防止电子设备屏幕脱落。实验结果表明，本申请提供的面漆与PUR胶之间的剪切强度可达20MPa以上。

Description

面漆组合物、复合材料、电子设备中框、电子设备壳体和电子设备
本申请要求于2021年12月31日提交中国国家知识产权局、申请号为202111681939.5、发明名称为“面漆组合物、复合材料、电子设备中框、电子设备壳体和电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备技术领域，尤其涉及一种面漆组合物、复合材料、电子设备中框、电子设备壳体和电子设备。
背景技术
目前，电子设备屏幕通过胶水粘接在电子设备壳体上，例如通过电池盖胶直接将屏幕粘接在电池盖上，或者通过填缝胶将屏幕粘接在电子设备中框上。该方案不仅要求触摸屏与胶水具有良好的粘接性能，也要求电子设备中框或电池盖与胶水也具有良好的粘接性能，以防止整机触摸屏脱落和胶线脱落。
塑料作为制备电子设备中框和电池盖的材质之一，能够使得电子设备更加轻薄。目前一般采用喷涂工艺对塑料中框或电池盖进行外观装饰，在塑料基材上形成包括底涂层、效果层和面漆层的油墨层，其中，面漆层作为最外层的保护涂层，交联度较高、具有不可重涂性，导致塑料中框或电池盖的面漆层与胶水之间的粘结性能较差。
发明内容
本申请提供了一种面漆组合物、复合材料、电子设备中框、电子设备壳体及电子设备，解决了电子设备中塑料中框或电池盖与胶水之间粘结性能差的技术问题。
为了实现上述目的，本申请提供了以下技术方案：
一种面漆组合物，包括：
30～60质量份的成膜树脂，所述成膜树脂包括丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
5～20质量份的丙烯酸酯单体；
1～10质量份的光引发剂；
0.5～10质量份的流平剂；
0～20质量份的消光粉；
20～50质量份的溶剂。
本申请提供的面漆组合物以丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种作为成膜物质，配合丙烯酸单体在紫外线光照的作用下交联固化，形成具有良好的可靠性和粘结性能的面漆，可以作为电子设备中框和电子设备电池盖的面漆层使用，无需刻蚀掉面漆层即可与胶水具有良好的粘接性能，从而防止电子设备屏幕脱落。实验结果表明，本申请提供的面漆与PUR胶之间的剪切强度可达20MPa以上。
在本申请的一个典型实施例中，所述面漆组合物包括：
40～55质量份的成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
8～18质量份的丙烯酸酯单体；
1.5～8质量份的光引发剂；
0.8～8质量份的流平剂；
0～20质量份的消光粉；
25～40质量份的溶剂。
其中，所述成膜树脂为聚氨酯丙烯酸酯EB600；所述丙烯酸酯单体为质量比为1:2的二缩三丙二醇二丙烯酸酯与丙烯酸月桂酯；所述光引发剂为质量比为1:1的TPO与184；所述流平剂为质量比为5:1的BYK373与TEGO900；所述溶剂为体积比为1:1的丙酮和正丁醇；所述消光粉为气相二氧化硅或者沉淀法二氧化硅。
上述实施例提供的面漆组合物，具有优良的剪切强度，可以直接代替目前油墨层采用的面漆，无需改变中框或电池盖的生产工艺，也无需对油墨层进行刻蚀，即可将台阶胶与中框或电池盖粘接，防止整机触摸屏脱落和胶线脱落，提高电子设备的可靠性。
另一方面，本申请实施例还提供了一种复合材料，包括：
塑料基材层；
复合在所述塑料基材层上的面漆层，所述面漆层由上述技术方案所述的面漆组合物交联固化得到。
上述复合材料可制成电子设备中框或电子设备电池盖，面漆层作为中框或电池盖的最外层，无需刻蚀，即可通过胶水与屏幕相粘接，防止整机触摸屏脱落和胶线脱落，提高电子设备的使用寿命。同时，面漆层作为中框或电池盖的最外层，具有良好的可靠性。
应当理解的是，本申请中对技术特征、技术方案、有益效果或类似语言的描述并不是暗示在任意的单个实施例中可以实现所有的特点和优点。相反，可以理解的是对于特征或有益效果的描述意味着在至少一个实施例中包括特定的技术特征、技术方案或有益效果。因此，本说明书中对于技术特征、技术方案或有益效果的描述并不一定是指相同的实施例。进而，还可以任何适当的方式组合本实施例中所描述的技术特征、技术方案和有益效果。本领域技术人员将会理解，无需特定实施例的一个或多个特定的技术特征、技术方案或有益效果即可实现实施例。在其他实施例中，还可在没有体现所有实施例的特定实施例中识别出额外的技术特征和有益效果。
附图说明
为了更清楚地说明本申请实施例的技术方法，下面将对实施例中所需使用的附图作以简单地介绍。
图1为手机的一个典型结构示意图；
图2为图1所示手机A-A面的结构示意图；
图3为本申请实施例提供的复合材料的结构示意图；
图4为本申请第一实施例提供的手机及其截面结构示意图，图4a为本申请第一实施例 提供的手机结构示意图，图4b为图4a所示手机截面A-A的结构示意图；
图5为本申请第一实施例提供的中框的叠层结构示意图；
图6为本申请第二实施例提供的手机及其截面结构示意图，图6a为本申请第二实施例提供的手机结构示意图，图6b为图6a所示手机截面B-B的结构示意图；
图7为本申请第三实施例提供的手机及其截面结构示意图，其中，图7a为本申请第三实施例提供的手机结构示意图，图7b为图7a所示手机截面C-C的结构示意图；
图8为本申请实施例提供的测试装置。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。还应当理解，在本申请实施例中，“一个或多个”是指一个、两个或两个以上；“和/或”，描述关联对象的关联关系，表示可以存在三种关系；例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
本申请实施例涉及的多个，是指大于或等于两个。需要说明的是，在本申请实施例的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
本申请实施例中涉及的上、下、内、外等方位词语是相对而言的，本领域技术人员可以理解的是，当变换方向时，方位也会随之发生改变。
本申请实施例中涉及的可靠性，包括附着力、RCA纸带耐磨、酒精摩擦、橡皮摩擦、振动摩擦、铅笔硬度、抗脏污、牛顿笔、显微维氏硬度、耐化妆品、耐手汗、低温存储、高温存储、交变湿热、温度冲击、太阳辐射、盐雾、水煮等测试。
本申请实施例中涉及的粘接性能，指的是粘结面之间的粘接性能，本申请中采用剪切强度表示。
本申请以手机为例进行说明，参见图1和图2，图1为手机的一个典型结构示意图，图2为图1所示手机A-A面的结构示意图，其中，101为中框，102为显示模组，103为触摸/显示模组，104为台阶胶。
手机10包括中框101，中框101具有底面和侧面，使其内部形成容纳空间，能够容纳显示模组102和触摸/显示模组103，触摸/显示模组103设置在显示模组102上方。中框101 上方开设有槽使其内侧面形成两级台阶结构，触摸/显示模组103通过台阶胶104粘接在中框101的第一级台阶上，使触摸/显示模组103与中框101形成封闭空间。
中框401的叠层结构包括塑料基材层1011和油墨层1012，油墨层1012一般为叠层结构，包括依次叠层设置的：与塑料基材层1011相接触的底漆层、效果层和面漆层，其中，面漆层作为中框401的最外层具有交联度高、不可重涂性等特点，为了提高台阶胶104和塑料基材层1011之间的粘合力，一般将两者相接触部分的油墨层刻蚀掉，但是塑料基材层具有较低的表面亲和性，导致与台阶胶的粘接性能差。
基于此，本申请实施例提供了一种面漆组合物，该面漆组合物除了能够满足中框最外层所要求的耐磨、耐污等性能之外，还具有一定的粘结力，无需刻蚀掉台阶胶104部位的油墨层，即可使得台阶胶104与油墨层1012之间具有良好的粘接性能，防止电子设备屏幕脱落。
本申请提供的面漆组合物包括：
30～60质量份的成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
5～20质量份的丙烯酸酯单体；
1～10质量份的光引发剂；
0.5～10质量份的流平剂；
0～20质量份的消光粉；
20～50质量份的溶剂。
本申请提供的面漆组合物包括成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯中的一种或多种。丙烯酸树脂和聚氨酯丙烯酸酯作为面漆组合物中主要的成膜物质，与丙烯酸单体固化交联后使得到的面漆不仅具有良好的耐磨、耐污、耐化妆品等性能，而且具有良好的粘结性能。在一个实施例中，所述丙烯酸树脂选自四官能改性丙烯酸树脂中的至少一种，所述四官能改性丙烯酸树脂包括但不限于EB810、长兴6261等。在一个实施例中，所述聚氨酯丙烯酸酯选自六官能脂肪族聚氨酯丙烯酸酯中的至少一种，所述六官能脂肪族聚氨酯丙烯酸酯包括但不限于型号为ST8106、EB600、EB145、EB524、CN966J5等。在一个实施例中，所述成膜树脂的含量为40～55质量份。在一个实施例中，所述成膜树脂的含量为45～50质量份。
本申请提供的面漆组合物包括丙烯酸酯单体，丙烯酸酯单体的作用在于与丙烯酸树脂或聚氨酯丙烯酸酯固化交联，提高得到的面漆的性能。在一个实施例中，所述丙烯酸酯单体选自丙烯酸酯类单体或改性丙烯酸酯类单体中的一种或多种，丙烯酸酯单体包括但不限于二缩三丙二醇二丙烯酸酯(TPGDA)、1,6-己二醇二丙烯酸酯(HDDA)、三羟甲基丙烷三丙烯酸酯(TMP-TA)、丙烯酸羟丙酯、丙烯酸羟乙酯、丙烯酸月桂酯(LA)等。在一个实施例中，所述丙烯酸单体为二缩三丙二醇二丙烯酸酯和丙烯酸月桂酯的混合物。在一个实施例中，所述二缩三丙二醇二丙烯酸酯和丙烯酸月桂酯的质量比为1～2:1～3。在一个实施例中，所述二缩三丙二醇二丙烯酸酯和丙烯酸月桂酯的质量比为1:2。在一个实施例中，所述丙烯酸酯单体的含量为8～18质量份。在一个实施例中，所述丙烯酸酯单体的含量为10～15质量份。
本申请提供的面漆组合物包括光引发剂，光引发剂的作用在于在紫外光(UV)的作用下引发成膜树脂和丙烯酸单体固化交联，所述光引发剂包括但不限于Darocur 1173、TPO、Irgacure 184、Irgacure 369等。在一个实施例中，所述光引发剂为Darocur 1173、TPO、Irgacure 184或Irgacure 369中的一种或多种。在一个实施例中，所述光引发剂为TPO和Irgacure 184的混合物。在一个实施例中，所述TPO和Irgacure 184的质量比为1～2:1～2。在一个实施例中，所述TPO和Irgacure 184的质量比为1:1。在一个实施例，所述光引发剂的含量为1.5～8质量份。在一个实施例中，所述光引发剂的含量为2～4质量份。
本申请提供的面漆组合物包括流平剂，所述流平剂的作用在于使得到的面漆涂层平整、光滑、均匀。在一个实施例中，所述流平剂至少包括有机硅流平剂。在一个实施例中，所述流平剂包括有机硅流平剂和聚丙烯酸酯流平剂，其中有机硅流平剂含量不小于2％。在一个实施例中，所述有机硅流平剂选自TEGO900、TEGO920或BYK373。在一个实施例中，所述流平剂为BYK373与TEGO900的混合物。在一个实施例中，所述BYK373与TEGO900的质量比为3～8:1。在一个实施例中，所述BYK373与TEGO900的质量比为5:1。在一个实施例中，所述流平剂的用量为0.8～8质量份。在一个实施例中，所述流平剂的用量为1～5质量份。
本申请提供的面漆组合物为溶剂型面漆组合物，其包括溶剂，溶剂的作用在于作为介质溶解各组分并使各组分在紫外光照射和光引发剂的作用下发生固化交联。在一个实施例中，所述溶剂为混合溶剂，选自丙酮、正丁醇、乙二醇丁二烯、乙酸乙酯中的任意两种或多种。在一个实施例中，所述溶剂为丙酮和正丁醇。在一个实施例中，所述溶剂为丙酮和乙二醇丁二烯。在一个实施例中，所述溶剂为丙酮和乙酸乙酯。在一个实施例中，所述溶剂为正丁醇和乙二醇丁二烯。在一个实施例中，所述溶剂为正丁醇和乙酸乙酯。在一个实施例中，所述溶剂为乙二醇丁二烯和乙酸乙酯。在一个实施例中，所述溶剂为丙酮、正丁醇和乙二醇丁二烯。在一个实施例中，所述溶剂为丙酮、正丁醇和乙酸乙酯。在一个实施例中，所述溶剂为正丁醇、乙二醇丁二烯和乙酸乙酯。在一个实施例中，所述溶剂为丙酮、正丁醇、乙二醇丁二烯和乙酸乙酯。本申请对溶剂中各组分的用量没有特殊限制，两组分的溶剂中，两组分的质量比为1～3:1～3；三组分的溶剂中，三组分的质量比为1～3:1～3：1～3；四组分的溶剂中，四组分的质量比为1～3：1～3:1～3：1～3。在一个实施例中，溶剂的用量为25～40质量份。
本申请提供的面漆组合物还可以包括消光剂，固化后形成的面漆涂层呈现哑光效果。在一个实施例中，所述消光剂为二氧化硅消光剂，例如有机改性的化学沉淀法二氧化硅或气相法二氧化硅消光剂，不可采用消光蜡浆。在一个实施例中，所述消光剂的粒径为3～12微米。在一个实施例中，消光剂的用量为5～15质量份。
在一个实施例中，本申请提供的面漆组合物包括：
40～55质量份的成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
8～18质量份的丙烯酸酯单体；
1.5～8质量份的光引发剂；
0.8～8质量份的流平剂；
0～20质量份的消光粉；
25～40质量份的溶剂。
在一个实施例中，本申请提供的面漆组合物包括：
45～50质量份的成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
10～15质量份的丙烯酸酯单体；
2～4质量份的光引发剂；
1～5质量份的流平剂；
5～15质量份的消光粉；
25～40质量份的溶剂。
本申请提供的面漆组合物在紫外线光照的作用下可交联固化，形成面漆，具有良好的可靠性和粘结性能，可以作为电子设备中框和电子设备电池盖的面漆层使用。实验结果表明，本申请提供的面漆与PUR胶之间的剪切强度可达20MPa以上。
本申请还提供了一种复合材料，包括：
塑料基材层；
复合在所述塑料基材层上的面漆层，所述面漆层由上述技术方案所述的面漆组合物交联固化得到。
参见图3，图3为本申请实施例提供的复合材料的结构示意图，其中，11为塑料基材层，12为面漆层。
在所述复合材料中，塑料基材层11作为支撑材料，具有高强度、高模量等性能。在一个实施例中，塑料基材层11的材质包括但不限于聚碳酸酯(PC)、尼龙(PA)、玻璃纤维改性的尼龙(PA+GF)、玻璃纤维改性的聚碳酸酯(PC+GF)、芳纶纤维改性的聚碳酸酯(AF+PC)等。
面漆层12复合在塑料基材层11表面，一方面作为外层保护层，具有良好的耐磨性、耐化学品性、耐污性等，一方面作为粘结面，具有良好的粘结性能，能沟通提高复合材料的粘结性能。所述面漆层由上述面漆组合物交联固化得到，本申请在此不再赘述。
在其他实施例中，所述复合材料还包括复合在塑料基材层11和面漆层12之间的底漆层，底漆层的作用在于提高塑料基材层11和面漆层12之间的粘结强度。本申请对底漆层的组分及其含量没有特殊限制。
在其他实施例中，所述复合材料还包括复合在底漆层和面漆层12之间的效果层，效果层可以通过涂布、电镀、镭雕、化学沉积等方法形成在底漆层上，使复合材料具备特殊的光学或者其他外观效果，例如哑光、炫光等效果。本申请对效果层的组分及其含量及其制备方法均无特殊限制，例如，可以采用不连续镀膜技术(NCVM)形成效果层。
本申请提供的复合材料可以作为电子设备中框、电池盖或其他壳体组件使用，通过胶与触摸屏相粘接，面漆层12良好的粘结能力能够提高触摸屏和面漆层之间的粘接能力，从而避免触摸屏脱落或胶线脱落。
基于此，本申请还提供了一种电子设备中框，其叠层结构包括：
塑料基材层；
复合在所述塑料基材层上的面漆层，所述面漆层由上述技术方案所述的面漆组合物固化交联后形成。
本申请还提供了一种电子设备电池盖，其叠层结构包括：
塑料基材层；
复合在所述塑料基材层上的面漆层，所述面漆层由上述技术方案所述的面漆组合物固化交联后形成。
本申请以手机为例对所述电子设备中框、电子设备电池盖、电子设备壳体以及电子设备进行详细说明，但可以理解的是，本申请提及的电子设备可以是任何具备通信和存储功能的设备，例如智能手机、蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、平板电脑、个人数字处理(Personal Digital Assistant,PAD)、笔记本电脑、数码相机、电子书籍阅读器、便携多媒体播放器、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其他处理设备、车载设备、可穿戴设备、5G终端设备等，本申请实施例对此并不限定。
参见图4，图4为本申请第一实施例提供的手机及其截面结构示意图，其中，图4a为本申请第一实施例提供的手机结构示意图，图4b为图4a所示手机截面A-A的结构示意图。其中，401为中框，402为显示模组，403为触摸/显示模组，404为台阶胶。
手机10包括中框401，中框401具有底面和侧面，使其内部形成容纳空间，能够容纳显示模组402和触摸/显示模组403，触摸/显示模组403设置在显示模组402上方。中框401开设有槽使内侧面形成两级台阶结构，触摸/显示模组403通过台阶胶404粘接在中框401的第一级台阶上，使触摸/显示模组403与中框401形成封闭空间。
中框401包括塑料基材层4011和设置在塑料基材层4011上的油墨层4012，油墨层4012设置在塑料基材层4011的外表面、上表面和槽的底面和侧面，也可以设置在中框401的内底面和内侧面。
在本实施例中，中框401的叠层结构如图5所示，图5为本申请第一实施例提供的中框的叠层结构示意图，图5中，4011是形成中框的塑料基材层，4013是形成在塑料基材4011上的底漆层，4014是形成在底漆层4013上的效果层，4015是形成在效果层4014上的面漆层，其中，底漆层4013、效果层4014和面漆层4015即为油墨层4012。
塑料基材层4011是形成中框的主要材料，具有高模量、高强度等特点，可以是聚碳酸酯(PC)、尼龙(PA)、玻璃纤维改性的尼龙(PA+GF)、玻璃纤维改性的聚碳酸酯(PC+GF)、芳纶纤维改性的聚碳酸酯(AF+PC)等。
底漆层4013可以通过涂布的方式形成在塑料基材层4011上，可以与塑料基材层4011形成强界面结合，增加手机的可靠性。本申请对底漆层4013的组分及其含量没有特殊限制。
效果层4014可以通过涂布、电镀、镭雕、化学沉积等方法形成在底漆层4013上，实现中框外观，尤其是边框所要求的效果，例如哑光、炫光等。本申请对效果层的组分及其含量及其制备方法均无特殊限制，例如，可以采用不连续镀膜技术(NCVM)形成效果层。
面漆层4015通过涂布的方式形成在效果层4014上，能够增强中框的耐磨性、硬度等性能，同时增加中框的粘接性能，无需经过其他处理即可与台阶胶紧密粘接，降低显示屏脱胶脱落的风险。面漆层4015由上述技术方案所述的面漆组合物固化交联后形成，本身请 在此不再赘述。
在其他实施例中，中框401的叠层结构可以不设置底漆层、不设置效果层或者底漆层和效果层均不设置，并不影响中框401的面漆层同时具有高的可靠性和粘接能力。
本实施例中，中框401通过台阶胶404与触摸/显示模组403相粘接，台阶胶404作为粘合剂，可以为湿气固化反应型聚氨酯热熔胶(PUR胶)。上述技术方案所述的面漆组合物与PUR胶之间具有良好的粘接能力，能够提高屏幕和中框的粘结性能。
在其他实施例中，中框可以通过侧填缝胶与显示模组和触摸/显示模组相粘接，如图6所示，图6为本申请第二实施例提供的手机及其截面结构示意图，图6a为本申请第二实施例提供的手机结构示意图，图6b为图6a所示手机截面B-B的结构示意图。其中，201为中框，202为显示模组，203为触摸/显示模组，204为双面胶，205为侧封胶、206为内填缝胶，207为侧填缝胶。
手机20包括中框201，中框201具有底面和侧面，使其内部形成容纳空间，能够容纳显示模组202和触摸/显示模组203，触摸/显示模组203设置在显示模组202上方。显示模组202的底部通过双面胶204粘接在中框201内底面，显示模组202的侧面和触摸/显示模组203的侧面通过侧封胶205、内填缝胶206和侧填缝胶207与中框201的内侧面，形成封闭空间。
中框201包括塑料基材层和设置在塑料基材层2011上的油墨层2012，油墨层2012设置在中框的外表面、上表面、内侧面以及内底面与内填缝胶206相粘接的部分，也可以设置在中框内底面与内填缝胶206不相粘接的部分。中框201的叠层结构与上文所述的中框101的叠层结构相同，本申请在此不再赘述。
在第二实施例中，双面胶204的作用在于增加中框201和显示模组202的粘接能力，其可以为丙烯酸胶/泡棉/丙烯酸胶三层结构的压敏胶。
内填缝胶206用于填充显示模组202底部与中框201内侧面之间的缝隙，侧封胶205用于将显示模组202侧面填充至与触摸/显示模组203同宽，侧填缝胶207用于填充触摸/显示模组203和侧封胶205与中框201内侧面的缝隙，从而形成封闭空间。在本实施例中，侧封胶205、内填缝胶206和侧填缝胶207均可以为PUR胶。上述技术方案所述的面漆组合物与PUR胶之间具有良好的粘接能力，能够提高屏幕和中框的粘结性能。
本申请还提供了一种电池盖，参见图7，图7为本申请第三实施例提供的手机及其截面结构示意图，其中，图7a为本申请第三实施例提供的手机结构示意图，图7b为图7a所示手机截面C-C的结构示意图。其中，301为中框，302为显示模组，303为触摸/显示模组，304为电池盖胶。
手机30包括电池盖301，电池盖301具有底面和侧面，使其内部形成容纳空间，能够容纳显示模组302和触摸/显示模组303，触摸/显示模组303设置在显示模组302上方。电池盖301上方开设有槽使其内侧面形成两级台阶结构，触摸/显示模组303通过电池盖胶304粘接在电池盖301的第一级台阶上，使触摸/显示模组303与电池盖301形成封闭空间。
电池盖301包括塑料基材层3011和设置在塑料基材层3011上的油墨层3012，油墨层3012设置在塑料基材层3011的外表面、上表面和槽的底面和侧面，也可以设置在电池盖301的内底面和内侧面。电池盖301的叠层结构与上文所述的中框101的叠层结构相同， 本申请在此不再赘述。
本申请提供的面漆组合物可以直接代替目前油墨层采用的面漆，无需改变中框或电池盖的生产工艺，也无需对油墨层进行刻蚀。
以下将结合实施例对本申请提供的面漆组合物、复合材料、电子设备中框、电子设备电池盖、电子设备壳体及电子设备进行进一步说明。
以下各实施例中，聚氨酯丙烯酸酯为EB600，丙烯酸酯单体为二缩三丙二醇二丙烯酸酯(TPGDA)与丙烯酸月桂酯(LA)的混合物，比例为1:2；光引发剂为TPO与184的混合物，比例为1:1；流平剂为丙烯酸聚酯改性聚硅氧烷BYK373与TEGO900的混合物，比例为5:1，溶剂为体积比为1:1的丙酮和正丁醇，消光粉为气相二氧化硅或者沉淀法二氧化硅。
实施例1
面漆组合物包括以下组分：
聚氨酯丙烯酸酯：50份；
丙烯酸酯单体：10份；
光引发剂：3份；
流平剂：3.5份；
溶剂：40份。
在玻璃纤维改性的尼龙(PA)制备的中框上依次喷涂形成底漆、电镀NCVM层形成效果层后，涂布上述面漆组合物，紫外光固化后得到面漆。
实施例2
面漆组合物包括以下组分：
聚氨酯丙烯酸酯：45份；
丙烯酸酯单体：15份；
光引发剂：2.5份；
流平剂：5份；
消光粉：10份；
溶剂：30份。
在玻璃纤维改性的尼龙(PA)制备的中框上依次喷涂形成底漆、电镀NCVM层形成效果层后，涂布上述面漆组合物，紫外光固化后得到面漆。
实施例3
面漆组合物包括以下组分：
聚氨酯丙烯酸酯：45份；
丙烯酸酯单体：15份；
光引发剂：3份；
流平剂：5份；
溶剂：40份。
在玻璃纤维改性的尼龙(PA)制备的中框上依次喷涂形成底漆、电镀NCVM层形成效果层后，涂布上述面漆组合物，紫外光固化后得到面漆。
实施例4
对实施例1～3提供的面漆组合物进行可靠性测试，结果如表1所示，表1为本申请实施例提供的面漆组合物的可靠性测试结果。
表1本申请实施例提供的面漆组合物的可靠性测试结果
测试项 实施例1 实施例2 实施例3
附着力测试 PASS PASS PASS
酒精摩擦 PASS PASS PASS
橡皮摩擦 PASS PASS PASS
振动摩擦 PASS PASS PASS
铅笔硬度 PASS PASS PASS
耐化妆品测试 PASS PASS PASS
耐手汗测试 PASS PASS PASS
低温存储 PASS PASS PASS
高温存储 PASS PASS PASS
交变湿热 PASS PASS PASS
温度冲击 PASS PASS PASS
太阳辐射 PASS PASS PASS
水煮测试 PASS PASS PASS
表1中，各项性能测试方法如下：
(1)附着力测试
在测试样本表面划5×5个2mm×2mm小网格，每一条划线应深及涂层的底层；用粘附力(10±1)N/25mm的胶带牢牢粘住被测试小网格，并用指甲挤压胶带(注意指甲不能破坏胶带)，赶走胶带与涂层之间的气泡，以加大胶带与被测区域的接触面积及力度；静置(90±30)s后，用手抓住胶带一端，在反向60°方向，0.5s～1s内扯下胶纸，试验1次,试验后再用5倍放大镜检查油漆涂层的脱落情况。
(2)酒精摩擦
将待测样品保持覆盖浓度大于99.5％的酒精，保持15min，然后在实验室温度下保存2小时。最小样品数：3pcs。
(3)橡皮摩擦
Glass：用NO.74/75215的橡皮擦，用500g的力，速度40cycle/min，测试行程25mm；
Mylar：用FABER-CASTELL7017R耐磨测试橡皮，用500g的力，速度40cycle/min，测试行程25mm。
(4)振动摩擦
采用R180/530TE-30振动摩擦试验机，壳体/卡托单体测试2小时。
(5)铅笔硬度
CG类：用7H的测试铅笔芯，以750gf压力，铅笔芯与待测表面的夹角45°，在待测位置划5笔，每笔长20mm。
Mylar涂层类：测试方法一：用2H的测试铅笔芯，以750gf压力，铅笔芯与待测表面的夹角45°，在待测位置划5笔，每笔长20mm；测试方法二：用HB的测试铅笔芯，以1000gf压力，铅笔芯与待测表面的夹角45°，在待测位置划5笔，每笔长20mm；
(6)耐化妆品测试
将凡士林特效润肤露(干燥滋润配方)涂在待测样品表面上，进行交变湿热2个循环(48h)。
(7)耐手汗测试
用汗液浸泡后的无尘布轻擦样品表面2min，常温环境下放置2h。
(8)低温存储
温度-40℃，温箱温度变化速率：1℃/min，保持24小时。
(9)高温存储
温度70℃，温箱温度变化速率：1℃/min，保持24小时。
(10)交变湿热
温度25℃～55℃，湿度95％±2％，每个周期24小时，共测试72小时(3个循环)；在25℃，75％RH保持2小时。
(11)温度冲击
-30℃/65℃，每温度点保持1h后，3min内快速切换温度，共24个循环48hrs。环境测试完后成，涂层表面需要进行附着力测试。
(12)太阳辐射
进行1个循环为24小时的测试，具体为在干热40℃下，太阳辐射强度为1120W/㎡，保持20小时，再关闭太阳辐射源4小时，一个测试周期为3个循环。
(13)水煮测试
80℃±2℃的纯净水，将样品水煮30min；常温放置2小时后进行附着力测试。
由表1可知，本申请提供的面漆组合物具有较高的可靠性。
对实施例1～3提供的面漆组合物进行粘接强度测试，按照GB/T-7124-2008提供的方法测试剪切强度，具体方法如下：
测试装置如图8所示，图8为本申请实施例提供的测试装置，包括用于固定第一聚碳酸酯(PC)片92的夹具91，第一PC片92远离夹具91的一端涂布有实施例1～3固化后的面漆93；第二PC片94，第二PC片94的一端通过PUR胶95与第一PC片2上的面漆93粘接，另一端通过柔性连接装置96与施力装置97相连，柔性连接装置96能够保证力的同轴性，施力装置97对第二PC片94施加拉力；
参见表2，表2为本申请实施例提供的面漆组合物的粘接强度测试条件及结果。
表2本申请实施例提供的面漆组合物的粘接强度测试条件及结果
Figure PCTCN2022117290-appb-000001
其中，对比例1为市购的美丽华面漆。
由表2可知，本申请提供的面漆组合物与PUR胶之间具有良好的粘接强度。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。。

Claims (22)

  1. 一种面漆组合物，包括：
    30～60质量份的成膜树脂，所述成膜树脂包括丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
    5～20质量份的丙烯酸酯单体；
    1～10质量份的光引发剂；
    0.5～10质量份的流平剂；
    0～20质量份的消光粉；
    20～50质量份的溶剂。
  2. 根据权利要求1所述的面漆组合物，其特征在于，所述成膜树脂包括四官能改性丙烯酸树脂或六官能脂肪族聚氨酯丙烯酸酯中的一种或多种。
  3. 根据权利要求1所述的面漆组合物，其特征在于，所述丙烯酸单体包括二缩三丙二醇二丙烯酸酯、1,6-己二醇二丙烯酸酯、三羟甲基丙烷三丙烯酸酯、丙烯酸羟丙酯、丙烯酸羟乙酯和丙烯酸月桂酯中的一种或多种。
  4. 根据权利要求1所述的面漆组合物，其特征在于，所述流平剂包括有机硅流平剂。
  5. 根据权利要求1所述的面漆组合物，其特征在于，所述溶剂包括丙酮、正丁醇、乙二醇丁二烯、乙酸乙酯中的任意两种或多种。
  6. 根据权利要求1～5任意一项所述的面漆组合物，其特征在于，包括：
    40～55质量份的成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
    8～18质量份的丙烯酸酯单体；
    1.5～8质量份的光引发剂；
    0.8～8质量份的流平剂；
    0～20质量份的消光粉；
    25～40质量份的溶剂。
  7. 根据权利要求6所述的面漆组合物，其特征在于，包括：
    45～50质量份的成膜树脂，所述成膜树脂选自丙烯酸树脂和聚氨酯丙烯酸酯树脂中的一种或多种；
    10～15质量份的丙烯酸酯单体；
    2～4质量份的光引发剂；
    1～5质量份的流平剂；
    5～15质量份的消光粉；
    25～40质量份的溶剂。
  8. 根据权利要求6或7所述的面漆组合物，其特征在于，所述成膜树脂为聚氨酯丙烯酸酯EB600；
    所述丙烯酸酯单体为质量比为1:2的二缩三丙二醇二丙烯酸酯与丙烯酸月桂酯；
    所述光引发剂为质量比为1:1的TPO与184；
    所述流平剂为质量比为5:1的BYK373与TEGO900；
    所述溶剂为体积比为1:1的丙酮和正丁醇；
    所述消光粉为气相二氧化硅或者沉淀法二氧化硅。
  9. 一种复合材料，包括：
    塑料基材层；
    复合在所述塑料基材层上的面漆层，所述面漆层由权利要求1～8任意一项所述的面漆组合物交联固化得到。
  10. 根据权利要求9所述的复合材料，其特征在于，所述塑料基材层为聚碳酸酯层、尼龙层、玻璃纤维改性的尼龙层、玻璃纤维改性的聚碳酸酯层或芳纶纤维改性的聚碳酸酯层。
  11. 根据权利要求9或10所述的复合材料，其特征在于，还包括：
    复合在塑料基材层和面漆层之间的底漆层。
  12. 根据权利要求11所述的复合材料，其特征在于，还包括：
    复合在底漆层和面漆层之间的效果层。
  13. 根据权利要求9所述的复合材料，其特征在于，所述面漆层和塑料基材层之间的剪切强度为15MPa以上。
  14. 根据权利要求13所述的复合材料，其特征在于，所述面漆层和塑料基材层之间的剪切强度为19MPa以上。
  15. 一种电子设备中框，由权利要求9～14任意一项所述的复合材料制成。
  16. 一种电子设备电池盖，由权利要求9～14任意一项所述的复合材料制成。
  17. 一种电子设备壳体，包括权利要求15所述的中框或权利要求16所述的电池盖。
  18. 一种电子设备，包括权利要求17所述的壳体。
  19. 根据权利要求18所述的电子设备，其特征在于，包括：
    权利要求15所述的中框；
    通过台阶胶与所述中框的面漆层相粘接的触摸/显示模组。
  20. 根据权利要求18所述的电子设备，其特征在于，包括：
    权利要求16所述的电池盖；
    通过台阶胶与所述电池盖的面漆层相粘接的触摸/显示模组。
  21. 根据权利要求18所述的电子设备，其特征在于，包括：
    权利要求15所述的中框；
    通过侧封胶、内填缝胶和侧填缝胶与所述中框的面漆层相粘接的触摸/显示模组。
  22. 根据权利要求18所述的电子设备，其特征在于，包括：
    权利要求16所述的电池盖；
    通过侧封胶、内填缝胶和侧填缝胶与所述电池盖的面漆层相粘接的触摸/显示模组。
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