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CN120818307A - Protective coating and preparation method thereof, touch panel, display and vehicle - Google Patents

Protective coating and preparation method thereof, touch panel, display and vehicle

Info

Publication number
CN120818307A
CN120818307A CN202510980322.5A CN202510980322A CN120818307A CN 120818307 A CN120818307 A CN 120818307A CN 202510980322 A CN202510980322 A CN 202510980322A CN 120818307 A CN120818307 A CN 120818307A
Authority
CN
China
Prior art keywords
coating
protective coating
substrate
protective
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202510980322.5A
Other languages
Chinese (zh)
Inventor
张德强
魏婉楚
李波
王伟健
李书鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Automobile Group Co Ltd
Original Assignee
Guangzhou Automobile Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Automobile Group Co Ltd filed Critical Guangzhou Automobile Group Co Ltd
Priority to CN202510980322.5A priority Critical patent/CN120818307A/en
Publication of CN120818307A publication Critical patent/CN120818307A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
    • B05D1/005—Spin coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • 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
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • 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
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/10—Block or graft copolymers containing polysiloxane sequences
    • C09D183/12—Block or graft copolymers containing polysiloxane sequences containing polyether sequences
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/12—Organic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/16—Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Transportation (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Combustion & Propulsion (AREA)
  • Paints Or Removers (AREA)

Abstract

本申请实施例提供一种防护涂层及其制备方法、触控面板、显示器和车辆，所述防护涂层包括：第一涂层和第二涂层。第一涂层包括改性聚硅氧烷聚合物且用于与基体连接，改性聚硅氧烷聚合物包括粘附树脂组分以及抗静电树脂组分；第二涂层设于第一涂层的远离基体的一侧，第二涂层包括全氟聚醚聚合物。根据本申请实施例的防护涂层，通过设置改性聚硅氧烷聚合物的第一涂层和全氟聚醚聚合物的第二涂层，使防护涂层具有良好的防污、疏水效果，且与基体附着力强，并且在该防护涂层用于显示器的触控面板时，可以降低静电积累带来的不利影响，有利于提升使用该防护涂层的显示器运行的稳定性和寿命。

The embodiments of the present application provide a protective coating and a preparation method thereof, a touch panel, a display and a vehicle, wherein the protective coating includes: a first coating and a second coating. The first coating includes a modified polysiloxane polymer and is used to connect to a substrate, the modified polysiloxane polymer includes an adhesive resin component and an antistatic resin component; the second coating is provided on the side of the first coating away from the substrate, and the second coating includes a perfluoropolyether polymer. According to the protective coating of the embodiment of the present application, by providing a first coating of a modified polysiloxane polymer and a second coating of a perfluoropolyether polymer, the protective coating has good anti-fouling and hydrophobic effects, and has strong adhesion to the substrate, and when the protective coating is used for a touch panel of a display, it can reduce the adverse effects of static electricity accumulation, which is beneficial to improving the stability and life of the display using the protective coating.

Description

Protective coating, preparation method thereof, touch panel, display and vehicle
Technical Field
The embodiment of the application relates to the technical field of protective coatings, in particular to a protective coating, a preparation method thereof, a touch panel, a display and a vehicle.
Background
In the related art, a touch panel of a display is often used through touch operation, more stains are left on the display panel after long-term operation, the display panel is difficult to clean, condensed water drops appear on the surface of a display screen in rainy and foggy weather with high humidity, in addition, electrostatic problems can appear in the process of touching the display panel by fingers, and the problems can influence the running stability and the service life of the display. Accordingly, improvements are needed.
Disclosure of Invention
The embodiment of the application provides a protective coating which has good antifouling and hydrophobic effects and strong adhesive force with a matrix, and when the protective coating is used for a touch panel of a display, adverse effects caused by static accumulation can be reduced, so that the stability and the service life of the operation of the display using the protective coating are improved.
The application also provides a preparation method of the protective coating.
The application further provides a touch panel with the protective coating.
The application further provides a display with the touch panel.
The application further provides a vehicle with the display.
The protective coating according to the embodiment of the first aspect of the application comprises a first coating, wherein the first coating comprises a modified polysiloxane polymer and is used for being connected with a substrate, the modified polysiloxane polymer comprises an adhesive resin component and an antistatic resin component, and a second coating is arranged on the side, away from the substrate, of the first coating, and comprises a perfluoropolyether polymer.
According to the protective coating provided by the embodiment of the application, the first coating comprising the polysiloxane polymer is arranged and is connected with the substrate, the adhesion of the first coating can be enhanced by arranging the adhesive resin component in the modified polysiloxane polymer, so that the adhesion of the protective coating to the substrate can be enhanced, the durability of the protective coating is improved, the adverse effect caused by static accumulation in the use process of the protective coating when the protective coating is used for a touch panel can be reduced by arranging the antistatic resin component in the modified polysiloxane polymer, and the protective coating further comprises a second coating arranged on one side of the first coating, which is far away from the substrate, wherein the second coating comprises the perfluoropolyether polymer, and the second coating with the perfluoropolyether polymer is used as a surface layer, so that the protective coating has good antifouling and hydrophobic effects, and the stability and the service life of a display using the protective coating can be improved.
According to some embodiments of the application, the adhesive resin component comprises- (CH 2)a CHCOOH-, with a≥1 and an integer.
In the above technical solution, the adhesion of the first coating layer can be enhanced by making the adhesive resin component include- (CH 2)a CHCOOH-, so that the adhesion of the protective coating layer to the substrate can be enhanced.
According to some embodiments of the application, the antistatic resin component comprises- (CH 2)b O-, with b≥1 and is an integer.
In the technical scheme, the antistatic resin component comprises- (CH 2)b O-, so that the protective coating has better antistatic performance.
According to some embodiments of the application, the modified polysiloxane polymer has the molecular structural formula:
Wherein R 1 is one of hydroxyl, carboxyl, epoxy or amino, R 2 is one of methyl, ethyl, aromatic or hydroxyl, x is more than or equal to 60 and less than or equal to 60, y is more than or equal to 24 and less than or equal to 60, m is more than or equal to 33 and less than or equal to 83, and x, y and m are integers.
In the technical scheme, the molecular structural formula of the modified polysiloxane polymer is set to be the molecular formula structure, so that the first coating has good adhesion and antistatic performance.
According to some embodiments of the application, in the infrared spectrum of the protective coating, there is a characteristic peak corresponding to-Si-O-Si-at 1080cm -1, a characteristic peak corresponding to C-F between 1100cm -1～1300cm-1, a characteristic peak corresponding to C-O-C between 900cm -1～1000cm-1, and a characteristic peak corresponding to an aromatic ring between 700cm -1～800cm-1.
In the technical scheme, the characteristic peaks corresponding to the-Si-O-Si-, C-F, C-O-C and the aromatic ring exist at the corresponding positions in the infrared spectrogram, so that adverse effects caused by static accumulation in the use process can be reduced when the protective coating is used for the touch panel, the protective coating can have good antifouling and hydrophobic effects, and the stability and the service life of the display using the protective coating are improved.
According to some embodiments of the application, there is a characteristic peak of-COOH correspondence between 1700cm -1～1725cm-1 in an infrared spectrum of the protective coating.
In the technical scheme, the adhesion of the protective coating can be enhanced by existence of the characteristic peak of-COOH at the corresponding position in the infrared spectrogram, so that the adhesion of the protective coating and a matrix can be enhanced, and the durability of the protective coating is improved.
According to some embodiments of the application, the contact angle of the surface of the protective coating is 100 ° to 128 °.
In the technical scheme, the contact angle of the surface of the protective coating is set to be 100-128 degrees, so that the surface of the protective coating has good hydrophobic performance and antifouling performance, antifouling and hydrophobic effects are achieved, and cleaning of the protective coating is facilitated.
According to some embodiments of the application, the protective coating has a contact angle decrease angle of <5 ° on a surface of the protective coating after a predetermined time of aging endurance test.
In the technical scheme, after the protective coating is subjected to the aging endurance test for more than or equal to 500 hours, the contact angle of the surface of the protective coating is reduced by an angle of less than 5 degrees, so that the protective coating can still have good hydrophobic performance and antifouling performance after long-time use.
According to some embodiments of the application, the root mean square roughness of the surface of the protective coating is 3.5nm.
In the technical scheme, the root mean square roughness of the surface of the protective coating is 3.5nm, so that the surface of the protective coating is smooth, liquid is difficult to stay on the surface of the protective coating, and a user can have good touch feeling when the protective coating is used on a touch panel of a display.
According to some embodiments of the application, the thickness of the protective coating is 30-50 nm.
In the technical scheme, the thickness of the protective coating is set to be 30-50 nm, so that the protective coating has a good protective effect.
According to some embodiments of the application, the thickness of the first coating is 10-30 nm, and the thickness of the second coating is 20-40 nm.
In the technical scheme, the thickness of the first coating is set to be 10-30 nm, so that the first coating has strong adhesive force with a substrate and good antistatic performance, and the thickness of the second coating is set to be 20-40 nm, so that the protective coating has good antifouling and hydrophobic effects.
According to some embodiments of the application, the modified polysiloxane polymer has solubility in ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether, and the perfluoropolyether polymer has solubility in acetone, toluene or perfluoropropane.
In the technical scheme, the modified polysiloxane polymer has solubility in ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether, and the perfluoropolyether polymer has solubility in acetone, toluene or perfluoropropane, so that in the process of preparing the protective coating, the modified polysiloxane polymer can be dissolved in the ethylene glycol, the propylene glycol, the toluene, the chloroform or the diethyl ether to form a substance with fluidity so as to be conveniently coated on a substrate, and the perfluoropolyether polymer can be dissolved in the acetone, the toluene or the perfluoropropane to form the substance with fluidity so as to be conveniently coated on the first coating, thereby being capable of making the preparation process of the protective coating lower in difficulty and the prepared protective coating more uniform.
According to a second aspect of the present application, the method for preparing a protective coating according to the first aspect of the present application includes:
Cleaning the surface of the substrate;
Forming the first coating on the surface of the substrate;
forming the second coating layer on the surface of the first coating layer;
And drying the substrate with the first coating and the second coating at a first drying temperature for a first preset period of time to form the protective coating on the substrate.
According to the preparation method of the protective coating, the surface grease and hydrocarbon dirt can be removed by carrying out plasma cleaning on the surface of the substrate, the surface reaction groups are activated, the polar groups in the first coating and hydroxyl groups, carboxyl groups and the like on the surface of the substrate can conveniently form chemical bonds, so that the adhesive force of the first coating is enhanced, the first coating of the coating is formed on the surface of the substrate by a spin coating process, the first coating attached to the surface of the substrate can be more uniform, the subsequent attachment of the second coating to the first coating is facilitated, the adhesive force of the second coating is improved, the coating of the second coating is carried out in a vacuum environment by an evaporation process, the influence of impurities and gas molecules in air on the film forming process of the second coating can be avoided, and the purity and compactness of the second coating are ensured.
According to some embodiments of the present application, the first coating layer is formed on the surface of the substrate by a spin coating process, and the process parameters of the spin coating process include a spin coating rotation speed of 500-2000 rpm and a spin coating time of 20-30 s.
According to the technical scheme, the spin coating rotating speed is 500-2000 rpm, so that the first coating on the substrate is more uniform, the adhesive force with the substrate is stronger, the spin coating time is set to be 20-30 s, and the spin coating efficiency of the first coating is higher.
According to some embodiments of the application, the second coating is formed on the surface of the first coating by adopting an evaporation process, wherein the process parameters of the evaporation process comprise an evaporation rate of 0.3-0.5 nm/s, a vacuum degree of 3-5 MPa, and a crucible temperature of 380-400 ℃.
According to the technical scheme, the evaporation rate is set to be 0.3-0.5 nm/s, the evaporation process can be more stable, the second coating has good compactness, the content of gas molecules is reduced by setting the vacuum degree to be 3-5 MPa, the influence of the gas molecules on the second coating is reduced, the crucible temperature is set to be 380-400 ℃, the second coating can be stable in a gas state, the stability of the evaporation process is maintained, and the second coating has good compactness.
According to some embodiments of the application, after the first coating is formed on the surface of the substrate and before the second coating is formed on the surface of the first coating, the first coating is dried at a second drying temperature for a second preset period of time, the second preset period of time being less than the first preset period of time.
According to the technical scheme, after spin coating is finished by adopting a spin coating process and before the second coating is formed on the surface of the first coating, the first coating is dried for a second preset time at a second drying temperature, so that the organic solvent in the first coating can volatilize, the curing film forming of the first coating is facilitated, the second preset time for drying the first coating is smaller than the first preset time for integrally drying the protective coating, the first coating is prevented from being cracked due to overlength accumulated drying time of the first coating, and the forming quality of the protective coating is facilitated to be improved.
According to some embodiments of the application, the first drying temperature is 130-150 ℃, and the first preset time period is 2-3 hours.
In the technical scheme, the first drying temperature is set to 130-150 ℃, so that the organic solvent in the protective coating volatilizes, the curing film forming of the protective coating is facilitated, and the protective coating is prevented from cracking due to overhigh temperature.
According to the embodiment of the first aspect of the application, the protective coating covers the outer surface of the panel body, and the panel body forms the matrix.
According to the touch panel provided by the embodiment of the application, the protective coating is provided with good antifouling and hydrophobic effects and has strong adhesive force with the matrix, and when the protective coating is used for the touch panel of a display, adverse effects caused by static accumulation can be reduced, so that the stability and the service life of the operation of the display using the protective coating are improved.
The display according to the fourth aspect of the application comprises the touch panel according to the third aspect of the application.
According to the display provided by the embodiment of the application, the protective coating used by the touch panel has good antifouling and hydrophobic effects and strong adhesion with the matrix, and when the protective coating is used for the touch panel of the display, adverse effects caused by static accumulation can be reduced, so that the stability and the service life of the operation of the display using the protective coating are improved.
A vehicle according to an embodiment of the fifth aspect of the application comprises a display according to an embodiment of the fourth aspect of the application.
According to the vehicle provided by the embodiment of the application, the display is provided with the protective coating which has good antifouling and hydrophobic effects and strong adhesion with the matrix, and when the protective coating is used for the touch panel of the display, adverse effects caused by static accumulation can be reduced, so that the stability and the service life of the display using the protective coating are improved.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic cross-sectional view of a protective coating according to one embodiment of the present application;
FIG. 2 is a schematic flow chart of a method for preparing a protective coating according to an embodiment of the present application;
FIG. 3 is a scanning electron microscope (scanning electron microscope, hereinafter SEM) view of a protective coating provided in accordance with one embodiment of the present application;
FIG. 4 is a graph comparing hydrophobic performance tests of a protective coating provided by an embodiment of the present application;
FIG. 5 is a comparative graph of endurance reliability tests of a protective coating provided in accordance with one embodiment of the present application;
FIG. 6 is a graph comparing the anti-fouling effect of a substrate coated with a protective coating with a substrate without a protective coating according to one embodiment of the application;
Fig. 7 is a graph comparing stain cleaning effects of a substrate coated with a protective coating and a substrate without a protective coating according to an embodiment of the present application.
Reference numerals:
10. A protective coating, 11, a first coating, 12, a second coating;
20. A substrate.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the application more clear, the application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
A protective coating 10 according to an embodiment of the present application is described below with reference to fig. 1-7.
Referring to fig. 1, a protective coating 10 provided in an embodiment of the present application includes a first coating 11 and a second coating 12.
The first coating layer 11 includes a modified polysiloxane polymer including an adhesive resin component and an antistatic resin component and the first coating layer 11 is used for connection with the substrate 20, and the second coating layer 12 is provided on a side of the first coating layer 11 remote from the substrate 20, the second coating layer 12 including a perfluoropolyether polymer.
The modified polysiloxane polymer is a polymer taking Si-O-Si bonds as a main chain, and the structure ensures that the modified polysiloxane polymer has excellent ultraviolet decomposition resistance, heat stability, stain resistance and chemical corrosion resistance.
Wherein, the adhesive resin component in the modified polysiloxane polymer can be combined with active groups such as hydroxyl groups, oxygen anion groups and the like on the surface of the matrix 20, so that the adhesive force of the protective coating 10 to the surface of the matrix 20 is enhanced, and the durability of the protective coating 10 is improved. The protective coating 10 was evaluated by adhesion testing according to the GB/T9286 method, and the test results reached grade 0, indicating excellent adhesion properties.
The antistatic resin component in the modified polysiloxane polymer can enable static charges to be rapidly conducted away and prevent static accumulation, so that when the protective coating 10 is used for a touch panel, the static accumulation in the use process can be reduced, and the influence of the static accumulation on a display using the touch panel is reduced.
The perfluoropolyether polymer has a low free energy on the surface and hydrophobic and oleophobic properties, which makes it difficult for water and other liquids to wet and adhere to the surface of the perfluoropolyether polymer, thereby preventing dirt from remaining on the protective coating 10 and facilitating cleaning of the protective coating 10, and has a high resistance to most corrosive chemicals such as acids, bases and oxidizing agents, which makes the perfluoropolyether polymer stable in harsh environments, and also has a low coefficient of friction, thus reducing abrasion due to chemical corrosion and physical friction, and improving the hydrophobic, slip and durability properties of the protective coating 10.
The polysiloxane polymer of the first coating 11 is arranged on one side close to the substrate 20, which is beneficial to enhancing the adhesion of the protective coating 10 to the surface of the substrate 20, conducting off electrostatic charges and preventing static accumulation, and the perfluoropolyether polymer of the second coating 12 is arranged on one side far away from the substrate 20, which is beneficial to bearing external chemical corrosion and physical friction, and improving the waterproof, slipping and durable performances of the protective coating 10.
According to the protective coating 10 of the embodiment of the application, by arranging the first coating 11 comprising the polysiloxane polymer and connecting the first coating 11 with the substrate 20, the adhesion of the first coating 11 can be enhanced by arranging the adhesive resin component in the modified polysiloxane polymer, so that the adhesion of the protective coating 10 with the substrate 20 can be enhanced, the durability of the protective coating 10 is improved, the adverse effect caused by static electricity accumulation during the use of the protective coating 10 when the protective coating 10 is used for a touch panel can be reduced by arranging the antistatic resin component in the modified polysiloxane polymer, and the protective coating 10 further comprises arranging the second coating 12 on the side, facing away from the substrate 20, of the first coating 11, and arranging the second coating 12 to comprise the perfluoropolyether polymer, wherein the second coating 12 with the perfluoropolyether polymer is used as a surface layer, so that the protective coating 10 has good antifouling and hydrophobic effects, thereby being beneficial to improving the running stability and service life of a display using the protective coating 10.
According to some embodiments of the application, the coating adhesion resin component comprises- (CH 2)a CHCOOH-, with a≥1 and an integer.
For example, a may have a value of 1, in which case the coating adhesion resin component includes-CH 2 CHCOOH-; the value of a may be 2, in which case the coating adhesion resin component includes-CH 2CH2 CHCOOH-; the value of a may be 3 where the coating adhesion resin component comprises-CH 2CH2CH2 CHCOOH-, and the value of a may be 4 where the coating adhesion resin component comprises-CH 2CH2CH2CH2 CHCOOH-.
Wherein, by making the adhesive resin component include- (CH 2)a CHCOOH-, the adhesive resin component contains reactive polar groups such as carboxyl groups, which can react with active groups such as hydroxyl groups, oxyanions, etc. on the surface of the substrate 20 to form chemical bonds, thereby enhancing the adhesion of the modified polysiloxane polymer.
In the above technical solution, the adhesion of the first coating layer 11 can be enhanced by making the adhesive resin component include- (CH 2)a CHCOOH-, so that the adhesion of the protective coating layer to the substrate can be enhanced.
According to some embodiments of the application, the antistatic resin component comprises- (CH 2)b O-, with b≥1 and is an integer.
For example, b may have a value of 1, in which case the antistatic resin component includes-CH 2 O-; the value of b may be 2 when the antistatic resin component comprises-CH 2CH2 O-, and the value of b may be 3 when the antistatic resin component comprises-CH 2CH2CH2 O-.
By enabling the antistatic resin component to comprise- (CH 2)b O-, the antistatic resin component contains polar groups such as ether groups, and the groups can be combined with moisture in the air through hydrogen bonds to form a conductive channel, so that static charges can be rapidly removed, and static accumulation is prevented.
In the above technical solution, the protective coating 10 can have better antistatic properties by making the antistatic resin component include- (CH 2)b O-).
According to some embodiments of the application, the coating-modified polysiloxane polymer has the molecular structural formula:
Wherein R 1 is one of hydroxyl, carboxyl, epoxy or amino, R 2 is one of methyl, ethyl, aromatic or hydroxyl, x is more than or equal to 60 and less than or equal to 60, y is more than or equal to 24 and less than or equal to 60, m is more than or equal to 33 and less than or equal to 83, and x, y and m are integers.
For example, R 1 may be a hydroxyl group, a carboxyl group, an epoxy group, or a carboxyl group, and R 2 may be a methyl group, an ethyl group, an aromatic group, or a hydroxyl group.
Wherein x is the number of siloxane chains in the modified polysiloxane polymer, y is the number of adhesive resin components in the modified polysiloxane polymer, and m is the number of antistatic resin components in the modified polysiloxane polymer. For example, x may have values of 60, 85, 113, 129, 150, etc., y may have values of 24, 35, 47, 53, 60, etc., and m may have values of 33, 45, 60, 74, 83, etc.
In the above technical solution, by setting the molecular structural formula of the modified polysiloxane polymer to the molecular formula structure described above, the first coating layer 11 can have better adhesion and antistatic properties.
According to some embodiments of the present application, in the IR spectrum of protective coating 10, there is a characteristic peak at 1080cm -1 for-Si-O-Si-, a characteristic peak between 1100cm -1～1300cm-1 for C-F-, a characteristic peak between 900cm -1～1000cm-1 for C-O-C-, and a characteristic peak between 700cm -1～800cm-1 for aromatic rings.
Wherein-Si-O-Si-represents an organosilicon contained in the modified polysiloxane polymer, C-F represents fluorine contained in the perfluoropolyether polymer, and C-O-C represents ether bond contained in the perfluoropolyether polymer.
In the above technical scheme, the characteristic peaks corresponding to the-Si-O-Si-, C-F, C-O-C and the aromatic ring exist at the corresponding positions in the infrared spectrogram, so that adverse effects caused by static accumulation in the use process of the protective coating 10 when the protective coating 10 is used for a touch panel can be reduced, and the protective coating 10 can have good antifouling and hydrophobic effects, thereby being beneficial to improving the stability and service life of the operation of a 10 display using the protective coating.
According to some embodiments of the application, in the 10 IR spectrum of the protective coating, there is a characteristic peak corresponding to-COOH between 1700cm -1～1725cm-1.
Wherein, -COOH represents a carboxyl group of the adhesion resin component in the modified polysiloxane polymer.
In the above technical solution, the adhesion of the first coating 11 can be enhanced by the existence of the characteristic peak of-COOH at the corresponding position in the infrared spectrogram, so that the adhesion of the protective coating 10 to the substrate can be enhanced, and the durability of the protective coating 10 can be improved.
According to some embodiments of the present application, the contact angle of the surface of the protective coating 10 is 100 ° to 128 °. The magnitude of the surface contact angle directly reflects the degree of wetting of the solid by the liquid, and if the surface contact angle is less than 90 °, the solid surface is hydrophilic, and if the surface contact angle is greater than 90 °, the solid surface is hydrophobic. For example, the contact angle of the surface of protective coating 10 may be 100 °, 105 °, 110 °, 115 °, 120 °, 128 °, and the like.
In the technical scheme, the contact angle of the surface of the protective coating 10 is set to be 100-128 degrees, so that the surface of the protective coating 10 has good hydrophobic performance and antifouling performance, antifouling and hydrophobic effects are achieved, and cleaning of the protective coating 10 is facilitated.
According to some embodiments of the present application, referring to fig. 5, the contact angle of the surface of the protective coating 10 is reduced by an angle <5 ° after the protective coating 10 has been subjected to the aging endurance test for a preset time.
For example, the burn-in endurance test may include at least one of a xenon lamp burn-in test, a heat burn-in test, and a damp heat burn-in test. For the xenon lamp aging test, the preset time of the test is less than or equal to 1500h, wherein the 1500h can correspond to the actual use time of the simulated vehicle for 5-8 years, for the thermal aging test, the preset time of the test is less than or equal to 500h, wherein the 500h can correspond to the actual use time of the simulated vehicle for 5-8 years, and for the wet thermal aging test, the preset time of the test is less than or equal to 504h, wherein the 504h can correspond to the actual use time of the simulated vehicle for 5-8 years. For example, the xenon lamp aging test is to irradiate a glass test piece coated with the protective coating 10 by a xenon lamp with a radiation intensity of (0.55.+ -. 0.02) W/(m 2. Multidot.nm) for 1500 hours, the thermal aging test is to place the glass test piece coated with the protective coating 10 in an environment of 85 ℃ for 500 hours, and the wet thermal aging test is to place the glass test piece coated with the protective coating 10 in an environment of 95% relative humidity and 65 ℃ for 504 hours.
For example, the protective coating 10 may be subjected to a xenon lamp aging endurance test of 500h, 600h, 700h, 800h, 1000h, 1460h, 1500h, etc. The protective coating 10 may be subjected to heat aging durability tests of 400h, 450h, 468h, 500h, etc. The protective coating 10 may be subjected to wet heat aging durability tests of 450h, 468h, 500h, 504h, etc.
In the above technical solution, by subjecting the protective coating 10 to the aging endurance test for 500h or more, the decrease angle of the contact angle of the surface of the protective coating 10 is <5 °, so that the protective coating 10 can still have good hydrophobic performance and antifouling performance after long-term use.
According to some embodiments of the present application, the root mean square roughness of the surface of the protective coating 10 is 3.5nm. The smaller the surface roughness, the smoother the surface and the larger the surface roughness, the rougher the surface.
In the above technical solution, the surface of the protective coating 10 can be smoothed by making the root mean square roughness of the surface of the protective coating 10 3.5nm, so that the liquid is difficult to stay on the surface of the protective coating 10, and the user can have a good touch feeling when the protective coating 10 is used on a touch panel of a display.
According to some embodiments of the present application, referring to fig. 1, the thickness d 3 of the protective coating 10 is 30-50 nm.
For example, the thickness of the protective coating 10 may be 30nm, 35nm, 40nm, 45nm, 50nm, etc. If the thickness of the protective coating 10 is too thin, the protective effect is limited, the lifetime is short, and the difficulty of the manufacturing process is great, and if the thickness of the protective coating 10 is too thick, the material is wasted and the thickness dimension is large.
In the above technical scheme, the thickness of the protective coating 10 is set at 30-50 nm, so that the protective coating 10 has a good protective effect.
According to some embodiments of the present application, referring to fig. 1, the thickness d 1 of the first coating 11 is 10 to 30nm, and the thickness of the second coating 12d 2 is 20 to 40nm.
For example, the thickness of the first coating layer 11 may be 10nm, 15nm, 20nm, 25nm, 30nm, etc., and the thickness of the second coating layer 12 may be 20nm, 25nm, 30nm, 35nm, 40nm, etc.
In the technical scheme, the thickness of the first coating 11 is set to be 10-30 nm, so that the first coating 11 has strong adhesion with the substrate 20 and good antistatic performance, and the thickness of the second coating 12 is set to be 20-40 nm, so that the protective coating 10 has good antifouling and hydrophobic effects.
According to some embodiments of the application, the modified polysiloxane polymer has solubility in ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether, and the perfluoropolyether polymer has solubility in acetone, toluene or perfluoropropane.
For example, the modified polysiloxane polymer may be soluble in one of ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether, and the perfluoropolyether polymer may be soluble in one of acetone, toluene or perfluoropropane.
In the above technical solution, the modified polysiloxane polymer is dissolved in ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether, and the perfluoropolyether polymer is dissolved in acetone, toluene or perfluoropropane, so that in the process of preparing the protective coating 10, the modified polysiloxane polymer can be dissolved in ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether to form a flowable substance, so that the modified polysiloxane polymer can be conveniently coated on the substrate 20, and the perfluoropolyether polymer can be dissolved in acetone, toluene or perfluoropropane to form a flowable substance, so that the perfluoropolyether polymer can be conveniently coated on the first coating 11, so that the preparation process difficulty of the protective coating 10 is low, and the prepared protective coating 10 is relatively uniform.
Referring to fig. 2, according to a method for preparing a protective coating 10 according to an embodiment of the second aspect of the present application, the protective coating 10 is the protective coating 10 according to the embodiment of the first aspect of the present application, and the method for preparing the protective coating 10 includes:
plasma cleaning is performed on the surface of the substrate 20, for example, the plasma cleaning time is 5-10 min, the plasma cleaning can remove surface grease and hydrocarbon dirt, and activate surface reaction groups, so that polar groups in the first coating 11 and hydroxyl groups, carboxyl groups and the like on the surface of the substrate 20 can form chemical bonds, and the adhesive force of the first coating 11 is enhanced;
The first coating 11 is formed on the surface of the substrate 20 by adopting a spin coating process, wherein the first coating 11 can be coated in a mode of dissolving in an organic solvent in order to be conveniently attached to the surface of the substrate 20 in the coating process, the spin coating process enables a material with fluidity coated on the substrate 20 to form a uniform film under the action of centrifugal force by rotating the substrate at a high speed, and the spin coating process can enable the first coating 11 attached on the surface of the substrate 20 to be more uniform, thereby being beneficial to attaching the second coating 12 on the first coating 11 in the subsequent process and improving the adhesive force of the second coating 12;
Forming a second coating layer 12 on the surface of the first coating layer 11 by adopting an evaporation process, wherein the second coating layer 12 can be coated in a mode of dissolving in an organic solvent in the coating process, the evaporation process can be performed in a vacuum environment, and the influence of impurities and gas molecules in air on the film forming process of the second coating layer 12 can be avoided, so that the purity and compactness of the second coating layer 12 are ensured;
The substrate 20 on which the first coating 11 and the second coating 12 are formed is dried at a first drying temperature for a first preset period of time to form the protective coating 10 on the substrate 20, and the first coating 11 is conveniently formed into a film by drying the first coating 11 at the first drying temperature, and the second coating 12 is conveniently applied to the surface of the first coating 11, so that the first coating 11 and the second coating 12 are prevented from being mixed.
Wherein, the organic solvent used in the process of preparing the first coating 11 can be ethylene glycol, propylene glycol, toluene, chloroform or diethyl ether, and the organic solvent used in the process of preparing the first coating 11 can be acetone, toluene or perfluoropropane.
According to the preparation method of the protective coating 10, through plasma cleaning of the surface of the substrate 20, surface grease and hydrocarbon dirt can be removed, surface reaction groups are activated, chemical bonds are formed between polar groups in the first coating 11 and hydroxyl groups, oxyanion activation groups and the like on the surface of the substrate 20, so that the adhesive force of the first coating 11 is enhanced, the first coating 11 is formed on the surface of the coated substrate 20 through a spin coating process, the first coating 11 attached to the surface of the substrate 20 can be more uniform, the subsequent attachment of the second coating 12 to the first coating 11 is facilitated, the adhesive force of the second coating 12 is improved, the coating of the second coating 12 is carried out in a vacuum environment through an evaporation process, the influence of impurities and gas molecules in air on the film forming process of the second coating 12 can be avoided, and the purity and the compactness of the second coating 12 are ensured.
According to some embodiments of the present application, the first coating layer 11 is formed on the surface of the substrate by a spin coating process, wherein the process parameters of the spin coating process include a spin coating rotation speed of 500-2000 rpm and a spin coating time of 20-30 s.
For example, spin coating speeds may be 500rpm, 1000rpm, 1500rpm, 2000rpm, etc., and spin coating times may be 20s, 22s, 24s, 26s, 28s, 30s, etc. If the spin speed is too high or too low, the spin of the first coating 11 on the substrate 20 may be uneven, and if the spin time is too long, the spin efficiency may be too low.
In the technical scheme, the spin coating rotation speed is 500-2000 rpm, so that the first coating 11 on the substrate 20 is more uniform, the adhesion force with the substrate 20 is stronger, and the spin coating time is set to be 20-30 s, so that the spin coating efficiency of the first coating 11 is higher.
According to some embodiments of the present application, an evaporation process is used to form the second coating 12 on the surface of the first coating 11, and the process parameters of the evaporation process include an evaporation rate of 0.3-0.5 nm/s, a vacuum degree of 3-5 mpa, and a crucible temperature of 380-400 ℃.
For example, the evaporation rate may be 0.3nm/s, 0.35nm/s, 0.4nm/s, 0.45nm/s, 0.5nm/s, etc., and if the evaporation rate is too low, the particle energy is low, the collision probability is small in the vacuum evaporation process, the formed second coating 12 is relatively loose, and the compactness and adhesion of the second coating 12 are reduced, and if the evaporation rate is too high, the uniformity of the second coating 12 may be affected.
For another example, the vacuum degree may be 3MPa, 3.5MPa, 4MPa, 4.5MPa, 5MPa, etc., if the vacuum degree is too low, the gas molecules interfere with the evaporation of the second coating layer 12, which may cause problems such as pitting and bubbles on the surface of the second coating layer 12 from the coating layer to the first coating layer 11, and if the vacuum degree is too high, the environmental requirement is too high, and the use cost is increased.
For another example, the crucible temperature may be 380 ℃, 385 ℃, 390 ℃, 395 ℃, 400 ℃ or the like, if the evaporation temperature is too low, the particle energy is low in the vacuum evaporation process, the collision probability is low, the formed second coating 12 is relatively loose, the compactness and adhesion of the second coating 12 are reduced, and if the evaporation temperature is too high, the uniformity of the second coating 12 may be affected.
In the technical scheme, the evaporation rate is set to be 0.3-0.5 nm/s, so that the evaporation process is more stable, the second coating 12 has good compactness, the content of gas molecules is reduced by setting the vacuum degree to be 3-5 MPa, the influence of the gas molecules on the second coating 12 is reduced, the crucible temperature is set to be 380-400 ℃, the second coating 12 can be stabilized in a gas state, the stability of the evaporation process is maintained, and the second coating 12 has good compactness.
According to some embodiments of the present application, after forming the first coating layer 11 on the surface of the substrate 20 and before forming the second coating layer 12 on the surface of the first coating layer 11, the first coating layer 11 is dried at a second drying temperature for a second preset period of time, which is less than the first preset period of time.
For example, the second drying temperature may be 160 ℃, and the second preset time period may be 30 minutes. If the second preset time period for drying the coating is longer than the first preset time period for drying the coating, the accumulated drying time of the first coating 11 may be too long, which may cause the first coating 11 to crack.
In the technical scheme, after the spin coating process is finished and before the second coating 12 is formed on the surface of the first coating 11, the first coating 11 is dried for a second preset time at a second drying temperature, so that the organic solvent in the first coating 11 can volatilize, the curing and film forming of the first coating 11 can be accelerated, and the accumulated drying time of the first coating 11 can be prevented from causing the first coating 11 to be cracked due to overlong accumulated drying time of the first coating 11 by using the second preset time for drying the first coating 11 to be smaller than the first preset time for integrally drying the protective coating 10, thereby being beneficial to improving the forming quality of the protective coating 10.
According to some embodiments of the application, the first drying temperature is 130-150 ℃, and the first preset time period is 2-3 hours.
For example, the first drying temperature may be 130 ℃, 135 ℃, 140 ℃, 145 ℃,150 ℃ and the like, and the first preset time period may be 2h, 2h20min, 2h40min, 3h and the like. If the first drying temperature of the protective coating 10 is too high or the first preset time period is too long, the protective coating 10 may be cracked, and if the first drying temperature of the protective coating 10 is too low or the first preset time period is too short, the evaporation condition of the organic solvent may not be reached.
In the above technical scheme, the organic solvent in the protective coating 10 can be volatilized, which is favorable for accelerating the curing and film forming of the protective coating 10, and can prevent the protective coating 10 from drying and cracking caused by overhigh temperature.
A touch panel according to an embodiment of the third aspect of the present application comprises a panel body and a protective coating 10 according to an embodiment of the first aspect of the present application. The protective coating 10 covers the outer surface of the coated panel body, the protective coating 10 is a transparent coating or a light-transmitting coating, and the panel body forms a matrix 20. The touch panel may be a capacitive touch panel, a resistive touch panel, or the like. For example, the panel body is a transparent glass member or a resin member. The first coating 11 is connected with the panel body, and the second coating 12 is arranged on one side of the first coating 11 away from the panel body.
According to the touch panel provided with the protective coating 10, the protective coating 10 has good antifouling and hydrophobic effects and strong adhesion with the substrate 20, and when the protective coating 10 is used for the touch panel of a display, adverse effects caused by static accumulation can be reduced, so that the stability and the service life of the display using the protective coating 10 are improved.
A display according to an embodiment of the fourth aspect of the application comprises a touch panel coated according to an embodiment of the third aspect of the application. The display may be a cathode ray tube display, a plasma display, a liquid crystal display, or the like.
According to the display provided by the embodiment of the application, the protective coating 10 used by the touch panel has good antifouling and hydrophobic effects and strong adhesive force with the matrix 20, and when the protective coating 10 is used for the touch panel of the display, adverse effects caused by static accumulation can be reduced, so that the stability and service life of the operation of the display using the protective coating 10 are improved.
According to a fifth aspect of the application, a vehicle comprises a display coated according to the fourth aspect of the application. The vehicle can be a fuel oil vehicle, a fuel gas vehicle, a new energy vehicle or a railway vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended range vehicle.
According to the vehicle provided with the display, the protective coating 10 used by the display has good antifouling and hydrophobic effects and strong adhesion with the substrate 20, and when the protective coating 10 is used for a touch panel of the display, adverse effects caused by static accumulation can be reduced, interference of static on running of the vehicle is prevented, and the stability and the service life of running of the display using the protective coating 10 are facilitated.
The protective coating 10 of various embodiments of the present application is described below with reference to fig. 1-7.
In the case of example 1,
The modified polysiloxane resin used in the protective coating 10 of example 1 has the structure x=60, y=24, m=33, i.e. the modified polysiloxane polymer has the molecular structural formula:
The protective coating 10 of example 1 was prepared as follows:
Step (1) using a glass test piece as a matrix 20, cleaning the glass test piece by using plasma for 10min to remove surface grease and hydrocarbon dirt, and introducing reactive groups such as oxygen-containing polar groups (such as hydroxyl groups and oxygen anion groups) into the activated surface;
step (2) forming a first coating 11 on the glass test piece by adopting a spin coating process, wherein the spin coating rotating speed is 1000rpm, the spin coating time is 30s, the spin coating thickness is 25nm, after the spin coating is finished, the glass test piece is pre-baked for 30min under 160h, and finally the first coating 11 is formed on the surface of the glass test piece treated in the step (1);
and (3) forming a second coating layer 12 on the first coating layer 11 by adopting an evaporation process, wherein the evaporation rate is 0.5nm/s, the vacuum degree is 3mPa, and the crucible temperature is 400 ℃.
Step (4) the glass sample wafer coated with the first coating 11 and the second coating 12 in step (3) is dried at 140 ℃ for 3 hours, and finally the protective coating 10 is manufactured.
In the case of example 2,
The modified polysiloxane resin structure used for the protective coating 10 in example 2 has x=87, y=33, m=54, i.e. the modified polysiloxane polymer has the molecular structural formula:
The preparation steps of the protective coating 10 in example 2 are the same as those of the protective coating 10 in example 1 described above, and will not be repeated here.
In the case of example 3,
The modified polysiloxane resin used in the protective coating 10 of example 3 has the structure of x=121, y=45, m=72, i.e. the modified polysiloxane polymer has the molecular structural formula:
The preparation steps of the protective coating 10 in example 3 are the same as those of the protective coating 10 in example 1 described above, and will not be repeated here.
In the case of example 4,
The modified polysiloxane resin used in the protective coating 10 of example 4 had the structure x=100, y=37, m=54, i.e. the modified polysiloxane polymer had the molecular structural formula:
the preparation steps of the protective coating 10 in example 4 are the same as those of the protective coating 10 in example 1 described above, and will not be repeated here.
Referring to fig. 3, fig. 3 is an SEM image of the surface of the protective coating 10 of example 4, and it can be seen that the microstructure is smooth.
In example 5 the process was carried out,
The modified polysiloxane resin used in the protective coating 10 of example 5 had the molecular structural formula x=150, y=60, m=83, i.e. the modified polysiloxane polymer had the following molecular structural formula:
The preparation steps of the protective coating 10 in example 5 are the same as those of the protective coating 10 in example 1 described above, and will not be repeated here.
The performance test and evaluation method of the protective coating 10 of the above-described example 4 is described below with reference to fig. 4 to 7.
The protective coating 10 of example 4 was tested for the following properties:
(1) Hydrophobic Property test the protective coating 10 of example 4 was subjected to a hydrophobic property test according to the GB/T42694-2023 standard, and referring to FIG. 4, it can be seen that the surface contact angle of a glass coupon not coated with the protective coating 10 (i.e., a blank glass coupon) was 33.115 DEG;
(2) Endurance reliability test referring to FIG. 5, it can be seen that after heat aging (85 ℃ C./500 h) -subjecting the glass coupon coated with the protective coating 10 to an environment of 85 ℃ C., moist heat endurance (65 ℃ C./95 RH/504 h) -subjecting the glass coupon coated with the protective coating 10 to an environment of 95% relative humidity and 65 ℃ C., 504h, abrasion resistance (10N/5K times) -polishing the glass coupon coated with the protective coating 10 five thousand times at a force of 10N/time, and 1500h xenon lamp aging ((0.55.+ -. 0.02) W/(m 2. Nm))) -subjecting the glass coupon coated with the protective coating 10 to a test of (0.55.+ -. 0.02) W/(m 2. Nm) irradiation intensity of a xenon lamp for 1500h, etc., the decrease in surface contact angle <5 °, showing that the hydrophobic property remains substantially unchanged after passing through the environment in real-life application, has excellent endurance performance;
(3) The test of antifouling property referring to fig. 6, it can be seen that the glass coupon coated with the protective coating 10 is greatly improved in dust deposition removal, the glass coupon coated with the protective coating 10 has a good cleaning effect by taking away dust on the surface of the glass coupon when cleaning water drops roll off, while the glass coupon not coated with the protective coating 10 is difficult to clean by spreading the cleaning water drops on the surface of the glass and mixing with the dust, and referring to fig. 7, the glass coupon coated with the protective coating 10 is easy to clean after straw mushroom dark soy sauce and tomato sauce pollution and outdoor exposure simulation (80 ℃ per 48 h) by simple wiping with clear water and cleaning liquid, while the glass coupon not coated with the protective coating 10 cannot be removed cleanly and has a stain-dipping trace.
In the present application, a plurality means two or more.
In the present application, unless clearly defined otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected through an intermediate medium, or may be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The terms "first," "second," "third," "fourth," and the like in this disclosure, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate that a exists alone, while a and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.
All steps of the present application may be performed sequentially or randomly unless otherwise specified. For example, the method comprises steps a and B, meaning that the method may comprise steps a and B performed sequentially, or may comprise steps B and a performed sequentially. For example, the method may further include step C, meaning that step C may be added to the method in any order, e.g., the method may include steps A, B and C, may include steps A, C and B, may include steps C, A and B, etc.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (19)

1.一种防护涂层，其特征在于，包括：1. A protective coating, comprising: 第一涂层，所述第一涂层包括改性聚硅氧烷聚合物且用于与基体连接，所述改性聚硅氧烷聚合物包括粘附树脂组分以及抗静电树脂组分；a first coating layer comprising a modified polysiloxane polymer and configured to be bonded to a substrate, wherein the modified polysiloxane polymer comprises an adhesive resin component and an antistatic resin component; 第二涂层，所述第二涂层设于所述第一涂层的远离所述基体的一侧，所述第二涂层包括全氟聚醚聚合物。The second coating layer is disposed on a side of the first coating layer away from the substrate, and the second coating layer comprises a perfluoropolyether polymer. 2.根据权利要求1所述的防护涂层，其特征在于，所述粘附树脂组分包括-(CH2)aCHCOOH-，a≥1且为整数。2 . The protective coating according to claim 1 , wherein the adhesion resin component comprises —(CH 2 ) a CHCOOH—, where a is ≥1 and is an integer. 3.根据权利要求1所述的防护涂层，其特征在于，所述抗静电树脂组分包括-(CH2)bO-，b≥1且为整数。3 . The protective coating according to claim 1 , wherein the antistatic resin component comprises —(CH 2 ) b O—, where b is ≥ 1 and is an integer. 4.根据权利要求1-3任一项所述的防护涂层，其特征在于，所述改性聚硅氧烷聚合物的分子结构式为：4. The protective coating according to any one of claims 1 to 3, wherein the molecular structure of the modified polysiloxane polymer is: 其中，R1为羟基、羧基、环氧基或氨基中的一种，R2为甲基、乙基、芳香基团或羟基中的一种，60≤x≤150、24≤y≤60、33≤m≤83且x、y以及m均为整数。wherein R1 is one of hydroxyl, carboxyl, epoxy or amino, R2 is one of methyl, ethyl, aromatic group or hydroxyl, 60≤x≤150, 24≤y≤60, 33≤m≤83, and x, y and m are all integers. 5.根据权利要求1所述的防护涂层，其特征在于，在所述防护涂层的红外光谱谱图中：在1080cm-1处存在-Si-O-Si-对应的特征峰，在1100cm-1～1300cm-1之间存在C-F对应的特征峰，在900cm-1～1000cm-1之间存在C-O-C对应的特征峰，在700cm-1～800cm-1之间存在芳香环对应的特征峰。5. The protective coating according to claim 1, characterized in that in the infrared spectrum of the protective coating, there is a characteristic peak corresponding to -Si-O-Si- at 1080 cm -1 , a characteristic peak corresponding to CF between 1100 cm - 1 and 1300 cm -1 , a characteristic peak corresponding to COC between 900 cm -1 and 1000 cm -1 , and a characteristic peak corresponding to aromatic rings between 700 cm -1 and 800 cm -1 . 6.根据权利要求5所述的防护涂层，其特征在于，在所述防护涂层的红外光谱谱图中：在1700cm-1～1725cm-1之间存在-COOH对应的特征峰。6 . The protective coating according to claim 5 , wherein in the infrared spectrum of the protective coating, a characteristic peak corresponding to -COOH exists between 1700 cm −1 and 1725 cm −1 . 7.根据权利要求1所述的防护涂层，其特征在于，所述防护涂层的表面的接触角为100°～128°。7 . The protective coating according to claim 1 , wherein a contact angle of the surface of the protective coating is 100° to 128°. 8.根据权利要求1所述的防护涂层，其特征在于，所述防护涂层经过预设时间的老化耐久测试后，所述防护涂层的表面的接触角的降低角度＜5°。8. The protective coating according to claim 1, wherein after the protective coating undergoes an aging durability test for a preset time, a contact angle of the surface of the protective coating decreases by less than 5°. 9.根据权利要求1所述的防护涂层，其特征在于，所述防护涂层的表面的均方根粗糙度为3.5nm。9 . The protective coating according to claim 1 , wherein the root mean square roughness of the surface of the protective coating is 3.5 nm. 10.根据权利要求1所述的防护涂层，其特征在于，所述防护涂层的厚度为30～50nm。10 . The protective coating according to claim 1 , wherein the thickness of the protective coating is 30 to 50 nm. 11.根据权利要求1所述的防护涂层，其特征在于，所述第一涂层的厚度为10～30nm，所述第二涂层的厚度为20～40nm。11 . The protective coating according to claim 1 , wherein the thickness of the first coating is 10 to 30 nm, and the thickness of the second coating is 20 to 40 nm. 12.根据权利要求1所述的防护涂层，其特征在于，所述改性聚硅氧烷聚合物在乙二醇、丙二醇、甲苯、氯仿或乙醚中具有溶解性；所述全氟聚醚聚合物在丙酮、甲苯或全氟丙烷中具有溶解性。12. The protective coating according to claim 1, wherein the modified polysiloxane polymer is soluble in ethylene glycol, propylene glycol, toluene, chloroform or ether; and the perfluoropolyether polymer is soluble in acetone, toluene or perfluoropropane. 13.一种防护涂层的制备方法，其特征在于，所述防护涂层为根据权利要求1-12中任一项所述的防护涂层，所述防护涂层的制备方法包括：13. A method for preparing a protective coating, characterized in that the protective coating is the protective coating according to any one of claims 1 to 12, and the method for preparing the protective coating comprises: 对基体的表面进行清洗；Cleaning the surface of the substrate; 在所述基体的表面形成所述第一涂层；forming the first coating on the surface of the substrate; 在所述第一涂层的表面形成所述第二涂层；forming the second coating layer on the surface of the first coating layer; 将形成有所述第一涂层以及所述第二涂层的所述基体，在第一烘干温度下烘干第一预设时长，以在所述基体上形成所述防护涂层。The substrate having the first coating layer and the second coating layer formed thereon is dried at a first drying temperature for a first preset time to form the protective coating layer on the substrate. 14.根据权利要求13所述的防护涂层的制备方法，其特征在于，所述在所述基体的表面形成所述第一涂层采用旋涂工艺，所述旋涂工艺的工艺参数包括：旋涂转速为500～2000rpm，旋涂时间为20～30s；14. The method for preparing a protective coating according to claim 13, wherein the first coating is formed on the surface of the substrate by a spin coating process, and the process parameters of the spin coating process include: a spin coating speed of 500 to 2000 rpm, and a spin coating time of 20 to 30 seconds; 和/或，所述在所述第一涂层的表面形成所述第二涂层采用蒸镀工艺，所述蒸镀工艺的工艺参数包括：蒸镀速率为0.3～0.5nm/s，真空度为3～5MPa，坩埚温度为380～400℃。And/or, the second coating layer is formed on the surface of the first coating layer by an evaporation process, and the process parameters of the evaporation process include: an evaporation rate of 0.3 to 0.5 nm/s, a vacuum degree of 3 to 5 MPa, and a crucible temperature of 380 to 400°C. 15.根据权利要求13所述的防护涂层的制备方法，其特征在于，在所述基体的表面形成所述第一涂层之后且在所述第一涂层的表面形成所述第二涂层之前，将所述第一涂层在第二烘干温度下烘干第二预设时长，所述第二预设时长小于所述第一预设时长。15. The method for preparing a protective coating according to claim 13, characterized in that after the first coating is formed on the surface of the substrate and before the second coating is formed on the surface of the first coating, the first coating is dried at a second drying temperature for a second preset time, and the second preset time is less than the first preset time. 16.根据权利要求13所述的防护涂层的制备方法，其特征在于，所述第一烘干温度为130～150℃，所述第一预设时长为2～3h。16 . The method for preparing a protective coating according to claim 13 , wherein the first drying temperature is 130-150° C., and the first preset time is 2-3 hours. 17.一种触控面板，其特征在于，包括：17. A touch panel, comprising: 面板本体；Panel body; 根据权利要求1-12中任一项所述的防护涂层，所述防护涂层覆盖在所述面板本体的外表面，所述面板本体构成所述基体。The protective coating according to any one of claims 1-12, wherein the protective coating covers the outer surface of the panel body, and the panel body constitutes the substrate. 18.一种显示器，其特征在于，包括：根据权利要求17所述的触控面板。18 . A display, comprising: the touch panel according to claim 17 . 19.一种车辆，其特征在于，包括：根据权利要求18所述的显示器。19. A vehicle, comprising: the display according to claim 18.
CN202510980322.5A 2025-07-15 2025-07-15 Protective coating and preparation method thereof, touch panel, display and vehicle Pending CN120818307A (en)

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