Anti-radiation, anti-hand-sweat, anti-seismic and high-transmittance mobile phone screen tempered glass film

Abstract

The invention relates to the technical field of tempered glass films, and particularly discloses a radiation-proof, hand-sweat-proof, shock-proof and high-transmittance tempered glass film for a mobile phone screen. The radiation-proof, hand-sweat-proof, shock-proof and high-transmittance mobile phone screen tempered glass film comprises tempered glass, an optical anti-reflection layer, a radiation-proof layer, a TPU film layer and a hand-sweat-proof nano coating. The preparation method comprises the following steps: plating an optical anti-reflection layer on a toughened glass substrate, plating silver nanowires on the toughened glass through a high-voltage electrostatic field, sequentially pressurizing and compounding the toughened glass, a TPU (thermoplastic polyurethane) film and an OCA (optical clear adhesive), and spraying a hand sweat prevention nano coating. The radiation-proof layer can effectively shield radiation of unnecessary frequency bands, the TPU film layer can absorb impact force and effectively reduce the screen breakage rate, the hand sweat-proof nano coating enables the film surface to be rapidly hydrophobic and prevents sweat residue, and the optical anti-reflection layer enables the image reduction degree to be higher and has no rainbow lines or glare problems.

Description

Technical Field

[0001] The present invention relates to the technical field of tempered films, and more particularly to a mobile phone screen tempered glass film that is radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent. Background Art

[0002] Mobile phone screen protectors, also known as beauty screen protectors or protective screen protectors, are cold-mounted films that can be applied to mobile phone surfaces, screens, and other tangible objects. They are primarily used to protect phones from accidental cracking, scratches, and falls. As the cost of mobile phone screens increases, mobile phone screen protectors are becoming increasingly popular.

[0003] In the mobile phone film industry, consumers have increasingly higher requirements for mobile phone films. Tempered films are widely used due to their high strength, anti-scratch effect, and high surface smoothness. However, the current tempered films are only scratch-resistant and have low shock and drop resistance. Anti-peep films containing metal coatings or inferior anti-radiation films will block signals and cause network speed to drop. The oleophobic layer of ordinary tempered films has insufficient wear resistance, and its hydrophobic performance drops sharply after 1-2 months of use. Fingerprint residues are obvious, and sweat causes touch failure, and long-term use breeds bacteria. The light transmittance of ordinary tempered films is insufficient, and the light transmittance is even lower after adding blue light and anti-peep functions, resulting in a dark screen and distorted colors. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a mobile phone screen tempered glass film that is radiation-proof, hand-sweat-proof, shock-resistant and highly transparent.

[0005] A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat an optical anti-reflection layer on one side of the tempered glass; S2: Anti-radiation layer: The silver nanowire dispersion is atomized and charged using an electrostatic spray gun, and then adsorbed onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer; S3: TPU film layer: Attach OCA glue to one side of the TPU film layer, and use a roller press for preliminary compounding. Place the tempered glass radiation protection layer in S2 upward and the TPU film OCA glue side downward, and feed it into the laminator for staged pressurization. S4: Anti-hand sweat nano-coating: Spray a silica nanoparticle dispersion on the surface of the tempered glass TPU film layer obtained in S3, spray a perfluorooctyltrichlorosilane solution after drying, and heat cure at 115-125°C for 8-12 minutes to obtain an anti-hand sweat nano-coated tempered glass.

[0006] Preferably, the optical anti-reflection layer in S1 is a TiO2 / MgF2 alternating layer; Preferably, the electrostatic spray gun conditions in S2 are: voltage 60-80 kV, atomizing air pressure 0.3-0.5 MPa, spraying speed 10-20 cm / s, and spraying times 2-3 times.

[0007] Preferably, the silver nanowire dispersion in S2 is prepared by the following method: dissolving silver nanowires in ethanol and ultrasonically dispersing them at 35-45 kHz for 25-35 minutes, wherein the silver nanowires have a diameter of 10-30 nm, a length of 10-20 μm, and a concentration of 0.1-0.3 wt%.

[0008] Preferably, the thickness of the OCA glue in S3 is 0.01-0.05 mm, the thickness of the TPU film is 0.1-0.15 mm, and the light transmittance is ≥90%.

[0009] Preferably, the initial compounding conditions in S3 are: pressure 0.1-0.3 MPa, speed 0.5-1.5 m / min.

[0010] Preferably, the staged pressurization conditions in S3 are as follows: in the first stage, the pressure is 0.1-0.3 MPa and maintained for 25-35 seconds, and the air is exhausted; in the second stage, the pressure is 0.6-0.8 MPa and maintained for 2-4 minutes.

[0011] Preferably, the silica nanoparticle dispersion in S4 is prepared by the following method: dissolving silica nanoparticles in ethanol to a concentration of 2-3 wt %, and ultrasonically dispersing at 35-45 kHz for 25-35 min, wherein the silica nanoparticles have a particle size of 10-20 nm.

[0012] Preferably, the concentration of the perfluorooctyltrichlorosilane solution in S4 is 1-2 wt %.

[0013] In summary, the present invention has the following beneficial effects: The present invention plates an optical anti-reflection layer on the glass surface to reduce the loss of reflected light and achieve higher color reproduction of the picture; uses a silver nanowire coating to only shield unnecessary radiation in a specific frequency band to avoid affecting the signal and touch sensitivity; a flexible TPU buffer film is used as an intermediate layer to absorb the impact of falling and effectively reduce the screen breakage rate; uses a perfluorooctyltrichlorosilane coating that can quickly repel water to prevent sweat residue, and adds silver ions to inhibit bacterial growth and reduce sweat odor. At the same time, a silica nanoparticle dispersion is sprayed to fill the surface micropores to reduce fingerprint adhesion. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the examples, but is not limited thereto. Other features and advantages disclosed in the present invention will become apparent from the following detailed description and examples, which should not be construed as limiting.

[0015] The raw materials used in the embodiments of the present invention are as follows: The tempered glass has a transmittance of 98%, a thickness of 0.5 mm, and a surface roughness of 0.025 μm; silver nanowires were purchased from Shanghai Maoguo Nano Technology Co., Ltd., model MG-NW-S20, with a diameter of 20 nm and a length of 15 μm; OCA glue was purchased from Desco Electronic Technology Co., Ltd., model QDL-SMJ, with a thickness of 0.03 mm; TPU film was purchased from Guangzhou Sanfu Chemical Co., Ltd., brand clear, with a thickness of 0.1 mm; and silica nanoparticles were purchased from Hubei Huifu E-Commerce Co., Ltd., model (HL-150).

[0016] Example 1 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat TiO2 layer → MgF2 layer → TiO2 layer → MgF2 layer on one side of the tempered glass in sequence. The TiO2 layer coating temperature is 250℃ and the working pressure is 4×10 -5 Pa, the deposition rate is 0.4 nm / s, the thickness is 100 nm, the MgF2 layer deposition temperature is 150 °C, and the working pressure is 1×10 -3 Pa, deposition rate 0.3 nm / s, thickness 50 nm; S2: Anti-radiation layer: Use an electrostatic spray gun at a voltage of 60kV, an atomizing pressure of 0.3MPa, and a spraying speed of 10cm / s to atomize and charge the silver nanowire dispersion. Spray twice and adsorb it onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer. S3: TPU film layer: Attach OCA adhesive to one side of the TPU film layer and perform preliminary lamination using a roller press at a pressure of 0.1 MPa and a speed of 0.5 m / min. Place the tempered glass in S2 with the radiation protection layer facing upward and the TPU film OCA adhesive facing downward, and feed it into the laminator for staged pressurization. In the first stage, maintain a pressure of 0.1 MPa for 25 seconds, then expel the air; in the second stage, maintain a pressure of 0.6 MPa for 2 minutes. S4: Anti-hand sweat nano-coating: The surface of the tempered glass TPU film layer obtained in S3 was sprayed with a silica nanoparticle dispersion using an electrostatic spray gun at a voltage of 30 kV and an atomizing pressure of 0.2 MPa. After drying, a 1 wt% perfluorooctyltrichlorosilane solution was sprayed on the surface. The coating was thermally cured at 115°C for 8 minutes to obtain an anti-hand sweat nano-coated tempered glass.

[0017] The silver nanowire dispersion in S2 was prepared by the following method: dissolving the silver nanowires in ethanol and ultrasonically dispersing them at 35 kHz for 25 min, with a concentration of 0.1 wt %.

[0018] The silica nanoparticle dispersion in S4 was prepared by the following method: silica nanoparticles were dissolved in ethanol and ultrasonically dispersed at 35 kHz for 25 min to a concentration of 2 wt %, and ultrasonically dispersed at 35 kHz for 25 min.

[0019] Example 2 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat TiO2 layer → MgF2 layer → TiO2 layer → MgF2 layer on one side of the tempered glass in sequence. The TiO2 layer coating temperature is 250℃ and the working pressure is 4×10 -5 Pa, the deposition rate is 0.4 nm / s, the thickness is 100 nm, the MgF2 layer deposition temperature is 150 °C, and the working pressure is 1×10 -3 Pa, deposition rate 0.3 nm / s, thickness 50 nm; S2: Anti-radiation layer: Use an electrostatic spray gun at a voltage of 70kV, an atomizing pressure of 0.4MPa, and a spraying speed of 15cm / s to atomize and charge the silver nanowire dispersion. Spray twice and adsorb it onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer. S3: TPU film layer: Attach OCA adhesive to one side of the TPU film layer and perform preliminary lamination using a roller press at a pressure of 0.2 MPa and a speed of 1.0 m / min. Place the tempered glass in S2 with the radiation protection layer facing upward and the TPU film OCA adhesive facing downward, and feed it into the laminator for staged pressurization. In the first stage, maintain a pressure of 0.2 MPa for 30 seconds, then expel the air; in the second stage, maintain a pressure of 0.7 MPa for 3 minutes. S4: Anti-hand sweat nano-coating: The surface of the tempered glass TPU film layer obtained in S3 was sprayed with a silica nanoparticle dispersion using an electrostatic spray gun at a voltage of 40 kV and an atomizing pressure of 0.3 MPa. After drying, a 1.5 wt% perfluorooctyltrichlorosilane solution was sprayed on the surface. The film was thermally cured at 120°C for 10 minutes to obtain an anti-hand sweat nano-coating tempered glass.

[0020] The silver nanowire dispersion in S2 was prepared by the following method: dissolving the silver nanowires in ethanol and ultrasonically dispersing them at 40 kHz for 30 min, with a concentration of 0.2 wt %.

[0021] The silica nanoparticle dispersion in S4 was prepared by the following method: silica nanoparticles were dissolved in ethanol to a concentration of 2.5 wt %, and ultrasonically dispersed at 40 kHz for 30 min.

[0022] Example 3 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat TiO2 layer → MgF2 layer → TiO2 layer → MgF2 layer on one side of the tempered glass in sequence. The TiO2 layer coating temperature is 250℃ and the working pressure is 4×10 -5 Pa, the deposition rate is 0.4 nm / s, the thickness is 100 nm, the MgF2 layer deposition temperature is 150 °C, and the working pressure is 1×10 -3 Pa, deposition rate 0.3 nm / s, thickness 50 nm; S2: Anti-radiation layer: Use an electrostatic spray gun at a voltage of 80 kV, an atomizing pressure of 0.5 MPa, and a spraying speed of 20 cm / s to atomize and charge the silver nanowire dispersion. Spray three times and adsorb it onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer. S3: TPU film layer: Attach OCA adhesive to one side of the TPU film layer and perform preliminary lamination using a roller press at a pressure of 0.3 MPa and a speed of 1.5 m / min. Place the tempered glass in S2 with the radiation protection layer facing upward and the TPU film OCA adhesive facing downward, and feed it into the laminator for staged pressurization. The first stage pressure is 0.3 MPa and maintained for 35 seconds, and the air is exhausted. The second stage pressure is 0.8 MPa and maintained for 4 minutes. S4: Anti-hand sweat nano-coating: The surface of the tempered glass TPU film layer obtained in S3 was sprayed with a silica nanoparticle dispersion using an electrostatic spray gun at a voltage of 50 kV and an atomizing pressure of 0.4 MPa. After drying, a 2 wt% perfluorooctyltrichlorosilane solution was sprayed on the surface. The film was thermally cured at 125°C for 12 minutes to obtain an anti-hand sweat nano-coating tempered glass.

[0023] The silver nanowire dispersion in S2 was prepared by the following method: dissolving the silver nanowires in ethanol and ultrasonically dispersing them at 45 kHz for 35 min, with a concentration of 0.3 wt %.

[0024] The silica nanoparticle dispersion in S4 was prepared by the following method: silica nanoparticles were dissolved in ethanol and ultrasonically dispersed at 45 kHz for 35 min to a concentration of 3 wt %, and ultrasonically dispersed at 45 kHz for 35 min.

[0025] Comparative Example 1 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat TiO2 layer → MgF2 layer → TiO2 layer → MgF2 layer on one side of the tempered glass in sequence. The TiO2 layer coating temperature is 250℃ and the working pressure is 4×10 -5 Pa, the deposition rate is 0.4 nm / s, the thickness is 100 nm, the MgF2 layer deposition temperature is 150 °C, and the working pressure is 1×10 -3Pa, deposition rate 0.3 nm / s, thickness 50 nm; S2: TPU film layer: OCA adhesive is laminated to one side of the TPU film layer and initially laminated using a roller press at a pressure of 0.3 MPa and a speed of 1.5 m / min. The tempered glass, TPU film, and OCA adhesive surface obtained in S1 are sequentially fed into the laminator for staged pressurization. The first stage pressure is 0.3 MPa and maintained for 35 seconds, and the air is exhausted. The second stage pressure is 0.8 MPa and maintained for 4 minutes. S3: Anti-hand sweat nano-coating: The tempered glass obtained in S2 was sprayed with a silica nanoparticle dispersion using an electrostatic spray gun at a voltage of 50 kV and an atomizing pressure of 0.4 MPa. After drying, a 2 wt% perfluorooctyltrichlorosilane solution was sprayed on the surface. The glass was thermally cured at 125°C for 12 minutes to obtain an anti-hand sweat nano-coating tempered glass.

[0026] The silica nanoparticle dispersion in S3 was prepared by the following method: dissolving silica nanoparticles in ethanol, ultrasonically dispersing them at 45 kHz for 35 min, and dispersing them at a concentration of 3 wt %, and ultrasonically dispersing them at 45 kHz for 35 min.

[0027] Comparative Example 2 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat TiO2 layer → MgF2 layer → TiO2 layer → MgF2 layer on one side of the tempered glass in sequence. The TiO2 layer coating temperature is 250℃ and the working pressure is 4×10 -5 Pa, the deposition rate is 0.4 nm / s, the thickness is 100 nm, the MgF2 layer deposition temperature is 150 °C, and the working pressure is 1×10 -3 Pa, deposition rate 0.3 nm / s, thickness 50 nm; S2: Anti-radiation layer: Use an electrostatic spray gun at a voltage of 80 kV, an atomizing pressure of 0.5 MPa, and a spraying speed of 20 cm / s to atomize and charge the silver nanowire dispersion. Spray three times and adsorb it onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer. S3: Pressurized lamination: Laminating the OCA adhesive to the bottom layer of the tempered glass, and laminating the two layers by a roller press at a pressure of 0.3 MPa and a speed of 1.5 m / min; S4: Anti-hand sweat nano-coating: The surface of the tempered glass TPU film layer obtained in S3 was sprayed with a silica nanoparticle dispersion using an electrostatic spray gun at a voltage of 50 kV and an atomizing pressure of 0.4 MPa. After drying, a 2 wt% perfluorooctyltrichlorosilane solution was sprayed on the surface. The film was thermally cured at 125°C for 12 minutes to obtain an anti-hand sweat nano-coating tempered glass.

[0028] The silver nanowire dispersion in S2 was prepared by the following method: dissolving the silver nanowires in ethanol and ultrasonically dispersing them at 45 kHz for 35 min, with a concentration of 0.3 wt %.

[0029] The silica nanoparticle dispersion in S4 was prepared by the following method: silica nanoparticles were dissolved in ethanol and ultrasonically dispersed at 45 kHz for 35 min to a concentration of 3 wt %, and ultrasonically dispersed at 45 kHz for 35 min.

[0030] Comparative Example 3 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat TiO2 layer → MgF2 layer → TiO2 layer → MgF2 layer on one side of the tempered glass in sequence. The TiO2 layer coating temperature is 250℃ and the working pressure is 4×10 -5 Pa, the deposition rate is 0.4 nm / s, the thickness is 100 nm, the MgF2 layer deposition temperature is 150 °C, and the working pressure is 1×10 -3 Pa, deposition rate 0.3 nm / s, thickness 50 nm; S2: Anti-radiation layer: Use an electrostatic spray gun at a voltage of 80 kV, an atomizing pressure of 0.5 MPa, and a spraying speed of 20 cm / s to atomize and charge the silver nanowire dispersion. Spray three times and adsorb it onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer. S3: TPU film layer: Attach OCA adhesive to one side of the TPU film layer and perform preliminary lamination using a roller press at a pressure of 0.3 MPa and a speed of 1.5 m / min. Place the tempered glass in S2 with the radiation protection layer facing upward and the TPU film OCA adhesive facing downward, and feed it into the laminator for staged pressurization. The first stage pressure is 0.3 MPa and maintained for 35 seconds, and the air is exhausted. The second stage pressure is 0.8 MPa and maintained for 4 minutes. The silver nanowire dispersion in S2 was prepared by the following method: dissolving the silver nanowires in ethanol and ultrasonically dispersing them at 45 kHz for 35 min, with a concentration of 0.3 wt %.

[0031] Comparative Example 4 A mobile phone screen tempered glass film with radiation protection, hand sweat resistance, shock resistance and high transparency is prepared by the following method: S1: Anti-radiation layer: Use an electrostatic spray gun to atomize and charge the silver nanowire dispersion at a voltage of 80 kV, an atomizing pressure of 0.5 MPa, and a spraying speed of 20 cm / s. Spray three times and adsorb the silver nanowires onto the tempered glass to obtain a tempered glass coated with an anti-radiation layer. S2: TPU film layer: Attach the OCA adhesive to one side of the TPU film layer and perform preliminary compounding using a roller press at a pressure of 0.3 MPa and a speed of 1.5 m / min. Place the optical anti-reflection layer and radiation protection layer in S1 upwards and the TPU film OCA adhesive side downwards, and feed them into the laminator for staged pressurization. The first stage pressure is 0.3 MPa and maintained for 35 seconds, and the air is exhausted. The second stage pressure is 0.8 MPa and maintained for 4 minutes. S3: Anti-hand sweat nano-coating: The tempered glass obtained in S2 was sprayed with a silica nanoparticle dispersion using an electrostatic spray gun at a voltage of 50 kV and an atomizing pressure of 0.4 MPa. After drying, a 2 wt% perfluorooctyltrichlorosilane solution was sprayed on the surface. The glass was thermally cured at 125°C for 12 minutes to obtain an anti-hand sweat nano-coating tempered glass.

[0032] The silver nanowire dispersion in S1 was prepared by the following method: dissolving the silver nanowires in ethanol and ultrasonically dispersing them at 45 kHz for 35 min, with a concentration of 0.3 wt %.

[0033] The silica nanoparticle dispersion in S3 was prepared by the following method: silica nanoparticles were dissolved in ethanol and ultrasonically dispersed at 45 kHz for 35 min to a concentration of 3 wt %, and ultrasonically dispersed at 45 kHz for 35 min.

[0034] Performance Testing 1. Physical performance test Cut the tempered glass films prepared in Experimental Examples 1-3 and Comparative Examples 1-4 into 50*50mm squares and polish the edges to remove burrs. Wipe the surface with isopropyl alcohol to remove fingerprints and dust. Use a Shimadzu UV-2600 spectrophotometer. Scan the entire wavelength range without placing a sample. Set the transmittance reference to 100% and calibrate the instrument error using a standard light-transmitting sheet. Secure the tempered film in the sample holder, ensuring no tilt. Set the wavelength to 380-780nm, with a 5nm step size and a medium scan speed. Collect the fully transmitted light with an integrating sphere and record the transmittance at each wavelength, taking 550nm as the nominal value.

[0035] 2. Earthquake resistance test Drop each of the six surfaces onto the concrete floor three times from a height of 1.5m and observe whether there is any breakage or delamination.

[0036] Use a 50g steel ball to drop freely from a height of 1m to impact the center of the screen and observe whether there is any crack.

[0037] 3. Anti-fingerprint / hydrophobic test After applying fingerprint oil (n-hexadecane), the coverage area is about 5mm 2 , wipe with a dust-free cloth three times, use a digital microscope to photograph the test area, and use image processing software to calculate the total area of ​​the residual area. The residual rate (%) = residual area / initial smearing area * 100%.

[0038] 4. Radiation protection test Electromagnetic Shielding Effectiveness Test (SE) Calibration test: Use VNA to perform full-port calibration, with the frequency range covering the target frequency band; Benchmark test: Set the distance between the transmitter and receiver antennas to 10 meters and record the signal transmission loss (S21 parameter) when no load is applied.

[0039] Film test: Place a test board with tempered film between the transmitter and receiver, ensuring the film completely covers the signal path. Scan the target frequency band: 5G FR2 band 24-48 GHz, and record the S21 parameters.

[0040] Calculate shielding effectiveness: SE (dB) = S21 (without film) - S21 (with film).

[0041] According to the above test method, experimental examples 1-3 and comparative examples 1-4 were tested respectively, and the test results are shown in Table 1 below: Table 1: Test results

[0042] Comparative Example 1 was not sprayed with an anti-radiation coating, Comparative Example 2 was not added with TPU as an intermediate buffer layer, Comparative Example 3 was not sprayed with an anti-hand sweat nano-coating, and Comparative Example 4 was not sprayed with a TiO2 / MgF2 optical anti-reflection layer.

[0043] In summary, the present invention provides a radiation-proof, hand-sweat-proof, shock-resistant and highly transparent tempered glass film for mobile phone screens, which can effectively shield unnecessary radiation in a specific frequency band, quickly repel water, prevent sweat residue, inhibit bacterial growth, reduce sweat odor, and reduce fingerprint adhesion. It can also effectively reduce the screen breakage rate, improve light transmittance, and achieve higher color reproduction of the picture.

[0044] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A mobile phone screen tempered glass film with radiation protection, hand sweat protection, shock resistance and high transparency, characterized by: The radiation-proof, hand-sweat-proof, shock-resistant and highly transparent tempered glass film for mobile phone screens comprises tempered glass, an optical anti-reflection layer, an anti-radiation layer, a TPU film layer and an anti-hand-sweat nano coating.

2. The radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The radiation-proof, hand-sweat-proof, shock-resistant and highly transparent mobile phone screen tempered glass film is prepared by the following method: S1: Optical anti-reflection layer: Use a vacuum coating machine to coat an optical anti-reflection layer on one side of the tempered glass; S2: Anti-radiation layer: The silver nanowire dispersion is atomized and charged using an electrostatic spray gun, and then adsorbed onto the optical anti-reflection layer in S1 to obtain a tempered glass coated with a radiation-proof layer; S3: TPU film layer: Attach OCA glue to one side of the TPU film layer, and use a roller press for preliminary compounding. Place the tempered glass radiation protection layer in S2 upward and the TPU film OCA glue side downward, and feed it into the laminator for staged pressurization. S4: Anti-hand sweat nano-coating: Spray a silica nanoparticle dispersion on the surface of the tempered glass TPU film layer obtained in S3, spray a perfluorooctyltrichlorosilane solution after drying, and heat cure at 115-125°C for 8-12 minutes to obtain an anti-hand sweat nano-coated tempered glass.

3. The radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The optical anti-reflection layer in S1 is a TiO2 / MgF2 alternating layer.

4. The radiation-proof, sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The electrostatic spray gun conditions in S2 are: voltage 60-80 kV, atomizing air pressure 0.3-0.5 MPa, spraying speed 10-20 cm / s, and spraying times 2-3 times.

5. The radiation-proof, sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The silver nanowire dispersion in S2 is prepared by the following method: dissolving silver nanowires in ethanol and ultrasonically dispersing them at 35-45 kHz for 25-35 minutes, wherein the silver nanowires have a diameter of 10-30 nm, a length of 10-20 μm, and a concentration of 0.1-0.3 wt%.

6. The radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The thickness of the OCA glue in S3 is 0.01-0.05 mm, the thickness of the TPU film is 0.1-0.15 mm, and the transmittance is ≥90%.

7. The radiation-proof, sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The initial compounding conditions in S3 are: pressure 0.1-0.3 MPa, speed 0.5-1.5 m / min.

8. The radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The staged pressurization conditions in S3 are as follows: in the first stage, the pressure is 0.1-0.3 MPa and maintained for 25-35 seconds, and the air is exhausted; in the second stage, the pressure is 0.6-0.8 MPa and maintained for 2-4 minutes.

9. The radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The silica nanoparticle dispersion in S4 is prepared by the following method: dissolving silica nanoparticles in ethanol to a concentration of 2-3 wt %, and ultrasonically dispersing at 35-45 kHz for 25-35 minutes, wherein the silica nanoparticles have a particle size of 10-20 nm.

10. The radiation-proof, hand-sweat-proof, shock-resistant, and highly transparent tempered glass film for mobile phone screens according to claim 1, characterized in that: The concentration of the perfluorooctyltrichlorosilane solution in S4 is 1-2 wt %.

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