CN114395340A - Antireflection functional film for vehicle-mounted display screen and preparation method thereof - Google Patents
Antireflection functional film for vehicle-mounted display screen and preparation method thereof Download PDFInfo
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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Abstract
The invention relates to the technical field of glass panels of electronic display devices, in particular to an antireflection functional film for a vehicle-mounted display screen, which comprises a transparent substrate, wherein an isolation layer, an antireflection functional layer, a refraction enhancement layer and a protective layer are sequentially fixed on one side of the transparent substrate; the antireflection functional layer comprises a first antireflection layer and a second antireflection layer, wherein the first antireflection layer is silicon dioxide containing nano silicon crystal grains, the second antireflection layer is a porous film layer, and the preparation method of the second antireflection layer comprises the following steps: firstly, preparing a solution for spraying a second antireflection layer, then adding a certain amount of volatile solvent, spraying the second antireflection layer solution containing the volatile solvent onto the first antireflection layer, and carrying out heat treatment to obtain a textured film layer with a microporous structure on the surface; the invention also provides a preparation method of the antireflection functional film for the vehicle-mounted display screen. The invention has high firmness, good antireflection effect, wide range of service wavelength and strong practicability.
Description
Technical Field
The invention relates to the technical field of glass panels of electronic display devices, in particular to an antireflection functional film for a vehicle-mounted display screen and a preparation method thereof.
Background
In many application fields, an antireflection film is indispensable, otherwise, the application requirements cannot be met. The main function of the reflection function film is to reduce or eliminate the reflection light of optical surfaces such as lenses, prisms, plane mirrors and the like, thereby increasing the light transmission amount of the elements, exerting the optimal performance of each element and achieving the corresponding technical goal. The antireflection functional film is an optical film with the widest application and the largest production, so that the antireflection functional film is still an important research subject in the optical film technology.
However, light to be anti-reflected is not monochromatic but has a certain bandwidth, and an anti-reflection film only has a complete anti-reflection effect on monochromatic light of a certain wavelength, so that the application performance is limited. For example, in the prior art, a glass substrate/titanium oxide-cerium oxide film/porous silica film, or a porous silica film/titanium oxide-cerium oxide film/glass substrate/titanium oxide-cerium oxide film/porous silica film is disclosed in "dual-functional coated glass with visible light antireflection and ultraviolet ray cutoff and a preparation method thereof" of patent No. CN101157522A, that is, a titanium oxide-cerium oxide film and a porous silica film are arranged on two sides or one side of a glass substrate, and the structure thereof is single, and the antireflection effect achieved is only useful for monochromatic light of a few wavelengths; for another example, in "an antifogging and antireflection visible light dual-function coated glass and a preparation method thereof" of patent No. CN105859153B, a structure of a hydrophilic film layer/an isolation layer/glass/an isolation layer/an antireflection visible light film layer is disclosed, which has antireflection and antireflection effects only on the antireflection visible light film layer, and more non-functional layers (i.e., non-antireflection functional layers) are provided, so that the preparation is complicated, the production cost is increased, the refractive index is increased by only 1.5-3.5%, and the performance needs to be further improved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an antireflection functional film for a vehicle-mounted display screen, which has a simple structure, a good antireflection effect and a wide application range. In order to realize the purpose of the invention, the following technical scheme is adopted:
an antireflection functional film for a vehicle-mounted display screen comprises a transparent substrate, wherein an isolation layer, an antireflection functional layer, a refraction enhancement layer and a protective layer are sequentially fixed on any one side of the transparent substrate;
the isolation layer is a silicon dioxide layer, the antireflection functional layer comprises a first antireflection layer and a second antireflection layer, the refractive index of the refraction enhancement layer is greater than that of the isolation layer, and the protective layer is one of a polyethylene protective film or a polyethylene terephthalate protective film;
the first antireflection layer is made of silicon dioxide SiOx, wherein x is more than or equal to 1 and less than or equal to 2, and nano silicon crystal grains are uniformly dispersed in the first antireflection layer; the second antireflection layer is a porous film layer, and the preparation method of the second antireflection layer comprises the following steps:
(a) preparing a solution for spraying the second antireflection layer;
(b) adding an amount of a volatile solvent to the second antireflective layer solution configured in step (a);
(c) spraying the second anti-reflective layer solution containing the volatile solvent of step (b) onto the first anti-reflective layer;
(d) and heating the sprayed second antireflection layer to 100-150 ℃ for treatment to obtain the textured film layer with the microporous structure on the surface.
Preferably, the grain size of the nano silicon crystal grains in the first antireflection layer is 10-30nm, and the density of the nano silicon crystal grainsIs 1 × 1012-1×1016Per cm3。
Preferably, the material of the second anti-reflection layer is one of zinc oxide, aluminum-doped zinc oxide or indium-doped zinc oxide.
Preferably, the second antireflection layer has a pore diameter of 60 to 1000nm and a porosity of 25 to 45%.
Preferably, the refraction enhancement layer is one or two of titanium oxide, antimony doped tin oxide and tin oxide composite zinc oxide.
Preferably, the transparent substrate is made of a PET material.
Preferably, one side of the transparent substrate opposite to the isolation layer is provided with a transparent adhesive layer, and the transparent adhesive layer is made of acrylic adhesive material.
In order to achieve the purpose, the invention also provides a preparation method of the antireflection functional film for the vehicle-mounted display screen, which is used for producing the antireflection functional film for the vehicle-mounted display screen.
Preferably, the method comprises the following steps:
(1) pretreatment: taking a transparent substrate, cleaning for 3-5 times by distilled water and absolute ethyl alcohol, and heating to 200-;
(2) preparing an isolation layer: spraying a spraying liquid containing silicon dioxide on one surface of the obtained transparent substrate, wherein the spraying included angle is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, the spraying time is 8-15s, and then carrying out heat treatment at 80-100 ℃ for 5-10min to obtain an isolating layer with the thickness of 10-500 nm;
(3) preparing an antireflection functional layer: sequentially preparing a first antireflection layer and a second antireflection layer on the isolation layer obtained in the step to obtain an antireflection functional layer with the thickness of 100-1200 nm;
(4) preparation of the refraction enhancement layer: spraying one or two of titanium oxide, antimony-doped tin oxide and tin oxide composite zinc oxide spraying liquid onto the obtained antireflection functional layer, wherein the spraying included angle is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, the spraying time is 5-10s, and then carrying out heat treatment at 80-100 ℃ for 5-10min to obtain a refraction enhancement layer with the thickness of 30-120 nm;
(5) preparing a protective layer: spraying polyethylene or polyethylene terephthalate spraying liquid on the obtained refraction enhancement layer, wherein the spraying included angle is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, the spraying time is 15-20s, and then carrying out heat treatment at 80-100 ℃ for 5-10min to obtain a protective layer with the thickness of 120-1200 nm;
(6) preparing a transparent adhesive layer: and arranging a transparent adhesive layer on the surface of the transparent substrate opposite to the isolation layer to obtain the final antireflection functional film for the vehicle-mounted display screen.
Preferably, the step of preparing the antireflection functional layer specifically includes the following steps:
(301) preparing a first antireflection layer: depositing silicon dioxide containing silicon nanoparticles on the isolation layer by adopting a chemical deposition method, namely controlling the temperature in a plasma enhanced chemical vapor deposition vacuum deposition chamber to be 280-300 ℃, vacuumizing to 10-12Pa, and starting a radio frequency power supply to enable a silicon-rich silicon dioxide film to grow on the isolation layer to obtain a first antireflection layer;
(302) preparing a second antireflection layer: firstly, preparing a solution for spraying a second antireflection layer, then adding a certain amount of volatile solvent into the prepared solution of the second antireflection layer, spraying the solution of the second antireflection layer containing the volatile solvent onto the first antireflection layer obtained in the step, and heating the sprayed second antireflection layer to 100-150 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface, namely the second antireflection layer; the spraying included angle in the step is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, and the spraying time is 5-10 s.
Compared with the prior art, the invention has the beneficial effects that: the anti-reflection functional film for the vehicle-mounted display screen has the advantages that the isolation layer, the anti-reflection functional layer and the refraction enhancement layer are designed, the isolation layer, namely the silicon dioxide layer, can increase the firmness and the anti-friction capability of the anti-reflection functional film for the vehicle-mounted display screen, the performance quality of the anti-reflection functional film is an important index for determining the anti-reflection functional film to a certain extent, in addition, the anti-reflection functional film can act on light in a wider wavelength through the multi-layer effect of anti-reflection and anti-reflection, and the functionality of the film is enhanced; the anti-reflection function layer comprises a first anti-reflection layer and a second anti-reflection layer which are different in type, namely the first anti-reflection layer exerts an anti-reflection effect through particles contained inside the first anti-reflection layer, the second anti-reflection layer exerts an anti-reflection effect through a porous structure formed on the surface of the second anti-reflection layer, the anti-reflection effect is good, the anti-reflection performance is enhanced due to the mutual combination of the first anti-reflection layer and the second anti-reflection layer, the structure is simple to prepare, convenient to operate, beneficial to production and popularization, and high in practicability.
Drawings
FIG. 1 is a schematic structural diagram of an antireflection functional film for a vehicle-mounted display screen according to the present invention;
FIG. 2 is a flow chart of a method for preparing an antireflection functional film for a vehicle-mounted display screen according to the present invention;
fig. 3 is a flowchart of manufacturing an antireflection functional layer in the present invention;
fig. 4 is a flow chart of the present invention for preparing a second anti-reflective layer;
in the figure, 1-a transparent substrate, 2-an isolation layer, 3-an antireflection functional layer, 31-a first antireflection layer, 32-a second antireflection layer, 4-a refraction enhancement layer, 5-a protection layer, and 6-a transparent adhesive layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Detailed description of the preferred embodiment 1
Fig. 1 is a schematic structural diagram of an antireflection functional film for a vehicle-mounted display screen according to the present invention, and it can be seen that the antireflection functional film for a vehicle-mounted display screen according to the present invention includes a transparent substrate 1 made of PET, and an isolation layer 2, an antireflection functional layer 3, a refraction enhancement layer 4, and a protective layer 5 are sequentially fixed on any one side of the transparent substrate 1; the other side is provided with a transparent adhesive layer 6 made of acrylic adhesive material.
The isolation layer 2 is a silicon dioxide layer, the antireflection functional layer 3 comprises a first antireflection layer 31 and a second antireflection layer 32, the refractive index of the refraction enhancement layer 4 is greater than that of the isolation layer 2, and the material of the refraction enhancement layer is titanium oxide; the protective layer 5 is a polyethylene protective film;
the first anti-reflection layer 31 is made of silicon dioxide SiOx, wherein x is greater than or equal to 1 and less than or equal to 2, and nano silicon grains with the grain size of 10nm are uniformly dispersed in the first anti-reflection layer 31, and the density of the nano silicon grains is 1 × 1012Per cm3(ii) a The second antireflection layer 32 is a porous film layer made of zinc oxide, the surface of the second antireflection layer 32 is a microporous textured film layer with a pore diameter of 60nm, the porosity of the second antireflection layer 32 is 25%, and the preparation method of the second antireflection layer 32 comprises the following steps: firstly, preparing a solution for spraying the second antireflection layer 32, namely preparing zinc oxide with a certain concentration, then adding a certain amount of ethanol into the prepared solution of the second antireflection layer 32, then spraying the solution of the second antireflection layer 32 containing ethanol onto the first antireflection layer 31, and finally heating the sprayed second antireflection layer 32 to 100 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface.
Fig. 2 is a flowchart of a method for manufacturing an antireflection functional film for a vehicle-mounted display screen according to the present invention, and referring to fig. 3 and 4, it can be seen that a method for manufacturing the antireflection functional film for a vehicle-mounted display screen according to the present invention includes the following steps:
step S1: pretreatment: a piece of transparent substrate 1 was taken, washed 3 times with distilled water and absolute ethanol, and heated to 200 ℃ to obtain a clean transparent substrate 1.
Step S2: preparation of the isolation layer 2: spraying a spraying liquid containing silicon dioxide on one surface of the obtained transparent substrate, wherein the spraying included angle is 30 degrees, the spraying pressure is 0.5MPa, the spraying time is 8s, and then carrying out heat treatment at 80 ℃ for 10min to obtain the isolation layer 2 with the thickness of 10 nm.
Step S3: preparation of the antireflection functional layer 3: by sequentially preparing the first antireflection layer 31 and the second antireflection layer 32 on the separation layer 2 obtained in the above steps, an antireflection functional layer having a thickness of 100nm is obtained.
In the step, firstly, silicon dioxide containing silicon nano-crystal grains is deposited on the isolation layer 2 by adopting a chemical deposition method, namely, the temperature in a plasma enhanced chemical vapor deposition vacuum deposition chamber is controlled to be 280 ℃, the vacuum pumping is carried out to 10Pa, a radio frequency power supply is started, so that a silicon-rich silicon dioxide film grows on the isolation layer 2, and a first antireflection layer 31 is obtained; then preparing a solution for spraying the second antireflection layer 32, adding a certain amount of ethanol into the prepared solution of the second antireflection layer 32, spraying the solution of the second antireflection layer 32 containing ethanol onto the first antireflection layer 31 obtained in the above step, and heating the sprayed second antireflection layer 32 to 100 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface, namely the second antireflection layer 32; the spraying included angle in the step is 30 degrees, the spraying pressure is 0.5MPa, and the spraying time is 10 s;
step S4: preparation of the refraction enhancing layer 4: and spraying titanium oxide spraying liquid on the obtained antireflection functional layer 3, wherein the spraying included angle is 30 degrees, the spraying pressure is 0.5MPa, the spraying time is 10s, and then carrying out heat treatment at 80 ℃ for 10min to obtain the refraction enhancement layer 4 with the thickness of 30 nm.
Step S5: preparation of the protective layer 5: and spraying polyethylene spraying liquid on the obtained antireflection functional layer 3, wherein the spraying included angle is 30 degrees, the spraying pressure is 0.5MPa, the spraying time is 20s, and then carrying out heat treatment at 80 ℃ for 10min to obtain the protective layer 5 with the thickness of 120 nm.
Step S6: preparation of the transparent adhesive layer 6: the transparent adhesive layer 6 is arranged on one side, opposite to the isolation layer 2, of the transparent substrate 1, a final antireflection functional film for the vehicle-mounted display screen is obtained, the antireflection functional film is applied to the vehicle-mounted display screen, correlation performance detection is carried out, the film hardness is 4.5H, the visible light transmittance is 98.5%, the near infrared ray reflectance is 70%, and the physical and chemical properties of the obtained vehicle-mounted display screen meet the national standard specified in the coated glass physical and chemical property test standard.
Specific example 2
Fig. 1 is a schematic structural diagram of an antireflection functional film for a vehicle-mounted display screen according to the present invention, and it can be seen that the antireflection functional film for a vehicle-mounted display screen according to the present invention includes a transparent substrate 1 made of PET, and an isolation layer 2, an antireflection functional layer 3, a refraction enhancement layer 4, and a protective layer 5 are sequentially fixed on any one side of the transparent substrate 1; the other side is provided with a transparent adhesive layer 6 made of acrylic adhesive material.
In the invention, the isolation layer 2 is a silicon dioxide layer, the antireflection functional layer 3 comprises a first antireflection layer 31 and a second antireflection layer 32, the refractive index of the refraction enhancement layer 4 is greater than that of the isolation layer 2, and the material of the refraction enhancement layer is antimony doped tin oxide; the protective layer 5 is a polyethylene glycol terephthalate protective film;
wherein the first anti-reflection layer 31 is made of silicon dioxide SiOx, wherein x is greater than or equal to 1 and less than or equal to 2, and nano silicon grains with the grain size of 30nm are uniformly dispersed in the first anti-reflection layer 31, and the density of the nano silicon grains is 1 × 1016Per cm3(ii) a The second antireflection layer 32 is a porous film layer made of aluminum-doped zinc oxide, the surface of the second antireflection layer 32 is a microporous textured film layer with a pore size of 1000nm, the porosity of the second antireflection layer 32 is 45%, and the preparation method of the second antireflection layer 32 comprises the following steps: firstly, preparing a solution for spraying the second antireflection layer 32, namely preparing aluminum-doped zinc oxide with a certain concentration, then adding a certain amount of ethanol into the prepared solution of the second antireflection layer 32, spraying the solution of the second antireflection layer 32 containing ethanol onto the first antireflection layer 31, and finally heating the sprayed second antireflection layer 32 to 150 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface.
Fig. 2 is a flowchart of a method for manufacturing an antireflection functional film for a vehicle-mounted display screen according to the present invention, and referring to fig. 3 and 4, it can be seen that a method for manufacturing the antireflection functional film for a vehicle-mounted display screen according to the present invention includes the following steps:
step S1: pretreatment: a piece of transparent substrate 1 was taken, washed 5 times by distilled water and absolute ethyl alcohol, and heated to 500 ℃ to obtain a clean transparent substrate 1.
Step S2: preparation of the isolation layer 2: spraying a spraying liquid containing silicon dioxide on one surface of the obtained transparent substrate, wherein the spraying included angle is 120 degrees, the spraying pressure is 0.8MPa, the spraying time is 8s, and then carrying out heat treatment at 100 ℃ for 5min to obtain the isolating layer 2 with the thickness of 500 nm.
Step S3: preparation of the antireflection functional layer 3: by sequentially preparing the first antireflection layer 31 and the second antireflection layer 32 on the separation layer 2 obtained in the above steps, an antireflection functional layer having a thickness of 1200nm is obtained.
In the step, firstly, silicon dioxide containing silicon nano-crystal grains is deposited on the isolation layer 2 by adopting a chemical deposition method, namely, the temperature in the plasma enhanced chemical vapor deposition vacuum deposition chamber is controlled to be 300 ℃, the vacuum pumping is carried out to 12Pa, a radio frequency power supply is started, so that a silicon-rich silicon dioxide film grows on the isolation layer 2, and a first antireflection layer 31 is obtained; then preparing a solution for spraying the second antireflection layer 32, adding a certain amount of ethanol into the prepared solution of the second antireflection layer 32, spraying the solution of the second antireflection layer 32 containing ethanol onto the first antireflection layer 31 obtained in the above step, and heating the sprayed second antireflection layer 32 to 150 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface, namely the second antireflection layer 32; the included angle of spraying in the step is 120 degrees, the spraying pressure is 0.8MPa, and the spraying time is 5 s;
step S4: preparation of the refraction enhancing layer 4: and spraying antimony-doped tin oxide spraying liquid onto the obtained antireflection functional layer 3, wherein the spraying included angle is 120 degrees, the spraying pressure is 0.8MPa, the spraying time is 5s, and then carrying out heat treatment at 100 ℃ for 5min to obtain a refraction enhancement layer 4 with the thickness of 120 nm.
Step S5: preparation of the protective layer 5: and (3) spraying polyethylene terephthalate spraying liquid on the obtained antireflection functional layer 3, wherein the spraying included angle is 120 degrees, the spraying pressure is 0.8MPa, the spraying time is 15s, and then carrying out heat treatment at 100 ℃ for 5min to obtain the protective layer 5 with the thickness of 1200 nm.
Step S6: preparation of the transparent adhesive layer 6: the transparent adhesive layer 6 is arranged on one side, opposite to the isolation layer 2, of the transparent substrate 1, a final antireflection functional film for the vehicle-mounted display screen is obtained, the antireflection functional film is applied to the vehicle-mounted display screen, correlation performance detection is carried out, the film hardness is 4.6H, the visible light transmittance is 98.8%, the near infrared ray reflectance is 68%, and the physical and chemical properties of the obtained vehicle-mounted display screen meet national standards specified in the physical and chemical property test standards of coated glass.
Specific example 3
Fig. 1 is a schematic structural diagram of an antireflection functional film for a vehicle-mounted display screen according to the present invention, and it can be seen that the antireflection functional film for a vehicle-mounted display screen according to the present invention includes a transparent substrate 1 made of PET, and an isolation layer 2, an antireflection functional layer 3, a refraction enhancement layer 4, and a protective layer 5 are sequentially fixed on any one side of the transparent substrate 1; the other side is provided with a transparent adhesive layer 6 made of acrylic adhesive material.
The isolation layer 2 is a silicon dioxide layer, the antireflection functional layer 3 comprises a first antireflection layer 31 and a second antireflection layer 32, the refractive index of the refraction enhancement layer 4 is greater than that of the isolation layer 2, and the material of the refraction enhancement layer is titanium oxide and tin oxide composite zinc oxide; the protective layer 5 is a polyethylene protective film;
wherein the first anti-reflection layer 31 is made of silicon dioxide SiOx, wherein x is greater than or equal to 1 and less than or equal to 2, and nano silicon grains with the grain size of 20nm are uniformly dispersed in the first anti-reflection layer 31, and the density of the nano silicon grains is 1 × 1014Per cm3(ii) a The second antireflection layer 32 is a porous film layer made of indium-doped zinc oxide, the surface of the second antireflection layer 32 is a microporous textured film layer with an aperture of 800nm, the porosity of the second antireflection layer 32 is 35%, and the preparation method of the second antireflection layer 32 comprises the following steps: firstly, preparing a solution for spraying the second antireflection layer 32, namely preparing an indium-doped zinc oxide solution with a certain concentration, then adding a certain amount of ethanol into the prepared solution of the second antireflection layer 32, then spraying the solution of the second antireflection layer 32 containing ethanol onto the first antireflection layer 31, and finally heating the sprayed second antireflection layer 32 to 120 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface.
Fig. 2 is a flowchart of a method for manufacturing an antireflection functional film for a vehicle-mounted display screen according to the present invention, and referring to fig. 3 and 4, it can be seen that a method for manufacturing the antireflection functional film for a vehicle-mounted display screen according to the present invention includes the following steps:
step S1: pretreatment: a piece of transparent substrate 1 was taken, washed 4 times by distilled water and absolute ethyl alcohol, and heated to 350 ℃ to obtain a clean transparent substrate 1.
Step S2: preparation of the isolation layer 2: spraying a spraying liquid containing silicon dioxide on one surface of the obtained transparent substrate, wherein the spraying included angle is 60 degrees, the spraying pressure is 0.6MPa, the spraying time is 12s, and then carrying out heat treatment at 90 ℃ for 8min to obtain the isolation layer 2 with the thickness of 200 nm.
Step S3: preparation of the antireflection functional layer 3: by sequentially preparing the first antireflection layer 31 and the second antireflection layer 32 on the isolation layer 2 obtained in the above steps, an antireflection functional layer having a thickness of 800nm is obtained.
In the step, firstly, silicon dioxide containing silicon nano-crystal grains is deposited on the isolation layer 2 by adopting a chemical deposition method, namely, the temperature in a plasma enhanced chemical vapor deposition vacuum deposition chamber is controlled to be 290 ℃, the vacuum pumping is carried out to 10Pa, a radio frequency power supply is started, so that a silicon-rich silicon dioxide film grows on the isolation layer 2, and a first antireflection layer 31 is obtained; then preparing a solution for spraying the second antireflection layer 32, adding a certain amount of ethanol into the prepared solution of the second antireflection layer 32, spraying the solution of the second antireflection layer 32 containing ethanol onto the first antireflection layer 31 obtained in the above step, and heating the sprayed second antireflection layer 32 to 120 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface, namely the second antireflection layer 32; the included angle of spraying in the step is 60 degrees, the spraying pressure is 0.6MPa, and the spraying time is 8 s;
step S4: preparation of the refraction enhancing layer 4: and spraying titanium oxide and tin oxide composite zinc oxide spraying liquid on the obtained antireflection functional layer 3, wherein the spraying included angle is 60 degrees, the spraying pressure is 0.6MPa, the spraying time is 8s, and then carrying out heat treatment at 90 ℃ for 8min to obtain a refraction enhancement layer 4 with the thickness of 100 nm.
Step S5: preparation of the protective layer 5: and spraying polyethylene spraying liquid on the obtained antireflection functional layer 3, wherein the spraying included angle is 60 degrees, the spraying pressure is 0.6MPa, the spraying time is 18s, and then carrying out heat treatment at 890 ℃ for 8min to obtain the protective layer 5 with the thickness of 900 nm.
Step S6: preparation of the transparent adhesive layer 6: the transparent adhesive layer 6 is arranged on one side, opposite to the isolation layer 2, of the transparent substrate 1, a final antireflection functional film for the vehicle-mounted display screen is obtained, the antireflection functional film is applied to the vehicle-mounted display screen, correlation performance detection is carried out, the film hardness is 4.5H, the visible light transmittance is 97.8%, the near infrared ray reflectance is 72%, and the physical and chemical properties of the obtained vehicle-mounted display screen meet national standards specified in the physical and chemical property test standards of coated glass.
As can be seen from the above embodiments of the present invention, the antireflection functional film for a vehicle-mounted display screen according to the present invention enhances the visible light transmittance, and reduces the near infrared reflectance, by designing the isolation layer, the antireflection functional layer, and the refraction enhancement layer, and providing the isolation layer, i.e., the silicon dioxide layer, the firmness and the anti-friction capability of the antireflection functional film for a vehicle-mounted display screen can be increased, the performance is an important index for determining the antireflection functional film to a certain extent, and in addition, by the multi-layer effect of antireflection and anti-reflection, light within a wider wavelength can be acted, and the functionality of the film is enhanced; the anti-reflection function layer comprises a first anti-reflection layer and a second anti-reflection layer which are different in type, namely the first anti-reflection layer exerts an anti-reflection effect through particles contained inside the first anti-reflection layer, the second anti-reflection layer exerts an anti-reflection effect through a porous structure formed on the surface of the second anti-reflection layer, the anti-reflection effect is good, the anti-reflection performance is enhanced due to the mutual combination of the first anti-reflection layer and the second anti-reflection layer, the structure is simple to prepare, convenient to operate, beneficial to production and popularization, and high in practicability.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the changes or modifications within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an on-vehicle display screen is with antireflection function membrane which characterized in that: the anti-reflection coating comprises a transparent substrate (1), wherein an isolation layer (2), an anti-reflection functional layer (3), a refraction enhancement layer (4) and a protective layer (5) are sequentially fixed on any one side of the transparent substrate (1);
the isolation layer (2) is a silicon dioxide layer, the antireflection functional layer (3) comprises a first antireflection layer (31) and a second antireflection layer (32), the refractive index of the refraction enhancement layer (4) is greater than that of the isolation layer (2), and the protective layer (5) is one of a polyethylene protective film or a polyethylene terephthalate protective film;
the first antireflection layer (31) is made of silicon dioxide SiOx, wherein x is more than or equal to 1 and less than or equal to 2, and nano silicon grains are uniformly dispersed in the first antireflection layer (31); the second antireflection layer (32) is a porous film layer, and the preparation method of the second antireflection layer (32) is as follows:
(a) preparing a solution for spraying the second antireflection layer;
(b) adding an amount of a volatile solvent to the second antireflective layer solution configured in step (a);
(c) spraying the second anti-reflective layer solution containing the volatile solvent of step (b) onto the first anti-reflective layer (31);
(d) and heating the sprayed second antireflection layer (32) to 100-150 ℃ for treatment to obtain the textured film layer with the microporous structure on the surface.
2. The antireflection functional film for an on-vehicle display screen according to claim 1, characterized in that: the grain size of the nano silicon crystal grains in the first antireflection layer (31) is 10-30nm, and the density of the nano silicon crystal grains is 1 multiplied by 1012-1×1016Per cm3。
3. The antireflection functional film for an on-vehicle display screen according to claim 1, characterized in that: the material of the second antireflection layer (32) is one of zinc oxide, aluminum-doped zinc oxide or indium-doped zinc oxide.
4. The antireflection functional film for an on-vehicle display screen according to claim 1 or 3, characterized in that: the pore diameter of the micropores of the second antireflection layer (32) is 60-1000nm, and the porosity is 25-45%.
5. The antireflection functional film for an on-vehicle display screen according to claim 1, characterized in that: the refraction enhancement layer (4) is one or two of titanium oxide, antimony doped tin oxide and tin oxide composite zinc oxide.
6. The antireflection functional film for an on-vehicle display screen according to claim 1, characterized in that: the transparent substrate (1) is made of PET materials.
7. The antireflection functional film for an on-vehicle display screen according to claim 1, characterized in that: one side of the transparent substrate (1) opposite to the isolation layer (2) is provided with a transparent adhesive layer (6), and the transparent adhesive layer (6) is made of acrylic adhesive material.
8. A preparation method of an antireflection functional film for a vehicle-mounted display screen is characterized by comprising the following steps: the antireflection functional film for the vehicle-mounted display screen is used for producing the antireflection functional film for the vehicle-mounted display screen as claimed in any one of claims 1 to 7.
9. The method for manufacturing an antireflection functional film for an on-vehicle display screen according to claim 8, characterized in that: the method comprises the following steps:
(1) pretreatment: taking a transparent substrate (1), cleaning for 3-5 times by distilled water and absolute ethyl alcohol, and heating to 200-500 ℃ to obtain a clean transparent substrate;
(2) preparation of the isolation layer (2): spraying a spraying liquid containing silicon dioxide on one surface of the obtained transparent substrate, wherein the spraying included angle is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, the spraying time is 8-15s, and then carrying out heat treatment at 80-100 ℃ for 5-10min to obtain an isolating layer (2) with the thickness of 10-500 nm;
(3) preparation of the antireflection functional layer (3): sequentially preparing a first antireflection layer (31) and a second antireflection layer (32) on the isolation layer (2) obtained in the step to obtain an antireflection functional layer with the thickness of 100-1200 nm;
(4) preparation of the refraction enhancing layer (4): spraying one or two of titanium oxide, antimony-doped tin oxide and tin oxide composite zinc oxide spraying liquid on the obtained antireflection functional layer (3), wherein the spraying included angle is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, the spraying time is 5-10s, and then carrying out heat treatment at 80-100 ℃ for 5-10min to obtain a refraction enhancement layer (4) with the thickness of 30-120 nm;
(5) preparing a protective layer (5): spraying polyethylene or polyethylene terephthalate spraying liquid on the obtained refraction enhancement layer (4) at an included angle of 30-120 degrees, at a spraying pressure of 0.5-0.8MPa for 15-20s, and then carrying out heat treatment at 80-100 ℃ for 5-10min to obtain a protective layer (5) with the thickness of 120-1200 nm;
(6) preparation of the transparent adhesive layer (6): and arranging a transparent adhesive layer (6) on one surface of the transparent substrate (1) opposite to the isolation layer (2) to obtain the final antireflection functional film for the vehicle-mounted display screen.
10. The method for manufacturing an antireflection functional film for an on-vehicle display screen according to claim 9, characterized in that: the preparation of the antireflection functional layer in the step (3) specifically comprises the following steps:
(301) -preparing a first anti-reflection layer (31): depositing silicon dioxide containing silicon nano-particles on the isolating layer (2) by adopting a chemical deposition method, namely controlling the temperature in a plasma enhanced chemical vapor deposition vacuum deposition chamber to be 280-300 ℃, vacuumizing to 10-12Pa, and starting a radio frequency power supply to enable a silicon-rich silicon dioxide film to grow on the isolating layer (2) to obtain a first antireflection layer (31);
(302) -preparing a second antireflection layer (32): firstly, preparing a solution for spraying a second antireflection layer (32), then adding a certain amount of volatile solvent into the prepared solution of the second antireflection layer (32), spraying the solution of the second antireflection layer (32) containing the volatile solvent onto the first antireflection layer (31) obtained in the above step, and heating the sprayed second antireflection layer (32) to 100-150 ℃ for treatment to obtain a textured film layer with a microporous structure on the surface, namely the second antireflection layer (32); the spraying included angle in the step is 30-120 degrees, the spraying pressure is 0.5-0.8MPa, and the spraying time is 5-10 s.
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