Infrared-resistant film and preparation method thereof, display

Abstract

The present application relates to an anti-infrared film, a preparation method thereof, and a display, wherein the anti-infrared film comprises a substrate, a hardening coating and an anti-infrared coating, the hardening coating and the anti-infrared coating are respectively arranged on two opposite surfaces of the substrate; and the preparation raw materials of the anti-infrared coating comprise the following components in terms of mass fraction: 15-40 parts of an acrylic resin; 1-5 parts of a first initiator; 10-30 parts of a metal oxide; 3-20 parts of a dispersing agent; and 10-40 parts of a first organic solvent. The anti-infrared film has high light transmittance and good anti-infrared performance simultaneously due to the synergistic effect between the coating components and between the coatings.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display technology, in particular to an anti-infrared film, a preparation method thereof and a display. BACKGROUND

[0002] The head up display (HUD) is an early flight auxiliary instrument used in aircraft. In recent years, this technology has been applied to vehicle head-up displays. The main function of the HUD is to project important driving data to the front of the driver, thereby reducing or avoiding the driver's behavior of looking down at the instrument during driving, especially when the driver needs to deal with complex road conditions without looking down and focusing on the road surface, which can enhance the driver's control of the road conditions and effectively reduce the risk of accidents.

[0003] The protective film can effectively prevent friction damage of the vehicle head-up display during use, as well as prevent dust, rainwater and other pollution. However, the traditional protective film cannot simultaneously consider light transmittance and anti-infrared properties.

[0004] Therefore, it is of great significance to provide an anti-infrared film with high light transmittance and good anti-infrared performance. SUMMARY

[0005] Based on this, the present application provides an anti-infrared film with high light transmittance and good anti-infrared performance, as well as a preparation method thereof and a display.

[0006] The technical solutions of the present application to solve the above technical problems are as follows.

[0007] An anti-infrared film, comprising a substrate, a hardening coating and an anti-infrared coating, the hardening coating and the anti-infrared coating are respectively arranged on the two opposite surfaces of the substrate.

[0008] The preparation raw materials of the anti-infrared coating include the following components in mass fraction:

[0009]

[0010] In some embodiments, the metal oxide in the anti-infrared film is selected from at least one of tungsten oxide, arsenic trioxide and indium tin oxide.

[0011] In some embodiments, the dispersing agent in the anti-infrared film is selected from at least one of BYK-110, BYK-2150 and BYK-163.

[0012] In some embodiments, the mass ratio of the metal oxide to the acrylic resin in the anti-infrared film is (0.25-2):1.

[0013] In some embodiments, the first organic solvent in the anti-infrared film is selected from at least one of EAC, MEK and MIBK.

[0014] In some embodiments, the preparation raw material of the hard coating in the anti-infrared film includes the following components by mass fraction:

[0015]

[0016] In some embodiments, the inorganic particles in the silane coupling agent modified inorganic particles in the anti-infrared film are at least one of silica and alumina.

[0017] In some embodiments, the silane coupling agent in the anti-infrared film is selected from at least one of A-187, KH-550, KH-560 and KH570.

[0018] In some embodiments, the second organic solvent in the anti-infrared film is selected from at least one of EAC, MEK and MIBK.

[0019] In some embodiments, the thickness of the anti-infrared coating in the anti-infrared film is 3-5 μm.

[0020] In some embodiments, the thickness of the hard coating in the anti-infrared film is 3-5 μm.

[0021] The present application provides a preparation method of an anti-infrared film, comprising the following steps:

[0022] forming a hard coating and an anti-infrared coating on opposite surfaces of a substrate respectively;

[0023] The step of forming the anti-infrared coating includes: coating anti-infrared coating slurry on the substrate and solidifying;

[0024] The anti-infrared coating slurry includes the following components by mass fraction:

[0025]

[0026] The present application also provides a display comprising a display screen and the anti-infrared film as described above, wherein the anti-infrared film is arranged on the surface of the display screen.

[0027] Compared with the prior art, the anti-infrared film of the present application has the following beneficial effects:

[0028] The anti-infrared film has the following advantages: the metal oxide, the dispersing agent and the acrylic resin are combined in the anti-infrared coating, so that the metal oxide is uniformly dispersed in the emulsion formed by the acrylic resin and the first organic solvent without the phenomenon of misting and agglomeration, thereby effectively improving the anti-infrared performance of the anti-infrared film while ensuring that the light transmittance is not affected; the emulsion formed by the metal oxide, the acrylic resin and the first organic solvent forms the anti-infrared coating on the surface of the substrate under the curing action of the first initiator, and the bonding performance between the anti-infrared coating and the substrate is good, which can further improve the anti-infrared performance of the anti-infrared film; meanwhile, the hardening coating is arranged on the surface of the substrate away from the anti-infrared coating, which can reduce the roughness of the substrate and improve the light transmittance of the anti-infrared film. The anti-infrared film has the advantages of high light transmittance and good anti-infrared performance due to the synergistic effect between the coating components and between the coatings. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The structure schematic diagram of the anti-infrared film provided by an embodiment.

[0031] Reference signs:

[0032] 10: anti-infrared film; 100: substrate; 200: hardening coating; 300: anti-infrared coating. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be further described in detail below in combination with specific embodiments. The present application can be realized in many different forms and is not limited to the embodiments described herein. It should be understood that the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0036] The weight of the related components mentioned in the description of the embodiments of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of each component. Therefore, as long as the content of the related components in the description of the embodiments of the present application is enlarged or reduced in proportion, it is within the scope disclosed in the description of the embodiments of the present application. Specifically, the weight mentioned in the description of the embodiments of the present application can be μg, mg, g, kg, etc. mass units commonly known in the chemical field.

[0037] Please refer to Figure 1 An embodiment of the present application provides an anti-infrared film 10, comprising a substrate 100, an anti-infrared coating 200 and a hardening coating 300, the hardening coating and the anti-infrared coating are respectively arranged on the two opposite surfaces of the substrate;

[0038] The preparation raw materials of the anti-infrared coating 200 include the following components in mass fraction:

[0039] The preparation raw materials of the anti-infrared coating include the following components in mass fraction:

[0040]

[0041] It can be understood that the hardening coating 300 and the anti-infrared coating 200 have no upper and lower parts, as long as they are respectively located on the two sides of the substrate.

[0042] By arranging the hardening coating and the anti-infrared coating on the two sides of the substrate respectively, the metal oxide, the dispersing agent and the acrylic resin in the anti-infrared coating are combined, so that the metal oxide is uniformly dispersed in the emulsion formed by the acrylic resin and the first organic solvent, without misting and agglomeration phenomenon, thereby effectively improving the anti-infrared performance of the anti-infrared film, while ensuring that the light transmittance is basically not affected. The emulsion formed by the metal oxide, the acrylic resin and the first organic solvent is cured under the action of the first initiator, to form an anti-infrared coating on the surface of the substrate, and the bonding performance between the anti-infrared coating and the substrate is good, which can further improve the anti-infrared performance of the anti-infrared film. At the same time, the hardening coating is arranged on the surface of the substrate away from the anti-infrared coating, which can reduce the roughness of the substrate and effectively improve the light transmittance of the anti-infrared film. The above anti-infrared film has synergistic effect between the coating components and between the coatings, so that the anti-infrared film has high light transmittance and good anti-infrared performance at the same time.

[0043] It is further understood that in some examples, the raw materials for preparing the anti-IR coating 200 include, in percentage by mass, 15-40% of the acrylic resin, 1-5% of the first initiator, 10-30% of the metal oxide, 3-20% of the dispersant, and 10-40% of the first organic solvent.

[0044] In percentage by mass, the acrylic resin in the raw materials for preparing the anti-IR coating 200 includes but is not limited to 15 parts, 20 parts, 25 parts, 28 parts, 30 parts, 32 parts, 35 parts, 38 parts, 40 parts; the first initiator includes but is not limited to 1 part, 2 parts, 3 parts, 5 parts; the metal oxide includes but is not limited to 10 parts, 15 parts, 20 parts, 25 parts, 28 parts, 30 parts; and the dispersant includes but is not limited to 10 parts, 15 parts, 20 parts, 25 parts, 28 parts, 30 parts, 32 parts, 35 parts, 38 parts, 40 parts.

[0045] In some examples, the raw materials for preparing the anti-IR coating 200 include, in percentage by mass, the following components:

[0046]

[0047] In some specific examples, in the anti-IR film 10, the raw materials for preparing the anti-IR coating 200 include, in percentage by mass, the following components:

[0048]

[0049] By controlling the ratio between the acrylic resin, the metal oxide, the dispersant, and the like, the dispersibility of the metal oxide in the emulsion formed by the acrylic resin and the first organic solvent can be further improved, and the adhesion between the anti-IR coating and the substrate can be further improved, thereby further improving the anti-IR performance and the light transmittance.

[0050] In some examples, in the anti-IR film 10, the mass ratio of the metal oxide to the acrylic resin is (0.25-2):1.

[0051] It is understood that the mass ratio of the metal oxide to the acrylic resin includes but is not limited to 0.25:1, 0.28:1, 0.5:1, 0.7:1, 1:1, 1.5:1, 1.8:1, 2:1.

[0052] Further, the mass ratio of the metal oxide to the acrylic resin is (0.25-1):1; alternatively, the mass ratio of the metal oxide to the acrylic resin is (0.5-1):1.

[0053] In some examples, in the anti-IR film 10, the metal oxide is selected from at least one of tungsten oxide (WO3), arsenic trioxide (ATO), and indium tin oxide (ITO).

[0054] In some examples, the metal oxide in the anti-IR film 10 is tungsten oxide and at least one of arsenic trioxide and indium tin oxide.

[0055] It is appreciated that the metal oxide can be tungsten oxide only, tungsten oxide and arsenic trioxide, tungsten oxide and indium tin oxide, or tungsten oxide, arsenic trioxide and indium tin oxide.

[0056] In some examples, the metal oxide in the anti-IR film 10 is a mixture of tungsten oxide and indium tin oxide.

[0057] In some examples, the mass ratio of tungsten oxide to indium tin oxide in the anti-IR film 10 is (1-2): 1.

[0058] It is appreciated that the mass ratio of tungsten oxide to indium tin oxide includes but is not limited to 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2:1.

[0059] In some examples, the dispersant in the anti-IR film 10 is at least one of BYK-110, BYK-2150 and BYK-163.

[0060] Further, the dispersant is at least one of BYK-110 and BYK-2150.

[0061] In some preferred examples, the dispersant in the anti-IR film 10 is a mixture of BYK-110 and BYK-2150.

[0062] In some examples, the mass ratio of BYK-110 to BYK-2150 in the anti-IR film 10 is (1-2): 1.

[0063] It is appreciated that the mass ratio of BYK-110 to BYK-2150 includes but is not limited to 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2:1.

[0064] In some examples, the first organic solvent in the anti-IR film 10 is at least one of EAC (ethyl acetate), MEK (methyl ethyl ketone) and MIBK (methyl isobutyl ketone).

[0065] Further, the first organic solvent is at least one of EAC and MIBK.

[0066] Optionally, the first organic solvent in the anti-IR film 10 is MIBK.

[0067] In some examples, the first initiator in the infrared-resistant film 10 is at least one selected from the group consisting of 1-hydroxycyclohexyl phenyl ketone (initiator 184), 2-hydroxy-2-methyl-1-phenyl-1-propanone (initiator 1173), and 2,4,6(trimethylbenzoyl) diphenyl phosphine oxide (initiator TPO).

[0068] In some examples, the thickness of the infrared-resistant coating 200 in the infrared-resistant film 10 is 3 μm to 5 μm.

[0069] In some examples, the preparation raw material of the hardening coating 300 in the infrared-resistant film 10 includes the following components by mass fraction:

[0070]

[0071] It can be understood that, in some examples, the preparation raw material of the hardening coating 300 in the infrared-resistant film 10 includes the following components by mass fraction:

[0072]

[0073] In some examples, the preparation raw material of the hardening coating 300 in the infrared-resistant film 10 includes the following components by mass fraction:

[0074]

[0075] In some specific examples, the preparation raw material of the hardening coating 300 in the infrared-resistant film 10 includes the following components by mass fraction:

[0076]

[0077]

[0078] In some examples, the inorganic particles in the silane coupling agent modified inorganic particles in the infrared-resistant film 10 are at least one selected from the group consisting of silicon dioxide and aluminum oxide.

[0079] In some examples, the particle size of the inorganic particles in the silane coupling agent modified inorganic particles in the infrared-resistant film 10 is 30 nm to 50 nm.

[0080] In some examples, the silane coupling agent in the infrared-resistant film 10 is at least one selected from the group consisting of A-187, KH-550, KH-560, and KH570; further, the silane coupling agent is at least one selected from the group consisting of KH-550 and KH570.

[0081] In some preferred examples, the silane coupling agent in the infrared-resistant film 10 is KH570.

[0082] In some examples, the preparation of the inorganic particles modified by the silane coupling agent in the anti-infrared film 10 includes the following steps:

[0083] Mixing the inorganic particles and the silane coupling agent, stirring at 50-80°C to obtain an inorganic particle dispersion liquid;

[0084] Placing the inorganic particle dispersion liquid in an ultrasonic device for ultrasonic treatment.

[0085] Further, the stirring speed is 100-200 r / min.

[0086] Further, the ultrasonic frequency is 50 Hz.

[0087] In some examples, the second organic solvent in the anti-infrared film 10 is selected from at least one of EAC, MEK and MIBK. Further, the second organic solvent is selected from at least one of EAC and MEK.

[0088] In some preferred examples, the second organic solvent in the anti-infrared film 10 is EAC.

[0089] In some examples, the functionality of the polyurethane acrylic resin in the anti-infrared film 10 is 9-10.

[0090] In some examples, the functionality of the dipentaerythritol hexaacrylate in the anti-infrared film 10 is 6.

[0091] In some examples, the second initiator in the anti-infrared film 10 is selected from at least one of 1-hydroxycyclohexyl phenyl ketone (initiator 184), 2-hydroxy-2-methyl-1-phenyl-1-propanone (initiator 1173) and 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxide (initiator TPO).

[0092] In some specific examples, the second initiator in the anti-infrared film 10 is 1-hydroxycyclohexyl phenyl ketone.

[0093] In some examples, the thickness of the hardened coating layer 300 in the anti-infrared film 10 is 3-5 μm.

[0094] In some examples, the water drop angle of the hardened coating layer 300 in the anti-infrared film 10 is > 110°, and the pencil hardness is 3H-6H.

[0095] In some examples, the substrate 100 in the anti-infrared film 10 is selected from at least one of PET, PC, TAC and PMMA.

[0096] In some examples, the thickness of the substrate in the anti-infrared film 10 is 50-500 μm.

[0097] In some specific examples, the thickness of the substrate in the anti-infrared film 10 is selected from 80 μm, 100 μm, 150 μm, 175 μm, 250 μm or 500 μm.

[0098] An embodiment of the present application provides a method for preparing an anti-infrared film, comprising the following steps:

[0099] forming a hard coating and an anti-infrared coating on the opposite surfaces of the substrate, respectively;

[0100] The step of forming the anti-infrared coating comprises: coating the anti-infrared coating slurry on the substrate and solidifying.

[0101] The anti-infrared coating slurry comprises the following components by mass fraction:

[0102] The preparation raw material comprises the following components:

[0103]

[0104] It can be understood that, according to the preparation raw material of the anti-infrared coating in the anti-infrared film described above, the components are provided and mixed uniformly to obtain the anti-infrared coating slurry, which is coated on the substrate and solidified to form the anti-infrared coating on one side of the substrate; and according to the preparation raw material of the hard coating in the anti-infrared film described above, the components are provided and mixed uniformly to obtain the hard coating slurry, which is coated on the other side of the substrate and solidified to form the hard coating on one side of the substrate. It can be understood that, the formation of the anti-infrared coating and the hard coating has no sequence, the hard coating can be formed on the surface of the substrate first, and then the anti-infrared coating is formed on the other surface of the substrate away from the hard coating; or the anti-infrared coating can be formed on the surface of the substrate first, and then the hard coating is formed on the other surface of the substrate away from the anti-infrared coating.

[0105] In some examples, the preparation method of the anti-infrared film comprises the following steps in the preparation of the anti-infrared coating slurry:

[0106] The metal oxide, the dispersant and part of the first organic solvent are mixed and dispersed to obtain a metal oxide dispersion liquid;

[0107] The acrylic resin, the first initiator and the metal oxide dispersion liquid are mixed.

[0108] It can be understood that, the metal oxide and the dispersant are first made into a dispersion liquid, which can further promote the uniform dispersion of the metal oxide in the emulsion formed by the acrylic resin and the first organic solvent.

[0109] An embodiment of the present application provides the use of the anti-infrared film described above in the preparation of a display.

[0110] An embodiment of the present application provides a display, characterized in that the display comprises a display screen and the above-mentioned infrared-resistant film, and the infrared-resistant film is arranged on the surface of the display screen. Further, the infrared-resistant film is adhered to the display surface of the display screen with the side of the hardening coating. Further, the display is a head-up display, and the display screen is a head-up display screen.

[0111] The application of the above-mentioned infrared-resistant film to the head-up display can reduce the friction caused by the use of the head-up display, and reduce the damage caused by dust, rain and the like to the head-up display, and has good infrared resistance and high light transmittance. Specific embodiments

[0113] The following examples of the infrared-resistant film, the preparation method thereof and the display according to the present application can be understood that the infrared-resistant film, the preparation method thereof and the display according to the present application are not limited to the following examples.

[0114] Example 1

[0115] The raw material components of each layer of the infrared-resistant film are as follows in terms of weight percentage:

[0116] The substrate: PC (purchased from Covestro, model SR906, thickness 250 μm);

[0117] The infrared-resistant coating: acrylic resin 20 parts, photoinitiator 184 5 parts, BYK-110 15 parts, tungsten oxide 20 parts and ethyl acetate 40 parts;

[0118] The hardening coating: polyurethane acrylic resin 40 parts, dipentaerythritol hexaacrylate (functional group 6) 10 parts, modified silica A-187 10 parts, initiator TPO 3 parts, ethyl acetate 37 parts;

[0119] The preparation steps of the infrared-resistant film are as follows:

[0120] (1) The metal oxide (nano tungsten oxide powder), the dispersing agent (BYK-110) and the first organic solvent (ethyl acetate) are mixed in the above-mentioned proportions, and are dispersed by using a high-speed dispersing machine to prepare a metal oxide dispersion liquid;

[0121] (2) The acrylic resin, the photoinitiator and the metal oxide dispersion liquid are mixed to prepare an infrared-resistant coating slurry, which is coated on one side of the substrate, and is subjected to heat drying and UV curing to form an infrared-resistant coating with a thickness of 4 μm;

[0122] (3) The nano silica and the silane coupling agent (A-187) are mixed, and after stirring (150 r / min) at 60°C for 20 min, the silane coupling agent modified nano silica is prepared by ultrasonic treatment at 50 Hz;

[0123] (4) Polyurethane acrylic resin, dipentaerythritol hexaacrylate, silane coupling agent modified nano-silica, initiator (TPO) and second organic solvent (ethyl acetate) were mixed in the above proportions to prepare a hard coating slurry, which was coated on the other side of the substrate away from the anti-IR coating, and after heat drying and UV curing, a hard coating was formed with a thickness of 4 μm, to obtain an anti-IR film.

[0124] Example 2

[0125] The same as Example 1, except that the components in the anti-IR coating were different, as follows:

[0126] Anti-IR coating: acrylic resin 30 parts, photoinitiator 184 5 parts, BYK-110 10 parts, tungsten oxide 15 parts and ethyl acetate 40 parts.

[0127] Example 3

[0128] The same as Example 1, except that the components in the anti-IR coating were different, as follows:

[0129] Anti-IR coating: acrylic resin 30 parts, photoinitiator 184 5 parts, BYK-110 10 parts, tungsten oxide 20 parts and ethyl acetate 35 parts.

[0130] Example 4

[0131] The same as Example 1, except that the components in the anti-IR coating were different, as follows:

[0132] Anti-IR coating: acrylic resin 15 parts, photoinitiator 184 5 parts, BYK-163 10 parts, arsenic trioxide 30 parts and ethyl acetate 40 parts.

[0133] Example 5

[0134] The same as Example 1, except that the components in the anti-IR coating were different, as follows:

[0135] Anti-IR coating: acrylic resin 40 parts, photoinitiator 184 5 parts, BYK-2150 10 parts, indium tin oxide 10 parts and ethyl acetate 35 parts.

[0136] Example 6

[0137] The same as Example 1, except that the components in the anti-IR coating were different, as follows:

[0138] Anti-IR coating: acrylic resin 30 parts, photoinitiator 184 5 parts, BYK-110 10 parts, tungsten oxide 10 parts, arsenic trioxide 10 parts and ethyl acetate 35 parts.

[0139] Example 7

[0140] The same as Example 1, except that the components in the anti-IR coating are different, as follows:

[0141] Anti-IR coating: acrylic resin 30 parts, photoinitiator 184 5 parts, BYK-110 5 parts, BYK-2150 5 parts, tungsten oxide 12 parts, indium tin oxide 8 parts, and ethyl acetate 35 parts.

[0142] Example 8

[0143] The same as Example 1, except that the components in the hardening coating are different, as follows:

[0144] Hardening coating: polyurethane acrylic resin 30 parts, dipentaerythritol hexaacrylate (functionality 6) 15 parts, KH570 modified alumina 15 parts, initiator TPO 3 parts, ethyl acetate 37 parts.

[0145] Comparative Example 1

[0146] The same as Example 1, except that no metal oxide and dispersant are added to the anti-IR coating.

[0147] Comparative Example 2

[0148] The same as Example 1, except that no dispersant is added to the anti-IR coating.

[0149] Comparative Example 3

[0150] The same as Example 1, except that the proportions of the components in the anti-IR coating are different, as follows:

[0151] Anti-IR coating: acrylic resin 45 parts, photoinitiator 184 5 parts, BYK-110 15 parts, tungsten oxide 5 parts, and ethyl acetate 30 parts.

[0152] Comparative Example 4

[0153] The same as Example 1, except that the hardening coating is applied to the surface of the anti-IR coating away from the substrate, as follows:

[0154] (4) The prepared hardening coating slurry is applied to the surface of the anti-IR coating away from the substrate, and after heat drying and UV curing, a hardening coating is formed on the surface of the anti-IR coating away from the substrate, with a thickness of 4 μm, to obtain an anti-IR film. At this time, the anti-IR film is in the order of substrate, anti-IR coating, and hardening coating.

[0155] Comparative Example 5

[0156] The anti-infrared film is substantially the same as that of Example 1, except that the anti-infrared film does not comprise a hardening coating.

[0157] The parameters of the partial components of the anti-infrared coating in the anti-infrared films of the examples and the comparative examples are shown in Table 1.

[0158] Table 1

[0159]

[0160] The light transmittance and the infrared transmittance of the anti-infrared films prepared in the examples and the comparative examples are tested by Lambda 950, respectively, and the results are shown in Table 2; the lower the infrared transmittance, the better the anti-infrared effect.

[0161] Table 2

[0162]

[0163] As can be seen from Table 2, compared with the comparative examples, the anti-infrared films prepared in the examples have better comprehensive performance in terms of light transmittance and anti-infrared performance. In the comparative example 1, no metal oxide and dispersant are added, and the infrared transmittance reaches 85%, and the anti-infrared performance is poor; in the comparative example 2, the metal oxide added in the anti-infrared coating is not dispersed by the dispersion liquid, and the metal oxide not dispersed by the dispersion liquid is difficult to disperse in the emulsion formed by the acrylic resin and the first organic solvent, and is prone to fogging and agglomeration, so that the light transmittance and the infrared transmittance of the prepared anti-infrared film are both low; in the comparative example 3, the proportion of each component is not appropriate, and the interaction between the components is poor, resulting in a high infrared transmittance; in the comparative example 4, the anti-infrared film does not comprise a hardening coating, and the finished product light transmittance of the prepared anti-infrared film is low.

[0164] The technical features of the above-described examples can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described examples are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0165] The above-described examples only express several embodiments of the present application, which are convenient for specifically and in detail understanding the technical solutions of the present application, but should not be understood as limiting the scope of protection of the patent. It should be pointed out that for ordinary skilled in the art, on the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. It should be understood that the technical solutions obtained by the skilled in the art through logical analysis, reasoning or limited experiments on the basis of the technical solutions provided by the present application are within the scope of protection of the appended claims of the present application. Therefore, the scope of protection of the present patent should be based on the contents of the appended claims, and the description and drawings can be used to explain the contents of the claims.

Claims

1. An infrared-reflective film, characterized by, The substrate, the hardening coating and the anti-infrared coating are respectively arranged on two opposite surfaces of the substrate; The preparation raw materials of the anti-infrared coating include the following components by mass fraction: 15-40 parts of acrylic resin; 1-5 parts of first initiator; 10-30 parts of metal oxide; 3-20 parts of dispersant; 10-40 parts of first organic solvent; The metal oxide includes tungsten oxide and indium tin oxide; the dispersant includes BYK-110 and BYK-2150; the mass ratio of the tungsten oxide to the indium tin oxide is (1-2):1; The preparation raw materials of the hardening coating include the following components by mass fraction: 30-40 parts of polyurethane acrylic resin; 10-15 parts of dipentaerythritol hexaacrylate; 10-15 parts of silane coupling agent modified inorganic particle; 1-3 parts of second initiator; 27-49 parts of second organic solvent.

2. The anti-infrared film according to claim 1, wherein The mass ratio of the metal oxide to the acrylic resin is (0.25-2):

1.

3. The anti-IR film of claim 2, wherein, The mass ratio of the metal oxide to the acrylic resin is (0.5-1):

1.

4. The anti-IR film of claim 1, wherein, The first organic solvent is selected from at least one of EAC, MEK and MIBK.

5. The anti-IR film of claim 1, wherein, The inorganic particle in the silane coupling agent modified inorganic particle is selected from at least one of silica and alumina.

6. The anti-IR film of claim 1, wherein, The silane coupling agent is selected from at least one of A-187, KH-550, KH-560 and KH570.

7. The anti-IR film of claim 1, wherein, The second organic solvent is selected from at least one of EAC, MEK and MIBK.

8. The anti-infrared film according to any one of claims 1 to 7, wherein The thickness of the anti-infrared coating is 3-5 μm, and the thickness of the hardening coating is 3-5 μm.

9. A method of producing an infrared-reflective film, characterized by, The method includes the following steps: forming the hardening coating and the anti-infrared coating on two opposite surfaces of the substrate respectively; The step of forming the anti-infrared coating includes: curing the anti-infrared coating slurry on the substrate; The anti-infrared coating slurry includes the following components by mass fraction: 15-40 parts of acrylic resin; 1-5 parts of first initiator; 10-30 parts of metal oxide; 3-20 parts of dispersant; 10-40 parts of first organic solvent; The metal oxide includes tungsten oxide and indium tin oxide; the dispersant includes BYK-110 and BYK-2150; the mass ratio of the tungsten oxide to the indium tin oxide is (1-2):1; The preparation raw materials of the hardening coating include the following components by mass fraction: 30-40 parts of polyurethane acrylic resin; 10-15 parts of dipentaerythritol hexaacrylate; 10-15 parts of silane coupling agent modified inorganic particle; 1-3 parts of second initiator; 27-49 parts of second organic solvent.

10. A display, characterized by The anti-infrared film as claimed in any one of claims 1-8 is arranged on the surface of the display screen. The anti-infrared film as claimed in any one of claims 1-8 is arranged on the surface of the display screen.

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