Matte-coating transfer film, preparation method therefor, and use thereof

Abstract

The present invention relates to the technical field of surface multifunctionalization of composite fiber materials, engineering plastic materials, inorganic materials, metal materials, etc., and provides a matte-coating transfer film, a preparation method therefor, and a use thereof. The preparation method for the matte-coating transfer film comprises the following steps: S1: first coating the surface of a substrate layer with a treatment layer, then coating same with a coating solution I, and performing excimer curing to form a matte surface; S2: then performing EB curing to completely cure the coating solution I to obtain a matte coating; and S3: coating the surface of the matte coating with a coating solution II, and then performing EB curing to cure the coating solution II to obtain a transfer layer, thereby completing preparation of the matte-coating transfer film. In the preparation method for the matte-coating transfer film provided by the present invention, by using excimer curing and EB curing techniques and the synergistic effect of the components, the prepared matte-coating transfer film can impart an ultra-matte effect to the surfaces of composite fiber materials, engineering plastic materials, inorganic materials, metal materials, etc., and can also endow the materials with special functionalities including antibacterial, bactericidal, antiviral, antistatic, strong acid- and alkali-resistant, fingerprint-resistant, scratch-resistant, and self-cleaning properties, thereby enhancing the functionality and practicality of the composite fiber materials, the engineering plastic materials, the inorganic materials, and the metal materials.

Description

A coated matte transfer film, its preparation method and application Technical Field

[0001] This invention relates to the field of surface multifunctionalization technology for composite fiber materials, engineering plastic materials, inorganic materials, and metallic materials, specifically to a coated matte transfer film, its preparation method, and its application. Background Technology

[0002] In contemporary society, with continuous economic development and the improvement of people's living standards, the requirements for the aesthetics, durability, and functionality of living environments are constantly increasing. Various advanced materials, such as composite fiber materials, engineering plastic materials, inorganic materials, and metallic materials, are being widely used in the construction field. Due to their cost-effectiveness and ease of processing, these materials are also widely used in furniture manufacturing, interior decoration, and functional finishing industries.

[0003] However, existing surface functional treatment technologies for materials have some limitations, especially in achieving the desired matte effect. Often, it is necessary to add a large amount of matting powder to the surface coating material to reduce gloss. As an insoluble solid particle, matting powder can scatter light, thereby reducing the gloss of the material surface and achieving a matte effect. However, matting powder cannot achieve an ultra-matte effect, and excessive matting powder may degrade the surface coating and the overall performance of the material. Summary of the Invention

[0004] To address the shortcomings of existing technologies that fail to achieve ultra-matte finishes, antibacterial properties, and antiviral functions on the surfaces of composite fiber materials, engineering plastic materials, inorganic materials, and metal materials, this invention discloses a method for preparing a coated matte transfer film. This method utilizes excimer curing and EB curing technologies, along with the synergistic effect of each component, to enable the prepared coated matte transfer film to impart an ultra-matte finish to the material. Furthermore, it can endow composite fiber materials, engineering plastic materials, inorganic materials, and metal materials with antibacterial, antiviral, antistatic, scratch-resistant, and stain-resistant properties, thereby enhancing the practicality and aesthetics of the material.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] This invention provides a method for preparing a coated matte transfer film, comprising the following steps:

[0007] S1: After coating the treatment layer on the substrate surface, apply coating liquid I and place it under an excimer lamp for curing to form a matte surface;

[0008] S2: Place the matte surface face up under the radiation source for the first EB curing to obtain a matte coating layer;

[0009] S3: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0010] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0011] Furthermore, the substrate material is selected from at least one of PET, PP, PC, ABS, and PMMA. The thickness is 30-250 μm.

[0012] Furthermore, the excimer lamp curing process has an energy density of 500-5000 mW / cm². 2 Radiation time 1-10s, oxygen content 1-200ppm.

[0013] Furthermore, the first EB curing involves a radiation dose of 5-50 kGy and a radiation time of 1-10 s; and the thickness of the matte coating layer is 5-50 μm.

[0014] Furthermore, the second EB curing involves a radiation dose of 5-120 kGy and a radiation time of 5-30 s; and the thickness of the transfer layer is 50-200 μm.

[0015] Furthermore, the coating liquid II comprises the following raw materials in parts by weight:

[0016] 30-40 parts of amino acrylate;

[0017] 30-40 parts of dual-curing resin;

[0018] 15-40 parts of reactive diluent;

[0019] Additives: 0.3-0.5 parts.

[0020] Furthermore, the dual-cured resin has a polyhydroxy structure.

[0021] Furthermore, the active diluent is a mixture of monofunctional and difunctional components at a dosage ratio of 5-10g:10-30g.

[0022] Furthermore, the monofunctional reactive diluent has a soft monomer structure, including laurate acrylate; and the difunctional reactive diluent includes hexanediol diacrylate.

[0023] Another objective of this invention is to provide a coated matte transfer film prepared by the above method, wherein the coated matte transfer film is provided with a substrate layer, a treatment layer, a coated matte layer and a transfer layer in sequence from top to bottom.

[0024] Another objective of this invention is to provide the application of coated matte transfer film in composite fiber materials, engineering plastic materials, inorganic materials, and metal materials. By contacting the transfer layer of the coated matte transfer film with a paper impregnated with hydroxyl resin, hot pressing, bonding, and peeling are performed to allow the transfer layer to adhere to the surface of these materials such as composite fiber materials, engineering plastic materials, inorganic materials, and metal materials.

[0025] The present invention has the following beneficial effects:

[0026] (1) This invention discloses a method for preparing a coated matte transfer film. The method utilizes excimer curing and EB curing technologies to ensure that the transfer layer achieves excellent physical and chemical properties. Through the synergistic effect of each component, the prepared coated matte transfer film can provide super matte, antibacterial, antiviral, antistatic, and scratch-resistant effects to the surface of decorative panels. In addition, the application process of this method is simple and does not require any adjustment to the existing hot pressing process.

[0027] (2) This invention discloses a method for preparing a matte transfer film. The transfer layer coating liquid II is designed from the perspective of chemical structure and is composed of substances with basic radiation curing function. From the perspective of subsequent hot pressing process, a dual curing resin with a multi-hydroxyl structure is specially added, which can chemically bond with the subsequent impregnated hydroxyl resin film paper and has high adhesion. In addition, the coating liquid II is formulated to have high hardness and toughness, which can meet the winding requirements and can be used for the high scratch resistance requirements of composite fiber boards.

[0028] (3) This invention discloses a method for preparing a matte transfer film, employing a combination of excimer lamp and EB curing technology. First, a 172nm excimer curing technique is used to form a high-matte coating surface. After a first EB curing, a fully cured coating with a high-matte finish is formed. Second, during the coating of liquid II, a reverse EB radiation process is used, carefully selecting the EB radiation energy range. Based on the EB radiation gradient curing mechanism, a semi-cured state of liquid II is formed, with the surface layer having a lower degree of curing compared to the bottom layer, facilitating subsequent hot-pressing transfer. This technology effectively improves production efficiency and can yield transfer films with high matte finish, rollability, and hot-pressability. Detailed Implementation

[0029] The present invention will now be described in further detail. The embodiments described below are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] To address the drawback of existing technologies requiring the addition of matting agents to achieve a matte finish on composite fiber material boards, this invention provides a method for preparing a matte transfer film, comprising the following steps:

[0031] S1: Apply coating liquid I to the surface of the substrate with the coating treatment layer, preheat at 60°C for 5 minutes, and place it under a 172nm excimer lamp for excimer lamp curing to form a matte surface;

[0032] S2: Place the matte surface face up under the radiation source for the first EB curing to obtain a matte coating layer;

[0033] S3: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0034] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0035] The coating method described in this invention is selected from at least one of micro-recessed coating, comma blade coating, and slot coating to ensure the coating thickness. Based on the thickness of the matte layer and the transfer layer, the matte layer in the following embodiments of this invention is coated by micro-recessed coating, and the transfer layer is coated by comma blade coating.

[0036] The substrate material is selected from at least one of PET, PP, PC, ABS, and PMMA; and the substrates in the following embodiments of the present invention are all PET-50 μm.

[0037] The excimer lamp curing process has an energy density of 500-5000 mW / cm². 2 It can reach 1000mW / cm 2 2000mW / cm 2 3000mW / cm 2 4000mW / cm 2 5000mW / cm 2Or a range of values ​​composed of any two values; radiation time 1-10s, which can be 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s; oxygen content 1-200ppm, which can be 5ppm, 10ppm, 20ppm, 50ppm, 80ppm, 100ppm, 120ppm, 150ppm, 200ppm.

[0038] The coating liquid I is a commonly used UV coating liquid. To achieve the above-mentioned effects, the composition of coating liquid I in the following embodiments of the present invention is as follows: 70 parts of epoxy acrylate resin BASF LR8986; 6 parts of isooctyl acrylate; 6 parts of 1,6-hexanediol diacrylate; 3 parts of ethoxylated trimethylolpropane triacrylate; 0.1 parts of defoamer BYK 1791; and 0.2 parts of leveling agent DOWSIL 204SL.

[0039] The first EB curing involves a radiation dose of 5-50 kGy, which can be 5 kGy, 10 kGy, 20 kGy, 30 kGy, 40 kGy, or 50 kGy; the radiation time is 1-10 seconds, which can be 2 seconds, 4 seconds, 6 seconds, 8 seconds, or 10 seconds; and

[0040] The thickness of the matte coating layer is 5-50 μm, and can be 5 μm, 15 μm, 25 μm, 35 μm, 45 μm, 50 μm or any two of these values.

[0041] The second EB curing involves a radiation dose of 5-120 kGy, which can be 5 kGy, 20 kGy, 40 kGy, 60 kGy, 80 kGy, 90 kGy, 100 kGy, 120 kGy, or any combination of two values; the radiation time is 5-30 s, which can be 5 s, 8 s, 10 s, 15 s, 18 s, 20 s, 25 s, or 30 s. The process is adjusted according to the substrate thickness and in conjunction with the subsequent hot-pressing process to achieve the best pre-curing effect. For example, with a 50 μm thick substrate, a voltage of 150 keV and a dose range of 5-120 kGy can achieve pre-curing of the transfer layer. After EB curing, the coating liquid forms a cured film on the substrate surface, which can be peeled off. At this point, because the peeled transfer film loses its supporting substrate, its structure is relatively fragile; however, EB... The cured film surface is dry, which allows the film to undergo subsequent processing operations such as winding and cutting.

[0042] The thickness of the transfer layer is 50-200 μm, which can be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 120 μm, 140 μm, 150 μm, 160 μm, 180 μm, 200 μm or any two of these values.

[0043] The coating liquid II comprises the following raw materials in parts by weight:

[0044] 30-40 parts of amino acrylate;

[0045] 30-40 parts of dual-curing resin;

[0046] 15-40 parts reactive diluent;

[0047] Additives: 0.3-0.5 parts.

[0048] The amino acrylate is an amino-modified acrylate, which has excellent adhesion, hardness and radiation curability; and the amino acrylates mentioned in the following embodiments of the present invention are all grade 628A80.

[0049] The dual-curing resin has a polyhydroxy structure, which can participate in the subsequent hot-press curing with hydroxyl resin film paper, providing high adhesion; at the same time, it can be radiation cured to participate in the coating reaction, which has the effect of simultaneously improving cohesion and adhesion; the dual-curing resin mentioned in the following embodiments of the present invention is all PRD 3030 grade.

[0050] The active diluent is a mixture of monofunctional and difunctional components at a ratio of 5-10g:10-30g.

[0051] The monofunctional reactive diluent has a soft monomer structure, including laurate; it can also be a mixture of one or more of the following: laurate and hydroxyethyl acrylate, hydroxypropyl acrylate, isooctyl acrylate, octadecyl acrylate, 2-methoxyethyl acrylate, 2-butoxyethyl acrylate, 2-dimethylaminoethyl acrylate, ethoxyethoxyethyl acrylate, and hexanediol methoxy monoacrylate.

[0052] The difunctional reactive diluent includes hexanediol diacrylate; it may also be a mixture of hexanediol diacrylate and one or more of the following: 1,3-propanediol diacrylate, 1,4-butanediol diacrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate, ethoxyneopentyl glycol diacrylate, propoxyneopentyl glycol diacrylate, cyclohexanediol diacrylate, and ethoxylated bisphenol A diacrylate.

[0053] The additives include leveling agents, defoamers, etc.

[0054] The leveling agent is Tego Rad 2100.

[0055] The defoamer is BYK-1748.

[0056] The present invention provides a coated matte transfer film, which is prepared by the above method. The coated matte transfer film is provided with a substrate layer, a treatment layer, a coated matte layer and a transfer layer from top to bottom.

[0057] This invention also provides the application of coated matte transfer film in hot-pressed composite fiber laminates. By contacting the transfer layer of the coated matte transfer film with an amino resin film paper, hot pressing, bonding, and peeling are performed to allow the transfer layer to adhere to the surface of composite fiber materials, engineering plastic materials, inorganic materials, and metal materials, thereby achieving the functionalization of the materials.

[0058] During the hot-pressing process, the high temperature accelerates the flow of the uncured hydroxyl resin adhesive, covering the entire contact surface. Simultaneously, under high pressure, the matte transfer film and the hydroxyl resin adhesive achieve mutual penetration. Because the hydroxyl resin adhesive contains a large number of hydroxymethyl groups, these groups undergo a dehydration reaction with the hydroxyl groups in the dual-curing resin at high temperature, forming chemical bonds. Under the influence of these chemical bonds, the matte transfer film and the hydroxyl resin achieve a good bond. Furthermore, the molecular chains within the matte transfer film undergo further cross-linking and curing under the influence of these chemical bonds. During the hot-pressing of the hydroxyl resin film and paper, the top abrasion-resistant surface paper is removed and replaced with the matte transfer film of this invention. After high-temperature hot pressing, the transfer layer of the matte transfer film tightly penetrates and bonds with the hydroxyl resin film, forming a protective layer with excellent physical and chemical properties and decorative effects. The matte transfer film substrate can be used as a protective film during the transportation and installation of the board; it can be removed after installation.

[0059] The material used as the substrate in this invention can be one of composite fiber materials, engineering plastic materials, inorganic materials, and metal materials; and, in the following embodiments of this invention, the substrate is a composite fiber laminate.

[0060] The hydroxyl resin film paper of the present invention can be at least one of melamine film paper, phenolic film paper, and urea-formaldehyde resin film paper. The transfer film of the present invention has good adhesion to melamine film paper, phenolic film paper, and urea-formaldehyde resin film paper. Furthermore, the amino resin film paper mentioned in the following embodiments of the present invention is all melamine film paper.

[0061] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below.

[0062] Example 1

[0063] A method for preparing a coated matte transfer film includes the following steps:

[0064] S1: After coating the treatment layer on the substrate surface, apply coating liquid I, preheat at 60°C for 5 minutes, and place under a 172nm excimer lamp for excimer lamp curing to form a matte surface;

[0065] S2: Place the matte surface face up under the radiation source for the first EB curing to obtain a matte coating layer;

[0066] S3: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0067] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0068] The excimer lamp curing process has an energy density of 3000 mW / cm². 2 Radiation time: 4 seconds; Oxygen content: 100 ppm.

[0069] The first EB curing was performed with a radiation dose of 8 kGy and a radiation time of 3 seconds; and

[0070] The thickness of the matte coating layer is 5 μm.

[0071] The second EB curing was performed with a radiation dose of 40 kGy and a radiation time of 6 seconds; and

[0072] The thickness of the transfer layer is 150 μm.

[0073] The coating liquid II comprises the following raw materials in parts by weight:

[0074] 35 parts of amino acrylate;

[0075] 35 parts of dual-curing resin;

[0076] 28 parts of reactive diluent;

[0077] 0.1 parts of defoamer;

[0078] 0.3 parts leveling agent.

[0079] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 7g:21g.

[0080] This embodiment also provides a coated matte transfer film, which is prepared by the above method. The coated matte transfer film is provided with a substrate layer, a treatment layer, a coated matte layer and a transfer layer from top to bottom.

[0081] This embodiment further provides the application of coated matte transfer film in hot-pressed composite fiber laminate. The transfer layer of the coated matte transfer film is brought into contact with amino resin film paper, and then hot-pressed, bonded, and peeled off to make the transfer layer adhere to the surface of the composite fiber board.

[0082] Example 2

[0083] A method for preparing a coated matte transfer film includes the following steps:

[0084] S1: After coating the treatment layer on the substrate surface, apply coating liquid I, preheat at 60°C for 5 minutes, and place under a 172nm excimer lamp for excimer lamp curing to form a matte surface;

[0085] S2: Place the matte surface face up under the radiation source for the first EB curing to obtain a matte coating layer;

[0086] S3: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0087] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0088] The excimer lamp curing process has an energy density of 1000 mW / cm². 2 Radiation time: 10s; Oxygen content: 5ppm.

[0089] The first EB curing was performed with a radiation dose of 5 kGy and a radiation time of 5 seconds; and

[0090] The thickness of the matte coating layer is 10 μm.

[0091] The second EB curing was performed with a radiation dose of 5 kGy and a radiation time of 10 s; and

[0092] The thickness of the transfer layer is 50 μm.

[0093] The coating liquid II comprises the following raw materials in parts by weight:

[0094] 40 parts of amino acrylate;

[0095] 30 parts of dual-curing resin;

[0096] 20 parts reactive diluent;

[0097] 0.1 parts defoamer; 0.4 parts leveling agent.

[0098] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 10g:10g.

[0099] This embodiment also provides a coated matte transfer film, which is prepared by the above method. The coated matte transfer film is provided with a substrate layer, a treatment layer, a coated matte layer and a transfer layer from top to bottom.

[0100] This embodiment further provides the application of coated matte transfer film in hot-pressed composite fiber laminate. The transfer layer of the coated matte transfer film is brought into contact with amino resin film paper, and then hot-pressed, bonded, and peeled off to make the transfer layer adhere to the surface of the composite fiber board.

[0101] Example 3

[0102] A method for preparing a coated matte transfer film includes the following steps:

[0103] S1: After coating the treatment layer on the substrate surface, apply coating liquid I, preheat at 60°C for 5 minutes, and place under a 172nm excimer lamp for excimer lamp curing to form a matte surface;

[0104] S2: Place the matte surface face up under the radiation source for the first EB curing to obtain a matte coating layer;

[0105] S3: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0106] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0107] The excimer lamp curing process has an energy density of 5000 mW / cm². 2Radiation time: 2 seconds; Oxygen content: 200 ppm.

[0108] The first EB curing was performed with a radiation dose of 10 kGy and a radiation time of 2 seconds; and

[0109] The thickness of the matte coating layer is 15 μm.

[0110] The second EB curing involves a radiation dose of 60 kGy and a radiation time of 3 s; and the thickness of the transfer layer is 200 μm.

[0111] The coating liquid II comprises the following raw materials in parts by weight:

[0112] 30 parts of amino acrylate;

[0113] 40 parts of dual-curing resin;

[0114] 35 parts of reactive diluent;

[0115] 0.1 parts of defoamer;

[0116] 0.2 parts leveling agent.

[0117] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 5g:30g.

[0118] This embodiment also provides a coated matte transfer film, which is prepared by the above method. The coated matte transfer film is provided with a substrate layer, a treatment layer, a coated matte layer and a transfer layer from top to bottom.

[0119] This embodiment further provides the application of coated matte transfer film in hot-pressed composite fiber laminate. The transfer layer of the coated matte transfer film is brought into contact with amino resin film paper, and then hot-pressed, bonded, and peeled off to make the transfer layer adhere to the surface of the composite fiber board.

[0120] Example 4

[0121] Everything else is the same as in Example 1, except that:

[0122] In a method for preparing a coated matte transfer film,

[0123] The coating liquid II comprises the following raw materials in parts by weight:

[0124] 35 parts of amino acrylate;

[0125] 30 parts of dual-curing resin;

[0126] 28 parts of reactive diluent;

[0127] 0.1 parts of defoamer;

[0128] 0.3 parts leveling agent.

[0129] Example 5

[0130] Everything else is the same as in Example 1, except that:

[0131] In a method for preparing a coated matte transfer film,

[0132] The coating liquid II comprises the following raw materials in parts by weight:

[0133] 35 parts of amino acrylate;

[0134] 40 parts of dual-curing resin;

[0135] 28 parts of reactive diluent;

[0136] 0.1 parts of defoamer;

[0137] 0.3 parts leveling agent.

[0138] Example 6

[0139] Everything else is the same as in Example 1, except that:

[0140] In a method for preparing a coated matte transfer film,

[0141] The coating liquid II comprises the following raw materials in parts by weight:

[0142] 35 parts of amino acrylate;

[0143] 35 parts of dual-curing resin;

[0144] 20 parts reactive diluent;

[0145] 0.1 parts of defoamer;

[0146] 0.3 parts leveling agent.

[0147] The reactive diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 5g:15g.

[0148] Example 7

[0149] Everything else is the same as in Example 1, except that:

[0150] In a method for preparing a coated matte transfer film,

[0151] The coating liquid II comprises the following raw materials in parts by weight:

[0152] 35 parts of amino acrylate;

[0153] 35 parts of dual-curing resin;

[0154] 40 parts of reactive diluent;

[0155] 0.1 parts of defoamer;

[0156] 0.3 parts leveling agent.

[0157] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 10g:30g.

[0158] Example 8

[0159] Everything else is the same as in Example 1, except that:

[0160] In a method for preparing a coated matte transfer film,

[0161] The reactive diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 9.3g:18.7g.

[0162] Example 9

[0163] Everything else is the same as in Example 1, except that:

[0164] In a method for preparing a coated matte transfer film,

[0165] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 5.5g:22.5g.

[0166] The following comparisons are all compared with Example 1:

[0167] Comparative Example 1

[0168] Everything else is the same as in Example 1, except that:

[0169] A method for preparing a coated matte transfer film includes the following steps:

[0170] S1: After coating the treatment layer on the substrate surface, apply coating liquid I, and place it under the radiation source in the positive direction for the first EB curing to obtain a matte coating layer.

[0171] S2: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0172] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0173] Comparative Example 2

[0174] Everything else is the same as in Example 1, except that:

[0175] A method for preparing a coated matte transfer film includes the following steps:

[0176] S1: After coating the treatment layer on the substrate surface, apply coating liquid I, preheat at 60°C for 5 minutes, and place under a 172nm excimer lamp for excimer lamp curing to form a matte surface;

[0177] S2: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained.

[0178] The reverse side is placed as the radiation source, where EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0179] Comparative Example 3

[0180] Everything else is the same as in Example 1, except that:

[0181] In a method for preparing a coated matte transfer film,

[0182] The second EB curing was performed with a radiation dose of 1 kGy.

[0183] Comparative Example 4

[0184] Comparative Example 4 is the same as Example 1, except that:

[0185] In a method for preparing a coated matte transfer film,

[0186] The second EB curing was performed with a radiation dose of 125 kGy.

[0187] Comparative Example 5

[0188] Everything else is the same as in Example 1, except that:

[0189] In a method for preparing a matte transfer film, in step S3, the reverse placement of the radiation source is replaced with the forward placement of the radiation source.

[0190] Comparative Example 6

[0191] Everything else is the same as in Example 1, except that:

[0192] In a method for preparing a matte transfer film, the coating solution II comprises the following raw materials in parts by weight:

[0193] 35 parts of amino acrylate;

[0194] 25 parts of dual-curing resin;

[0195] 28 parts of reactive diluent;

[0196] 0.1 parts of defoamer;

[0197] 0.3 parts leveling agent.

[0198] Comparative Example 7

[0199] Everything else is the same as in Example 1, except that:

[0200] In a method for preparing a matte transfer film, the coating solution II comprises the following raw materials in parts by weight:

[0201] 35 parts of amino acrylate;

[0202] 45 parts of dual-curing resin;

[0203] 28 parts of reactive diluent;

[0204] 0.1 parts of defoamer;

[0205] 0.3 parts leveling agent.

[0206] Comparative Example 8

[0207] Everything else is the same as in Example 1, except that:

[0208] A method for preparing a matte transfer film, wherein in the formulation of coating solution II,

[0209] The dual-curing resin was replaced with hydroxyl-free polyurethane acrylic resin CN964 (Sartoma).

[0210] Comparative Example 9

[0211] Everything else is the same as in Example 1, except that:

[0212] In a method for preparing a coated matte transfer film,

[0213] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 14g:14g.

[0214] Comparative Example 10

[0215] Everything else is the same as in Example 1, except that:

[0216] In a method for preparing a coated matte transfer film,

[0217] The reactive diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a ratio of 4.7g:23.3g.

[0218] According to the formulation amounts, the performance of the coated matte transfer film prepared in each embodiment and comparative example of the present invention, and its application in hot-pressed composite fiberboard, was tested. The specific test methods are as follows:

[0219] The physical and chemical properties were tested according to the national standard GB / T17657-2022 Test Methods for Physical and Chemical Properties of Wood-based Panels and Decorative Wood-based Panels; the appearance was visually inspected to check for defects such as obvious flow marks, pinholes, and shrinkage cavities after the film was removed. The gloss was tested using a gloss meter.

[0220] The test results are shown in Table 1:

[0221]

[0222] As can be seen from the data in the table above, the coated matte transfer film provided in the various embodiments of the present invention has excellent matte effect, stain resistance and flexibility, which significantly improves the practicality and aesthetics of the composite fiberboard.

[0223] As can be observed from Example 1 and Comparative Examples 1-5, different processes significantly affect the performance of the product; as can be observed from Example 1 and Comparative Example 1, excimer lamp radiation produces a high-matte effect; as can be observed from Example 1 and Comparative Example 2, the first EB curing of the matte layer is significant and affects the final performance of the product; as can be observed from Example 1 and Comparative Examples 3-4, the radiation energy of the second EB curing has a key impact on the performance of the product, and reasonable radiation energy can achieve excellent results; as can be observed from Example 1 and Comparative Example 5, the process of forming a transfer layer by EB radiation curing of coating liquid II through the substrate has obvious advantages.

[0224] As can be observed from Example 1 and Comparative Examples 6-10, the formulation of coating liquid II has a direct impact on the performance of the transfer layer; as can be observed from Example 1 and Comparative Examples 6-8, the hydroxyl-containing dual-curing resin has a positive effect on the adhesion of the fiber composite board, and the appropriate dosage has excellent adhesion effect; as can be observed from Example 1 and Comparative Examples 9-10, the appropriate ratio of reactive diluent can effectively balance hardness and toughness, achieving better scratch resistance, crack resistance, etc.

[0225] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A method for preparing a matte transfer film, characterized in that, Includes the following steps: S1: After coating the treatment layer on the surface of the substrate layer, apply coating liquid I, and place it under an excimer lamp for curing to form a matte surface; S2: Place the matte surface face up under the radiation source for the first EB curing to obtain a matte coating layer; S3: After coating the matte layer with coating liquid II, place it in reverse under a radiation source for a second EB curing to obtain a transfer layer; after winding and cutting, a coated matte transfer film is obtained. The reversed radiation source is EB, which radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

2. The method for preparing a matte transfer film as described in claim 1, characterized in that, The substrate layer is made of at least one of PET, PP, PC, ABS, and PMMA, and has a thickness of 30-250 μm.

3. The method for preparing a matte transfer film as described in claim 1, characterized in that, The excimer lamp curing process has an energy density of 500-5000 mW / cm². 2 Radiation time: 0.1-10s; Oxygen content: 1-200ppm.

4. The method for preparing a matte transfer film as described in claim 1, characterized in that, The irradiation dose for the first EB curing is 5-50 kGy, and the irradiation time is 1-10 s; the thickness of the matte coating layer is 5-50 μm.

5. The method for preparing a matte transfer film as described in claim 1, characterized in that, The irradiation dose for the second EB curing is 5-120 kGy, and the irradiation time is 5-30 s; the thickness of the transfer layer is 50-200 μm.

6. The method for preparing a matte transfer film as described in claim 1, characterized in that, The coating liquid II is prepared by mixing amino acrylate, dual-curing resin, reactive diluent and additives to obtain coating liquid II.

7. The method for preparing a matte transfer film as described in claim 1, characterized in that, The coating liquid II comprises the following raw materials in parts by weight: Amino acrylate: 30-40 parts; Dual-curing resin: 30-40 parts; Reactive diluent: 15-40 minutes; Additives: 0.3-0.5 parts.

8. The method for preparing a matte transfer film as described in claim 6, characterized in that, The dual-curing resin is a resin containing a multi-hydroxyl structure.

9. The method for preparing a matte transfer film as described in claim 6, characterized in that, The active diluent is a mixture of monofunctional and difunctional components at a ratio of 5-10g:10-30g.

10. The method for preparing a matte transfer film as described in claim 9, characterized in that, The monofunctional reactive diluent has a soft monomer structure and includes laurate acrylate; and the difunctional reactive diluent includes hexanediol diacrylate.

11. A coated matte transfer film, characterized in that, The coated matte transfer film is prepared by the method of any one of claims 1-10, wherein the coated matte transfer film is provided with a substrate layer, a treatment layer, a coated matte layer and a transfer layer from top to bottom.

12. The application of the matte transfer film as described in claim 11 in the surface multifunctionalization of composite fiber materials, engineering plastic materials, inorganic materials, and metallic materials, characterized in that... The transfer layer of the coated matte transfer film is brought into contact with the impregnated hydroxyl resin film paper and laid on the surface of composite fiber materials, engineering plastic materials, inorganic materials, metal materials, etc. After hot pressing, the coated matte transfer film is peeled off so that the transfer layer adheres to the surface of the material, achieving a super matte effect on the material. At the same time, it can endow the material with special functionalities such as antibacterial, bactericidal, antiviral, antistatic, strong acid and alkali resistance, fingerprint resistance, scratch resistance, and self-cleaning.

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