Coated matte transfer film as well as preparation method and application thereof

Abstract

The invention provides a coated matte transfer film and a preparation method and application thereof, and relates to the technical field of surface multifunctionalization of composite fiber materials, engineering plastic materials, inorganic materials, metal materials and the like, the preparation method of the coated matte transfer film comprises the following steps: S1, firstly coating the surface of a base material layer with a treatment layer, then coating the surface of the base material layer with a coating liquid I, and finally coating the surface of the base material layer with a coating liquid II; performing excimer curing to form a matte surface; s2, then EB curing is carried out, the coating liquid I is completely cured, and a coating matte layer is obtained; and S3, after the surface of the coating matte layer is coated with the coating liquid II, EB curing is conducted, the coating liquid II is pre-cured, a transfer layer is obtained, and then preparation of the coating matte transfer film is completed. According to the preparation method of the coating matte transfer film provided by the invention, the excimer curing and EB curing technologies and the synergistic effect of all the components are utilized, so that the prepared coating matte transfer film can endow the surface of a composite fiber material, an engineering plastic material, an inorganic material, a metal material and the like with a super matte effect; meanwhile, the material can be endowed with special functions of resisting bacteria, killing bacteria, resisting viruses, preventing static electricity, resisting strong acid and strong alkali, resisting fingerprints, resisting scratches and self-cleaning, so that the functionality and practicability of a composite fiber material, an engineering plastic material, an inorganic material and a metal material are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surface multifunctionalization of composite fiber materials, engineering plastic materials, inorganic materials, metal materials, etc., and in particular to a matte-coated transfer film and a preparation method and application thereof. Background Art

[0002] In contemporary society, with the continuous development of economy and the improvement of people's living standards, the requirements for the aesthetics, durability and functionality of living environment are also constantly increasing. Various advanced materials such as composite fiber materials, engineering plastic materials, inorganic materials, metal materials, etc. are widely used in the construction field. Due to the cost-effectiveness and easy processing characteristics of these materials, they have been widely used in furniture manufacturing, interior decoration and functional finishing industries.

[0003] However, existing functional surface treatment technologies for materials have some limitations, especially in achieving an ideal matte effect, which often requires adding a large amount of matting powder to the surface coating material to reduce the glossiness. Matting powder, as an insoluble solid particle, can scatter light, thereby reducing the glossiness of the material surface and achieving a matte effect. However, matting powder cannot achieve a super matte effect, and excessive matting powder may deteriorate the surface coating of the material and the overall performance of the material. Summary of the invention

[0004] In order to solve the defects in the prior art that the surfaces of composite fiber materials, engineering plastic materials, inorganic materials and metal materials cannot achieve super matte effects, antibacterial, antiviral and other functions, the present invention discloses a method for preparing a coated matte transfer film, which utilizes excimer curing and EB curing technology, as well as the synergistic effect of various components, so that the prepared coated matte transfer film can give the material a super matte effect, and can give the composite fiber materials, engineering plastic materials, inorganic materials, metal materials and the like antibacterial, antiviral, antistatic, scratch resistance, pollution resistance and other properties, thereby improving the practicality and aesthetics of the material.

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

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

[0007] S1: After coating the treatment layer on the surface of the substrate, coating liquid I is applied, and curing is performed under an excimer lamp to form a matte surface;

[0008] S2: placing the matte surface forwardly under a radiation source for the first EB curing to obtain a coated matte layer;

[0009] S3: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

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

[0011] Further,

[0012] The material of the substrate is selected from at least one of PET, PP, PC, ABS and PMMA, and has a thickness of 30-250um.

[0013] Furthermore, the excimer lamp curing process has an energy density of 500-5000 mW / cm2, a radiation time of 1-10 s, and an oxygen content of 1-200 ppm.

[0014] Furthermore, the first EB curing has a radiation dose of 5-50 kGy and a radiation time of 1-10 s; and

[0015] The thickness of the matte coating layer is 5-50 μm.

[0016] Furthermore, the second EB curing has 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 um.

[0017] Further,

[0018] The coating solution II comprises the following raw materials in parts by weight:

[0019] Aminoacrylate 30-40 parts;

[0020] 30-40 parts of dual-cure resin;

[0021] Active diluent 15-40 parts;

[0022] Additives 0.3-0.5 parts.

[0023] Furthermore, the dual-cure resin is a polyhydroxy structure.

[0024] Further,

[0025] The active diluent is a mixture of monofunctional and difunctional diluents in a dosage ratio of 5-10g:10-30g.

[0026] Furthermore, the monofunctional reactive diluent is a soft monomer structure, including lauric acid acrylate; and

[0027] The difunctional reactive diluent includes hexanediol diacrylate.

[0028] Another object of the present invention is to provide a matte coated transfer film prepared by the above method, wherein the matte coated transfer film is provided with a substrate layer, a treatment layer, a matte coated layer and a transfer layer in sequence from top to bottom.

[0029] Another object of the present invention is to provide an application of a matte coated transfer film in composite fiber materials, engineering plastic materials, inorganic materials, and metal materials. The transfer layer of the matte coated transfer film is contacted with a hydroxyl resin impregnated adhesive film paper, and hot pressed, laminated, and peeled off to make the transfer layer adhere to the surfaces of composite fiber materials, engineering plastic materials, inorganic materials, metal materials, and the like.

[0030] The present invention has the following beneficial effects:

[0031] (1) The present invention discloses a method for preparing a matte coated transfer film, which utilizes excimer curing and EB curing technology to ensure that the transfer layer achieves excellent physical and chemical properties; through the synergistic effect of each component, the prepared matte coated transfer film can provide super matte, antibacterial, antiviral, antistatic, anti-scratch and other effects on the surface of the decorative plate. In addition, the application process of the method is simple and does not require any adjustment to the existing hot pressing process.

[0032] (2) The present 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 a material having basic radiation curing function. Based on the subsequent hot pressing process, a dual-curing resin with a multi-hydroxy structure is specially added, which can be chemically bonded with the subsequent hydroxyl resin impregnated adhesive film paper and has high adhesion. In addition, the coating liquid II is formulated to have high hardness and toughness, etc., which can meet the winding requirements and can be used for the high scratch resistance requirements of composite fiber boards.

[0033] (3) The present invention discloses a method for preparing a matte coating transfer film, which uses a technology combining an excimer lamp and EB curing; first, a 172nm excimer curing technology is used to form a high matte coating surface, and after the first EB curing, a fully cured coating with a high matte is formed; second, a reverse EB radiation process is used when coating the coating liquid II, and the EB radiation energy range is selected. According to the EB radiation gradient curing mechanism, the coating liquid II is formed into a semi-cured state, and the surface layer has a lower degree of curing than the bottom layer, which is convenient for subsequent hot pressing transfer. This technology effectively improves production efficiency and can obtain a transfer film with high matte, retractable, hot pressing and other functions. DETAILED DESCRIPTION

[0034] The present invention is now further described in detail. The embodiments described below are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0035] In order to solve the defect in the prior art that a matting agent needs to be additionally added to the surface of a composite fiber material plate to achieve a matte finish, an embodiment of the present invention provides a method for preparing a matte transfer film, comprising the following steps:

[0036] S1: coating liquid I on the surface of the substrate with the coating treatment layer, preheating at 60° C. for 5 min, and curing under a 172 nm excimer lamp to form a matte surface;

[0037] S2: placing the matte surface forwardly under a radiation source for the first EB curing to obtain a coated matte layer;

[0038] S3: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

[0039] The reverse placement of the radiation source means that EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0040] The coating method described in the present invention is selected from at least one of micro-concave coating, comma blade coating and slit coating to ensure the coating thickness; according to the thickness of the coated matte layer and the transfer layer, the coating method of the matte layer described in the following embodiments of the present invention is micro-concave coating; the coating method of the transfer layer is comma blade coating.

[0041] The material of the substrate is selected from at least one of PET, PP, PC, ABS, and PMMA; and the substrates described in the following embodiments of the present invention are all PET-50 μm.

[0042] The excimer lamp curing process has an energy density of 500-5000mW / cm2, which can be 1000mW / cm2, 2000mW / cm2, 3000mW / cm2, 4000mW / cm2, 5000mW / cm2 or a range value composed of any two values; the radiation time is 1-10s, which can be 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s; the oxygen content is 1-200ppm, which can be 5ppm, 10ppm, 20ppm, 50ppm, 80ppm, 100ppm, 120ppm, 150ppm, 200ppm.

[0043] The coating liquid I is a commonly used UV coating liquid. To achieve the above-mentioned effect, the composition of the coating liquid I described in the following embodiments of the present invention is: 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; 10.1 parts of defoamer BYK 1791; and 0.2 parts of leveling agent DOWSIL 204SL.

[0044] The first EB curing has a radiation dose of 5-50 kGy, which may be 5 kGy, 10 kGy, 20 kGy, 30 kGy, 40 kGy, or 50 kGy; and a radiation time of 1-10 s, which may be 2 s, 4 s, 6 s, 8 s, or 10 s; and

[0045] 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 a range consisting of any two values.

[0046] The second EB curing has 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 a range of any 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, 30 s; the process is adjusted accordingly according to the thickness of the substrate and in coordination with the subsequent hot pressing process, in order to achieve the best pre-curing effect; taking a 50 um thick substrate as an example, using a voltage of 150 Kev and a dose range of 5-120 KGY, the pre-curing of the transfer layer can be achieved; after EB curing, the coating liquid forms a cured film on the surface of the substrate and can be peeled off. At this time, since the peeled transfer film loses the supporting substrate, its structure is relatively fragile; but the surface of the film after EB curing is dry, which allows the film to be processed by subsequent winding, cutting and other processing operations.

[0047] as well as

[0048] The thickness of the transfer layer is 50-200 um, and 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 a range consisting of any two values.

[0049] The coating solution II comprises the following raw materials in parts by weight:

[0050] Aminoacrylate 30-40 parts;

[0051] 30-40 parts of dual-cure resin;

[0052] Active diluent 15-40 parts;

[0053] Additives 0.3-0.5 parts.

[0054] The amino acrylate is an amino-modified acrylate, which has excellent adhesion, hardness and radiation curability; and the amino acrylates described in the following embodiments of the present invention are all of the grade 628A80.

[0055] The dual-cure resin is a polyhydroxy structure, which can participate in the subsequent hot-pressing curing with the hydroxy resin adhesive film paper to provide high bonding strength; at the same time, it can be radiation-cured to participate in the reaction of the coating, which has the effect of simultaneously improving the cohesive force and the bonding strength; the dual-cure resins described in the following embodiments of the present invention are all PRD 3030 brand.

[0056] The active diluent is a mixture of monofunctional and difunctional diluents in a ratio of 5-10g:10-30g;

[0057] The monofunctional reactive diluent is a soft monomer structure, including lauric acid acrylate; it can also be a mixture of lauric acid acrylate and one or more of hydroxyethyl acrylate, hydroxypropyl acrylate, isooctyl acrylate, octadecyl acrylate, 2-methoxyethyl acrylate, 2-butoxyethyl acrylate, 2-dimethylaminoethyl acrylate, ethoxyethoxyethyl acrylate, and hexanediol methoxymonoacrylate;

[0058] as well as

[0059] The difunctional active diluent includes hexanediol diacrylate; it can also be a mixture of hexanediol diacrylate and one or more of 1,3-propylene glycol diacrylate, 1,4-butylene glycol diacrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, dipropylene glycol diacrylate, triglycerol diacrylate, neopentyl glycol diacrylate, ethoxylated neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, cyclohexanedimethanol diacrylate, and ethoxylated bisphenol A diacrylate.

[0060] The auxiliary agents include leveling agents, defoaming agents, etc.

[0061] The leveling agent is Tego Rad 2100.

[0062] The defoamer is BYK-1748.

[0063] The present invention provides a matte coated transfer film, which is prepared by the above method. The matte coated transfer film is provided with a substrate layer, a treatment layer, a matte coated layer and a transfer layer in sequence from top to bottom.

[0064] The present invention also provides an application of a matte coated transfer film in a hot-pressed composite fiber laminate, wherein the transfer layer of the matte coated transfer film is contacted with an amino resin adhesive film paper, hot pressed, laminated, and peeled off, so that the transfer layer can be adhered to the surface of composite fiber materials, engineering plastic materials, inorganic materials, and metal materials to realize the functionalization of the materials.

[0065] In the hot pressing process, the high temperature accelerates the flow of the uncured hydroxy resin glue and covers the entire contact surface. At the same time, under the action of high pressure, the matte coated transfer film and the hydroxy resin glue achieve mutual penetration. Because there are a large number of hydroxymethyl groups in the hydroxy resin glue, these hydroxymethyl groups will undergo a dehydration reaction with the hydroxyl groups in the dual-cured resin at high temperature to form a chemical bond. Under the action of the chemical bond, the matte coated transfer film and the hydroxy resin are well bonded; at the same time, the internal molecular chain of the matte coated transfer film is further cross-linked and cured under the action of this chemical bond. When the hydroxy resin adhesive film paper is hot-pressed and bonded, the wear-resistant surface paper on the uppermost surface is removed and replaced with the matte coated transfer film of the present invention. After high-temperature hot pressing, the transfer layer of the matte coated transfer film will be tightly penetrated and combined with the hydroxy resin adhesive film paper to form a protective layer with good physical and chemical indicators and decorative effects; and the matte coated transfer film substrate can be used as a protective film during the transportation and installation of the board, and can be torn off after installation.

[0066] The material used as the substrate in the present invention can be one of composite fiber materials, engineering plastic materials, inorganic materials, and metal materials; and the substrates described in the following embodiments of the present invention are all composite fiber laminates.

[0067] The hydroxy 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; and the amino resin film paper described in the following embodiments of the present invention is melamine film paper.

[0068] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below.

[0069] Example 1

[0070] A method for preparing a matte coated transfer film comprises the following steps:

[0071] S1: After coating the treatment layer on the surface of the substrate, coating solution I is applied, preheated at 60° C. for 5 min, and placed under a 172 nm excimer lamp for excimer lamp curing to form a matte surface;

[0072] S2: placing the matte surface forwardly under a radiation source for the first EB curing to obtain a coated matte layer;

[0073] S3: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

[0074] The reverse placement of the radiation source means that EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0075] The excimer lamp curing process has an energy density of 3000 mW / cm2, a radiation time of 4 s, and an oxygen content of 100 ppm.

[0076] The first EB curing has a radiation dose of 8 kGy and a radiation time of 3 s; and

[0077] The thickness of the matte coating layer is 5 μm.

[0078] The second EB curing has a radiation dose of 40 kGy and a radiation time of 6 s; and

[0079] The thickness of the transfer layer is 150 um.

[0080] The coating solution II comprises the following raw materials in parts by weight:

[0081] 35 parts of aminoacrylate;

[0082] Dual-cure resin 35 parts;

[0083] Active diluent 28 parts;

[0084] Defoaming agent 0.1 part;

[0085] 0.3 parts of leveling agent.

[0086] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 7g:21g.

[0087] This embodiment also provides a matte coated transfer film, which is prepared by the above method. The matte coated transfer film is provided with a substrate layer, a treatment layer, a matte coated layer and a transfer layer in sequence from top to bottom.

[0088] This embodiment further provides the application of the matte coated transfer film in the hot pressed composite fiber laminate, wherein the transfer layer of the matte coated transfer film is contacted with the amino resin adhesive film paper, hot pressed, laminated and peeled off, so that the transfer layer can be adhered to the surface of the composite fiber board.

[0089] Example 2

[0090] A method for preparing a matte coated transfer film comprises the following steps:

[0091] S1: After coating the treatment layer on the surface of the substrate, coating solution I is applied, preheated at 60° C. for 5 min, and placed under a 172 nm excimer lamp for excimer lamp curing to form a matte surface;

[0092] S2: placing the matte surface forwardly under a radiation source for the first EB curing to obtain a coated matte layer;

[0093] S3: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

[0094] The reverse placement of the radiation source means that EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0095] The excimer lamp curing process has an energy density of 1000 mW / cm2, a radiation time of 10 s, and an oxygen content of 5 ppm.

[0096] The first EB curing has a radiation dose of 5 kGy and a radiation time of 5 s; and

[0097] The thickness of the matte coating layer is 10 μm.

[0098] The second EB curing has a radiation dose of 5 kGy and a radiation time of 10 s; and

[0099] The thickness of the transfer layer is 50 um.

[0100] The coating solution II comprises the following raw materials in parts by weight:

[0101] 40 parts of aminoacrylate;

[0102] Dual-cure resin 30 parts;

[0103] Active diluent 20 parts;

[0104] Defoaming agent 0.1 part;

[0105] 0.4 parts of leveling agent.

[0106] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 10g:10g.

[0107] This embodiment also provides a matte coated transfer film, which is prepared by the above method. The matte coated transfer film is provided with a substrate layer, a treatment layer, a matte coated layer and a transfer layer in sequence from top to bottom.

[0108] This embodiment further provides the application of the matte coated transfer film in the hot pressed composite fiber laminate, wherein the transfer layer of the matte coated transfer film is contacted with the amino resin adhesive film paper, hot pressed, laminated and peeled off, so that the transfer layer can be adhered to the surface of the composite fiber board.

[0109] Example 3

[0110] A method for preparing a matte coated transfer film comprises the following steps:

[0111] S1: After coating the treatment layer on the surface of the substrate, coating solution I is applied, preheated at 60° C. for 5 min, and placed under a 172 nm excimer lamp for excimer lamp curing to form a matte surface;

[0112] S2: placing the matte surface forwardly under a radiation source for the first EB curing to obtain a coated matte layer;

[0113] S3: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

[0114] The reverse placement of the radiation source means that EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0115] The excimer lamp curing process has an energy density of 5000 mW / cm2, a radiation time of 2 s, and an oxygen content of 200 ppm.

[0116] The first EB curing has a radiation dose of 10 kGy and a radiation time of 2 s; and

[0117] The thickness of the matte coating layer is 15 μm.

[0118] The second EB curing has a radiation dose of 60 kGy and a radiation time of 3 s; and

[0119] The thickness of the transfer layer is 200 um.

[0120] The coating solution II comprises the following raw materials in parts by weight:

[0121] 30 parts of aminoacrylate;

[0122] Dual-cure resin 40 parts;

[0123] 35 parts of active diluent;

[0124] Defoaming agent 0.1 part;

[0125] 0.2 parts of leveling agent.

[0126] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 5g:30g.

[0127] This embodiment also provides a matte coated transfer film, which is prepared by the above method. The matte coated transfer film is provided with a substrate layer, a treatment layer, a matte coated layer and a transfer layer in sequence from top to bottom.

[0128] This embodiment further provides the application of the matte coated transfer film in the hot pressed composite fiber laminate, wherein the transfer layer of the matte coated transfer film is contacted with the amino resin adhesive film paper, hot pressed, laminated and peeled off, so that the transfer layer can be adhered to the surface of the composite fiber board.

[0129] Example 4

[0130] The rest is the same as in Example 1, except that:

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

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

[0133] 35 parts of aminoacrylate;

[0134] Dual-cure resin 30 parts;

[0135] Active diluent 28 parts;

[0136] Defoaming agent 0.1 part;

[0137] 0.3 parts of leveling agent.

[0138] Example 5

[0139] The rest is the same as in Example 1, except that:

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

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

[0142] 35 parts of aminoacrylate;

[0143] Dual-cure resin 40 parts;

[0144] Active diluent 28 parts;

[0145] Defoaming agent 0.1 part;

[0146] 0.3 parts of leveling agent.

[0147] Example 6

[0148] The rest is the same as in Example 1, except that:

[0149] In a method for preparing a matte coated transfer film,

[0150] The coating solution II comprises the following raw materials in parts by weight:

[0151] Aminoacrylate 35 parts;

[0152] Dual-cure resin 35 parts;

[0153] Active diluent 20 parts;

[0154] Defoaming agent 0.1 part;

[0155] 0.3 parts of leveling agent.

[0156] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 5g:15g.

[0157] Example 7

[0158] The rest is the same as in Example 1, except that:

[0159] In a method for preparing a matte coated transfer film,

[0160] The coating solution II comprises the following raw materials in parts by weight:

[0161] Aminoacrylate 35 parts;

[0162] Dual-cure resin 35 parts;

[0163] 40 parts of active diluent;

[0164] Defoaming agent 0.1 part;

[0165] 0.3 parts of leveling agent.

[0166] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 10g:30g.

[0167] Example 8

[0168] The rest is the same as in Example 1, except that:

[0169] In a method for preparing a matte coated transfer film,

[0170] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 9.3 g:18.7 g.

[0171] Example 9

[0172] The rest is the same as in Example 1, except that:

[0173] In a method for preparing a matte coated transfer film,

[0174] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 5.5 g:22.5 g.

[0175] The following comparative examples are compared with Example 1:

[0176] Comparative Example 1

[0177] The rest is the same as in Example 1, except that:

[0178] A method for preparing a matte coated transfer film comprises the following steps:

[0179] S1: After coating the treatment layer on the surface of the substrate, coating the coating liquid I, placing it forward under a radiation source for the first EB curing, and obtaining a matte coating layer;

[0180] S2: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

[0181] The reverse placement of the radiation source means that EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0182] Comparative Example 2

[0183] The rest is the same as in Example 1, except that:

[0184] A method for preparing a matte coated transfer film comprises the following steps:

[0185] S1: After coating the treatment layer on the surface of the substrate, coating solution I is applied, preheated at 60° C. for 5 min, and placed under a 172 nm excimer lamp for excimer lamp curing to form a matte surface;

[0186] S2: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film;

[0187] The reverse placement of the radiation source means that EB radiates from one side of the substrate surface, that is, EB radiates through the substrate to the coating liquid II for curing.

[0188] Comparative Example 3

[0189] The rest is the same as in Example 1, except that:

[0190] In a method for preparing a matte coated transfer film,

[0191] The second EB curing has a radiation dose of 1 kGy.

[0192] Comparative Example 4

[0193] The rest is the same as in Example 1, except that:

[0194] In a method for preparing a matte coated transfer film, the second EB curing has a radiation dose of 125 kGy.

[0195] Comparative Example 5

[0196] The rest is the same as in Example 1, except that:

[0197] A method for preparing a matte coated transfer film, in S3, the reverse placement of the radiation source is replaced by forward placement of the radiation source.

[0198] Comparative Example 6

[0199] The rest is the same as in Example 1, except that:

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

[0201] 35 parts of aminoacrylate;

[0202] Dual-cure resin 25 parts;

[0203] Active diluent 28 parts;

[0204] Defoaming agent 0.1 part;

[0205] 0.3 parts of leveling agent.

[0206] Comparative Example 7

[0207] The rest is the same as in Example 1, except that:

[0208] In a method for preparing a matte coated transfer film, the coating solution II comprises the following raw materials in parts by weight:

[0209] 35 parts of aminoacrylate;

[0210] Dual-cure resin 45 parts;

[0211] Active diluent 28 parts;

[0212] Defoaming agent 0.1 part;

[0213] 0.3 parts of leveling agent.

[0214] Comparative Example 8

[0215] The rest is the same as in Example 1, except that:

[0216] A method for preparing a matte transfer film, wherein the coating liquid II has a formula:

[0217] The dual cure resin was replaced with a hydroxy-free polyurethane acrylic resin CN964 (Sartomer).

[0218] Comparative Example 9

[0219] The rest is the same as in Example 1, except that:

[0220] In a method for preparing a matte coated transfer film,

[0221] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 14g:14g.

[0222] Comparative Example 10

[0223] The rest is the same as in Example 1, except that:

[0224] In a method for preparing a matte coated transfer film,

[0225] The active diluent is a mixture of lauric acid acrylate and hexanediol diacrylate in a dosage ratio of 4.7 g:23.3 g.

[0226] According to the formula amount, the matte coated transfer films prepared in the embodiments of the present invention and the comparative examples and the properties of the hot pressed composite fiberboard were tested. The specific test method is as follows:

[0227] The physical and chemical properties are tested in accordance with the national standard "GB / T17657-2022 Test Methods for Physical and Chemical Properties of Artificial Boards and Faced Artificial Boards"; the appearance is visually inspected to see if there are obvious flow marks, pinholes, shrinkage holes and other defects after the film is torn off. The gloss is tested using a gloss meter.

[0228] The test results are shown in Table 1:

[0229] Table 1

[0230] Test items Appearance Scratch resistant Pollution resistant Paint film adhesion Cracking resistance Gloss / 60° Example 1 OK Level 5 Level 5 Level 6 Level 5 14.1 Example 2 OK Level 5 Level 4 Level 6 Level 5 15.7 Example 3 OK Level 5 Level 5 Level 6 Level 5 14.9 Example 4 OK Level 5 Level 5 Level 5 Level 5 14.8 Example 5 OK Level 5 Level 5 Level 6 Level 5 15.3 Example 6 OK Level 5 Level 5 Level 6 Level 4 14.8 Example 7 OK Level 5 Level 5 Level 6 Level 5 15.5 Example 8 OK Level 4 Level 5 Level 6 Level 5 14.6 Example 9 OK Level 5 Level 5 Level 6 Level 4 15.6 Comparative Example 1 OK Level 5 Level 5 Level 6 Level 5 77.4 Comparative Example 2 Obvious flow marks Level 3 Level 3 Level 5 Level 5 13.8 Comparative Example 3 OK Level 4 Level 4 Level 4 Level 3 14.5 Comparative Example 4 OK Level 5 Level 5 Level 5 Level 2 14.4 Comparative Example 5 OK Level 3 Level 3 Level 2 Level 5 14.1 Comparative Example 6 OK Level 4 Level 5 Level 4 Level 5 14.3 Comparative Example 7 OK Level 4 Level 5 Level 6 Level 3 15.5 Comparative Example 8 OK Level 5 Level 5 Level 2 Level 5 15.0 Comparative Example 9 Slight flow marks Level 4 Level 4 Level 6 Level 5 14.9 Comparative Example 10 OK Level 5 Level 5 Level 6 Level 3 14.7

[0231] It can be seen from the data in the above table that the matte coated transfer film provided by each embodiment of the present invention has excellent matte effect, pollution resistance, flexibility and other characteristics, which significantly improves the practicality and aesthetics of the composite fiberboard.

[0232] It can be observed from Example 1 and Comparative Examples 1-5 that the difference in process will obviously affect the performance of the product; it can be observed from Example 1 and Comparative Example 1 that the radiation of the excimer lamp will form a high matte effect; it can be observed from Example 1 and Comparative Example 2 that the first EB is of great significance to the completion of the curing of the matte layer and affects the final performance of the product; it can be observed from Example 1 and Comparative Examples 3-4 that the radiation energy of the second EB curing has a key influence on the performance of the product, and reasonable radiation energy can achieve excellent results; it can be observed from Example 1 and Comparative Example 5 that the process of forming a transfer layer by EB through the substrate radiation curing coating liquid II has obvious advantages.

[0233] It can be observed from Example 1 and Comparative Examples 6-10 that the formula of coating liquid II has a direct impact on the performance of the transfer layer; it can be observed from Example 1 and Comparative Examples 6-8 that the hydroxyl-containing dual-cure resin has a positive significance for the adhesion of the fiber composite board, and the appropriate amount has an excellent adhesion effect; it can be observed from Example 1 and Comparative Examples 9-10 that the appropriate ratio of active diluent can effectively balance hardness and toughness, and achieve better scratch resistance, crack resistance, etc.

[0234] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A method for preparing a matte coated transfer film, characterized in that: The following steps are involved: S1: After coating the treatment layer on the surface of the substrate layer, coating liquid I is coated and placed under an excimer lamp for curing to form a matte surface; S2: placing the matte surface forwardly under a radiation source for the first EB curing to obtain a coated matte layer; S3: After coating the coating liquid II on the surface of the matte layer, the coating liquid is placed under a radiation source for a second EB curing to obtain a transfer layer; the coating liquid is rolled up and cut to obtain a matte transfer film; The reversely placed radiation source is irradiated by EB 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 coated transfer film according to claim 1, characterized in that: The material of the substrate layer is selected from at least one of PET, PP, PC, ABS, and PMMA, and has a thickness of 30-250 um.

3. The method for preparing a matte coated transfer film according to claim 1, characterized in that: The excimer lamp curing process has an energy density of 500-5000mW / cm 2 , radiation time 0.1-10s, oxygen content 1-200ppm.

4. The method for preparing a matte coated transfer film according to claim 1, characterized in that: The radiation dose of the first EB curing is 5-50 kGy, and the radiation time is 1-10 s; the thickness of the matte coating layer is 5-50 um.

5. The method for preparing a matte coated transfer film according to claim 1, characterized in that: The radiation dose of the second EB curing is 5-120 kGy, and the radiation time is 5-30 s; the thickness of the transfer layer is 50-200 um.

6. The method for preparing a matte coated transfer film according to claim 1, wherein: The coating liquid II is prepared according to the following method: amino acrylate, dual-curing resin, active diluent and auxiliary agent are mixed to obtain coating liquid II.

7. The method for preparing a matte coated transfer film according to claim 1, characterized in that: The coating solution II comprises the following components in parts by weight: Aminoacrylate: 30-40 parts; Dual-curing resin: 30-40 parts; Active diluent: 15-40 points; Additives: 0.3-0.5 parts.

8. The method for preparing a matte coated transfer film according to claim 6, wherein: The dual-cure resin is a resin containing a polyhydroxy structure.

9. The method for preparing a matte coated transfer film according to claim 6, wherein: The active diluent is a mixture of monofunctional and difunctional diluents in a dosage ratio of 5-10g:10-30g.

10. The method for preparing a matte coated transfer film according to claim 9, characterized in that: The monofunctional reactive diluent is a soft monomer structure, including lauric acid acrylate; and the difunctional reactive diluent includes hexanediol diacrylate.

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

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