Anti-fingerprint functional coating, ultralow-gloss skin-touch anti-fingerprint film as well as preparation method and application of ultralow-gloss skin-touch anti-fingerprint film

Abstract

The invention provides an anti-fingerprint functional coating, an ultralow-gloss skin-touch anti-fingerprint film and a preparation method and application thereof, and belongs to the technical field of anti-fingerprint materials. The anti-fingerprint functional coating provided by the invention is prepared from the following preparation raw materials in percentage by mass: 60-70wt% of UV (Ultraviolet) resin, wherein the UV resin is 3-functional-group urethane acrylate and 6-functional-group matte fluorocarbon acrylate resin; 5 to 10 wt% of a UV monomer; 6 to 10 wt% of thermosetting resin; the thermocuring resin is a single-component thermocuring organic silicon resin; 0 to 1.5 wt% of matting powder; 0.8 to 2 weight percent of a photoinitiator; and 10-17 wt% of an organic solvent. The ultralow-gloss skin-touch anti-fingerprint film prepared from the anti-fingerprint functional coating provided by the invention is good in fingerprint resistance and relatively low in cost.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-fingerprint materials, and in particular to an anti-fingerprint functional coating and an ultra-low gloss skin-feel anti-fingerprint film, and a preparation method and application thereof. Background Art

[0002] The coating forms a rough structure on the surface to scatter the incident light and achieve the purpose of matting. Matt coating has the characteristics of soft gloss and can create a comfortable atmosphere. It has been widely used in wooden furniture, paper printing, leather finishing, indoor and outdoor decoration and other fields. After applying matting paint on the surface of an object, on the one hand, it can protect the surface of the object from water, scratches, aging, etc., and can also re-decorate the surface of the object to achieve a beautiful effect; on the other hand, it can also avoid glare, reduce visual fatigue, hide minor scratches, etc.

[0003] In the related art, the matte coating can be prepared by adding matting powder or by UV excimer curing. However, when the matte coating is prepared by adding matting powder, the amount of matting powder used is relatively high, which can easily reduce the anti-fingerprint effect of the coating. When the matte coating is prepared by UV excimer curing, it is usually necessary to carry out under anaerobic conditions, and the production equipment is expensive. Summary of the invention

[0004] The purpose of the present invention is to provide an anti-fingerprint functional coating and an ultra-low gloss skin-feel anti-fingerprint film and a preparation method and application thereof. The ultra-low gloss skin-feel anti-fingerprint film prepared by using the anti-fingerprint functional coating provided by the present invention has good fingerprint resistance and low cost.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: The present invention provides an anti-fingerprint functional coating, comprising the following raw materials in percentage by weight: 60-70wt% of UV resin, wherein the UV resin is trifunctional polyurethane acrylate and hexafunctional matte fluorocarbon acrylate resin; UV monomer 5~10wt%; 6-10wt% of thermosetting resin; the thermosetting resin is a single-component thermosetting silicone resin; Matting powder 0~1.5wt%; Photoinitiator 0.8~2wt%; Organic solvent 10~17wt%.

[0006] Preferably, the mass ratio of the trifunctional polyurethane acrylate to the hexafunctional matte fluorocarbon acrylate resin is 25-30:35-40; The UV monomer includes 1,6-hexanediol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate or trimethylolpropane triacrylate; The matting powder includes silicon dioxide; The photoinitiator includes 2,4,6-trimethylbenzoyl-dimethylphosphine oxide and 1-hydroxycyclohexyl phenyl ketone, and the mass ratio of the 2,4,6-trimethylbenzoyl-dimethylphosphine oxide to the 1-hydroxycyclohexyl phenyl ketone is 0.4-1:0.4-1; The organic solvent includes at least one of ethyl acetate, butyl acetate, dibasic acid ester, propylene glycol methyl ether acetate, propylene glycol methyl ether and butanone.

[0007] The present invention provides an ultra-low gloss skin-feel anti-fingerprint film, comprising an anti-fingerprint functional layer, a base film layer and an adhesive layer which are stacked in sequence, wherein the anti-fingerprint functional layer is formed by the anti-fingerprint functional coating described in the above technical solution; and the raw materials for preparing the adhesive layer include self-matting PU resin and a curing agent.

[0008] Preferably, the anti-fingerprint functional layer has a thickness of 10-15 μm, the base film layer has a thickness of 20-100 μm, and the adhesive layer has a thickness of 10-30 μm.

[0009] Preferably, the material of the base film layer includes PET, PE, PP, PVDF, ETFE or PVC.

[0010] Preferably, the mass of the curing agent is 1-3wt% of the mass of the self-matting PU resin.

[0011] Preferably, the self-matting PU resin includes self-matting polyurethane resin or self-matting acrylic resin, and the curing agent is isocyanate.

[0012] The present invention provides a method for preparing the ultra-low gloss skin-feel anti-fingerprint film described in the above technical solution, comprising the following steps: The base film is subjected to double-sided corona treatment to obtain a corona base film; Coating a raw material for preparing a glue layer on one surface of the corona base film, forming a glue layer after a first thermal curing, and obtaining a glue layer-base film layer composite material; The other surface of the corona base film in the adhesive layer-base film layer composite material is coated with an anti-fingerprint functional coating, and the anti-fingerprint functional layer is formed by second thermal curing and UV curing in sequence to obtain the ultra-low gloss skin-feel anti-fingerprint film; wherein the second thermal curing time is ≥3 minutes.

[0013] Preferably, the temperature of the first thermal curing is 100-120°C, and the time is 2-4 min; the temperature of the second thermal curing is 120-150°C, and the time is 3-10 min; the distance between the UV lamp used for UV curing and the composite material obtained after the second thermal curing is 20-30 mm, and the light intensity of the UV lamp is 150-200 mJ / cm 2 .

[0014] The present invention provides the use of the anti-fingerprint functional coating described in the above technical solution, the ultra-low gloss skin-feel anti-fingerprint film described in the above technical solution, or the ultra-low gloss skin-feel anti-fingerprint film prepared by the preparation method described in the above technical solution in decorative materials.

[0015] Beneficial effects: The present invention provides an anti-fingerprint functional coating, comprising the following raw materials in percentage by weight: 60-70wt% UV resin, wherein the UV resin is a 3-functional polyurethane acrylate and a 6-functional matte fluorocarbon acrylate resin; 5-10wt% UV monomer; 6-10wt% thermosetting resin; wherein the thermosetting resin is a single-component thermosetting silicone resin; 0-1.5wt% matting powder; 0.8-2wt% photoinitiator; and 10-17wt% organic solvent. The anti-fingerprint functional coating provided by the present invention is compounded with a 3-functional polyurethane acrylate, a 6-functional matte fluorocarbon acrylate resin and a single-component thermosetting silicone resin, and the formed coating surface has a rough structure, good fingerprint resistance, and low gloss at 60°, which is a matte coating. In addition, the coating formed by the anti-fingerprint functional coating of the present invention has excellent anti-scratch performance, strong adhesion, high water contact angle and oil contact angle, and excellent comprehensive performance. The ultra-low gloss skin-feel anti-fingerprint film prepared by the anti-fingerprint functional coating provided by the present invention has good fingerprint resistance and low cost.

[0016] The present invention provides an ultra-low gloss skin-feel anti-fingerprint film, comprising an anti-fingerprint functional layer, a base film layer and an adhesive layer which are sequentially stacked, wherein the anti-fingerprint functional layer is formed by the anti-fingerprint functional coating described in the above technical solution; the raw materials for preparing the adhesive layer include self-matting PU resin and a curing agent. The present invention arranges an anti-fingerprint functional layer and an adhesive layer on both surfaces of the base film layer, respectively, and adopts self-matting PU resin as the matrix material. The adhesive layer formed therefrom is a matte coating. Therefore, the overall 60° gloss of the ultra-low gloss skin-feel anti-fingerprint film is relatively low, reaching an ultra-matte level (60° gloss ≤ 4°), and is an ultra-low gloss film with good fingerprint resistance. In addition, the ultra-low gloss skin-feel anti-fingerprint film of the present invention is a highly light-transmitting film, and has the characteristics of being hydrophobic, oleophobic, anti-fouling, highly scratch-resistant and having a smooth feel.

[0017] The present invention provides a method for preparing the ultra-low gloss skin-feel anti-fingerprint film described in the above technical solution, comprising the following steps: subjecting a base film to double-sided corona treatment to obtain a corona base film; coating a raw material for preparing an adhesive layer on one surface of the corona base film, forming an adhesive layer after a first thermal curing to obtain an adhesive layer-base film layer composite material; coating an anti-fingerprint functional coating on the other surface of the corona base film in the adhesive layer-base film layer composite material, sequentially subjecting the anti-fingerprint functional layer to a second thermal curing and UV curing to obtain the ultra-low gloss skin-feel anti-fingerprint film; wherein the second thermal curing time is ≥3 min. In the present invention, the anti-fingerprint functional layer adopts a combination of thermal curing and UV curing, wherein the surface roughness of the coating and the reflection of the coating to light can be regulated by adjusting the thermal curing time, and then an ultra-low gloss skin-feel anti-fingerprint film with excellent comprehensive performance can be finally prepared by UV curing. Moreover, the method for preparing the ultra-low gloss skin-feel anti-fingerprint film described in the present invention is simple to operate, does not require harsh conditions and complex equipment, and has low production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of coating extinction principle; Figure 2 Schematic diagram of the ultra-low gloss skin-feel anti-fingerprint film of the present invention; Figure 3 This is a SEM image of the glue layer in the ultra-low gloss skin-feel anti-fingerprint film prepared in Example 1; Figure 4 This is a graph showing the relationship between the second thermal curing time and the 60° gloss when preparing the anti-fingerprint functional layer in the anti-fingerprint film; Figure 5 This is the SEM image of the anti-fingerprint functional layer when the second thermal curing time is 0 min; Figure 6 is the AFM image of the anti-fingerprint functional layer when the second thermal curing time is 0 min; Figure 7 This is the SEM image of the anti-fingerprint functional layer when the second thermal curing time is 3 minutes; Figure 8 This is the AFM image of the anti-fingerprint functional layer when the second thermal curing time is 3 minutes; Fig. 9 This is the SEM image of the anti-fingerprint functional layer when the second thermal curing time is 5 minutes; Fig.10 This is the AFM image of the anti-fingerprint functional layer when the second thermal curing time is 5 minutes. DETAILED DESCRIPTION

[0019] The present invention provides an anti-fingerprint functional coating, comprising the following raw materials in percentage by weight: 60-70wt% of UV resin, wherein the UV resin is trifunctional polyurethane acrylate and hexafunctional matte fluorocarbon acrylate resin; UV monomer 5~10wt%; 6-10wt% of thermosetting resin; the thermosetting resin is a single-component thermosetting silicone resin; Matting powder 0~1.5wt%; Photoinitiator 0.8~2wt%; Organic solvent 10~17wt%.

[0020] The coating forms a rough structure on the surface to scatter the incident light and achieve the purpose of extinction. Figure 1 It is a schematic diagram of the coating matting principle. Matt coating has the characteristics of soft gloss and can create a comfortable atmosphere. It has been widely used in the fields of wooden furniture, paper printing, leather finishing, indoor and outdoor decoration, etc. In the related art, the matting coating can be prepared by adding matting powder or by UV excimer curing. However, when the matting coating is prepared by adding matting powder, the amount of matting powder is high, which is easy to reduce the anti-fingerprint effect of the coating; when the matting coating is prepared by UV excimer curing, it is usually necessary to carry out under anaerobic conditions, and the production equipment is expensive. The present invention uses a 3-functional polyurethane acrylate, a 6-functional matte fluorocarbon acrylate resin and a single-component thermal curing silicone resin for compounding. The formed coating surface has a rough structure, good fingerprint resistance, and low 60° gloss, which is a matting coating. In addition, the coating formed by the anti-fingerprint functional coating of the present invention has excellent scratch resistance, strong adhesion, high water contact angle and oil contact angle, and excellent comprehensive performance. The anti-fingerprint functional coating of the present invention is described in detail below.

[0021] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known to those skilled in the art or are prepared by methods well known to those skilled in the art.

[0022] According to the percentage by mass, the anti-fingerprint functional coating of the present invention includes 60-70wt% of UV resin, which can be specifically 61wt%, 62wt%, 63wt%, 64wt%, 65wt%, 66wt%, 67wt%, 68wt%, 69wt% or 70wt%. The UV resin of the present invention is a 3-functional polyurethane acrylate and a 6-functional matte fluorocarbon acrylate resin, and the mass ratio of the 3-functional polyurethane acrylate to the 6-functional matte fluorocarbon acrylate resin can be 25-30:35-40, which can be specifically 28:38, 30:40, 30:38 or 30:35. In an embodiment of the present invention, the 3-functional polyurethane acrylate is specifically purchased from Sartoma Company, model CN929; the 6-functional matte fluorocarbon acrylate resin is specifically purchased from Lan Kelu Company, model L8322. The UV resin in the present invention is a compound of trifunctional polyurethane acrylate and hexafunctional matte fluorocarbon acrylate resin, which can balance the adhesion and hardness of the coating and is beneficial to the improvement of scratch resistance; the fluorine-modified resin effectively reduces the surface energy, improves the water-oil contact angle and anti-fouling performance.

[0023] In terms of mass percentage, the anti-fingerprint functional coating of the present invention includes 5-10wt% of UV monomer, specifically 5wt%, 6wt%, 6.3wt%, 7wt%, 8wt%, 9wt% or 10wt%. As an embodiment of the present invention, the UV monomer may include 1,6-hexanediol diacrylate (HDDA), tripropylene glycol diacrylate (TPGDA), neopentyl glycol diacrylate (NPGDA) or trimethylolpropane triacrylate (TMPTA), specifically 1,6-hexanediol diacrylate. In the embodiment of the present invention, 1,6-hexanediol diacrylate is used as a UV monomer, which has the characteristics of excellent adhesion, outstanding solubility, and fast curing reaction speed, which is conducive to dissolving the photoinitiator and improving the adhesion of the coating.

[0024] In terms of mass percentage, the anti-fingerprint functional coating of the present invention includes 6-10wt% of a thermosetting resin, specifically 6wt%, 7wt%, 8wt%, 9wt% or 10wt%. The thermosetting resin of the present invention is a single-component thermosetting silicone resin. In an embodiment of the present invention, the single-component thermosetting silicone resin is specifically purchased from Jipeng Fluorosilicone Resin Company, model 9604A. The thermosetting resin in the present invention uses a single-component thermosetting silicone resin, which can reduce gloss and increase hardness, and is beneficial to improving the scratch resistance and matte feel of the coating.

[0025] According to the percentage by mass, the anti-fingerprint functional coating of the present invention includes 0-1.5wt% of matting powder, which can be specifically 0wt%, 0.1wt%, 0.2wt%, 0.3wt%, 0.4wt%, 0.5wt%, 0.6wt%, 0.7wt%, 0.8wt%, 0.9wt%, 1wt%, 1.1wt%, 1.2wt%, 1.3wt%, 1.4wt% or 1.5wt%. As an embodiment of the present invention, the matting powder may include silicon dioxide, and the particle size of the silicon dioxide may be 4-8μm. In an embodiment of the present invention, the matting powder is specifically purchased from Grace Company, model C807. In the embodiment of the present invention, the matting powder adopts silicon dioxide, which can improve the roughness of the anti-fingerprint functional layer, which is beneficial to improve the anti-fingerprint performance and create a good feel.

[0026] In terms of mass percentage, the anti-fingerprint functional coating of the present invention includes 0.8-2wt% of the photoinitiator, which can be specifically 0.8wt%, 0.9wt%, 1wt%, 1.1wt%, 1.2wt%, 1.3wt%, 1.4wt%, 1.5wt%, 1.6wt%, 1.7wt%, 1.8wt%, 1.9wt% or 2wt%. As an embodiment of the present invention, the photoinitiator can include 2,4,6-trimethylbenzoyl-dimethylphosphine oxide (TPO) and 1-hydroxycyclohexyl phenyl ketone (photoinitiator 184), and the mass ratio of 2,4,6-trimethylbenzoyl-dimethylphosphine oxide to 1-hydroxycyclohexyl phenyl ketone can be 0.4-1:0.4-1, specifically 1:1. The above-mentioned photoinitiator is used in the embodiment of the present invention, which can be cured quickly, which is beneficial to improve the mechanical strength of the coating and increase the production speed.

[0027] In terms of mass percentage, the anti-fingerprint functional coating of the present invention includes 10-17wt% of an organic solvent, specifically 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 14.2wt%, 14.3wt%, 15wt%, 16wt%, 16.3wt% or 17wt%. As an embodiment of the present invention, the organic solvent may include at least one of ethyl acetate, butyl acetate, dibasic acid ester, propylene glycol methyl ether acetate, propylene glycol methyl ether and butanone, specifically ethyl acetate, butyl acetate, dibasic acid ester, propylene glycol methyl ether acetate, propylene glycol methyl ether or butanone.

[0028] The present invention provides an ultra-low gloss skin-feel anti-fingerprint film, comprising an anti-fingerprint functional layer, a base film layer and a glue layer which are sequentially stacked, wherein the anti-fingerprint functional layer is formed by the anti-fingerprint functional coating described in the above technical solution; the raw materials for preparing the glue layer include self-matting PU resin and a curing agent. The ultra-low gloss skin-feel anti-fingerprint film provided by the present invention has ultra-low gloss, and has good surface hydrophobicity, anti-fouling and anti-fingerprint effects, high scratch resistance, high light transmittance and water boiling resistance. Figure 2 Schematic diagram of the ultra-low gloss skin-feel anti-fingerprint film of the present invention, which is described in detail below.

[0029] The ultra-low gloss skin-feel anti-fingerprint film of the present invention includes a base film layer, and the thickness of the base film layer can be 20-100 μm, specifically 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm. As an embodiment of the present invention, the material of the base film layer can include polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene copolymer (ETFE) or polyvinyl chloride (PVC).

[0030] The ultra-low gloss skin-feel anti-fingerprint film of the present invention includes a glue layer laminated on a surface (back) of the base film layer, and the thickness of the glue layer can be 10-30 μm, specifically 10 μm, 12 μm, 15 μm, 20 μm, 22 μm, 25 μm, 27 μm or 30 μm. As an embodiment of the present invention, the raw materials for preparing the glue layer include self-matting PU resin and curing agent, and the mass of the curing agent can be 1-3wt% of the mass of the self-matting PU resin, specifically 1wt%, 1.2wt%, 1.5wt%, 1.7wt%, 2wt%, 2.3wt%, 2.5wt%, 2.7wt% or 3wt%. As an embodiment of the present invention, the self-matting PU resin may include a self-matting polyurethane resin or a self-matting acrylic resin, wherein the self-matting polyurethane resin may be a water-based self-matting polyurethane resin, and the self-matting acrylic resin may be a solvent-based self-matting acrylic resin; the water-based self-matting polyurethane resin in the embodiment of the present invention is specifically purchased from Stahl Company, model 787; the solvent-based self-matting acrylic resin is specifically purchased from Lancolu Company, model 2600. As an embodiment of the present invention, the curing agent may be an isocyanate, specifically an aliphatic hexamethylene diisocyanate (HDI) trimer; the isocyanate in the embodiment of the present invention is specifically purchased from Covestro, model 3390, 3300 or L75. In the embodiment of the present invention, the above-mentioned type of self-matting PU resin and curing agent are used to prepare the adhesive layer, and the adhesive layer is a matte coating, and has strong adhesion and excellent water boiling resistance; in addition, in the embodiment of the present invention, the thickness of the adhesive layer is limited to the above range, which can increase the bonding force between the adhesive layer and the substrate (such as melamine board), which is conducive to the improvement of adhesion and water boiling resistance.

[0031] The ultra-low gloss skin-feel anti-fingerprint film of the present invention includes an anti-fingerprint functional layer laminated on the other surface (front) of the base film layer, and the anti-fingerprint functional layer is formed by the anti-fingerprint functional coating described in the above technical solution; the thickness of the anti-fingerprint functional layer can be 10~15μm, specifically 10μm, 11μm, 12μm, 13μm, 14μm or 15μm. In the present invention, the anti-fingerprint functional layer is a matte coating with good fingerprint resistance, excellent scratch resistance, strong adhesion, and high water contact angle and oil contact angle. In the embodiment of the present invention, the thickness of the anti-fingerprint functional layer is limited to the above range, which can ensure good gloss and flexibility, and at the same time control the manufacturing cost.

[0032] The present invention provides a method for preparing the ultra-low gloss skin-feel anti-fingerprint film described in the above technical solution, comprising the following steps: The base film is subjected to double-sided corona treatment to obtain a corona base film; Coating a raw material for preparing a glue layer on one surface of the corona base film, forming a glue layer after a first thermal curing, and obtaining a glue layer-base film layer composite material; The other surface of the corona base film in the adhesive layer-base film layer composite material is coated with an anti-fingerprint functional coating, and the anti-fingerprint functional layer is formed by second thermal curing and UV curing in sequence to obtain the ultra-low gloss skin-feel anti-fingerprint film; wherein the second thermal curing time is ≥3 minutes.

[0033] The present invention performs a double-sided corona treatment on a base film to obtain a corona base film. As an embodiment of the present invention, the base film can be a PET film, a PE film, a PP film, a PVDF film, an ETFE film or a PVC film; in the embodiment of the present invention, the base film is subjected to a double-sided corona treatment to make its surface tension reach 40 to 50 dyn / cm, specifically 45 dyn / cm; the present invention has no special limitation on the specific operation method of the double-sided corona treatment, and a method well known to those skilled in the art can be used.

[0034] After obtaining the corona base film, the present invention applies the raw material for preparing the adhesive layer on one surface of the corona base film, forms the adhesive layer after the first thermal curing, and obtains the adhesive layer-base film layer composite material. As one embodiment of the present invention, specifically, the self-matting PU resin is mixed with the curing agent and then coated on one surface of the corona base film. The coating method can be a micro-concave coating method. The present invention does not specifically limit the specific operating steps and conditions of the micro-concave coating method. After the first thermal curing, the adhesive layer of the desired thickness can be obtained. As one embodiment of the present invention, the temperature of the first thermal curing can be 100~120℃, specifically 100℃, 105℃, 110℃, 115℃ or 120℃; the time is 2~4min, specifically 2min, 3min or 4min. In an embodiment of the present invention, specifically, the first thermal curing is carried out in a baking oven; after the first thermal curing is completed, the baking oven is taken out and the obtained adhesive layer-base film layer composite material is rolled up for standby use.

[0035] After obtaining the adhesive layer-base film layer composite material, the present invention coats the other surface of the corona base film in the adhesive layer-base film layer composite material with an anti-fingerprint functional coating, and sequentially undergoes a second thermal curing and UV curing to form an anti-fingerprint functional layer to obtain the ultra-low gloss skin-feel anti-fingerprint film. As an embodiment of the present invention, specifically, UV resin, UV monomer, thermal curing resin, matting powder, photoinitiator and organic solvent are mixed and then coated on the other surface of the corona base film in the adhesive layer-base film layer composite material, and the coating method can be a micro-concave coating method. The present invention has no special restrictions on the specific operating steps and conditions of the micro-concave coating method, and the anti-fingerprint functional layer of the desired thickness can be obtained after the second thermal curing and UV curing. As an embodiment of the present invention, the temperature of the second thermal curing can be 120~150℃, specifically 120℃, 125℃, 130℃, 135℃, 140℃, 145℃ or 150℃; the time of the second thermal curing is ≥3min, for example, it can be 3~60min, further can be 3~10min, specifically 3min, 4min, 5min, 6min, 7min, 8min, 9min or 10min; the time of the second thermal curing is too long, which will reduce the production efficiency and easily cause thermal aging of the coating. In an embodiment of the present invention, the second thermal curing is specifically carried out in a baking oven. As an embodiment of the present invention, the spacing between the UV lamp used for UV curing and the composite material obtained after the second thermal curing can be 20~30mm, specifically 20mm, 22mm, 24mm, 25mm, 26mm, 28mm or 30mm; the light intensity of the UV lamp can be 150~200mJ / cm 2 , specifically 150mJ / cm 2 、160mJ / cm 2 、170mJ / cm 2 、180mJ / cm 2 、190mJ / cm 2 or 200mJ / cm 2 ; The present invention does not have any special limitation on the time of UV curing, as long as it is fully cured. The present invention first performs a second thermal curing, and the surface roughness of the coating and the reflection of light by the coating can be regulated by adjusting the time of the second thermal curing; UV curing is then performed to cross-link the UV resin to form a strong anti-fingerprint functional layer; if the curing sequence is adjusted, it will not be possible to form enough rough structures, resulting in a high-gloss coating, which affects the anti-fingerprint effect. In an embodiment of the present invention, after the UV curing is completed, the obtained ultra-low gloss skin-feel anti-fingerprint film is rolled up for use.

[0036] The present invention provides the application of the anti-fingerprint functional coating described in the above technical solution, the ultra-low gloss skin-feel anti-fingerprint film described in the above technical solution, or the ultra-low gloss skin-feel anti-fingerprint film prepared by the preparation method described in the above technical solution in decorative materials. The anti-fingerprint functional coating described in the present invention can be specifically prepared into an anti-fingerprint film for use in decorative materials, and the anti-fingerprint film can be specifically the ultra-low gloss skin-feel anti-fingerprint film described in the above technical solution, which will not be repeated here; the decorative material can be specifically a decorative sheet. As an embodiment of the present invention, the ultra-low gloss skin-feel anti-fingerprint film described in the present invention can be attached to a single side of a substrate as a decorative sheet, specifically the adhesive layer of the ultra-low gloss skin-feel anti-fingerprint film is directly in contact with the substrate; the substrate can be specifically a melamine board; the laminating conditions can be: the temperature can be 125~135℃, specifically 130℃; the pressure can be 7.5~8.5MPa, specifically 8MPa; the laminating time can be 25~35min, specifically 30min. As an embodiment of the present invention, the decorative sheet can be an indoor panel, the indoor panel can be specifically a furniture panel, and the furniture panel can be specifically a desktop panel.

[0037] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Some of the raw materials used in the following examples are from the following sources: water-based self-matting polyurethane resin is specifically purchased from Starr Company, model 787; isocyanate is specifically purchased from Covestro, model 3390; tri-functional polyurethane acrylate is specifically purchased from Sartomer Company, model CN929; hexa-functional matte fluorocarbon acrylate resin is specifically purchased from Lancolu Company, model L8322; one-component heat-curing silicone resin is specifically purchased from Jipeng Fluorosilicone Resin Company, model 9604A; matting powder is specifically purchased from Grace Company, model C807.

[0039] Example 1 The base film (PET film with a thickness of 50 μm) was subjected to double-sided corona treatment to make its surface tension reach 45 dyn / cm, thereby obtaining a corona base film; A self-matting PU resin (aqueous self-matting polyurethane resin) and a curing agent (isocyanate) are mixed, wherein the mass of the curing agent is 2% of the mass of the self-matting PU resin, and the obtained mixture is coated on one surface of the corona base film by a micro-concave coating method, and a first thermal curing is performed at 120° C. for 3 minutes to form a glue layer (thickness of 15 μm), thereby obtaining a glue layer-base film layer composite material; 66wt% of UV resin (the mass ratio of trifunctional polyurethane acrylate to hexafunctional matte fluorocarbon acrylate resin is 28:38), 6.3wt% of UV monomer (HDDA), 10wt% of thermosetting resin (single-component thermosetting silicone resin), 1.5wt% of matting powder (silicon dioxide, with a particle size of 6-8μm), 1.2wt% of photoinitiator (the mass ratio of TPO to photoinitiator 184 is 1:1) and 15wt% of solvent (specifically butyl acetate) are mixed, and the obtained mixture is coated on the other surface of the corona base film in the adhesive layer-base film layer composite material by micro-concave coating, and a second thermal curing is carried out at 150°C for 5min, and then the distance between the obtained composite material and the UV lamp is controlled to be 20cm, and the UV lamp is illuminated at an intensity of 150mJ / cm 2 UV curing was performed under conditions of 30 ℃ to form an anti-fingerprint functional layer (with a thickness of 10 μm) to obtain an ultra-low gloss skin-feel anti-fingerprint film.

[0040] Example 2 The base film (PET film with a thickness of 100 μm) was subjected to double-sided corona treatment to make its surface tension reach 45 dyn / cm, thereby obtaining a corona base film; A self-matting PU resin (aqueous self-matting polyurethane resin) and a curing agent (isocyanate) are mixed, wherein the mass of the curing agent is 2% of the mass of the self-matting PU resin, the obtained mixture is coated on one surface of the corona base film by a micro-concave coating method, and a first thermal curing is performed at 120° C. for 3 minutes to form a glue layer (thickness of 10 μm), thereby obtaining a glue layer-base film layer composite material; 70wt% of UV resin (the mass ratio of trifunctional polyurethane acrylate to hexafunctional matte fluorocarbon acrylate resin is 30:40), 5wt% of UV monomer (HDDA), 8wt% of thermosetting resin (single-component thermosetting silicone resin), 1.5wt% of matting powder (silicon dioxide, with a particle size of 6-8μm), 1.2wt% of photoinitiator (the mass ratio of TPO to photoinitiator 184 is 1:1) and 14.3wt% of solvent (specifically butyl acetate) are mixed, and the obtained mixture is coated on the other surface of the corona base film in the adhesive layer-base film layer composite material by micro-concave coating, and a second thermal curing is carried out at 150°C for 5min, and then the distance between the obtained composite material and the UV lamp is controlled to be 20cm, and the UV lamp is illuminated at an intensity of 150mJ / cm 2 UV curing was performed under conditions of 30 ℃ to form an anti-fingerprint functional layer (with a thickness of 10 μm) to obtain an ultra-low gloss skin-feel anti-fingerprint film.

[0041] Example 3 The base film (PET film with a thickness of 20 μm) was subjected to double-sided corona treatment to make its surface tension reach 45 dyn / cm, thereby obtaining a corona base film; A self-matting PU resin (aqueous self-matting polyurethane resin) and a curing agent (isocyanate) are mixed, wherein the mass of the curing agent is 2% of the mass of the self-matting PU resin, and the obtained mixture is coated on one surface of the corona base film by a micro-concave coating method, and a first thermal curing is performed at 120° C. for 3 minutes to form a glue layer (thickness of 15 μm), thereby obtaining a glue layer-base film layer composite material; 68wt% of UV resin (the mass ratio of trifunctional polyurethane acrylate to hexafunctional matte fluorocarbon acrylate resin is 30:38), 6wt% of UV monomer (HDDA), 10wt% of thermosetting resin (single-component thermosetting silicone resin), 0wt% of matting powder (silicon dioxide, particle size of 6-8μm), 0.8wt% of photoinitiator (the mass ratio of TPO to photoinitiator 184 is 1:1) and 14.2wt% of solvent (specifically butyl acetate) are mixed, and the obtained mixture is coated on the other surface of the corona base film in the adhesive layer-base film layer composite material by micro-concave coating, and a second thermal curing is carried out at 150°C for 10min, and then the distance between the obtained composite material and the UV lamp is controlled to be 20cm, and the UV lamp is illuminated at an intensity of 200mJ / cm 2 UV curing was performed under conditions of 30 ℃ to form an anti-fingerprint functional layer (with a thickness of 10 μm) to obtain an ultra-low gloss skin-feel anti-fingerprint film.

[0042] Example 4 The base film (PET film with a thickness of 50 μm) was subjected to double-sided corona treatment to make its surface tension reach 45 dyn / cm, thereby obtaining a corona base film; A self-matting PU resin (aqueous self-matting polyurethane resin) and a curing agent (isocyanate) are mixed, wherein the mass of the curing agent is 2% of the mass of the self-matting PU resin, and the obtained mixture is coated on one surface of the corona base film by a micro-concave coating method, and a first thermal curing is performed at 120° C. for 3 minutes to form a glue layer (thickness of 15 μm), thereby obtaining a glue layer-base film layer composite material; 65wt% of UV resin (the mass ratio of trifunctional polyurethane acrylate to hexafunctional matte fluorocarbon acrylate resin is 30:35), 6wt% of UV monomer (HDDA), 10wt% of thermosetting resin (single-component thermosetting silicone resin), 1.5wt% of matting powder (silicon dioxide, particle size of 6-8μm), 1.2wt% of photoinitiator (the mass ratio of TPO to photoinitiator 184 is 1:1) and 16.3wt% of solvent (specifically butyl acetate) are mixed, and the obtained mixture is coated on the other surface of the corona base film in the adhesive layer-base film layer composite material by micro-concave coating, and a second thermal curing is carried out at 150°C for 5min, and then the distance between the obtained composite material and the UV lamp is controlled to be 20cm, and the UV lamp is illuminated at an intensity of 150mJ / cm 2UV curing was performed under conditions of 30 ℃ to form an anti-fingerprint functional layer (with a thickness of 12 μm) to obtain an ultra-low gloss skin-feel anti-fingerprint film.

[0043] Example 5 The base film (PP film with a thickness of 50 μm) was subjected to double-sided corona treatment to make its surface tension reach 45 dyn / cm, thereby obtaining a corona base film; A self-matting PU resin (solvent-based self-matting acrylic resin) and a curing agent (isocyanate) are mixed, wherein the mass of the curing agent is 1% of the mass of the self-matting PU resin, and the obtained mixture is coated on one surface of the corona base film by a micro-concave coating method, and a first thermal curing is performed at 120° C. for 3 minutes to form a glue layer (thickness of 15 μm), thereby obtaining a glue layer-base film layer composite material; 66wt% of UV resin (the mass ratio of trifunctional polyurethane acrylate to hexafunctional matte fluorocarbon acrylate resin is 28:38), 6.3wt% of UV monomer (HDDA), 10wt% of thermosetting resin (single-component thermosetting silicone resin), 1.5wt% of matting powder (silicon dioxide, particle size is 6-8μm), 1.2wt% of photoinitiator (the mass ratio of TPO to photoinitiator 184 is 1:1) and 15wt% of solvent (specifically butyl acetate) are mixed, and the obtained mixture is coated on the other surface of the corona base film in the adhesive layer-base film layer composite material by micro-concave coating, and a second thermal curing is carried out at 150°C for 3min, and then the distance between the obtained composite material and the UV lamp is controlled to be 20cm, and the UV lamp is illuminated at an intensity of 150mJ / cm 2 UV curing was performed under conditions of 30 ℃ to form an anti-fingerprint functional layer (with a thickness of 10 μm) to obtain an ultra-low gloss skin-feel anti-fingerprint film.

[0044] Comparative Example 1 The anti-fingerprint film was prepared by referring to the method of Example 1, except that the second thermal curing was omitted, that is, the raw material for preparing the anti-fingerprint functional layer was coated on the other surface of the corona base film in the adhesive layer-base film layer composite material by micro-concave coating and then directly UV cured.

[0045] Comparative Example 2 An anti-fingerprint film was prepared by referring to the method of Example 1, except that the second thermal curing time was 1 min.

[0046] Comparative Example 3 An anti-fingerprint film was prepared by referring to the method of Example 1, except that the water-based self-matting polyurethane resin was replaced by a common water-based polyurethane resin (i.e., without matting function, purchased from Covestro, model DLC-T).

[0047] Comparative Example 4 An anti-fingerprint film was prepared by referring to the method of Example 1, except that the 6-functional matte fluorocarbon acrylate resin was replaced by a common 6-functional polyurethane acrylate resin (purchased from Sartomer, model number CN975).

[0048] Comparative Example 5 An anti-fingerprint film was prepared by referring to the method of Example 1, except that the single-component heat-curing silicone resin was replaced by a common acrylic resin (purchased from Changxing Company, model number 73333).

[0049] Comparative Example 6 An anti-fingerprint film was prepared according to the method of Example 1, except that the water-based self-matting polyurethane resin was replaced by an ordinary water-based polyurethane resin (i.e., without matting function, purchased from Covestro, model 1016), the 6-functional matte fluorocarbon acrylate resin was replaced by an ordinary 6-functional polyurethane acrylate resin (purchased from Sartomer, model CN975), and the one-component thermal curing silicone resin was replaced by an ordinary acrylic resin (purchased from Changxing Company, model 73333).

[0050] Test Example 1 Figure 3 This is a SEM image of the glue layer in the ultra-low gloss skin-feel anti-fingerprint film prepared in Example 1. The results show that the surface of the glue layer has a micro-nano rough structure, and it is a matte coating with a 60° gloss (tested according to the method in GB 1743-1979) of 10°.

[0051] The method of Example 1 was followed, except that the second thermal curing time was 0 min (i.e., Comparative Example 1), 1 min, 2 min, 3 min (i.e., Example 1), 5 min, 10 min, and 60 min, respectively, and the 60° gloss of the anti-fingerprint functional layer in the anti-fingerprint film prepared under different second thermal curing time conditions was tested. Figure 4 The relationship between the second heat curing time and the 60° gloss when preparing the anti-fingerprint functional layer in the anti-fingerprint film is shown in Table 1. The results show that when the heating time is 0 min, that is, the raw material for the preparation of the anti-fingerprint functional layer is coated on the other surface of the corona base film in the adhesive layer-base film composite material by micro-concave coating, and then UV curing is directly performed, the glossiness of the surface of the obtained anti-fingerprint functional layer is 38.5°. After heating at 150°C for 1 min, the glossiness decreases rapidly. After heating for 5 min, the surface glossiness tends to be stable and basically remains unchanged.

[0052] Table 1 60° gloss of anti-fingerprint functional layer under different second thermal curing time conditions

[0053] Figure 5is the SEM image of the anti-fingerprint functional layer when the second thermal curing time is 0 min, Figure 6 is the AFM image of the anti-fingerprint functional layer when the second thermal curing time is 0 min; Figure 7 This is the SEM image of the anti-fingerprint functional layer when the second thermal curing time is 3 minutes. Figure 8 This is the AFM image of the anti-fingerprint functional layer when the second thermal curing time is 3 minutes; Fig. 9 This is the SEM image of the anti-fingerprint functional layer when the second thermal curing time is 5 minutes. Fig.10 The AFM image of the anti-fingerprint functional layer when the second thermal curing time is 5 minutes. The results show that as the second thermal curing time is extended from 0 minutes to 5 minutes, the surface roughness density of the anti-fingerprint functional layer gradually increases, resulting in diffuse reflection of light, which is manifested as extinction on a macro scale.

[0054] Test Example 2 The performance test of the ultra-low gloss skin-feel anti-fingerprint film in each embodiment is carried out, and the specific results are shown in Table 2, wherein the test method or standard is as follows: Thickness is tested using a micrometer; The adhesion of the anti-fingerprint functional layer and the adhesive layer are tested according to the method in ISO 2409-2007; 60° gloss is tested according to the method in GB 1743-1979; Visible light transmittance is tested according to the method in GB / T 2680-2021; The water contact angle and oil contact angle (glycerol trioleate) are tested according to the method in ASTM D724-12; Scratch resistance (318, 0.75mm) tested with a 318 hardness pen; The surface scratch resistance is tested according to the method in GB / T17657-2022; The surface roughness was observed using AFM; The feel is specifically tested by touching with hands; Fingerprint resistance: Wash your hands with clean water and dry them with a towel. Keep them in a natural state without touching anything for 10 minutes. Then press the surface of the sample with force. Then remove your hands and observe the fingerprint residue to evaluate the fingerprint resistance. No fingerprint is defined as good, blurred fingerprint is defined as fair, and obvious fingerprint is defined as poor. Water boiling resistance: The adhesive layer of each sample is placed in contact with the melamine board and stacked, and laminated for 30 minutes at a temperature of 130°C and a pressure of 8MPa to obtain a composite sample; the composite sample is boiled in water (100°C, 2h) to test its water boiling resistance. After the boiling is completed, observe whether the composite sample has any abnormality.

[0055] Table 2 Performance parameters of ultra-low gloss skin-feel anti-fingerprint films in various embodiments

[0056] It can be seen from Table 2 that the ultra-low gloss skin-feel anti-fingerprint film of the present invention has excellent comprehensive performance, as follows: ① Ultra-low gloss: The ultra-low gloss of the ultra-low gloss skin-feel anti-fingerprint film of the present invention comes from the incompatibility of the UV resin and the thermosetting resin in the anti-fingerprint functional layer and the microstructure of the UV matte resin (i.e., 6-functional matte fluorocarbon acrylate resin) itself. As shown in the results of Test Example 1, as the second thermal curing time is prolonged, the solvent evaporates, and the thermosetting resin forms microphase separation due to incompatibility, thereby forming a rough structure. After the UV matte resin is formed into a film, the number of rough structures on the coating surface is increased, and the gloss is reduced. The obtained anti-fingerprint functional layer (Example 1) is a matte coating with a 60° gloss of 6.5°; the self-matting PU resin in the adhesive layer forms a rough structure after the first thermal curing, thereby forming a matte coating with a 60° gloss of about 10°; the front side (anti-fingerprint functional layer) of the ultra-low gloss skin-feel anti-fingerprint film is superimposed on the back side (adhesive layer) to form an ultra-low gloss film below 4°.

[0057] ② Surface hydrophobicity, anti-fouling and anti-fingerprint: The anti-fingerprint functional layer in the ultra-low gloss skin-feel anti-fingerprint film of the present invention adopts 6-functional matte fluorocarbon acrylate resin, which has a low surface energy, and the anti-fingerprint functional layer and the adhesive layer both have a rough structure, which is conducive to making the ultra-low gloss skin-feel anti-fingerprint film have excellent surface hydrophobicity, anti-fouling and anti-fingerprint functions.

[0058] ③ High anti-scratch performance: The anti-fingerprint functional layer in the ultra-low gloss skin-feel anti-fingerprint film of the present invention adopts 6-functional matte fluorocarbon acrylate resin, which is compounded with a thermosetting resin. After curing, the cross-linking density is high, and the anti-fingerprint functional layer formed has ultra-high hardness, which is conducive to making the ultra-low gloss skin-feel anti-fingerprint film have high anti-scratch performance.

[0059] ④ High light transmittance: The anti-fingerprint functional layer, the base film layer and the adhesive layer in the ultra-low gloss skin-feel anti-fingerprint film of the present invention have high light transmittance, so the ultra-low gloss skin-feel anti-fingerprint film has high light transmittance.

[0060] ④ Water boiling resistance: The glue layer in the ultra-low gloss skin-feel anti-fingerprint film of the present invention forms a chemical bond with the melamine sheet, which can resist the erosion of water molecules for a long time, so it has excellent water boiling resistance.

[0061] The performance of the anti-fingerprint films in each comparative example was tested according to the above method, and the specific results are shown in Table 3.

[0062] Table 3 Performance parameters of anti-fingerprint films in various comparative examples

[0063] It can be seen from Table 3 that, compared with Example 1, in Comparative Example 1, after the anti-fingerprint functional layer raw material is coated, UV curing is directly performed without the second thermal curing, the anti-fingerprint functional layer is rapidly cured and cross-linked, and the molecular chains have no time to move to form a rough structure of microphase separation, resulting in a relatively large glossiness of the anti-fingerprint functional layer, which does not meet the standard of ultra-low matte. At the same time, due to the low density of the surface micro-nano rough structure, the water contact angle and the oil contact angle are relatively low.

[0064] Compared with Example 1, in Comparative Example 2, the time for the second thermal curing after coating the anti-fingerprint functional layer raw material is 1 min, the resin system undergoes partial microphase separation to form a small amount of rough structure, the glossiness of the anti-fingerprint functional layer reaches 10°, the surface water contact angle and oil contact angle decrease, and the fingerprint resistance performance deteriorates.

[0065] Compared with Example 1, in Comparative Example 3, the adhesive layer replaces the water-based self-matting polyurethane resin with ordinary water-based polyurethane resin. The ordinary water-based polyurethane resin has no matting function. The overall glossiness of the anti-fingerprint film is determined by the anti-fingerprint functional layer and the adhesive layer, so the overall glossiness of the anti-fingerprint film is still relatively high.

[0066] Compared with Example 1, in Comparative Example 4, the anti-fingerprint functional layer replaces the 6-functional matte fluorocarbon acrylate resin with an ordinary 6-functional polyurethane acrylate resin. The fluorine-modified acrylic resin can provide low surface energy fluorine-containing groups and partial rough structures. After replacing it with an ordinary 6-functional polyurethane acrylate resin, the surface contact angle to water and oil is reduced, the gloss of the film does not reach the ultra-low matte level, and the fingerprint resistance performance is reduced.

[0067] Compared with Example 1, in Comparative Example 5, the anti-fingerprint functional layer replaces the single-component thermal curing silicone resin with ordinary acrylic resin, the microphase separation effect disappears, the surface roughness structure becomes less, the glossiness increases, and the anti-fingerprint function decreases.

[0068] Compared with Example 1, in Comparative Example 6, the adhesive layer replaces the water-based self-matting polyurethane resin with an ordinary water-based polyurethane resin, the anti-fingerprint functional layer replaces the 6-functional matte fluorocarbon acrylate resin with an ordinary 6-functional polyurethane acrylate resin, and the single-component thermal curing silicone resin is replaced with an ordinary acrylic resin. The adhesive layer has no self-matting effect, the anti-fingerprint functional layer cannot form a rough structure, and no low surface energy fluorine-containing groups migrate to the surface. The gloss of the film is increased, the water-oil contact angle is reduced, the surface scratch resistance is poor, the scratch resistance is reduced, and the anti-fingerprint function is lost.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An anti-fingerprint functional coating, comprising the following raw materials in percentage by weight: 60-70wt% of UV resin, wherein the UV resin is trifunctional polyurethane acrylate and hexafunctional matte fluorocarbon acrylate resin; UV monomer 5~10wt%; 6-10wt% of thermosetting resin; the thermosetting resin is a single-component thermosetting silicone resin; Matting powder 0~1.5wt%; Photoinitiator 0.8~2wt%; Organic solvent 10~17wt%.

2. The anti-fingerprint functional coating according to claim 1, characterized in that: The mass ratio of the trifunctional polyurethane acrylate to the hexafunctional matte fluorocarbon acrylate resin is 25-30:35-40; The UV monomer includes 1,6-hexanediol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate or trimethylolpropane triacrylate; The matting powder includes silicon dioxide; The photoinitiator includes 2,4,6-trimethylbenzoyl-dimethylphosphine oxide and 1-hydroxycyclohexyl phenyl ketone, and the mass ratio of the 2,4,6-trimethylbenzoyl-dimethylphosphine oxide to the 1-hydroxycyclohexyl phenyl ketone is 0.4-1:0.4-1; The organic solvent includes at least one of ethyl acetate, butyl acetate, dibasic acid ester, propylene glycol methyl ether acetate, propylene glycol methyl ether and butanone.

3. An ultra-low gloss skin-feel anti-fingerprint film, comprising an anti-fingerprint functional layer, a base film layer and an adhesive layer stacked in sequence, wherein the anti-fingerprint functional layer is formed by the anti-fingerprint functional coating according to claim 1 or 2; the raw materials for preparing the adhesive layer include self-matting PU resin and a curing agent.

4. The ultra-low gloss skin-feel anti-fingerprint film according to claim 3, characterized in that: The thickness of the anti-fingerprint functional layer is 10-15 μm, the thickness of the base film layer is 20-100 μm, and the thickness of the adhesive layer is 10-30 μm.

5. The ultra-low gloss skin-feel anti-fingerprint film according to claim 3 or 4, characterized in that: The material of the base film layer includes PET, PE, PP, PVDF, ETFE or PVC.

6. The ultra-low gloss skin-feel anti-fingerprint film according to claim 3 or 4, characterized in that: The mass of the curing agent is 1-3wt% of the mass of the self-matting PU resin.

7. The ultra-low gloss skin-feel anti-fingerprint film according to claim 6, characterized in that: The self-matting PU resin includes a self-matting polyurethane resin or a self-matting acrylic resin, and the curing agent is isocyanate.

8. The method for preparing the ultra-low gloss skin-feel anti-fingerprint film according to any one of claims 3 to 7, comprising the following steps: The base film is subjected to double-sided corona treatment to obtain a corona base film; Coating a raw material for preparing a glue layer on one surface of the corona base film, forming a glue layer after a first thermal curing, and obtaining a glue layer-base film layer composite material; The other surface of the corona base film in the adhesive layer-base film layer composite material is coated with an anti-fingerprint functional coating, and the anti-fingerprint functional layer is formed by second thermal curing and UV curing in sequence to obtain the ultra-low gloss skin-feel anti-fingerprint film; wherein the second thermal curing time is ≥3 minutes.

9. The preparation method according to claim 8, characterized in that: The temperature of the first thermal curing is 100-120°C, and the time is 2-4 minutes; the temperature of the second thermal curing is 120-150°C, and the time is 3-10 minutes; the distance between the UV lamp used for the UV curing and the composite material obtained after the second thermal curing is 20-30 mm, and the light intensity of the UV lamp is 150-200 mJ / cm 2 .

10. Use of the anti-fingerprint functional coating according to claim 1 or 2, the ultra-low gloss skin-feel anti-fingerprint film according to any one of claims 3 to 7, or the ultra-low gloss skin-feel anti-fingerprint film prepared by the preparation method according to claim 8 or 9 in decorative materials.

Images