Metal wiredrawing texture decorative film and preparation method thereof

Abstract

The invention provides a metal wiredrawing texture decorative film and a preparation method thereof, and relates to the technical field of decorative film preparation. Comprising the following steps: S1, uniformly mixing acrylate and polyethylene glycol terephthalate, then adding a cross-linking agent, a dispersing agent and a lubricating agent, uniformly mixing, then adding a photoinitiator to obtain a mixed base material, adding metal powder into the mixed base material, uniformly mixing to obtain a mixed material, and carrying out extrusion molding on the mixed material to obtain a composite material; melting, extruding and coating the mixed material on a base film to obtain a texture layer wet film, rolling metal textures on the texture layer wet film, and then performing ultraviolet curing to obtain a texture layer; s2, acrylic ester and urethane acrylate are mixed, a cross-linking agent and an adhesion promoter are added, a photoinitiator is added, scratch-resistant layer slurry is obtained, the texture layer is coated with the scratch-resistant layer slurry, and the metal wiredrawing texture decorative film is obtained through ultraviolet curing. The prepared metal wiredrawing texture decorative film has real metal texture, and metal dust is not generated in the preparation process.

Description

Technical Field

[0001] This invention relates to the field of decorative film preparation technology, specifically to a metal brushed texture decorative film and its preparation method. Background Technology

[0002] Metal brushed texture decorative film is a composite functional film material that forms a realistic brushed metal texture and appearance on the surface of a plastic film. Current methods for preparing metal brushed texture decorative film involve depositing aluminum onto a transparent plastic film, then performing a brushing process on the aluminum layer. After brushing, the aluminum film surface is cleaned, and then a protective paint is sprayed for curing and protection.

[0003] Brushing processes on aluminum layers generally include polishing cloth wheel brushing and brush roller brushing. Polishing cloth wheel brushing uses nylon or cloth wheels of varying roughness to grind the aluminum-coated film surface under specific pressure and speed, forming continuous filamentous textures. The coarseness and depth of the brushed texture can be controlled by adjusting the wheel material, rotation speed, pressure, and movement speed. Brush roller brushing uses brush rollers with abrasives such as diamond or silicon carbide for grinding and brushing. Therefore, both polishing cloth wheel brushing and brush roller brushing generate metal dust during the grinding and brushing process, polluting the environment. Thus, providing a metal brushed texture decorative film that does not generate metal dust during its preparation process has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a metal brushed texture decorative film and its preparation method, which solves the technical problem that existing preparation methods for metal brushed texture decorative films generate metal dust during the grinding and brushing process.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A method for preparing a metallic brushed texture decorative film includes the following steps:

[0009] S1. After mixing acrylate and polyethylene terephthalate evenly, add crosslinking agent, dispersant and lubricant and mix evenly. Then add photoinitiator to obtain a mixed substrate. Add metal powder to the mixed substrate and mix evenly to obtain a mixture. Melt and extrude the mixture onto a base film to obtain a textured wet film. Roll out a metal texture on the textured wet film and then cure it with ultraviolet light to obtain a textured layer.

[0010] S2. Mix acrylate and polyurethane acrylate, add crosslinking agent and adhesion promoter, add photoinitiator to obtain anti-scratch layer slurry, coat the anti-scratch layer slurry onto the texture layer, and cure with ultraviolet light to obtain a metal brushed texture decorative film.

[0011] Preferably, the mass ratio of acrylate to polyethylene terephthalate is 2:3-5.

[0012] Preferably, the acrylate includes at least one of isooctyl acrylate and isobornyl acrylate.

[0013] Preferably, the crosslinking agent is selected from any one of isocyanate crosslinking agents, aziridine crosslinking agents, and epoxy crosslinking agents;

[0014] The lubricant is selected from any one of pentaerythritol stearate, glyceryl monostearate, ethylene glycol stearate, and ethylene bis-stearamide;

[0015] The photoinitiator is selected from any one of α-hydroxy ketones, benzoyl carbamates, and α-amino ketones.

[0016] Preferably, the metal powder accounts for 8-12% of the mass of the mixed substrate.

[0017] Preferably, the metal powder is selected from any one of aluminum powder, copper powder, and nickel powder.

[0018] Preferably, in S2, the mass ratio of acrylate to polyurethane acrylate is 2:1-3.

[0019] Preferably, in S2, the adhesion promoter is selected from any one of silane coupling agents, titanate coupling agents, zirconate coupling agents, and aluminate coupling agents.

[0020] Secondly, the present invention provides a metal brushed texture decorative film prepared by the aforementioned preparation method, the decorative film comprising...

[0021] grassroots level;

[0022] A texture layer, wherein the texture layer is disposed on the upper surface and / or lower surface of the base layer;

[0023] A scratch-resistant layer is disposed on the surface of the textured layer away from the base layer.

[0024] (III) Beneficial Effects

[0025] This invention provides a metal brushed texture decorative film and its preparation method. Compared with the prior art, it has the following advantages:

[0026] The method for preparing the metal brushed texture decorative film of the present invention involves obtaining a mixed substrate by acrylate and polyethylene terephthalate, adding metal powder to the mixed substrate and coating it onto a base film by melt extrusion, then rolling out the metal texture, and finally curing it with ultraviolet light. The prepared metal brushed texture decorative film has a realistic metallic texture and does not generate metal dust during the preparation process.

[0027] The metal brushed texture decorative film of the present invention has excellent weather resistance and scratch resistance, is flexible and thermoformable, has good processing performance, is environmentally friendly and pollution-free, and does not contain heavy metals. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To better understand the above technical solution, the following will provide a detailed explanation of the technical solution in conjunction with specific implementation methods.

[0030] I. Preparation Method

[0031] Example 1

[0032] This embodiment provides a method for preparing a metal brushed texture decorative film, including the following steps:

[0033] S1. Prepare texture layer

[0034] Isooctyl acrylate, isobornyl acrylate, and polyethylene terephthalate (PET) are mixed in a mass ratio of 70:30:150. Then, 5 parts by mass of crosslinking agent Bayer N3300, 3 parts by mass of dispersant BYK Chemical DISPERBYK-163, and 0.3 parts by mass of lubricant are added and mixed evenly. Then, 2.5 parts by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone are added and mixed evenly to obtain a mixed substrate. 8% by mass of metallic aluminum powder is added to the mixed substrate and mixed evenly to obtain a mixture. The mixture is placed in a twin-screw extruder (model: SJSH-60) for extrusion to obtain a textured layer slurry. The barrel temperatures were set sequentially as follows: 100℃, 250℃, 250℃, 250℃, 250℃, 260℃, 260℃, 280℃, 280℃, 280℃, 280℃, 280℃, and 280℃. The screw speed was 400 r / min, and the vacuum degree (negative pressure) was 0.08 MPa. The texture layer slurry was coated onto a 0.2 mm thick PET base film. A wet texture film with a thickness of 20 μm was obtained through calendering. A precision texture embossing roller was used to roll a metallic texture with a depth of 15 μm onto the wet texture film at a linear speed of 5 m / min and an embossing pressure of 5 MPa. The wet texture film was then transported to a UV lamp box with a UV lamp power of 300 W / cm for 3 seconds, during which the wet texture film was cured.

[0035] S2. Prepare the anti-scratch layer

[0036] Isooctyl acrylate, isoborneol acrylate, and polyurethane acrylate (EBECRYL 230 difunctional aliphatic polyether polyurethane acrylate) were mixed in a mass ratio of 66:34:150. 5 parts by mass of crosslinking agent Bayer N3300 and 0.5 parts by mass of adhesion promoter KH550 were added and mixed thoroughly. Then, 2.5 parts by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone were added to obtain the anti-scratch layer slurry. The anti-scratch layer slurry was coated onto the cured textured layer using an anilox roller, with a wet film thickness of 3 μm. The mixture was then placed in a UV lamp box with a UV lamp power of 300 W / cm. Under UV light, the wet film cured to obtain a standard brushed metal texture decorative film.

[0037] Example 2

[0038] This embodiment provides a method for preparing a metal brushed texture decorative film, including the following steps:

[0039] S1. Prepare texture layer

[0040] Isooctyl acrylate, isobornyl acrylate, and polyethylene terephthalate were mixed in a mass ratio of 70:30:180. Then, 6 parts by mass of crosslinking agent Bayer N3300, 4 parts by mass of dispersant BYK Chemical DISPERBYK-163, and 0.3 parts by mass of lubricant were added and mixed evenly. Then, 2.5 parts by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone were added and mixed evenly to obtain a mixed substrate. 12% by mass of aluminum powder was added to the mixed substrate and mixed evenly to obtain a mixture. The mixture was placed in a twin-screw extruder (model: SJSH-60) for extrusion to obtain a textured layer slurry. The barrel temperatures were set sequentially as follows: 100℃, 250℃, 250℃, 250℃, 250℃, 260℃, 260℃, 280℃, 280℃, 280℃, 280℃, and 280℃. The screw speed was 400 r / min, and the vacuum degree (negative pressure) was 0.08 MPa. The texture layer slurry was coated onto a 0.15 mm thick PET base film. A wet texture film with a thickness of 25 μm was obtained by calendering. A precision texture embossing roller was used to roll a metallic texture with a depth of 8 μm onto the wet texture film at a linear speed of 10 m / min and an embossing pressure of 6 MPa. The wet texture film was then transported to a UV lamp box with a UV lamp power of 300 W / cm for 4 seconds to cure.

[0041] S2. Prepare the anti-scratch layer

[0042] Isooctyl acrylate, isoborneol acrylate, and polyurethane acrylate (EBECRYL 230 difunctional aliphatic polyether polyurethane acrylate) were mixed in a mass ratio of 66:34:100. Four parts by mass of crosslinking agent Bayer N3300 and 0.5 parts by mass of adhesion promoter KH550 were added and mixed thoroughly. Then, 2.5 parts by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone were added to obtain the anti-scratch layer slurry. The anti-scratch layer slurry was coated onto the cured textured layer using an anilox roller, with a wet film thickness of 4 μm. The mixture was then placed in a UV lamp box with a UV lamp power of 300 W / cm. Under UV light, the wet film cured to obtain a finely brushed metallic textured decorative film.

[0043] Example 3

[0044] This embodiment provides a method for preparing a metal brushed texture decorative film, including the following steps:

[0045] S1. Prepare texture layer

[0046] Isooctyl acrylate, isobornyl acrylate, and polyethylene terephthalate were mixed in a mass ratio of 70:30:190. Then, 6 parts by mass of crosslinking agent Bayer N3300, 4 parts by mass of dispersant BYK Chemical DISPERBYK-163, and 0.3 parts by mass of lubricant were added and mixed evenly. Then, 2.5 parts by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone were added and mixed evenly to obtain a mixed substrate. 5% by mass of aluminum powder was added to the mixed substrate and mixed evenly to obtain a mixture. The mixture was placed in a twin-screw extruder (model: SJSH-60) for extrusion to obtain a textured layer slurry. The barrel temperatures were set sequentially as follows: 100℃, 250℃, 250℃, 250℃, 250℃, 260℃, 260℃, 280℃, 280℃, 280℃, 280℃, 280℃, and 280℃. The screw speed was 400 r / min, and the vacuum degree (negative pressure) was 0.08 MPa. The texture layer slurry was coated onto a 0.25 mm thick PET base film. A 30 μm thick wet texture film was obtained by calendering. A precision texture embossing roller was used to roll a 25 μm deep metallic texture onto the wet texture film at a linear speed of 15 m / min and an embossing pressure of 8 MPa. The wet texture film was then transported to a UV lamp box with a UV lamp power of 300 W / cm for 5 seconds, at which point the wet texture film was cured.

[0047] S2. Prepare the anti-scratch layer

[0048] Isooctyl acrylate, isoborneol acrylate, and polyurethane acrylate (EBECRYL 230 difunctional aliphatic polyether polyurethane acrylate) were mixed in a mass ratio of 66:34:90. Four parts by mass of crosslinking agent Bayer N3300 and 0.5 parts by mass of adhesion promoter KH550 were added and mixed thoroughly. Then, 2.5 parts by mass of photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone were added to obtain the anti-scratch layer slurry. The anti-scratch layer slurry was coated onto the cured textured layer using an anilox roller, with a wet film thickness of 5 μm. The mixture was then placed in a UV lamp box with a UV lamp power of 300 W / cm. Under UV light, the wet film cured to obtain a rough, brushed metallic textured decorative film.

[0049] II. Testing Methods

[0050] The surface hardness and metallic texture of the metallic brushed texture decorative films prepared in Examples 1-3 were tested. The specific test methods are as follows:

[0051] 1. Surface hardness: Refer to ASTM D3363 international standard;

[0052] 2. Metallic texture: Visual assessment, rated on a scale of 1-5, with 1 being the weakest metallic texture and 5 being the highest.

[0053] III. Test Results

[0054] The performance test results of the metal brushed texture decorative films prepared in Examples 1-3 are shown in Table 1.

[0055] Table 1. Performance test results of the brushed metal texture decorative films prepared in Examples 1-3

[0056]

[0057] As shown in Table 1, the metal brushed texture decorative films prepared in Examples 1-3 have excellent metallic texture and can precisely control the brushed texture. They can be widely used in surface decoration of home appliances, electronic products, automotive interiors, architectural decoration and other fields.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0060] The present invention has been illustrated with the above embodiments to describe the detailed process flow of the present invention. However, the present invention is not limited to the above detailed process flow, that is, it does not mean that the present invention must rely on the above detailed process flow to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A method for preparing a metallic brushed texture decorative film, characterized in that, Includes the following steps: S1. After mixing acrylate and polyethylene terephthalate evenly, add crosslinking agent, dispersant and lubricant and mix evenly. Then add photoinitiator to obtain a mixed substrate. Add metal powder to the mixed substrate and mix evenly to obtain a mixture. Melt and extrude the mixture onto a base film to obtain a textured wet film. Roll out the textured wet film to form a texture, and then cure it with ultraviolet light to obtain a textured layer. S2. Mix acrylate and polyurethane acrylate, add crosslinking agent and adhesion promoter, add photoinitiator to obtain anti-scratch layer slurry, coat the anti-scratch layer slurry onto the texture layer, and cure with ultraviolet light to obtain a metal brushed texture decorative film.

2. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The mass ratio of acrylate to polyethylene terephthalate is 2:3-5.

3. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The acrylate includes at least one of isooctyl acrylate and isobornyl acrylate.

4. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The crosslinking agent is selected from any one of isocyanate crosslinking agents, aziridine crosslinking agents, and epoxy crosslinking agents; The lubricant is selected from any one of pentaerythritol stearate, glyceryl monostearate, ethylene glycol stearate, and ethylene bis-stearamide; The photoinitiator is selected from any one of α-hydroxy ketones, benzoyl carbamates, and α-amino ketones.

5. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The metal powder accounts for 8-12% of the mass of the mixed substrate.

6. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The metal powder is selected from any one of aluminum powder, copper powder, and nickel powder.

7. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The mass ratio of the acrylate to the polyurethane acrylate is 2:1-3.

8. The method for preparing the metallic brushed texture decorative film as described in claim 1, characterized in that, The adhesion promoter is selected from any one of silane coupling agents, titanate coupling agents, zirconate coupling agents, and aluminate coupling agents.

9. A metallic brushed texture decorative film prepared by the preparation method according to any one of claims 1-8, characterized in that, The decorative film includes grassroots level; A texture layer, wherein the texture layer is disposed on the upper surface and / or lower surface of the base layer; A scratch-resistant layer is disposed on the surface of the textured layer away from the base layer.

Images