A kind of carbon crystal decorative film with high metallic feel and preparation method thereof

Abstract

The present invention relates to the technical field of decorative films, specifically to a highly metallic carbon crystal decorative film and a preparation method thereof, comprising: a carbon crystal base film is sequentially passed through two groups of shot peening tubes arranged longitudinally and transversely and subjected to shot peening treatment, to form a first trough body and a second trough body that are crisscrossed; then the carbon crystal base film passes through a high-pressure air duct, and its outer end is sprayed to remove residual shot; a metallic texture coating is rolled on the outer end of the carbon crystal base film, and a protective layer is formed after drying and curing; an adhesive is rolled on the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer, so as to obtain a highly metallic carbon crystal decorative film. The present invention uses modified bamboo charcoal powder and PVC resin as main materials to mix and prepare a carbon crystal base film, and after a trough body is arranged on its surface and a protective film layer is coated, the carbon crystal base film and the protective layer are closely combined to form a composite structure, which greatly improves the strength, antibacterial properties and heat resistance of the film compared to the traditional single-layer PVC decorative film.

Description

Technical Field

[0001] The invention relates to the technical field of decorative films, in particular to a highly metallic carbon crystal decorative film and a preparation method thereof. Background Art

[0002] Decorative film is a new type of decorative material made of high molecular polymer as raw material, adding corresponding additives, and calendering and compounding. The PVC decorative film can be compounded with various substrates such as wood, plastic plate, metal plate, etc., to achieve high-end and realistic decorative effects with various colors and textures, and can also form a protective layer on the surface of the substrate. As a new favorite in the field of decoration, PVC decorative film is becoming more and more popular among consumers. However, due to the problems that PVC material itself is easy to age and become brittle, easy to be scratched or torn by mechanical damage, not resistant to high temperature and softening and deformation, poor antibacterial property and easy to produce mildew, the service life of PVC as a decorative film is reduced, which limits the application of PVC decorative film. To this end, a highly metallic carbon crystal decorative film and a preparation method thereof are proposed. Summary of the invention

[0003] In order to address the deficiencies of the prior art, the present invention provides a highly metallic carbon crystal decorative film and a preparation method thereof, which forms a composite structure by tightly combining the carbon crystal base film and the protective layer, thereby greatly improving the strength, antibacterial properties and heat resistance of the film.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a highly metallic carbon crystal decorative film, comprising a carbon crystal base film, a groove body is arranged on the carbon crystal base film, a protective layer is arranged at the outer end of the carbon crystal base film, and an adhesive layer is arranged at the inner end of the carbon crystal base film, and a release film is bonded to the surface of the adhesive layer.

[0005] Preferably, the trough body is composed of a first trough body and a second trough body that are crisscrossed.

[0006] Preferably, the carbon crystal-based membrane is prepared as follows: S1, immersing bamboo charcoal powder in a copper salt solution, ultrasonically dispersing it at 100-150°C for 30-50 minutes, then stopping the ultrasonic treatment, continuing the reaction for 1-3 hours, filtering and drying to obtain modified bamboo charcoal powder; S2, mixing PVC resin, modified bamboo charcoal powder, nano-calcium carbonate and plasticizer evenly, putting them into a plastic refiner for plasticization, and then sending them to a calender for calendering treatment, and obtaining a carbon crystal-based membrane after traction and cooling.

[0007] Preferably, in step S1, the material-liquid ratio of bamboo charcoal powder to copper salt solution is 1:(1-2) g / ml; wherein the mass concentration of the copper salt solution is 10-20%.

[0008] Preferably, in step S1, the copper salt solution includes but is not limited to copper chloride solution and copper sulfate solution.

[0009] Preferably, in step S2, the carbon crystal-based film comprises the following raw materials in parts by weight: 60-80 parts of PVC resin, 20-30 parts of modified bamboo charcoal powder, 5-10 parts of nano calcium carbonate and 10-15 parts of plasticizer.

[0010] Preferably, in step S2, the plasticizer includes but is not limited to dioctyl phthalate, dibutyl phthalate and dioctyl adipate.

[0011] Preferably, the preparation of the metallic texture coating used for the protective layer is as follows: by weight, pour 50-60 parts of acrylic emulsion, 3-5 parts of amino resin, 10-15 parts of pearl powder, 2-4 parts of propylene glycol butyl ether and 5-10 parts of deionized water into a disperser and evenly disperse them.

[0012] The present invention also provides a method for preparing a highly metallic carbon crystal decorative film, which is as follows:

[0013] (1) The carbon crystal-based film is sequentially passed through two groups of shot peening pipes arranged longitudinally and transversely and is shot peened to form a first trough body and a second trough body that are crisscrossed; then the carbon crystal-based film passes through a high-pressure air duct, and its outer end is blown and sprayed to remove residual shot;

[0014] (2) rolling a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0015] (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0016] The present invention provides a highly metallic carbon crystal decorative film and a preparation method thereof, which has the following beneficial effects compared with the prior art:

[0017] The present invention uses modified bamboo charcoal powder and PVC resin as main materials for mixing and preparing a carbon crystal base film, arranges a groove body on the surface of the carbon crystal base film and then coats a protective film layer, so that the carbon crystal base film and the protective layer are closely combined to form a composite structure. Compared with the traditional single-layer PVC decorative film, the strength, antibacterial performance and heat resistance of the film are greatly improved.

[0018] The present invention provides two groups of shot peening tubes arranged vertically and horizontally, and staggered grooves are opened on the carbon crystal base film through shot peening. The residual shot is blown away by high-pressure wind, which is conducive to the full combination of the protective layer and the carbon crystal base film, increases the composite strength, and thus improves the overall quality of the decorative film.

[0019] The invention soaks bamboo charcoal powder in a copper salt solution to prepare modified bamboo charcoal powder, and the slow release of copper ions provides excellent antibacterial performance for the decorative film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the carbon crystal decorative film with high metallic feel of the present invention;

[0022] Figure 2 It is a schematic diagram of the first tank body and the second tank body of the present invention. DETAILED DESCRIPTION

[0023] The following examples are used to explain the implementation methods of the present application in detail, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Example 1

[0025] The preparation method of the highly metallic carbon crystal decorative film is as follows:

[0026] (1) The carbon crystal base film is sequentially passed through two groups of shot peening tubes arranged longitudinally and transversely and is shot peened to form a first trough body and a second trough body that are crisscrossed, and the first trough body and the second trough body form an integral trough body; then the carbon crystal base film passes through a high-pressure air duct, and its outer end is sprayed to remove the shot remaining on the surface of the base film and in the trough body;

[0027] (2) rolling a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0028] (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0029] Among them, the carbon crystal-based membrane is prepared as follows: S1. Bamboo charcoal powder is immersed in a 10wt% cupric chloride solution at a material-liquid ratio of 1:1g / ml, and ultrasonically dispersed at 100°C for 50min, then the ultrasonic treatment is stopped, the reaction is continued for 1h, and modified bamboo charcoal powder is obtained by filtration and drying; S2. In parts by weight, 60 parts of PVC resin, 20 parts of modified bamboo charcoal powder, 10 parts of nano-calcium carbonate and 10 parts of dioctyl phthalate are mixed evenly and put into a plasticizer for plasticization, and then sent to a calender for calendering treatment. After traction and cooling, a carbon crystal-based membrane is obtained.

[0030] The preparation of the metallic texture coating used for the protective layer is as follows: by weight, 60 parts of acrylic emulsion, 3 parts of amino resin, 15 parts of pearl powder, 2 parts of propylene glycol butyl ether and 10 parts of deionized water are poured into a disperser and uniformly dispersed to obtain the metallic texture coating.

[0031] Example 2

[0032] The preparation method of the highly metallic carbon crystal decorative film is as follows:

[0033] (1) The carbon crystal base film is sequentially passed through two groups of shot peening tubes arranged longitudinally and transversely and is shot peened to form a first trough body and a second trough body that are crisscrossed, and the first trough body and the second trough body form an integral trough body; then the carbon crystal base film passes through a high-pressure air duct, and its outer end is sprayed to remove the shot remaining on the surface of the base film and in the trough body;

[0034] (2) rolling a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0035] (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0036] Among them, the carbon crystal-based membrane is prepared as follows: S1. Bamboo charcoal powder is immersed in a 20wt% copper sulfate solution at a material-liquid ratio of 1:2g / ml, and ultrasonically dispersed at 150°C for 30min, then the ultrasonic treatment is stopped, the reaction is continued for 3h, and modified bamboo charcoal powder is obtained by filtration and drying; S2. In parts by weight, 60 parts of PVC resin, 30 parts of modified bamboo charcoal powder, 5 parts of nano-calcium carbonate and 15 parts of dibutyl phthalate are mixed evenly and put into a plasticizer for plasticization, and then sent to a calender for calendering treatment. After traction and cooling, a carbon crystal-based membrane is obtained.

[0037] The preparation of the metallic texture coating used for the protective layer is as follows: by weight, 50 parts of acrylic emulsion, 5 parts of amino resin, 10 parts of pearl powder, 4 parts of propylene glycol butyl ether and 5 parts of deionized water are poured into a disperser and uniformly dispersed to obtain the metallic texture coating.

[0038] Example 3

[0039] The preparation method of the highly metallic carbon crystal decorative film is as follows:

[0040] (1) The carbon crystal base film is sequentially passed through two groups of shot peening tubes arranged longitudinally and transversely and is shot peened to form a first trough body and a second trough body that are crisscrossed, and the first trough body and the second trough body form an integral trough body; then the carbon crystal base film passes through a high-pressure air duct, and its outer end is sprayed to remove the shot remaining on the surface of the base film and in the trough body;

[0041] (2) rolling a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0042] (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0043] Among them, the carbon crystal-based membrane is prepared as follows: S1. Bamboo charcoal powder is immersed in a 15wt% copper chloride solution at a material-liquid ratio of 1:2g / ml, and ultrasonically dispersed at 120°C for 30-50min, then the ultrasonic treatment is stopped, the reaction is continued for 2h, and modified bamboo charcoal powder is obtained by filtering and drying; S2. In parts by weight, 70 parts of PVC resin, 25 parts of modified bamboo charcoal powder, 8 parts of nano calcium carbonate and 12 parts of dioctyl adipate are mixed evenly and put into a plasticizer for plasticization, and then sent to a calender for calendering treatment, and the carbon crystal-based membrane is obtained after traction and cooling.

[0044] The preparation of the metallic texture coating used for the protective layer is as follows: by weight, 55 parts of acrylic emulsion, 4 parts of amino resin, 13 parts of pearl powder, 3 parts of propylene glycol butyl ether and 7 parts of deionized water are poured into a disperser and uniformly dispersed to obtain the metallic texture coating.

[0045] Comparative Example 1

[0046] The preparation method of the highly metallic carbon crystal decorative film is as follows:

[0047] (1) Roll-coating a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0048] (2) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0049] The preparation method of the carbon crystal-based film and the preparation method of the metallic texture coating used for the protective layer are the same as those in Example 3.

[0050] Comparative Example 2

[0051] The preparation method of the highly metallic carbon crystal decorative film is as follows:

[0052] (1) The carbon crystal-based film is sequentially passed through two groups of shot peening tubes arranged longitudinally and transversely and is shot peened to form a first trough body and a second trough body that are crisscrossed, and the first trough body and the second trough body form an integral trough body;

[0053] (2) rolling a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0054] (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0055] The preparation method of the carbon crystal-based film and the preparation method of the metallic texture coating used for the protective layer are the same as those in Example 3.

[0056] Comparative Example 3

[0057] The preparation method of the highly metallic carbon crystal decorative film is as follows:

[0058] (1) The carbon crystal base film is sequentially passed through two groups of shot peening tubes arranged longitudinally and transversely and is shot peened to form a first trough body and a second trough body that are crisscrossed, and the first trough body and the second trough body form an integral trough body; then the carbon crystal base film passes through a high-pressure air duct, and its outer end is sprayed to remove the shot remaining on the surface of the base film and in the trough body;

[0059] (2) rolling a metallic texture coating on the outer end of the carbon crystal base film, and drying and curing the coating to form a protective layer;

[0060] (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

[0061] Among them, the carbon crystal-based film is prepared as follows: by weight, 70 parts of PVC resin, 25 parts of bamboo charcoal powder, 8 parts of nano calcium carbonate and 12 parts of dioctyl adipate are mixed evenly and put into a plasticizer for plasticization, and then sent to a calender for calendering. After traction and cooling, the carbon crystal-based film is obtained.

[0062] The preparation method of the metallic texture coating used for the protective layer is the same as that of Example 3.

[0063] Quality Inspection

[0064] The test objects are commercially available PVC decorative films (thickness 150 μm), carbon crystal decorative films in Examples 1-3 and Comparative Examples 1-3 (not coated with adhesive and not covered with release film), wherein the carbon crystal base film has a thickness of 130 μm and the protective layer has a thickness of 20 μm.

[0065] 1. Heat resistance test: According to the standard test method for heat deformation temperature of plastics D648 in ASTM standard, the heat deformation temperature of each decorative film under 0.45Mpa was tested. The specific results are shown in the following table.

[0066] Table 1 Heat resistance

[0067] category Heat deformation temperature, °C Example 1 86 Example 2 85 Example 3 88 Comparative Example 1 78 Comparative Example 2 83 Comparative Example 3 85 Commercially available PVC decorative film 55

[0068] 2. Antibacterial property test: Antibacterial property and antibacterial durability are tested in accordance with GB / T 21866-2008 "Antibacterial property determination method and antibacterial effect of antibacterial coatings (paint films)". Antibacterial durability is to test the antibacterial rate of the friction area after the sample has been rubbed a thousand times. The details are shown in the following table.

[0069] Table 2 Antibacterial properties

[0070] category Antibacterial activity, % Antimicrobial durability, % Example 1 99.99 99.99 Example 2 99.99 99.99 Example 3 99.99 99.99 Comparative Example 1 99.99 99.99 Comparative Example 2 99.99 99.99 Comparative Example 3 98.95 94.55 Commercially available PVC decorative film 98.05 91.65

[0071] 3. Strength test: various decorative films were tested according to the standards of GB / T 1040.1-2006 and HG / T 3841-2006. The specific results are shown in the following table.

[0072] Table 3 Strength

[0073] category Tensile strength, MPa <![CDATA[Notched impact strength at 25°C, KJ / m 2 > Example 1 68.5 28.6 Example 2 67.2 28.3 Example 3 68.8 28.7 Comparative Example 1 63.4 27.2 Comparative Example 2 66.2 27.8 Comparative Example 3 68.5 28.8 Commercially available PVC decorative film 55.6 24.5

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly metallic carbon crystal decorative film, characterized in that: It comprises a carbon crystal-based film, a groove body is arranged on the carbon crystal-based film, a protective layer is arranged at the outer end of the carbon crystal-based film, and an adhesive layer is arranged at the inner end of the carbon crystal-based film, and a release film is adhered to the surface of the adhesive layer; The tank body is composed of a first tank body and a second tank body that are crisscrossed; The preparation of the carbon crystal-based film is as follows, S1, immersing bamboo charcoal powder in a copper salt solution, ultrasonically dispersing at 100-150° C. for 30-50 min, then stopping the ultrasonic treatment, continuing the reaction for 1-3 h, filtering and drying to obtain modified bamboo charcoal powder; S2, mixing PVC resin, modified bamboo charcoal powder, nano calcium carbonate and plasticizer evenly, putting them into a plasticizer for plasticization, and then sending them into a calender for calendering, and obtaining a carbon crystal base film after traction and cooling; Preparation method of carbon crystal decorative film with high metallic feel, The following steps are included: (1) The carbon crystal-based membrane passes through two sets of shot peening pipes arranged longitudinally and transversely in sequence and is shot peened to form a first trough body and a second trough body that are crisscrossed; then the carbon crystal-based membrane passes through a high-pressure air duct, and its outer end is blown and sprayed to remove residual shot; (2) Roll-coating a metallic texture coating on the outer end of the carbon crystal base film, and forming a protective layer through drying and curing; (3) An adhesive is rolled onto the inner end of the carbon crystal base film to form an adhesive layer, and a release film is covered on the surface of the adhesive layer to obtain a carbon crystal decorative film with a high metallic feel.

2. The highly metallic carbon crystal decorative film according to claim 1, characterized in that: In step S1, the material-liquid ratio of bamboo charcoal powder to copper salt solution is 1: (1-2) g / ml; wherein the mass concentration of the copper salt solution is 10-20%.

3. The highly metallic carbon crystal decorative film according to claim 1, characterized in that: In step S1, the copper salt solution includes a copper chloride solution and a copper sulfate solution.

4. The highly metallic carbon crystal decorative film according to claim 1, characterized in that: In step S2, the carbon crystal-based film includes the following raw materials in parts by weight: 60-80 parts of PVC resin, 20-30 parts of modified bamboo charcoal powder, 5-10 parts of nano calcium carbonate and 10-15 parts of plasticizer.

5. The highly metallic carbon crystal decorative film according to claim 1, characterized in that: In step S2, the plasticizer includes dioctyl phthalate, dibutyl phthalate and dioctyl adipate.

6. The highly metallic carbon crystal decorative film according to claim 1, characterized in that: The preparation of the metallic texture coating used for the protective layer is as follows: by weight, pour 50-60 parts of acrylic emulsion, 3-5 parts of amino resin, 10-15 parts of pearl powder, 2-4 parts of propylene glycol butyl ether and 5-10 parts of deionized water into a disperser and evenly disperse them.

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