CN111976248A - Stain-resistant scratch-resistant PVC decorative film and preparation method thereof - Google Patents
Stain-resistant scratch-resistant PVC decorative film and preparation method thereof Download PDFInfo
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- CN111976248A CN111976248A CN202010887410.8A CN202010887410A CN111976248A CN 111976248 A CN111976248 A CN 111976248A CN 202010887410 A CN202010887410 A CN 202010887410A CN 111976248 A CN111976248 A CN 111976248A
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the technical field of decorative materials, in particular to a stain-resistant scratch-resistant PVC decorative film and a preparation method thereof. The stain-resistant scratch-resistant PVC decorative film sequentially comprises a PVC bottom film layer, a pattern printing layer, a transparent protective film layer and a stain-resistant scratch-resistant coating, wherein the coating of the stain-resistant scratch-resistant coating comprises at least two curing coatings with different curing conditions. The utility model provides a resistant dirty resistant coating of scraping is through setting up the different solidification coating of two kinds of curing conditions for at least need carry out secondary cure, just can make resistant dirty resistant coating of scraping solidify entirely. When only once solidification is carried out, the stain-resistant scratch-resistant coating can be in a semi-solidified state, and the embossing is carried out again, so that the embossing effect with good concave-convex texture can be realized, and the cracking of the stain-resistant scratch-resistant coating cannot be caused.
Description
Technical Field
The invention relates to the technical field of decorative materials, in particular to a stain-resistant scratch-resistant PVC decorative film and a preparation method thereof.
Background
With the gradual improvement of living standard of people and the rise of real estate industry, surface decoration materials enter a rapid development period, wherein thin film materials such as PVC thin films, PET thin films, composite thin films and the like occupy the leading position of a novel surface decoration material market due to simple production process, various surface decoration patterns and effects, simple use method and high cost performance. Among them, the PVC film is developed most rapidly due to its good wear resistance, good corrosion resistance, excellent quality and low cost, and is widely used in the fields of indoor and furniture decoration, decoration industry, airplane interior compartment film, ship compartment film, mobile phone film, etc. The surface of the decorated object can obtain higher hardness, and the surface is prevented from being artificially scratched, scratched or collided, so that the decorated object is better protected, and the service life of the decorated object is prolonged; secondly, it can also make the ornamental have high temperature resistance characteristic, prevents the surface scald, in addition, PVC not only can show the colour of nature, can also show the colour in people's illusion.
In order to achieve good embossing effect and stain and scratch resistance during application of the PVC decorative film, the following two treatment methods are generally adopted: one processing method is as follows: and carrying out surface coating treatment after embossing. Such as that disclosed in patent document CN103865340A, and the method for treating the PVC decorative film, the treating agent comprises PVC powder, acrylic resin, toluene, cyclohexanone, butanone, isopropanol and additives; the preparation method comprises mixing the above materials, diluting, stirring, cooling, grinding, and filtering; the method for treating the PVC decorative film comprises the steps of compounding, embossing, delustering and coating; and curing and drying after coating to obtain the coating. The method for processing the coating after embossing has the following defects: the embossed ravines are filled with the treating agent, so that the texture and texture effects are poor; meanwhile, the process is complex, multiple processing phenomena exist, and the processing cost is increased.
Still another treatment method is: the coating process is carried out before embossing, which is also the main process in the prior art. For example, the patent document with the publication number of CN106192451A discloses a PVC decorative film and a method for preparing the same, wherein the processing method disclosed in the examples comprises the following steps: and carrying out surface treatment on the PVC fabric with a three-layer structure of a bottom layer, a surface layer and a back coating, wherein the thickness of the PVC fabric is 0.10 mm. Firstly, a 100-mesh anilox roller is adopted to roll coat the bridging agent on the PVC fabric, and the PVC fabric is dried in hot air at 40 ℃ after being rolled by the roller to obtain the bottom coating film. And then, roll coating the water-based PU slurry on the bottom coating film by using a 150-mesh anilox roller to obtain a water-based PU layer, drying the water-based PU layer in hot air at 35 ℃ after roll coating, and then embossing the whole dried PU-PVC composite film layer to obtain the PVC decorative film. This method of coating before embossing has the following drawbacks: the embossing has high requirements on the coating, is suitable for shallow embossing, and has the phenomenon of coating cracking in deep embossing, thereby not only causing the damage of the veneer effect, but also causing the problem of poor scratch-resistant and stain-resistant effect.
Disclosure of Invention
The invention aims to solve the problems and provides a stain-resistant scratch-resistant PVC decorative film and a preparation method thereof.
The technical scheme for solving the problems is to provide a stain-resistant scratch-resistant PVC decorative film which sequentially comprises a PVC bottom film layer, a pattern printing layer, a transparent protection film layer and a stain-resistant scratch-resistant coating, wherein the coating of the stain-resistant scratch-resistant coating comprises at least two curing coatings with different curing conditions.
The coating curing is the process of coating the coating on the coated object and forming a dry coating film (including hard film and soft film) by various ways. The curing method of the coating comprises the following steps: air oxidation curing, solvent volatilization curing, thermal reaction or two-component chemical reaction curing, radiation (molecular fusion) curing, melt curing and infrared catalytic thermal reaction curing. The air oxidation curing is to dry the coating into a film by utilizing oxygen in the air, and the oxygen in the air and the coating generate a crosslinking reaction to form a dry coating film. This cross-linking reaction occurs with highly viscous drying oils, but the reaction is very slow, sometimes up to several weeks, to achieve complete cure. Such coatings include oil-based paints, ester-based paints, and the like. The solvent is volatilized and solidified, namely the solvent is volatilized through the surface of the coating, solid matters of the coating are left and attached to the surface of the coated object, and a dry solid coating film is formed. The solvent volatilization curing coating comprises the following varieties: nitrolacquer, perchloroethylene lacquer, chlorinated rubber lacquer, acrylic lacquer, etc. The coating film solidified by solvent volatilization can be redissolved by proper solvent, and the solvent volatilization is favorable for the operation of the coating repairing and renewing process. Plastic and rubber products of wooden products, metal products and non-metal products are coated with the paint in a large quantity. The coating cured by thermal reaction or chemical reaction generates chemical crosslinking reaction under the action of heating or catalyst (including assimilating agent), and various film forming material components in the coating are fused with each other and crosslinked to form a coating film with a three-dimensional network structure. After being cured, the coating can not be dissolved by a solvent or softened by heat, and the physical and chemical properties of the coating are better than those of a solvent volatile coating. Such as amino alkyd paints, amino acrylic paints, epoxy resin paints, two-component polyurethane paints, and the like. Radiation curable coatings refer to both ultraviolet light curing and electron fast curing types. The commonly used radiation curing coating is an ultraviolet curing coating, and the light wave for ultraviolet curing is near ultraviolet light with the wavelength of 300-400 nm. The wet coating containing the photoinitiator generates free radicals under the irradiation of ultraviolet light, and the free radicals initiate unsaturated monomers or resins to perform polymerization reaction, so that thousands of dry coating can be cured in a very short time (a few seconds to a few minutes). Such as acrylic photocurable coatings, polyester photocurable coatings, acrylic/epoxy photocurable coatings, and the like. Such coatings may be used on wood products, plastic products, rubber products, metal products, and the like. Melt-cured coatings generally refer to solid powder type coating products. The coating modes adopted by the products are two types: the first is to heat the coated object to a specified temperature, then spray or dip-coat the solid powder coating on the coated object, and then cure the solid powder coating into a dry film as required. The second method is to spray the solid powder coating on the object to be coated by electrostatic spraying method at normal temperature, and then bake and solidify to form a film at a specified temperature. Epoxy powder coatings, polyester powder coatings, road-marking fused line coatings and the like belong to the coatings. The N-AIN coating can be used for metal products and road painting lines. The infrared catalytic thermal reaction curing is a method for curing a coating by utilizing the infrared energy absorbed by the coating to convert into heat energy. The infrared curing coating has the advantages of preventing the occurrence of orange peel and pinholes on the surface of a paint film and improving the glossiness of the paint film. The curing sequence is from inside to outside, when the inner layer is cured, the outer layer is still liquid, the solvent in the inner layer coating film is firstly evaporated, and when the outer layer is completely cured, no solvent exists in the coating film, so that the orange peel and pinhole phenomena are avoided, and the gloss of the coating film is improved.
Preferably, the curing coating comprises one or more of a thermosetting coating, a photo-curing coating, a moisture curing coating and a two-component curing coating.
Preferably, the light-cured coating comprises one or more of unsaturated polyester light-cured coating, epoxy acrylate light-cured coating, polyurethane acrylate light-cured coating, polyester acrylate light-cured coating and polyether acrylate light-cured coating.
Preferably, the thermosetting coating comprises one or more of amino alkyd coating, amino acrylic coating and epoxy resin coating.
Preferably, the moisture curing coating comprises one or more of silane modified polyether coating and silane modified polyurethane coating.
Preferably, the two-component cured coating comprises a two-component polyurethane coating.
Preferably, the thickness of the PVC bottom film layer is 0.08-0.12 mm.
Preferably, the thickness of the transparent protective film layer is 0.04-0.06 mm.
The invention also aims to provide a preparation method of the stain-resistant scratch-resistant PVC decorative film, which comprises the following steps:
s1, coating the paint of the stain-resistant scratch-resistant coating on the transparent protective film layer, and then carrying out primary curing to obtain a film a, wherein the primary curing condition is the curing condition of a certain cured paint in the stain-resistant scratch-resistant coating;
s2, printing a pattern printing layer on the PVC bottom film layer to obtain a film b;
and S3, laminating the film a and the film b by a compression roller with grains, and then carrying out secondary curing under the condition of curing the residual curing coating in the stain-resistant scratch-resistant coating to obtain the stain-resistant scratch-resistant PVC decorative film.
Preferably, the temperature of the press roll is 110-130 ℃ when the laminating is carried out by the press roll machine.
The invention has the beneficial effects that:
1. the pvc basement membrane layer that this application set up plays supporting role, and pattern printing layer can provide lifelike pattern, and transparent protection film layer has the effect of protection pattern, and the resistant scraping-resistant coating of resistant uppermost can play resistant scraping-resistant effect to the pvc membrane.
2. The utility model provides a resistant dirty resistant coating of scraping is through setting up the different solidification coating of two kinds of curing conditions for at least need carry out secondary cure, just can make resistant dirty resistant coating of scraping solidify entirely. When only once solidification is carried out, the stain-resistant scratch-resistant coating can be in a semi-solidified state, and the embossing is carried out again, so that the embossing effect with good concave-convex texture can be realized, and the cracking of the stain-resistant scratch-resistant coating cannot be caused.
Drawings
FIG. 1 is a schematic structural view of a stain and scratch resistant PVC decorative film;
in the figure: PVC bottom film layer-1, pattern printing layer-2, transparent protective film layer-3, and stain-resistant and scratch-resistant coating layer-4.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
A stain-resistant scratch-resistant PVC decorative film comprises a PVC bottom film layer 1, a pattern printing layer 2, a transparent protective film layer 3 and a stain-resistant scratch-resistant coating 4 in sequence as shown in figure 1.
The preparation method of the stain-resistant scratch-resistant PVC decorative film comprises the following steps:
s1, preparing a coating of the stain-resistant scratch-resistant coating 4, wherein in the embodiment, the coating is a photocuring coating or a thermocuring coating.
The photocureable coating is polyurethane acrylate photocureable coating, and the preparation method comprises the following steps: according to the mass parts, 60 parts of polyurethane acrylate serving as an oligomer, 40 parts of styrene serving as an active diluent, 3 parts of bis-benzoylphenylphosphine oxide (BAPO) serving as a photoinitiator and 5 parts of a leveling agent are uniformly mixed. Curing the film after being treated for 30-60s under UV light.
The thermosetting coating is epoxy resin coating, and the preparation method comprises the following steps: according to the mass portion, 5 portions of epoxy resin and 3 portions of methylated amino resin are dissolved in a mixed solvent of ethylene glycol monobutyl ether and dimethyl nicotinate, and the mixture is decompressed and pumped to be bubble-free below 25 ℃. The mixture is heated at the temperature of 110 ℃ and 130 ℃ for 15-20min to be cured.
On the transparent protective film layer 3 having a thickness of 0.05mm, first, a layer of epoxy resin paint was coated, then, a layer of urethane acrylic photocurable paint was coated, and then, the film was subjected to UV light for 45 seconds to obtain a film a.
S2, printing water-based ink on the PVC base film layer 1 with the thickness of 0.10mm, and printing a required pattern (namely a printed pattern printing layer 2) to obtain a film b.
S3, after the film a and the film b are attached according to the structure of the figure 1, attaching the films through a roller with grains, wherein the temperature of the roller is controlled at 130 ℃. Meanwhile, under the temperature condition, the epoxy resin coating starts to be thermally cured, so that the full curing of the stain-resistant scratch-resistant coating 4 is completed while the decoration film reaches the required texture, and the stain-resistant scratch-resistant PVC decoration film is obtained.
Example 2
A stain-resistant scratch-resistant PVC decorative film sequentially comprises a PVC bottom film layer 1, a pattern printing layer 2, a transparent protective film layer 3 and a stain-resistant scratch-resistant coating 4.
The preparation method of the stain-resistant scratch-resistant PVC decorative film comprises the following steps:
s1, preparing a coating of the stain-resistant scratch-resistant coating 4, wherein in the embodiment, the coating is a photocureable coating and a moisture photocureable coating.
The photocureable coating is polyether acrylate photocureable coating, and the preparation method comprises the following steps: according to the mass parts, 70 parts of polyether acrylate serving as an oligomer, 20 parts of N-vinyl pyrrolidone serving as an active diluent, 5 parts of dimethoxy benzyl phenyl ketone serving as a photoinitiator and 7 parts of a leveling agent are uniformly mixed. Curing the film after being treated for 30-60s under UV light.
The moisture curing coating is a silane modified polyether coating, and the preparation method comprises the following steps: according to the mass parts, 60 parts of silane modified polyether polymer, 2 parts of water removal agent, 40 parts of heavy calcium carbonate, 3 parts of fumed silica and 3 parts of aminosilane are uniformly mixed. Wherein, the silane modified polyether polymer is synthesized by taking hydroxyl-terminated polyether and 3-isocyanate propyl trimethoxy silane as raw materials and dibutyltin dilaurate as a catalyst. Curing the mixture after being placed in an environment with the relative air humidity of 60% -70% for 1-2 h.
After mixing the two coatings, the mixture was coated on a transparent protective film layer 3 having a thickness of 0.04mm, and then placed in an environment having a relative air humidity of 65% for 1.5 hours, to obtain a film a.
S2, printing water-based ink on the PVC base film layer 1 with the thickness of 0.08mm, and printing a required pattern (namely a printed pattern printing layer 2) to obtain a film b.
And S3, laminating the film a and the film b by a roller press with grains, wherein the temperature of the roller press is controlled at 120 ℃, and embossing is completed. And then the film is placed under the UV illumination for treatment for 30s, and the full curing of the stain-resistant scratch-resistant coating 4 is completed, so that the stain-resistant scratch-resistant PVC decorative film is obtained.
Example 3
A stain-resistant scratch-resistant PVC decorative film sequentially comprises a PVC bottom film layer 1, a pattern printing layer 2, a transparent protective film layer 3 and a stain-resistant scratch-resistant coating 4.
The preparation method of the stain-resistant scratch-resistant PVC decorative film comprises the following steps:
s1, preparing a coating of the stain-resistant scratch-resistant coating 4, wherein in the embodiment, the coating is a photocureable coating or a two-component photocureable coating.
The photocureable coating is polyurethane acrylate photocureable coating, and the preparation method comprises the following steps: according to the mass parts, 50 parts of urethane acrylate as an oligomer, 50 parts of styrene as an active diluent, 8 parts of bis-benzoylphenylphosphine oxide (BAPO) as a photoinitiator and 4 parts of a leveling agent are uniformly mixed. Curing the film after being treated for 30-60s under UV light.
The two-component curing coating is a two-component polyurethane coating, and the preparation method comprises the following steps: preparation of a component A: mixing 1 part of castor oil and 1.5 parts of calcium carbonate according to the parts by mass, placing the mixture at minus 0.09MPa and 110 ℃ for vacuum dehydration for 1.5h, cooling to room temperature, adding a catalyst DBTDL and a cross-linking agent MOCA which are 0.1 percent of the weight of the component A, and uniformly stirring. B, preparation of a component B: after castor oil was dehydrated under vacuum at 110 ℃ for 1.5 hours, castor oil was added to TDI under stirring, and reacted at 70 ℃ for 3 hours under a dry nitrogen atmosphere. The component A and the component B are mixed and then can be solidified at room temperature.
Coating a layer of two-component curing coating on a transparent protective film layer 3 with the thickness of 0.06mm, then coating a layer of polyurethane acrylic acid photocuring coating, and then placing at room temperature for 5 hours to obtain a film a.
S2, printing water-based ink on the PVC base film layer 1 with the thickness of 0.12mm, and printing a required pattern (namely a printed pattern printing layer 2) to obtain a film b.
And S3, laminating the film a and the film b by a roller press with grains, wherein the temperature of the roller press is controlled at 110 ℃, and embossing is completed. And then the film is placed under the UV illumination for treatment for 60s, and the full curing of the stain-resistant scratch-resistant coating 4 is completed, so that the stain-resistant scratch-resistant PVC decorative film is obtained.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a resistant dirty resistant PVC decorating film which characterized in that: the anti-stain scratch-resistant coating sequentially comprises a PVC bottom film layer (1), a pattern printing layer (2), a transparent protective film layer (3) and a stain-resistant scratch-resistant coating (4), wherein the coating of the stain-resistant scratch-resistant coating (4) comprises at least two curing coatings with different curing conditions.
2. The stain-resistant scratch-resistant PVC decorative film according to claim 1, wherein: the curing coating comprises one or more of a thermosetting coating, a light curing coating, a moisture curing coating and a two-component curing coating.
3. The stain-resistant scratch-resistant PVC decorative film according to claim 1, wherein: the thickness of the PVC bottom film layer (1) is 0.08-0.12 mm.
4. The stain-resistant scratch-resistant PVC decorative film according to claim 1, wherein: the thickness of the transparent protective film layer (3) is 0.04-0.06 mm.
5. The stain-resistant scratch-resistant PVC decorative film according to claim 2, wherein: the photocureable coating comprises one or more of unsaturated polyester photocureable coating, epoxy acrylate photocureable coating, polyurethane acrylate photocureable coating, polyester acrylate photocureable coating and polyether acrylate photocureable coating.
6. The stain-resistant scratch-resistant PVC decorative film according to claim 2, wherein: the thermosetting coating comprises one or more of amino alkyd coating, amino acrylic coating and epoxy resin coating.
7. The stain-resistant scratch-resistant PVC decorative film according to claim 2, wherein: the moisture curing coating comprises one or more of silane modified polyether coating and silane modified polyurethane coating.
8. The stain-resistant scratch-resistant PVC decorative film according to claim 2, wherein: the two-component curing coating comprises a two-component polyurethane coating.
9. A method for preparing the stain-resistant scratch-resistant PVC decorative film according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1, coating the paint of the stain-resistant scratch-resistant coating (4) on the transparent protective film layer (3), and then carrying out primary curing to obtain a film a, wherein the primary curing condition is the curing condition of a certain cured paint in the stain-resistant scratch-resistant coating (4);
s2, printing a pattern printing layer (2) on the PVC bottom film layer (1) to obtain a film b;
and S3, laminating the film a and the film b by a grain press, and then carrying out secondary curing under the curing condition of the residual curing coating in the stain-resistant scratch-resistant coating (4) to obtain the stain-resistant scratch-resistant PVC decorative film.
10. The preparation method of the stain-resistant scratch-resistant PVC decorative film according to claim 9, which is characterized in that: when the laminating is carried out by the roller pressing machine, the temperature of the pressing roller is 110-130 ℃.
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| CN113372598A (en) * | 2021-06-29 | 2021-09-10 | 海宁帝龙永孚新材料有限公司 | PVC protective film and preparation method thereof |
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| CN115610058A (en) * | 2022-10-28 | 2023-01-17 | 浙江华清包装材料有限公司 | Metal decorative film and PVC thermal transfer printing production process of the decorative film |
| CN121022244A (en) * | 2025-10-30 | 2025-11-28 | 广东天安高分子科技有限公司 | Self-healing scratch-resistant coating, PVC decorative film and its preparation method |
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Application publication date: 20201124 |