CN110591512A - Ultraviolet-curing vacuum coating wrinkle primer and preparation method thereof - Google Patents
Ultraviolet-curing vacuum coating wrinkle primer and preparation method thereof Download PDFInfo
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- CN110591512A CN110591512A CN201910758979.1A CN201910758979A CN110591512A CN 110591512 A CN110591512 A CN 110591512A CN 201910758979 A CN201910758979 A CN 201910758979A CN 110591512 A CN110591512 A CN 110591512A
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- 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
- C09D163/10—Epoxy resins modified by unsaturated compounds
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/28—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for wrinkle, crackle, orange-peel, or similar decorative effects
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
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- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The application discloses an ultraviolet curing vacuum coating wrinkle primer and a preparation method thereof, and the ultraviolet curing vacuum coating wrinkle primer comprises the following components in parts by weight: 15-25 parts of bisphenol A epoxy acrylate; 8-12 parts of aliphatic polyurethane diacrylate; 6-13 parts of tripropylene glycol diacrylate; 10-18 parts of trimethylolpropane triacrylate; 4-8 parts of acrylic acid modified alkyd resin; 2-5 parts of a photoinitiator; 0.08-0.2 part of a leveling agent; 45-55 parts of a solvent. Through reasonable matching of the components, the cured coating can have the advantages of energy conservation, environmental protection, high efficiency, economy and the like of common UV paint, and has low curing energy and good wrinkle decoration effect.
Description
Technical Field
The application relates to the technical field of coatings, in particular to an ultraviolet-curing vacuum coating wrinkle primer and a preparation method thereof.
Background
The currently used wrinkle coating is a thermosetting coating, and the complete curing of the coating needs to be continuously baked at high temperature for several hours, so that the defects of complex production process, long time consumption, high energy consumption, low production efficiency, serious environmental pollution and the like exist. The Ultraviolet (UV) curing coating can be cured quickly at normal temperature, has the advantages of high production efficiency, energy conservation, environmental protection, economy and the like, and is a remarkable part in the coating industry. However, although the common ultraviolet curing vacuum coating has a strong metal mirror effect, the required decorative effect of wrinkles cannot be shown, so that it is necessary to develop a UV coating with a good wrinkle effect to simplify the production process of the existing wrinkle paint, improve the production efficiency, and reduce the energy consumption and environmental pollution.
Disclosure of Invention
The embodiment of the application provides an ultraviolet curing vacuum plating wrinkle primer and a preparation method thereof, which have good wrinkle decoration effect and comprehensive performance and overcome the defects of low production efficiency and environmental pollution of the existing thermosetting wrinkle coating. The adopted technical scheme is as follows:
on one hand, the ultraviolet curing vacuum coating wrinkle primer comprises the following components in parts by weight:
preferably, the viscosity of the bisphenol A epoxy acrylate is 20000-40000 cps/25 ℃.
Preferably, the photoinitiator is 1-hydroxycyclohexyl-phenyl ketone.
Preferably, the solvent is compounded by ethyl acetate, butyl acetate and isopropanol.
On the other hand, the product comprises a product body and a coating arranged on the surface of the product body, wherein the coating is obtained by curing the ultraviolet curing vacuum coating wrinkle primer.
Preferably, a coating layer is arranged on the coating layer.
Preferably, a finish paint layer is arranged on the coating layer.
On the other hand, the preparation method of the ultraviolet curing vacuum plating wrinkle primer comprises the following steps:
sequentially adding bisphenol A epoxy acrylate, aliphatic polyurethane diacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate into a stirring kettle according to a ratio, stirring and dissolving, adding acrylic acid modified alkyd resin and a photoinitiator, dispersing uniformly, adding a leveling agent and a solvent, stirring uniformly, and filtering.
The technical scheme provided by the embodiment of the application has at least the following beneficial effects:
through reasonable collocation of each component, the ultraviolet curing vacuum coating wrinkle primer disclosed by the application can take advantages of energy conservation, environmental protection, high efficiency, economy and the like of common UV paint into consideration, is low in curing energy, and has a good wrinkle decoration effect. For example, bisphenol A epoxy acrylate is used as a main active oligomer, which has low price and good comprehensive properties such as solvent resistance, glossiness and the like, and reduces the cost of the primer on the basis of ensuring the overall performance of the coating. The aliphatic polyurethane diacrylate is bifunctional, has good flexibility and good boiling resistance, can improve the adhesive force of a subsequent coating layer to a primer, and is low in viscosity, strong in diluting capability, low in curing shrinkage rate and good in flexibility by compounding tripropylene glycol diacrylate and trimethylolpropane triacrylate as an active diluent, so that the aliphatic polyurethane diacrylate plays a vital role in reducing the viscosity of a product and improving the wrinkle effect; the latter can reduce the viscosity of the product, improve the curing speed and endow the coating film with higher hardness. The acrylic acid modified alkyd resin is used as an important component, so that the primer can generate a wrinkle effect after being cured, the oil stain resistance of the primer can be improved, and shrinkage cavities are not easy to occur.
Detailed Description
The ultraviolet curing vacuum coating wrinkle primer provided by the embodiment of the application comprises the following components in parts by weight:
bisphenol A epoxy acrylate is used as a main film forming material, and through reasonable combination of various raw materials, the coating endows a better wrinkle effect on the premise of high cost performance, low viscosity, good construction performance and the like, and the defects that the original thermosetting wrinkle coating is low in production efficiency and poor in environment-friendly performance and the common ultraviolet curing vacuum electroplating coating is difficult to realize the wrinkle decoration effect are overcome. The principle is that the coating component contains a plurality of film forming materials with different reactivity, when the coating is cured, because the radiation intensity attenuates along with the depth of the coating, a cross-linking gradient is generated in the depth direction of the coating, the surface layer is cured and shrunk without limitation, then when the coating below the surface layer is cured, the shrinkage of the coating is restrained by the adhesive force between the coating and a substrate, the cohesive force caused by the tension of the inner layer acts on the shrunk upper layer, so that the upper layer is compressed, and the final coating surface generates a wrinkle effect.
The bisphenol A epoxy acrylate is used as a main active oligomer, has low price and good comprehensive properties such as solvent resistance, glossiness and the like, and reduces the cost of the primer on the basis of ensuring the overall performance of the coating. The viscosity of the bisphenol A epoxy acrylate is preferably 20000-40000 cps/25 ℃, and the paint film can have better construction performance and comprehensive performance.
The aliphatic polyurethane diacrylate is bifunctional, has good flexibility and good boiling resistance, and mainly improves the adhesion force of a coating layer to a primer, but because the polymerization degree is poor, the reaction rate is low, excessive use can cause incomplete curing of a coating film, so that the coating film is fogged and whitened after subsequent coating, and the metal luster is lost, therefore, the tripropylene glycol diacrylate and the trimethylolpropane triacrylate are compounded to be used as an active diluent, and the tripropanediol diacrylate and the trimethylolpropane triacrylate have low viscosity, strong diluting capability, low curing shrinkage and good flexibility, and play an important role in reducing the viscosity of a product and improving the wrinkle effect; the latter can reduce the viscosity of the product, improve the curing speed and endow the coating film with higher hardness.
The acrylic acid modified alkyd resin is an important component which can generate a wrinkle effect after the primer is cured, and simultaneously can improve the oil stain resistance of the primer and is not easy to have shrinkage cavity.
The leveling agent can effectively reduce the surface tension of the system, so that the coating can well wet a substrate which is difficult to wet, and the generation of shrinkage cavities of the coating is prevented, and in an exemplary embodiment, the leveling agent is BYK-306.
The solvent is used for diluting the components, preferably the solvent is of a type which is less harmful to human bodies, and in an exemplary embodiment, the solvent is compounded by ethyl acetate, butyl acetate and isopropanol.
The ultraviolet light curing vacuum plating wrinkle primer is coated on the surface of a workpiece and cured to obtain a primer layer with good wrinkle decoration, the primer layer is vacuum-plated to show the wrinkle-like effect and the metal texture effect, and the material of the plated film layer comprises but is not limited to aluminum, indium, titanium and the like. The coating layer is further coated with finish paint, so that the wear resistance, corrosion resistance, weather resistance and the like of the coating layer are improved, and the coating layer can be colored, so that the coated part has metal luster of fifty colors.
In practical application, the ultraviolet curing vacuum coating wrinkle primer or finish paint can be coated on the surface of a workpiece by using an automatic spraying line, so that the coating efficiency and the primer applicability are improved. In an exemplary embodiment, the spray thickness is 15 to 25 μm, and the curing energy is 500 to 1200mJ/cm2. The material of the product is not particularly limited, and the product can be plastic, glass, ceramic and the like, in an exemplary embodiment, the product is made of ABS or PC material, and when the product is made of glass or ceramicWhen the ceramic or other materials which are not easy to adhere to the ceramic or other materials are used, the surface of the workpiece can be firstly treated to improve the adhesion of the primer, for example, a pretreatment layer can be adhered to the surface of the workpiece, or the surface characteristics of the workpiece can be changed by other physical or chemical methods.
The embodiment also provides a preparation method of the ultraviolet curing vacuum plating wrinkle primer, which comprises the following steps:
sequentially adding bisphenol A epoxy acrylate, aliphatic polyurethane diacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate into a stirring kettle according to a ratio, stirring and dissolving, adding acrylic acid modified alkyd resin and a photoinitiator, dispersing uniformly, adding a leveling agent and a solvent, stirring uniformly, and filtering.
The present application is described in detail below by way of exemplary embodiments.
In the following examples and comparative examples, the bisphenol A epoxy acrylate is selected from 6105-80 of Jiangsu Sandeli chemical Co., Ltd, and the viscosity is 30000-40000 cps/25 ℃; the aliphatic polyurethane diacrylate is selected from W300 of Guangzhou five-element materials science and technology company; tripropylene glycol diacrylate and trimethylolpropane triacrylate are obtained from Changxing materials industries, Inc. under the designations EM223 and EM231, respectively; the acrylic acid modified alkyd resin is selected from PJ9103 of paint-making factory, Inc. of Jiangmen; the photoinitiator is 1-hydroxycyclohexyl-phenyl ketone (Irgacure 184); the leveling agent is selected from BYK-306 of Bick chemical Co., Ltd, Germany; the solvents ethyl acetate, butyl acetate and isopropanol were commercially available and analytically pure.
The uv curable vacuum plating wrinkle primers of examples 1-2 and comparative examples 1-4 were prepared according to the formulation of table 1 by the following method:
s1, sequentially adding bisphenol A epoxy acrylate, aliphatic polyurethane diacrylate (if any), tripropylene glycol diacrylate and trimethylolpropane triacrylate into a stirring kettle according to the proportion, stirring and dissolving;
s2, continuously adding acrylic acid modified alkyd resin (if any) and a photoinitiator for uniform dispersion;
s3, adding the leveling agent and the solvent, uniformly stirring at a high speed of 1500-2000 r/min, and filtering with 600-mesh filter cloth.
TABLE 1 (parts by weight)
In order to test the performance of the primer, the primers prepared in each example and each comparative example are respectively sprayed on the surface of an ABS or PC material subjected to oil removal and dust removal treatment, the film thickness is controlled to be 15-25 mu m, the infrared leveling is carried out for 5-8 min at the temperature of (40 +/-5) DEG C, and the UV energy is 500-1200 mJ/cm2And curing to form a template. The film coating performance was tested and evaluated as follows:
(1) wet film condition and wrinkle effect: visual inspection was carried out.
(2) Adhesion force: tested according to GB/T9286-1998, with a distance of 1mm, adhesive tape No. 600 from 3M company; the results were rated on a scale of 0 to 5, with 0 being the best and 5 being the worst. The test items comprise two items of material adhesion and coating layer adhesion, wherein the test items evaluate the adhesion between the primer and the material; the latter evaluates the adhesion between the coating and the primer, and this example takes the aluminum coating as an example for testing.
(3) Gloss: tested according to GB/T9754-2007.
(4) Heat resistance: according to the test of GB/T1740-.
And (3) testing the flexibility of the paint film: referring to the test method of GB/T1731-93, a sample plate prepares a paint film on a tin plate with the thickness of 120mm multiplied by 25mm multiplied by (0.2-0.3) mm according to the specification of GB 1727-92, a test instrument is an QTX type paint film elasticity tester, and the tester consists of 6 steel shaft rods with different thicknesses, wherein the length of each shaft rod is 35mm, and the curvature radius is respectively 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 5mm and 7.5 mm.
TABLE 2
The results of the paint film property test are shown in table 2, and it can be seen that the primer of examples 1 and 2 has good adhesion with the substrate and the coating layer, low curing energy, good wrinkle effect, flexibility, glossiness and heat resistance. Comparative example 1 the tripropylene glycol diacrylate content was too low, which resulted in too shallow a wrinkle texture, affecting the decorative effect, while decreasing the flexibility of the paint film, comparative example 2 the tripropylene glycol diacrylate content was too high, and the trimethylolpropane triacrylate content was too low, which resulted in too deep a wrinkle texture, also affecting the decorative effect, while also increasing the curing energy. As can be seen from comparative example 3, when no aliphatic urethane diacrylate was added, the adhesion between the primer and the plating layer was significantly reduced, and the wrinkle effect was also affected to some extent. Comparative example 4 contains no acrylic-modified alkyd resin, and the wet film exhibited shrinkage and no wrinkle effect.
The above examples are illustrative of the present application, but the present application is not limited to the details of the foregoing embodiments, and various equivalent substitutions or simple modifications within the technical spirit of the present application by those skilled in the art should fall within the protection scope of the present application.
Claims (8)
1. The ultraviolet curing vacuum coating wrinkle primer is characterized by comprising the following components in parts by weight:
2. the UV-curable vacuum plating wrinkle primer as claimed in claim 1, wherein the viscosity of the bisphenol A epoxy acrylate is 20000-40000 cps/25 ℃.
3. The uv-curable vacuum coated wrinkle primer as claimed in claim 1, wherein the photoinitiator is 1-hydroxycyclohexyl-phenyl ketone.
4. The ultraviolet-curable vacuum-coated wrinkle primer as claimed in claim 1, wherein the solvent is compounded with ethyl acetate, butyl acetate, and isopropyl alcohol.
5. An article comprising an article body and a coating disposed on the surface of the article body, wherein the coating is obtained by curing the ultraviolet-curable vacuum-coated wrinkle primer according to any one of claims 1 to 4.
6. The article of claim 5 wherein the coating is provided with a coating.
7. The article of claim 6 wherein the coating is provided with a topcoat layer.
8. The method for preparing the ultraviolet-curing vacuum plating wrinkle primer as described in any one of claims 1 to 4, characterized by comprising:
sequentially adding bisphenol A epoxy acrylate, aliphatic polyurethane diacrylate, tripropylene glycol diacrylate and trimethylolpropane triacrylate into a stirring kettle according to a ratio, stirring and dissolving, adding acrylic acid modified alkyd resin and a photoinitiator, dispersing uniformly, adding a leveling agent and a solvent, stirring uniformly, and filtering.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393894A (en) * | 2020-05-24 | 2020-07-10 | 华月圆 | UV orange-peel auxiliary and orange-peel paint |
| CN111440476A (en) * | 2020-05-24 | 2020-07-24 | 华月圆 | Orange-peel auxiliary and orange-peel paint |
| CN111440475A (en) * | 2020-05-24 | 2020-07-24 | 华月圆 | UV orange-peel agent and orange-peel paint |
| CN114405792A (en) * | 2021-12-28 | 2022-04-29 | 上海创功通讯技术有限公司 | Method for forming crack texture on surface of workpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111393894A (en) * | 2020-05-24 | 2020-07-10 | 华月圆 | UV orange-peel auxiliary and orange-peel paint |
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| CN114405792A (en) * | 2021-12-28 | 2022-04-29 | 上海创功通讯技术有限公司 | Method for forming crack texture on surface of workpiece |
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