Enamel colored painting and preparation method thereof

Abstract

The invention discloses an enamel color painting and a preparation method thereof, and relates to the technical field of enamel color paintings. A specific amount of the naphthalene compound and the oily brightening agent are added into the oily ice flower paint, the temperature and the relative humidity of the environment during the reaction are controlled to be within a specific range, and the reaction is carried out under a windy condition, so that an ice crack effect can be formed on various substrates such as glass, stainless steel, copper, ceramic and rock materials; meanwhile, the ice crack road is high in color saturation, more uniform, more regular and better in texture, and the adhesive force between the coating and a substrate is higher.

Description

Technical Field

[0001] This application relates to the field of enamel painting technology, specifically to an enamel painting and its preparation method. Background Technology

[0002] The conventional process for making enamel glass paintings is as follows: First, paint lines mixed with glue are used to simulate the traditional cloisonné technique, outlining the pattern on the glass substrate. Then, oil-based ice flower paint and oil-based pigments are mixed and applied, and allowed to cure, forming a pattern with a colored ice crackle effect. However, this process has several obvious drawbacks: First, the ice crackle patterns are unevenly distributed, have irregular directions, and lack depth, resulting in a rough overall texture. Second, the adhesion between the coating and the glass substrate is poor, making it prone to peeling off. Third, this process is not suitable for use on other substrates, limiting its application scenarios and making it difficult to meet diverse decorative design needs. Summary of the Invention

[0003] Based on the shortcomings of existing technologies, the purpose of this application is to provide an enamel painting and its preparation method, which can form an ice crack effect on various substrates such as glass, metal, and ceramics, and the ice crack pattern is more uniform and regular, with better texture and stronger adhesion between the coating and the substrate.

[0004] To achieve the above objectives, firstly, this application provides a method for preparing enamel paintings, comprising the following steps: Perform wire cloisonné on the substrate; After mixing and dispersing oil-based ice flower paint, naphthalene compounds and oil-based brighteners, the mixture is applied, reacted, and dried to obtain enamel painting. The reaction is carried out under environmental conditions of temperature 20~50℃, humidity 50%~75%, and wind. Based on the mass of the oil-based ice flower paint, the naphthalene compound accounts for 22% to 26% of the mass, and the brightening agent accounts for 4% to 5.5% of the mass.

[0005] During their research, the inventors discovered that adding naphthalene compounds to oil-based ice flower paint can improve the uniformity, regularity, depth, and size of the ice crack patterns. This may be because naphthalene compounds can increase the molecular structure of oil-based ice flower paint. Adding brighteners can enhance the gloss of enamel paintings, but excessive addition can degrade the ice crack effect. By simultaneously controlling the amount of naphthalene compounds and brighteners within the aforementioned specific ranges, and by conducting the reaction under specific temperature, relative humidity, and windy conditions, ice crack effects can be formed on various substrates such as glass, metals (such as stainless steel and copper), and ceramics. Moreover, the ice crack patterns are more uniform and regular, the texture is better, the adhesion between the coating and the substrate is stronger, and the color saturation is higher.

[0006] For example, based on the mass of the oil-based ice flower paint, the mass of the naphthalene compound is 22%, 23%, 24%, 25%, 26%, or any two of the above values ​​within a range.

[0007] For example, based on the mass of the oil-based ice flower paint, the mass of the brightening agent is 4%, 4.2%, 4.4%, 4.6%, 4.8%, 5%, 5.2%, 5.5%, or any range formed by any two of the above values.

[0008] For example, during the reaction, the ambient temperature is 20°C, 22°C, 24°C, 26°C, 28°C, 30°C, 32°C, 34°C, 36°C, 38°C, 40°C, 42°C, 45°C, 48°C, 50°C, or any range formed by two of the above values.

[0009] For example, during the reaction, the relative humidity of the environment is 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64%, 66%, 68%, 70%, 72%, 75%, or any range formed by any two of the above values.

[0010] In some embodiments, the naphthalene compounds include at least one of naphthol, methylnaphthylamine, and 1,8-naphthalene anhydride.

[0011] In one embodiment, the naphthol includes α-naphthol.

[0012] When the naphthalene compounds include α-naphthol, it is more beneficial to improve the uniformity, depth, regularity of orientation, and size of ice crack patterns.

[0013] In some embodiments, the oil-based brightener is an acrylic brightener.

[0014] In some embodiments, the oil-based ice flower paint contains the following components in weight percentage: 20%~30% polyamine resin, 30%~45% cyclohexanone, 8%~15% 4-methyl-2-pentanone, and 25%~40% mineral glaze; wherein the mineral glaze contains the following components in weight percentage: 38%~45% quartz powder, 20%~25% alumina, 7%~13% zinc oxide, and 20%~30% glass powder.

[0015] For example, the mass percentage of polyamine resin in the oil-based ice flower paint is 20%, 22%, 24%, 26%, 28%, 30%, or any range formed by two of the above values.

[0016] For example, the mass percentage of cyclohexanone in the oil-based ice flower paint is 30%, 32%, 34%, 36%, 38%, 40%, 42%, 45%, or any range formed by any two of the above values.

[0017] For example, the mass percentage of 4-methyl-2-pentanone in the oil-based ice flower paint is 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, or any range formed by any two of the above values.

[0018] For example, the mass percentage of mineral glaze in the oil-based ice flower paint is 25%, 26%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, or any range formed by any two of the above values.

[0019] For example, the mass percentage of quartz powder in the mineral glaze is 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, or any range formed by any two of the above values.

[0020] For example, the mass percentage of alumina in the mineral glaze is 20%, 21%, 22%, 23%, 24%, 25%, or any range formed by two of the above values.

[0021] For example, the zinc oxide content in the mineral glaze is 7%, 8%, 9%, 10%, 11%, 12%, 13% by mass or any two of the above values ​​within a range.

[0022] For example, the mass percentage of glass powder in the mineral glaze is 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, or any two of the above values ​​within a range.

[0023] In some embodiments, during the reaction, a fan is used to generate airflow, and the fan blades rotate at a speed of 150 to 600 revolutions per minute. For example, the fan blade speed may be 150, 200, 250, 300, 350, 400, 450, 500, 550, 600 revolutions per minute, or a range formed by any two of the above values.

[0024] In some embodiments, the substrate material includes at least one of glass, stainless steel, copper, ceramic, and rock materials.

[0025] In some embodiments, the substrate is plate-shaped.

[0026] In some embodiments, during the mixing and dispersion of oil-based ice flower paint, naphthalene compounds and oil-based brighteners, mineral pigments and solvents are also introduced for mixing and dispersion. The mineral pigments account for 0-1% of the mass of the oil-based ice flower paint, and the solvent accounts for 0-15% of the mass of the solvent.

[0027] In some embodiments, the solvent includes 4-methyl-2-pentanone.

[0028] Mineral pigments can be added according to the desired color, such as various color systems of modern synthetic mineral pigments.

[0029] In some embodiments, the drying method is air drying.

[0030] In some embodiments, agent A and agent B in epoxy resin AB type adhesive are mixed and dispersed at a mass ratio of (1.8~2.5):1, and pigments and additives are added for dispersion to obtain cloisonné material with filamentous texture. The additive is a defoamer, and the mass of the additive is 0.4%~0.5% of the mass of the epoxy resin AB type adhesive. The cloisonné material is used to cloisonné on the substrate and then cured.

[0031] In epoxy resin type AB adhesive, component A is epoxy resin and component B is a curing agent. Controlling the mass ratio of component A to component B within the range of (1.8~2.5:1) ensures that the cured adhesive not only has suitable hardness and good elasticity but also stronger adhesion. For example, the mass ratio of component A to component B can be 1.8:1, 1.9:1, 2:1, 2.1:1, 2.2:1, 2.3:1, 2.4:1, 2.5:1, or any range formed by two of the above values.

[0032] When the mass of the additive is 0.4% to 0.5% of the mass of the epoxy resin AB type adhesive, the viscosity of the cloisonné filament material is more suitable. This results in better filament stability, reducing the likelihood of collapse, and ensuring stable color even when baking is used for subsequent curing. For example, the mass of the additive can be 0.4%, 0.42%, 0.44%, 0.46%, 0.48%, 0.5% of the mass of the epoxy resin AB type adhesive, or any range formed by two of the above values.

[0033] Defoamers can be selected by referring to existing technologies for cloisonné enamel materials, such as at least one of silicone oil and mineral oil.

[0034] In some embodiments, the diameter of the cloisonné wire is 0.35~20mm, such as 0.35mm, 0.5mm, 0.8mm, 1mm, 3mm, 5mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm or any range formed by two of the above values.

[0035] In some embodiments, the step of performing cloisonné on the substrate using the cloisonné material is as follows: The cloisonné material is placed in a bag, one corner of the bag is removed to form an opening, and the bag is squeezed to expel the cloisonné material from the opening to perform cloisonné on the substrate.

[0036] By adjusting the size of the opening, the thickness of the cloisonné wire can be adjusted. For example, cutting off 0.3mm from one corner of the bag at a 90° angle (i.e., in an "L" shape) will extrude wire with a diameter of 0.35~0.5mm; or cutting off 0.5mm will extrude wire with a diameter of 0.6~1mm, and so on, to directly extrude wire with a diameter of 10~20mm.

[0037] In some embodiments, the colorant is a color powder, and / or a color paste and talc. In one embodiment, the mass ratio of the color paste to talc is (0.3~0.5):1.

[0038] In some embodiments, the mass of the colorant is 40% to 60% of the mass of the epoxy resin AB type adhesive.

[0039] In some embodiments, the curing is performed by heating, with the curing temperature below 200°C and the curing time below 60 minutes. In one embodiment, the curing temperature is 120~140°C.

[0040] In some embodiments, the curing is carried out by natural air drying, and the curing time is 48 hours.

[0041] Secondly, this application also provides enamel paintings prepared by the aforementioned method.

[0042] Compared with the prior art, the beneficial effects of this application are as follows: By adding a specific amount of naphthalene compounds and oily brighteners to the oil-based ice flower paint, and controlling the temperature and relative humidity of the reaction environment within a specific range and the reaction being carried out under windy conditions, this application can form an ice crack effect on various substrates such as glass, metal, and ceramics. At the same time, the ice crack pattern not only has high color saturation, but is also more uniform and regular, with better texture and stronger adhesion between the coating and the substrate. Attached Figure Description

[0043] Figure 1The structural diagram of the intermediate product obtained by cloisonné in Example 1 is shown, wherein 1-base, 2-cloisonné wire, 3-position of enamel paint to be applied in the pattern, and 4-position of enamel paint to be applied in the empty space. Figure 2 A photograph of the enamel painting obtained in Example 1; Figure 3 A photograph of the enamel painting obtained in Example 2; Figure 4 A photograph of the enamel painting obtained in Comparative Example 2; Figure 5 A photograph of the enamel painting obtained in Comparative Example 3; Figure 6 A photograph of the enamel painting obtained in Comparative Example 4; Figure 7 A photograph of the enamel painting obtained in Comparative Example 5; Figure 8 A photograph of the enamel painting obtained in Comparative Example 6. Detailed Implementation

[0044] To better illustrate the purpose, technical solutions, and advantages of this application, the following description, in conjunction with specific embodiments and comparative examples, aims to provide a detailed understanding of the content of this application, rather than limiting it. All other embodiments obtained by those skilled in the art without inventive effort are within the protection scope of this application. Unless otherwise specified, the experimental reagents and instruments involved in the implementation of this application are commonly used reagents and instruments. In this application, the technical features described in an open-ended manner include both closed-ended technical solutions composed of the listed features and open-ended technical solutions that include the listed features.

[0045] Acrylic brightening agent 1: Manufacturer: Guangzhou Yixin New Materials Co., Ltd., Model: LGH-8994; Acrylic brightening agent 2: Manufacturer: Guangzhou Wanhua New Materials, Model: GRN-8106.

[0046] Example 1 This embodiment provides a method for preparing enamel paintings, including the following steps: Epoxy resin AB type adhesive A and B are mixed and dispersed at a mass ratio of 2:1. 1200 mesh lapis lazuli powder and defoamer (silicone oil) are added and dispersed to obtain a cloisonné material with a golden filament texture. Based on the mass of epoxy resin AB type adhesive, the mass of lapis lazuli powder is 55% and the mass of the additives is 0.5%. Epoxy resin AB type adhesive A and B are mixed and dispersed at a mass ratio of 2:1. 800-mesh silver powder and defoamer (silicone oil) are added and dispersed to obtain a cloisonné material with a silvery filamentous texture. The mass of silver powder is 30% and the mass of additives is 0.5% based on the mass of epoxy resin AB type adhesive. Epoxy resin AB type adhesive A and B are mixed and dispersed at a mass ratio of 2:1. Black color paste, talc powder, and defoamer (silicone oil) are added and dispersed to obtain a cloisonné material with black filamentous texture. Based on the mass of epoxy resin AB type adhesive, the mass of black color paste is 10%, the mass of talc powder is 35%, and the mass of additives is 0.5%. Epoxy resin AB type adhesive A and B are mixed and dispersed at a mass ratio of 2:1. Color paste, talc powder, and defoamer (silicone oil) are added and dispersed to obtain cloisonné material with colored filamentous texture. Based on the mass of epoxy resin AB type adhesive, the mass of color paste is 10%, the mass of talc powder is 35%, and the mass of additives is 0.5%. The above cloisonné material is used to cloisonné on a glass plate and cured at 130℃ for 30 minutes; Add 15g solvent (4-methyl-2-pentanone), 220g α-naphthol and 40g acrylic brightener 1 to 1000g oil-based ice flower paint, then add 0.5g mineral pigment, fill in the pattern and empty spaces on the glass, react for 40 minutes at an ambient temperature of 25℃, relative humidity of 65%, and fan speed of 600 rpm, and let it air dry naturally indoors to obtain enamel painting; The oil-based ice flower paint used contains the following components by weight percentage: 24% polyamine resin, 35% cyclohexanone, 10% 4-methyl-2-pentanone, and 31% mineral glaze. The mineral glaze contains the following components by weight percentage: 45% quartz powder, 22% alumina, 9% zinc oxide, and 24% glass powder.

[0047] Example 2 This embodiment provides a method for preparing enamel painting, which differs from Embodiment 1 in that α-naphthol is completely replaced by methylnaphthylamine and the amount of methylnaphthylamine is 230g, and the amount of acrylic brightener 1 is 50g. During the reaction, the ambient temperature was 26℃, the relative humidity was 70%, the fan speed was 300 rpm, and the reaction time was 30 minutes.

[0048] Example 3 This embodiment provides a method for preparing enamel painting, which differs from Embodiment 1 in that 1,8-naphthalene anhydride is used to completely replace α-naphthol and the amount of 1,8-naphthalene anhydride is 260g, and acrylic brightener 2 is used to completely replace acrylic brightener 1 and the amount of acrylic brightener 2 is 55g. During the reaction, the ambient temperature was 50℃, the relative humidity was 50%, the fan speed was 150 rpm, and the reaction time was 60 minutes.

[0049] Example 4 This embodiment provides a method for preparing enamel paintings, which differs from Embodiment 1 in that a ceramic plate is used instead of a glass plate.

[0050] Example 5 This embodiment provides a method for preparing enamel paintings, which differs from Embodiment 3 in that a copper plate is used instead of a glass plate.

[0051] Comparative Example 1 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that α-naphthol is not added.

[0052] Comparative Example 2 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the amount of α-naphthol used is 200g.

[0053] Comparative Example 3 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the amount of α-naphthol used is 286g.

[0054] Comparative Example 4 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the amount of α-naphthol used is 330g.

[0055] Comparative Example 5 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the amount of α-naphthol used is 370g.

[0056] Comparative Example 6 This comparative example provides a method for preparing enamel painting, which differs from Example 1 in that the amount of acrylic brightener 1 used is 60g.

[0057] Comparative Example 7 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that no fan is turned on during the reaction.

[0058] Comparative Example 8 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the ambient temperature during the reaction is 15°C.

[0059] Comparative Example 9 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the ambient temperature during the reaction is 80°C.

[0060] Comparative Example 10 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the relative humidity of the environment during the reaction is 40%.

[0061] Comparative Example 11 This comparative example provides a method for preparing enamel paintings, which differs from Example 1 in that the relative humidity of the environment is 85% during the reaction.

[0062] Comparative Example 12 This comparative example provides a method for preparing enamel paintings, which differs from Comparative Example 1 in that a ceramic plate is used instead of a glass plate.

[0063] Comparative Example 13 This comparative example provides a method for preparing enamel paintings, which differs from Comparative Example 1 in that a copper plate is used instead of a glass plate.

[0064] The enamel paintings obtained in the above embodiments and comparative examples were subjected to the following tests: Crack detection: Visually observe the direction of the ice cracks in the enamel painting, determine the number of deviations and the strength of the regularity, and observe whether there are any abnormalities such as whitening or cracking in the lines; Adhesion test: Using the same knife, the blade is held at a 40° angle to the coating surface and scraped in the same direction. By gradually applying force, the level of force required to first peel or flake off the coating is recorded, which is the adhesion level. The higher the level, the greater the adhesion.

[0065] The test results are shown in Table 1.

[0066] Table 1 As can be seen from the above data, the ice crack patterns formed in the various embodiments of this application have good regularity, high uniformity, good texture, and strong adhesion to the substrate.

[0067] Comparative Examples 1 and 12-13 did not use naphthalene compounds, resulting in poor regularity, uniformity, and depth of the ice crack patterns on the glass plates, leading to poor texture. The coatings on ceramic or copper plates were flat with no obvious radial patterns. Comparative Example 3 used too little naphthalene compounds, resulting in a coating biased towards only three directions, low uniformity, and whitening, resulting in poor texture. Comparative Examples 3-5 used excessive naphthalene compounds, resulting in whitening and peeling of the coating. Comparative Example 5 added excessive oily brightener, resulting in a flat coating with no obvious radial patterns. Comparative Example 7 did not use a fan during the reaction, resulting in a flat coating with no obvious radial patterns. Comparative Examples 8-11 had excessively low or high ambient temperature or relative humidity during the reaction, resulting in poor ice crack pattern effects.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit the scope of protection of this application. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the substance and scope of the technical solutions of this application.

Claims

1. A method for preparing enamel paintings, characterized in that, Includes the following steps: Perform wire cloisonné on the substrate; Oil-based ice flower paint, naphthalene compounds and oil-based brighteners are mixed and dispersed, filled, reacted and dried to obtain enamel painting; The reaction is carried out under environmental conditions of temperature 20~50℃, relative humidity 50%~75%, and wind. Based on the mass of the oil-based ice flower paint, the naphthalene compound accounts for 22% to 26% of the mass, and the brightening agent accounts for 4% to 5.5% of the mass.

2. The method for preparing enamel painting as described in claim 1, characterized in that, The naphthalene compounds include at least one of naphthol, methylnaphthylamine, and 1,8-naphthalene anhydride.

3. The method for preparing enamel painting as described in claim 2, characterized in that, The naphthol includes α-naphthol.

4. The method for preparing enamel painting as described in claim 1, characterized in that, The oil-based brightening agent is an acrylic brightening agent.

5. The method for preparing enamel painting as described in claim 1, characterized in that, The oil-based ice flower paint contains the following components in weight percentage: 20%~30% polyamine resin, 30%~45% cyclohexanone, 8%~15% 4-methyl-2-pentanone, and 25%~40% mineral glaze; wherein the mineral glaze contains the following components in weight percentage: 38%~45% quartz powder, 20%~25% alumina, 7%~13% zinc oxide, and 20%~30% glass powder.

6. The method for preparing enamel painting as described in claim 1, characterized in that, During the reaction, a fan is used to generate airflow, and the fan blades rotate at a speed of 150~600 revolutions per minute.

7. The method for preparing enamel painting as described in claim 1, characterized in that, At least one of the following conditions must be met: A1. The material of the substrate includes at least one of glass, stainless steel, copper, ceramic, and rock materials; A2. The substrate is plate-shaped; A3. During the mixing and dispersion process of oil-based ice flower paint, naphthalene compounds and oil-based brightener, mineral pigments and solvents are also introduced for mixing and dispersion. Based on the mass of the oil-based ice flower paint, the mass of mineral pigments is 0-1% and the mass of solvents is 0-15%.

8. The method for preparing enamel painting as described in claim 1, characterized in that, The steps for cloisonné wire are as follows: Component A and Component B in epoxy resin AB type adhesive are mixed and dispersed at a mass ratio of (1.8~2.5):

1. Pigment and additives are added and dispersed to obtain cloisonné material with filamentous texture. The additive is a defoamer, and the mass of the additive is 0.4%~0.5% of the mass of epoxy resin AB type adhesive. The cloisonné material is used to cloisonné on the substrate and then cured.

9. The method for preparing enamel painting as described in claim 8, characterized in that, At least one of the following conditions must be met: B1. The colorant is a color powder, and / or a color paste and talc, wherein the mass ratio of color paste to talc is (0.3~0.5):1; B2. The mass of the colorant is 40% to 60% of the mass of the epoxy resin AB type adhesive; B2. The curing temperature is 120~140℃.

10. An enamel painting prepared by the preparation method according to any one of claims 1 to 9.

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