Pigment for lacquer painting as well as preparation method and application of pigment

Abstract

The invention relates to the technical field of lacquer painting manufacturing, and provides a lacquer painting pigment and a preparation method and application thereof.The lacquer painting pigment comprises a component A and a component B, and the mass ratio of the component A to the component B is (100-1000): (1-10); the component A comprises toner, water-based resin, a first auxiliary agent and water, and the mass ratio of the toner to the water-based resin to the first auxiliary agent to the water is (10-30): (20-50): (0.7-6): (30-60); or the component A comprises the toner, the oleoresin, the organic solvent and the second auxiliary agent, and the mass ratio of the toner to the oleoresin to the organic solvent to the second auxiliary agent is (15-40): (30-60): (20-40): (0.6-4); the component B comprises a silicon-oxygen bond, an organic group and an end-capping group, and the mass ratio of the silicon-oxygen bond to the organic group to the end-capping group is (30-45): (50-70): (0-1). By optimizing the material formula, the durability of the paint surface is effectively improved, so that the lacquer painting can keep bright color and complete paint film for a long time in an outdoor environment.

Description

Technical Field

[0001] The invention relates to the technical field of lacquer painting production, and in particular to a pigment for lacquer painting, a preparation method and application thereof. Background Art

[0002] As one of the traditional Chinese art forms, lacquer painting has developed over thousands of years and has formed unique artistic value. However, traditional lacquer painting has certain problems in materials, craftsmanship and production efficiency, which restricts its development and promotion.

[0003] Traditional lacquer paintings usually use natural lacquer as a painting material, which has poor durability and is prone to fading, cracking or deformation under the long-term effects of environmental factors such as ultraviolet rays, temperature and humidity. For example, some components in natural lacquer will undergo photochemical reactions with ultraviolet rays, causing color changes; or when the humidity fluctuates greatly, the paint film is prone to stress changes due to moisture absorption and water loss, causing cracking, affecting the long-term preservation and aesthetics of the lacquer painting. In addition, the paint film of traditional lacquer paintings relies on natural drying, which is slow and greatly affected by environmental temperature and humidity, limiting production efficiency; and the pigments are mostly natural pigments, which have limited sources and poor stability, affecting the color vividness and durability of lacquer paintings.

[0004] In addition, the traditional lacquer painting process is complicated and lacks the possibility of standardized production, which restricts the large-scale promotion and popularization of lacquer painting. Summary of the invention

[0005] One of the purposes of the present invention is to provide a pigment for lacquer painting, aiming to improve the problem of poor durability of existing lacquer painting pigments.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A pigment for lacquer painting, comprising component A and component B, wherein the mass ratio of component A to component B is (100-1000):(1-10);

[0008] The component A comprises toner, water-based resin, a first auxiliary agent and water, wherein the mass ratio of the toner, the water-based resin, the first auxiliary agent and the water is (10-30): (20-50): (0.7-6): (30-60);

[0009] Or, the component A comprises toner, oleoresin, organic solvent and a second auxiliary agent, and the mass ratio of the toner, oleoresin, organic solvent and the second auxiliary agent is (15-40): (30-60): (20-40): (0.6-4);

[0010] The component B includes a silicon-oxygen bond, an organic group and a capping group, and the mass ratio of the silicon-oxygen bond, the organic group and the capping group is (30-45): (50-70): (0-1).

[0011] Preferably, the water-based resin is an acrylic resin emulsion;

[0012] The first auxiliary agent includes a dispersant, a thickener and a defoamer, and the mass ratio of the dispersant, the thickener and the defoamer is (0.5-3): (0.1-2): (0.1-1).

[0013] Preferably, the oily resin comprises an alkyd resin and a nitro resin, and the mass ratio of the alkyd resin to the nitro resin is (3-4.5):(5-6);

[0014] The organic solvent comprises turpentine and xylene, and the mass ratio of the turpentine to the xylene is (2-3): (3-4);

[0015] The second auxiliary agent includes a drying agent and a leveling agent, and the mass ratio of the drying agent to the leveling agent is (0.5-3): (0.1-1).

[0016] Preferably, the organic group includes a methyl group, a polydimethylsiloxane, a silicon atom, a phenyl group and a hydrogen atom, and the mass ratio of the methyl group, the polydimethylsiloxane, the silicon atom, the phenyl group and the hydrogen atom is (3.5-4): (34-210): 1: (18-20): (10.8-12.1);

[0017] The end-capping groups include hydroxyl, alkoxy and vinyl, and the mass ratio of the hydroxyl, alkoxy and vinyl is (0.52-0.59): (0.9-1.1): (0.8-1).

[0018] Preferably, the color powder is one or more of red powder, yellow powder, blue powder, black powder, white powder, green powder and purple powder.

[0019] The second object of the present invention is to provide a method for preparing a pigment for lacquer painting, aiming at preparing a pigment with good durability.

[0020] To achieve the above object, the present invention adopts the following technical solutions:

[0021] A method for preparing the pigment for lacquer painting as described above comprises the following steps:

[0022] (1) preparing component A: mixing a color powder, a water-based resin, a first auxiliary agent and water in a certain proportion by mass, stirring the mixture to obtain a water-based pigment component A; or mixing a color powder, an oily resin, an organic solvent and a second auxiliary agent in a certain proportion by mass, stirring the mixture to obtain an oily pigment component A;

[0023] (2) preparing component B: mixing the silicon-oxygen bond, the organic group and the end-capping group according to a mass ratio to obtain component B;

[0024] (3) Preparing a paint pigment: Add component B to component A according to a mass ratio, mix well, and obtain a paint pigment.

[0025] The third object of the present invention is to provide a method for making a lacquer painting, aiming to improve the problem of complex existing lacquer painting production process.

[0026] To achieve the above object, the present invention adopts the following technical solutions:

[0027] A method for making a lacquer painting comprises the following steps:

[0028] (1) Drawing lacquer painting: using the above-mentioned lacquer painting pigments and painting tools to draw;

[0029] (2) Curing: Place the finished lacquer painting in a ventilated, cool, dry and dust-free space for curing;

[0030] (3) Sealing the glaze: After the glaze is cured, transparent hard glue is attached to the surface of the lacquer painting. After the transparent hard glue is cured, the finished lacquer painting is obtained.

[0031] Preferably, in step (2), the drying condition is that the air humidity is less than 80%, the curing temperature is 20° C.-60° C., and the curing time is 0.5 h-48 h.

[0032] Preferably, in step (3), the transparent hard glue is LC-103A / B epoxy resin, and the mass ratio of the main agent 103A and the curing agent 103B of the LC-103A / B epoxy resin is (1.12-3): (0.37-2.94);

[0033] The curing temperature of the transparent hard glue is 25° C.-60° C., and the curing time is 2h-24h.

[0034] After adopting the above technical solution, the present invention has the following advantages compared with the background technology:

[0035] 1. The present invention effectively improves the durability of the paint surface by optimizing the material formula, so that the lacquer painting can maintain bright colors and intact paint film for a long time in the outdoor environment.

[0036] 2. The production process of the present invention is simple. The pigment prepared by the present invention can be used in conjunction with modern spraying and leveling technology to produce lacquer paintings, and can be used for pattern engraving and polishing with the aid of numerical control equipment, thereby effectively saving steps without affecting the quality of the lacquer paintings and achieving precise and standardized production. DETAILED DESCRIPTION

[0037] For ease of understanding of the present invention, the present invention will be described more fully below. Although the present application provides preferred embodiments of the present invention, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Where specific techniques or conditions are not indicated in the embodiments, the technical conditions described in the documents in this area or the product specifications are carried out.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] In the present invention, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0040] In the present invention, when it comes to numerical ranges, unless otherwise specified, the above numerical ranges are deemed to be continuous and include the minimum and maximum values ​​of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be merged. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0041] Only some numerical ranges are specifically disclosed herein. However, any lower limit can be combined with any upper limit to form an unspecified range; and any lower limit can be combined with other lower limits to form an unspecified range, and likewise any upper limit can be combined with any other upper limit to form an unspecified range. In addition, each separately disclosed point or single value can itself be combined as a lower limit or upper limit with any other point or single value or with other lower limits or upper limits to form an unspecified range.

[0042] The temperature parameters in the present invention, if not specifically limited, allow for both constant temperature treatment and treatment within a certain temperature range. The constant temperature treatment allows the temperature to fluctuate within the precision range controlled by the instrument.

[0043] In the description of the invention, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] If there is no special description, all embodiments and optional embodiments of the present invention can be combined with each other to form a new technical solution. If there is no special description, all technical features and optional technical features of the present invention can be combined with each other to form a new technical solution.

[0045] If not specifically stated, all steps of the present invention may be performed sequentially or randomly, but are preferably performed sequentially.

[0046] The reagents and instruments used without indicating the manufacturer are all conventional products obtained from the market.

[0047] Embodiment 1

[0048] The present embodiment provides a pigment for lacquer painting, including component A and component B, the mass ratio of component A to component B is 100:1; component A includes color powder, water-based resin, a first auxiliary agent and water, the mass ratio of color powder, water-based resin, the first auxiliary agent and water is 10:20:0.7:30; component B includes silicon-oxygen bonds and organic groups, the mass ratio of silicon-oxygen bonds and organic groups is 30:50.

[0049] Among them, the water-based resin is an acrylic resin emulsion; the first auxiliary agent includes a dispersant, a thickener and a defoaming agent, and the mass ratio of the dispersant, the thickener and the defoaming agent is 0.5:0.1:0.1; the organic groups include methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms, and the mass ratio of methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms is 3.5:34:1:18:10.8; the color powder is one or more of red powder, yellow powder, blue powder, black powder, white powder, green powder and purple powder.

[0050] By mixing different types and proportions of toner, different colors can be obtained to meet the needs of artistic creation; acrylic resin emulsion can make the pigment particles bond to form a continuous paint film, and can enhance the durability and flexibility of the paint surface. The preferred acrylic resin emulsion is Seacryl 11K38 water-based acrylic resin emulsion; dispersant can help to disperse solid particles such as toner evenly to prevent pigment agglomeration, and the preferred dispersant is SN-5060 dispersant; thickener is used to adjust viscosity and help pigment suspension to prevent precipitation, and the preferred thickener is ASE-60 thickener; defoamer is used to eliminate bubbles generated by pigments during stirring, coating, etc., making the paint surface smoother and denser, and the preferred defoamer is GL-58 defoamer; siloxane bonds can enhance stability and flexibility; methyl, phenyl and hydrogen atoms can adjust hardness, flexibility, etc.; polydimethylsiloxane can reduce surface tension and improve the scratch resistance, water resistance and anti-fouling properties of the paint.

[0051] Also provided is a method for preparing a pigment for lacquer painting, comprising the following steps:

[0052] (1) preparing component A: mixing the color powder, the water-based resin, the first auxiliary agent and water according to a mass ratio, and stirring them uniformly to obtain a water-based pigment component A;

[0053] (2) preparing component B: mixing silicon-oxygen bonds and organic groups according to a mass ratio to obtain component B;

[0054] (3) Preparing a paint pigment: Add component B to component A according to a mass ratio, mix well, and obtain a paint pigment.

[0055] The water-based pigment prepared as above is environmentally friendly, and the paint film has good flexibility after drying.

[0056] A method for making a lacquer painting is also provided, comprising the following steps:

[0057] (1) Drawing lacquer painting: using the above-mentioned lacquer painting pigments and painting tools to draw;

[0058] (2) Curing: Place the finished lacquer painting in a ventilated, cool, dry and dust-free space for curing;

[0059] (3) Sealing the glaze: After the glaze is cured, transparent hard glue is attached to the surface of the lacquer painting. After the transparent hard glue is cured, the finished lacquer painting is obtained.

[0060] Wherein, in step (2), the drying condition is 75% air humidity, 20°C curing temperature, and 48h curing time. A ventilated, cool, and dry environment is conducive to the development of solvents and the drying of paint films, and avoids moisture affecting the curing effect; a dust-free space prevents dust from contaminating the paint surface and ensures the quality of the paint surface.

[0061] In step (3), the transparent hard glue is LC-103A / B epoxy resin, and the mass ratio of the main agent 103A and the curing agent 103B of the LC-103A / B epoxy resin is 1.12:0.37; the curing temperature of the transparent hard glue is 25°C, and the curing time is 24h.

[0062] Transparent hard glue LC-103A / B epoxy resin can provide good adhesion and hardness to form a transparent paint film. At the same time, its low viscosity property helps to better penetrate and fill in the lacquer painting process, enhance the overall performance of the paint layer, and also help to maintain the transparency of the lacquer painting. After anti-ultraviolet and anti-oxidation treatment, it has excellent yellowing resistance and weather resistance. At the same time, the cured product has high transparency, high gloss, solvent resistance and water resistance, which can protect the paint surface and improve its aesthetics and durability.

[0063] Embodiment 2

[0064] The present embodiment provides a pigment for lacquer painting, including component A and component B, the mass ratio of component A to component B is 400:4; component A includes color powder, water-based resin, a first auxiliary agent and water, the mass ratio of color powder, water-based resin, the first auxiliary agent and water is 30:50:6:60; component B includes silicon-oxygen bonds, organic groups and end-capping groups, the mass ratio of silicon-oxygen bonds, organic groups and end-capping groups is 45:70:1.

[0065] Among them, the water-based resin is an acrylic resin emulsion; the first auxiliary agent includes a dispersant, a thickener and a defoaming agent, and the mass ratio of the dispersant, the thickener and the defoaming agent is 3:2:1; the organic groups include methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms, and the mass ratio of methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms is 3.7:78:1:18.5:11.2; the end-capping groups include hydroxyl, alkoxy and vinyl groups, and the mass ratio of hydroxyl, alkoxy and vinyl groups is 0.52:0.9:0.8; the color powder is one or more of red powder, yellow powder, blue powder, black powder, white powder, green powder and purple powder.

[0066] A method for preparing a pigment for lacquer painting is also provided, wherein in step (2), a silicon-oxygen bond, an organic group and a capping group are mixed in a mass ratio to obtain component B. The rest of the preparation method is the same as that of embodiment 1.

[0067] A method for making a lacquer painting is also provided, wherein in step (2), the drying condition is 60% air humidity, the curing temperature is 40° C., and the curing time is 28 hours; in step (3), the mass ratio of the main agent 103A to the curing agent 103B is 3:2.94; the curing temperature of the transparent hard glue is 60° C., and the curing time is 2 hours. The rest of the production method is the same as that of Example 1.

[0068] Embodiment 3

[0069] The present embodiment provides a pigment for lacquer painting, including component A and component B, the mass ratio of component A to component B is 700:6; component A includes color powder, water-based resin, a first auxiliary agent and water, the mass ratio of color powder, water-based resin, the first auxiliary agent and water is 15:28:2:38; component B includes silicon-oxygen bonds, organic groups and end-capping groups, the mass ratio of silicon-oxygen bonds, organic groups and end-capping groups is 33:55:0.25.

[0070] Among them, the water-based resin is an acrylic resin emulsion; the first auxiliary agent includes a dispersant, a thickener and a defoaming agent, and the mass ratio of the dispersant, the thickener and the defoaming agent is 1.1:0.8:0.3; the organic groups include methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms, and the mass ratio of methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms is 3.8:122:1:19:11.5; the end-capping groups include hydroxyl, alkoxy and vinyl groups, and the mass ratio of hydroxyl, alkoxy and vinyl groups is 0.54:0.95:0.85; the color powder is one or more of red powder, yellow powder, blue powder, black powder, white powder, green powder and purple powder.

[0071] A method for preparing a pigment for lacquer painting is also provided, wherein in step (2), a silicon-oxygen bond, an organic group and a capping group are mixed in a mass ratio to obtain component B. The rest of the preparation method is the same as that of embodiment 1.

[0072] A method for making a lacquer painting is also provided, wherein in step (2), the drying condition is 50% air humidity, the curing temperature is 50° C., and the curing time is 10 hours; in step (3), the mass ratio of the main agent 103A to the curing agent 103B is 1.59:1.1; the curing temperature of the transparent hard glue is 35° C., and the curing time is 15 hours. The rest of the production method is the same as that of Example 1.

[0073] Embodiment 4

[0074] The present embodiment provides a pigment for lacquer painting, including component A and component B, the mass ratio of component A to component B is 1000:10; component A includes color powder, water-based resin, a first auxiliary agent and water, the mass ratio of color powder, water-based resin, the first auxiliary agent and water is 20:36:4:50; component B includes silicon-oxygen bonds, organic groups and end-capping groups, the mass ratio of silicon-oxygen bonds, organic groups and end-capping groups is 36:60:0.5.

[0075] Among them, the water-based resin is an acrylic resin emulsion; the first auxiliary agent includes a dispersant, a thickener and a defoaming agent, and the mass ratio of the dispersant, the thickener and the defoaming agent is 1.8:1.5:0.5; the organic groups include methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms, and the mass ratio of methyl, polydimethylsiloxane, silicon atoms, phenyl groups and hydrogen atoms is 4:210:1:20:12.1; the end-capping groups include hydroxyl, alkoxy and vinyl groups, and the mass ratio of hydroxyl, alkoxy and vinyl groups is 0.59:1.1:1; the color powder is one or more of red powder, yellow powder, blue powder, black powder, white powder, green powder and purple powder.

[0076] A method for preparing a pigment for lacquer painting is also provided, wherein in step (2), a silicon-oxygen bond, an organic group and a capping group are mixed in a mass ratio to obtain component B. The rest of the preparation method is the same as that of embodiment 1.

[0077] A method for making a lacquer painting is also provided, wherein in step (2), the drying condition is 40% air humidity, the curing temperature is 60° C., and the curing time is 0.5 h; in step (3), the mass ratio of the main agent 103A to the curing agent 103B is 2.1:1.7; the curing temperature of the transparent hard glue is 40° C., and the curing time is 8 h. The rest of the production method is the same as that of Example 1.

[0078] Embodiment 5

[0079] This embodiment provides a pigment for lacquer painting, wherein component A includes color powder, oily resin, organic solvent and second auxiliary agent, the mass ratio of color powder, oily resin, organic solvent and second auxiliary agent is 15:30:20:0.6; the oily resin includes alkyd resin and nitro resin, the mass ratio of alkyd resin and nitro resin is 3:5; the organic solvent includes turpentine and xylene, the mass ratio of turpentine and xylene is 2:3; the second auxiliary agent includes drying agent and leveling agent, the mass ratio of drying agent and leveling agent is 0.5:0.1. The rest is the same as the first embodiment.

[0080] Alkyd resin helps to improve the gloss, fullness and adhesion of the paint film, making the paint surface smoother, tougher and having a certain chemical corrosion resistance. The preferred alkyd resin is ALUKIDIR EL-8001 alkyd resin; nitro resin can accelerate the drying speed of the paint surface, form a hard and bright paint film, increase the wear resistance and chemical resistance of the paint surface, and improve the hardness of the paint surface. The preferred nitro resin is zzqttl nitro resin; the drying agent can accelerate the drying process of the paint and shorten the cycle of lacquer painting production. The preferred drying agent is Octa-Soligen 421 drying agent; leveling agent is used to improve the fluidity of the pigment, so that the pigment can be better leveled during the coating process, avoiding surface defects such as orange peel and shrinkage holes, making the paint surface smoother and smoother. The preferred leveling agent is AKN-UV1151 leveling agent; turpentine can adjust the viscosity of the pigment and improve the drying performance of the pigment. The preferred turpentine is Nanjian turpentine; xylene can evenly mix the ingredients and volatilize during the drying process of the pigment to solidify the paint film. The preferred xylene is OT xylene solvent.

[0081] A method for preparing a pigment for lacquer painting is also provided, wherein in step (1), color powder, oily resin, organic solvent and second auxiliary agent are mixed according to mass ratio and stirred evenly to obtain oily pigment component A. The rest of the preparation method is the same as that of embodiment 1. The oily pigment prepared above has a fast drying speed and a hard and wear-resistant paint film.

[0082] A method for making a lacquer painting is also provided, which is the same as that of the first embodiment.

[0083] Embodiment 6

[0084] This embodiment provides a pigment for lacquer painting, wherein component A includes color powder, oily resin, organic solvent and second auxiliary agent, the mass ratio of color powder, oily resin, organic solvent and second auxiliary agent is 40:60:40:4; the oily resin includes alkyd resin and nitro resin, the mass ratio of alkyd resin and nitro resin is 4.5:6; the organic solvent includes turpentine and xylene, the mass ratio of turpentine and xylene is 3:4; the second auxiliary agent includes drying agent and leveling agent, the mass ratio of drying agent and leveling agent is 3:1. The rest is the same as the second embodiment.

[0085] A method for preparing a pigment for lacquer painting is also provided, wherein in step (1), toner, oily resin, organic solvent and second auxiliary agent are mixed according to mass proportion and stirred evenly to obtain oily pigment component A. The rest of the preparation method is the same as that of Example 2.

[0086] A method for making a lacquer painting is also provided, which is the same as that of the second embodiment.

[0087] Embodiment 7

[0088] This embodiment provides a pigment for lacquer painting, wherein component A includes color powder, oily resin, organic solvent and second auxiliary agent, the mass ratio of color powder, oily resin, organic solvent and second auxiliary agent is 20:37:25:1.4; the oily resin includes alkyd resin and nitro resin, the mass ratio of alkyd resin and nitro resin is 3.4:5.2; the organic solvent includes turpentine and xylene, the mass ratio of turpentine and xylene is 2.3:3.2; the second auxiliary agent includes drying agent and leveling agent, the mass ratio of drying agent and leveling agent is 1.2:0.3. The rest is the same as that of embodiment 3.

[0089] A method for preparing a pigment for lacquer painting is also provided, wherein in step (1), toner, oily resin, organic solvent and second auxiliary agent are mixed according to mass proportion and stirred evenly to obtain oily pigment component A. The rest of the preparation method is the same as that of Example 3.

[0090] A method for making a lacquer painting is also provided, which is the same as that of the third embodiment.

[0091] Embodiment 8

[0092] This embodiment provides a pigment for lacquer painting, wherein component A includes color powder, oily resin, organic solvent and second auxiliary agent, the mass ratio of color powder, oily resin, organic solvent and second auxiliary agent is 26:45:30:2.6; the oily resin includes alkyd resin and nitro resin, the mass ratio of alkyd resin and nitro resin is 3.8:5.5; the organic solvent includes turpentine and xylene, the mass ratio of turpentine and xylene is 2.6:3.5; the second auxiliary agent includes drying agent and leveling agent, the mass ratio of drying agent and leveling agent is 2:0.6. The rest is the same as that of embodiment 4.

[0093] A method for preparing a pigment for lacquer painting is also provided, wherein in step (1), toner, oily resin, organic solvent and second auxiliary agent are mixed according to mass proportion and stirred evenly to obtain oily pigment component A. The rest of the preparation method is the same as that of Example 4.

[0094] A method for making a lacquer painting is also provided, which is the same as that of the fourth embodiment.

[0095] Comparative Example

[0096] In this comparative example, component B includes silicon-oxygen bonds and organic groups, and the mass ratio of silicon-oxygen bonds to organic groups is 30:90; and in the preparation step (3), the mass ratio of the main agent 103A of LC-103A / B epoxy resin to the curing agent 103B is 3.5:4. The remaining conditions are the same as those in Example 1.

[0097] Test example

[0098] The lacquer paintings prepared in Examples 1 to 8 and the comparative example were tested for performance, and the testing methods and results of each performance index are as follows:

[0099] Anti-ultraviolet test: Anti-ultraviolet test is carried out according to GB / T 1865-2009 "Plastics UV radiation aging test method".

[0100] Antioxidation test: Antioxidation test is carried out according to GB / T 1735-2009 "Determination of heat resistance of paints and varnishes". This standard specifies the sampling and testing requirements for paints, varnishes and related products, including the test method and judgment criteria for heat resistance, which can reflect the antioxidation performance of the paint surface to a certain extent.

[0101] Rigidity test: Rigidity test is carried out according to GB / T 6739-2022 "Paints and varnishes - pencil method for determination of film hardness".

[0102] High temperature resistance test: High temperature resistance test is carried out according to GB / T 1735-2009 "Determination of heat resistance of paints and varnishes".

[0103] Table 1 Performance test results

[0104]

[0105]

[0106] The test results show that the anti-ultraviolet, anti-oxidation, high temperature resistance and rigidity capabilities of the present invention are significantly improved, the durability is good, the lacquer painting can maintain bright colors for a long time in the outdoor environment, the paint film is intact, and the display life is greatly extended.

[0107] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pigment for lacquer painting, characterized in that: Comprising component A and component B, wherein the mass ratio of component A to component B is (100-1000):(1-10); The component A comprises toner, water-based resin, a first auxiliary agent and water, wherein the mass ratio of the toner, the water-based resin, the first auxiliary agent and the water is (10-30): (20-50): (0.7-6): (30-60); Or, the component A comprises toner, oleoresin, organic solvent and a second auxiliary agent, and the mass ratio of the toner, oleoresin, organic solvent and the second auxiliary agent is (15-40): (30-60): (20-40): (0.6-4); The component B includes a silicon-oxygen bond, an organic group and a capping group, and the mass ratio of the silicon-oxygen bond, the organic group and the capping group is (30-45): (50-70): (0-1).

2. The pigment for lacquer painting according to claim 1, characterized in that: The water-based resin is an acrylic resin emulsion; The first auxiliary agent includes a dispersant, a thickener and a defoamer, and the mass ratio of the dispersant, the thickener and the defoamer is (0.5-3): (0.1-2): (0.1-1).

3. The pigment for lacquer painting according to claim 1, characterized in that: The oily resin comprises an alkyd resin and a nitro resin, and the mass ratio of the alkyd resin to the nitro resin is (3-4.5):(5-6); The organic solvent comprises turpentine and xylene, and the mass ratio of the turpentine to the xylene is (2-3): (3-4); The second auxiliary agent includes a drying agent and a leveling agent, and the mass ratio of the drying agent to the leveling agent is (0.5-3): (0.1-1).

4. The pigment for lacquer painting according to claim 1, characterized in that: The organic group includes a methyl group, a polydimethylsiloxane, a silicon atom, a phenyl group and a hydrogen atom, and the mass ratio of the methyl group, the polydimethylsiloxane, the silicon atom, the phenyl group and the hydrogen atom is (3.5-4): (34-210): 1: (18-20): (10.8-12.1); The end-capping groups include hydroxyl, alkoxy and vinyl, and the mass ratio of the hydroxyl, alkoxy and vinyl is (0.52-0.59): (0.9-1.1): (0.8-1).

5. The pigment for lacquer painting according to claim 1, characterized in that: The color powder is one or more of red powder, yellow powder, blue powder, black powder, white powder, green powder and purple powder.

6. A method for preparing a pigment for lacquer painting according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) preparing component A: mixing a color powder, a water-based resin, a first auxiliary agent and water in a certain proportion by mass, stirring the mixture to obtain a water-based pigment component A; or mixing a color powder, an oily resin, an organic solvent and a second auxiliary agent in a certain proportion by mass, stirring the mixture to obtain an oily pigment component A; (2) preparing component B: mixing the silicon-oxygen bond, the organic group and the end-capping group according to a mass ratio to obtain component B; (3) Preparing a paint pigment: Add component B to component A according to a mass ratio, mix well, and obtain a paint pigment.

7. A method for making a lacquer painting, characterized in that: The following steps are involved: (1) Drawing lacquer paintings: drawing using the lacquer painting pigment as described in any one of claims 1 to 5 in combination with painting tools; (2) Curing: Place the finished lacquer painting in a ventilated, cool, dry and dust-free space for curing; (3) Sealing the glaze: After the glaze is cured, transparent hard glue is attached to the surface of the lacquer painting. After the transparent hard glue is cured, the finished lacquer painting is obtained.

8. The method for making lacquer painting according to claim 7, characterized in that: In step (2), the drying condition is that the air humidity is less than 80%, the curing temperature is 20° C.-60° C., and the curing time is 0.5 h-48 h.

9. The method for making lacquer painting according to claim 7, characterized in that: In step (3), the transparent hard glue is LC-103A / B epoxy resin, and the mass ratio of the main agent 103A and the curing agent 103B of the LC-103A / B epoxy resin is (1.12-3): (0.37-2.94); The curing temperature of the transparent hard glue is 25° C.-60° C., and the curing time is 2h-24h.

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