Waterproof interior painting pigment as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of pigment preparation, and particularly relates to a waterproof interior paint as well as a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing quartz sand, alkali powder, potassium carbonate, zinc oxide, borax, antimony oxide and sodium fluosilicate, grinding and sieving to obtain a basic raw material; grinding and sieving the additive to obtain a coloring agent; uniformly mixing the basic raw material with the coloring agent to obtain the waterproof interior paint; blending the waterproof inner painting pigment with a medium flux to obtain a colored drawing pigment; painting on the surface of the inner painting green body by using a colored painting pigment to obtain a colored painting green body; and drying the colored drawing green body, baking and annealing to obtain an inner painting work. According to an inner painting product drawn by the waterproof inner painting pigment, the color of a picture cannot be affected by factors such as water meeting, liquid containing, damp, corrosion, exposure to the sun or touch, the phenomena of picture fading, contamination, falling and the like can be effectively avoided, and storage and collection of the inner painting product and design, production and popularization of the practical inner painting product are facilitated.

Description

Technical Field

[0001] This invention belongs to the field of pigment preparation technology, specifically relating to a waterproof inner painting pigment, its preparation method, and its application. Background Technology

[0002] Inside painting is a technique using a specially designed, curved brush to paint inside a teapot made of transparent or semi-transparent materials such as glass, crystal, or amber. The inside of the medium has a frosted surface, allowing the paint to adhere naturally. The medium can be round, flat, square, oval, or even conjoined. The painting process typically involves adding solvents and thinners to the various pigments before applying them with a brush. Common painting pigments include traditional Chinese painting pigments, oil paints, acrylic paints, and gouache paints. Solvents and thinners are primarily oil-based solvents such as frankincense oil and camphor oil, as well as water-based solutions such as alcohol and purified water. These solvents and thinners are easy to prepare and use, resulting in inside paintings characterized by delicate composition, vibrant colors, and strong color expression.

[0003] In existing inside-painted works, the pigments naturally adhere to the inner wall of the substrate during the painting process. However, without subsequent treatment after completion, the works may experience fading, soiling, or peeling due to factors such as water ingress, liquid exposure, moisture, corrosion, sun exposure, or handling during use and storage. This affects the visual effect and hinders the collection and preservation of the inside-painted works. Therefore, for practical inside-painted products, a protective layer needs to be added during the design and production process, which significantly increases the difficulty of promoting practical inside-painted works. For collectible inside-painted works, the preservation requirements are even more stringent. For example, when storing inside-painted teapots, contact with water, strong acids and alkalis, and harmful chemicals must be avoided, moisture must be prevented, the painting should be checked regularly, friction should be avoided, and a suitable storage environment should be selected.

[0004] Chinese patent CN103254670A discloses a glass painting pigment, whose components, by weight percentage, include 70-80% silicone-acrylic emulsion, 10-20% water-based pigment, 0.2-0.3% defoamer, 2-5% rheology modifier, 2-5% dispersing and wetting agent, and 0.2-0.4% preservative. The specific manufacturing steps are as follows: water, high-transparency pigment powder, defoamer, and other additives are mixed and ground in a grinder for about one hour. The ground water-based pigment is then transferred to a vacuum disperser, where the silicone-acrylic emulsion and defoamer are added, and the mixture is thoroughly mixed to obtain the pigment. However, this glass painting pigment exhibits poor performance in terms of waterproofing and moisture resistance. Summary of the Invention

[0005] The purpose of this invention is to provide a waterproof inner painting pigment, which ensures that the colors of inner paintings created using this pigment will not be affected by factors such as water ingress, liquid storage, moisture, corrosion, exposure to sunlight, or touch. This invention also provides a method for preparing the waterproof inner painting pigment and its application.

[0006] The waterproof inner painting pigment of the present invention is made from the following raw materials in weight percentage: 30-34% quartz sand, 28-30% alkali powder, 4-6% potassium carbonate, 5-9% zinc oxide, 6-10% borax, 7-9% antimony oxide, 8-10% sodium fluorosilicate and 0.4-0.6% additives.

[0007] The additive is at least one of potassium sulfide, aluminum sulfide, cadmium yellow, mercuric sulfide, cobalt oxide, copper oxide, potassium dichromate, or ferric oxide.

[0008] The method for preparing the waterproof inner painting pigment of the present invention includes the following steps: (1) Quartz sand, alkali powder, potassium carbonate, zinc oxide, borax, antimony oxide and sodium fluorosilicate are uniformly mixed, ground and sieved to obtain the basic raw materials; (2) The additives are ground and sieved to obtain the colorant; (3) The base raw materials and colorants are mixed evenly to obtain waterproof inner painting pigments.

[0009] The sieve used in step (1) has a mesh size of 500.

[0010] In step (2), the sieve mesh size is 500 mesh.

[0011] The application of the waterproof inner painting pigment of the present invention includes the following steps: (a) Waterproof inner painting pigments are mixed with a flux to obtain colored paints; (b) Paint the inner surface of the blank with colored pigments to obtain a painted blank; (c) After the painted blank is dried, it is baked and annealed to obtain the inside painting work.

[0012] In step (a), the mass ratio of waterproof inner painting pigment to flux is 1:3-4, and the flux is linseed oil.

[0013] In step (c), the baking temperature is 500-550℃.

[0014] The baking time in step (c) is 24-36 hours.

[0015] The annealing time in step (c) is 72-120 hours.

[0016] The beneficial effects of this invention are as follows: (1) Quartz sand forms a framework in the form of crystalline particles. Its fine particle size fills the internal pores of the pigment and undergoes a solid-phase reaction with the metal ions released by alkali powder and potassium carbonate to generate a waterproof network framework. The B2O3 generated by the dehydration of borax can act as a flux to form a eutectic system with quartz sand and metal oxides, constructing an elastic Si-OB mixed network. At the same time, zinc oxide and antimony oxide can further reduce the porosity of the Si-OB mixed network by filling micro-defects and adjusting the network structure. Sodium fluorosilicate releases F - It combines with metal ions to form low surface energy fluorides, forming a hydrophobic barrier on the pigment surface. At the same time, the SiO2 generated by the decomposition of sodium fluorosilicate participates in the construction of the waterproof network, further densifying the waterproof structure.

[0017] (2) After baking, the pigment adheres to the surface of the inner painting blank. The potassium carbonate in the pigment will slowly decompose and release trace amounts of gas, which can drive out the residual air and volatile components inside the pigment, reduce the pores formed during the baking process, reduce the porosity of the Si-OB mixed network, promote the densification of the waterproof structure, and thus make the inner painting work have excellent waterproof effect.

[0018] (3) The inner painting works painted with the waterproof inner painting pigment of the present invention will not be affected by factors such as water, liquid, moisture, corrosion, sun exposure or touch, and can effectively avoid the phenomenon of color fading, staining and peeling.

[0019] (4) This invention solves the technical problem of adding a protective layer to practical inner-painted products, creating conditions for the market promotion of practical inner-painted artworks; for collectible works, it avoids losses caused by improper long-term preservation from the source; it is conducive to the preservation and collection of inner-painted products as well as the design, production and promotion of practical inner-painted products. Attached Figure Description

[0020] Figure 1 This is a real-life image of the inside-painted artwork "The Eight Immortals Crossing the Sea".

[0021] Figure 2 for Figure 1 Local magnification Figure 1 .

[0022] Figure 3 for Figure 1 Local magnification Figure 2 .

[0023] Figure 4 This is a photograph of the actual object depicting the inside-painted artwork "I am the peak when I reach the summit of the mountain".

[0024] Figure 5 for Figure 4 Local magnification Figure 1 .

[0025] Figure 6 for Figure 4 Local magnification Figure 2 . Detailed Implementation

[0026] The present invention will be further described below with reference to embodiments. Example 1

[0027] Preparation of waterproof inner painting pigments: (1) 3.25 kg of quartz sand, 3 kg of alkali powder, 0.5 kg of potassium carbonate, 0.7 kg of zinc oxide, 0.8 kg of borax, 0.8 kg of antimony oxide and 0.9 kg of sodium fluorosilicate are mixed evenly and then put into a glaze grinding machine with water for grinding. After drying, the mixture is passed through a 500-mesh sieve to obtain the basic raw materials. (2) 0.05 kg of ferric oxide was ground and passed through a 500-mesh sieve to obtain a colorant; (3) The basic raw materials in step (1) and the colorant in step (2) are mixed evenly to obtain waterproof inner painting pigment; Using the above-mentioned method for preparing waterproof inner painting pigments, at least one of potassium sulfide, aluminum sulfide, cadmium yellow, mercuric sulfide, cobalt oxide, copper oxide, potassium dichromate, or ferric oxide can be selected as an additive to prepare waterproof inner painting pigments of different colors.

[0028] Application of waterproof inner painting pigments: (a) Mix 1 kg of waterproof inner painting pigment with 3 kg of linseed oil evenly to obtain painting pigment; (b) Use an inner painting brush to dip into the painting pigment and paint on the cleaned inner surface of the glass blank to obtain a painted blank; (c) After the painted blank is dried, it is baked in a kiln at 500℃ for 36 hours, and then annealed in an annealing furnace for 72 hours to obtain the inside painting work.

[0029] Waterproof performance test of inside-painted works: The inner-painted artwork was completely immersed in deionized water at a temperature of 100℃ for 120 hours. The color difference value (ΔE) of the inner painting before and after immersion was measured using a colorimeter, and the inner painting was observed with a magnifying glass to see if any cracks appeared. After immersion, no cracks appeared in the inner painting, the color difference value ΔE = 0.3, and there was no obvious color fading. Example 2

[0030] Preparation of waterproof inner painting pigments: (1) 3.16 kg of quartz sand, 2.8 kg of alkali powder, 0.6 kg of potassium carbonate, 0.9 kg of zinc oxide, 1 kg of borax, 0.7 kg of antimony oxide and 0.8 kg of sodium fluorosilicate are mixed evenly and then put into a glaze grinding machine with water for grinding. After drying, the mixture is passed through a 500-mesh sieve to obtain the basic raw materials. (2) 0.04 kg of copper oxide was ground and passed through a 500-mesh sieve to obtain a colorant; (3) The basic raw materials in step (1) and the colorant in step (2) are mixed evenly to obtain waterproof inner painting pigment; Using the above-mentioned method for preparing waterproof inner painting pigments, at least one of potassium sulfide, aluminum sulfide, cadmium yellow, mercuric sulfide, cobalt oxide, copper oxide, potassium dichromate, or ferric oxide can be selected as an additive to prepare waterproof inner painting pigments of different colors.

[0031] Application of waterproof inner painting pigments: (a) Mix 1 kg of waterproof inner painting pigment with 4 kg of linseed oil evenly to obtain painting pigment; (b) Use an inner painting brush to dip into the painting pigment and paint on the cleaned inner surface of the glass blank to obtain a painted blank; (c) After the painted blank is dried, it is baked in a kiln at 550℃ for 24 hours, and then annealed in an annealing furnace for 120 hours to obtain the inside painting work.

[0032] Waterproof performance test of inside-painted works: The operation method is the same as in Example 1. After soaking, no cracks appeared in the inner painting, the color difference value of the inner painting ΔE=0.25, and there was no obvious color fading. Example 3

[0033] Preparation of waterproof inner painting pigments: (1) 3kg of quartz sand, 2.9kg of alkali powder, 0.4kg of potassium carbonate, 0.9kg of zinc oxide, 1kg of borax, 0.74kg of antimony oxide and 1kg of sodium fluorosilicate are mixed evenly and then put into a glaze grinding machine with water and ground. After drying, they are passed through a 500-mesh sieve to obtain the basic raw materials. (2) 0.06 kg of potassium dichromate was ground and passed through a 500-mesh sieve to obtain a colorant; (3) The basic raw materials in step (1) and the colorant in step (2) are mixed evenly to obtain waterproof inner painting pigment; Using the above-mentioned method for preparing waterproof inner painting pigments, at least one of potassium sulfide, aluminum sulfide, cadmium yellow, mercuric sulfide, cobalt oxide, copper oxide, potassium dichromate, or ferric oxide can be selected as an additive to prepare waterproof inner painting pigments of different colors.

[0034] Application of waterproof inner painting pigments: (a) 1 kg of waterproof inner painting pigment is mixed evenly with 3.5 kg of linseed oil to obtain painting pigment; (b) Use an inner painting brush to dip into the painting pigment and paint on the cleaned inner surface of the glass blank to obtain a painted blank; (c) After the painted blank is dried, it is baked in a kiln at 520℃ for 30 hours, and then annealed in an annealing furnace for 100 hours to obtain the inside painting work.

[0035] Waterproof performance test of inside-painted works: The operation method is the same as in Example 1. After soaking, no cracks appeared in the inner painting, the color difference value of the inner painting ΔE=0.28, and there was no obvious color fading. Example 4

[0036] Preparation of waterproof inner painting pigments: (1) 3.4 kg of quartz sand, 2.95 kg of alkali powder, 0.6 kg of potassium carbonate, 0.5 kg of zinc oxide, 0.6 kg of borax, 0.9 kg of antimony oxide and 1 kg of sodium fluorosilicate are mixed evenly and then put into a glaze grinding machine with water and ground. After drying, they are passed through a 500-mesh sieve to obtain the basic raw materials. (2) 0.05 kg of ferric oxide was ground and passed through a 500-mesh sieve to obtain a colorant; (3) The basic raw materials in step (1) and the coloring agent in step (2) are mixed evenly to obtain the inner painting pigment; Using the above-mentioned method for preparing waterproof inner painting pigments, at least one of potassium sulfide, aluminum sulfide, cadmium yellow, mercuric sulfide, cobalt oxide, copper oxide, potassium dichromate, or ferric oxide can be selected as an additive to prepare waterproof inner painting pigments of different colors.

[0037] Application of waterproof inner painting pigments: (a) Mix 1 kg of waterproof inner painting pigment with 3 kg of linseed oil evenly to obtain painting pigment; (b) Use an inner painting brush to dip into the painting pigment and paint on the cleaned inner surface of the glass blank to obtain a painted blank; (c) After the painted blank is dried, it is baked in a kiln at 500℃ for 36 hours, and then annealed in an annealing furnace for 120 hours to obtain the inside painting work.

[0038] Waterproof performance test of inside-painted works: The operation method is the same as in Example 1. After soaking, no cracks appeared in the inner painting, the color difference value of the inner painting ΔE=0.35, and there was no obvious color fading.

[0039] Comparative Example 1 In Example 1, potassium carbonate was replaced with an equal mass of quartz sand, and the other steps were the same as in Example 1. The waterproof performance of the inner-painted artwork was tested. After soaking, slight cracks appeared in the inner painting, and the color difference value ΔE=0.7, indicating color fading.

[0040] Comparative Example 2 In Example 1, the borax was replaced with an equal mass of quartz sand, and the other steps were the same as in Example 1. The waterproof performance of the inner-painted artwork was tested. After soaking, slight cracks appeared in the inner painting, and the color difference value ΔE=0.8, indicating color fading.

[0041] The inner-painted works "Eight Immortals Crossing the Sea" and "I Am the Peak When I Reach the Summit" were produced using the method of this invention. A physical image and a magnified partial view of the inner-painted work "Eight Immortals Crossing the Sea" are shown below. Figure 1-3 See the actual image and enlarged detail of the inside-painted artwork "I am the Peak at the Summit of the Mountain". Figure 4-6 .

Claims

1. A waterproof inner-painting pigment, characterized in that... It is made from the following raw materials in weight percentage: 30-34% quartz sand, 28-30% alkali powder, 4-6% potassium carbonate, 5-9% zinc oxide, 6-10% borax, 7-9% antimony oxide, 8-10% sodium fluorosilicate and 0.4-0.6% additives.

2. The waterproof inner painting pigment according to claim 1, characterized in that... The additive is at least one of potassium sulfide, aluminum sulfide, cadmium yellow, mercuric sulfide, cobalt oxide, copper oxide, potassium dichromate, or ferric oxide.

3. A method for preparing a waterproof inner painting pigment as described in claim 1 or 2, characterized in that... Includes the following steps: (1) Quartz sand, alkali powder, potassium carbonate, zinc oxide, borax, antimony oxide and sodium fluorosilicate are uniformly mixed, ground and sieved to obtain the basic raw materials; (2) The additives are ground and sieved to obtain the colorant; (3) The base materials and colorants are mixed evenly to obtain waterproof inner painting pigments.

4. The method for preparing waterproof inner painting pigment according to claim 3, characterized in that... In step (1), the sieve mesh size is 500 mesh.

5. The method for preparing waterproof inner painting pigment according to claim 3, characterized in that... In step (2), the sieve mesh size is 500 mesh.

6. The application of a waterproof inner painting pigment as described in claim 1 or 2, characterized in that... Includes the following steps: (a) Waterproof inner painting pigments are mixed with a flux to obtain colored paints; (b) Paint the inner surface of the blank with colored pigments to obtain a painted blank; (c) After the painted blank is dried, it is baked and annealed to obtain the inside painting work.

7. The application of the waterproof inner painting pigment according to claim 6, characterized in that... In step (a), the mass ratio of waterproof inner painting pigment to flux is 1:3-4, and the flux is linseed oil.

8. The application of the waterproof inner painting pigment according to claim 6, characterized in that... In step (c), the baking temperature is 500-550℃.

9. The application of the waterproof inner painting pigment according to claim 6, characterized in that... The baking time in step (c) is 24-36 hours.

10. The application of the waterproof inner painting pigment according to claim 6, characterized in that... The annealing time in step (c) is 72-120 hours.

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