Oil paint and preparation method thereof

Abstract

The invention relates to the technical field of oil paints, in particular to an oil paint and a preparation method thereof. The oil paint is prepared from the following raw materials in parts by weight: 60-80 parts of oil, 40-50 parts of toner, 20-30 parts of filler, 20-30 parts of palm wax, 5-7 parts of stearic acid, 5-7 parts of dammar resin, 4-6 parts of polyamide resin and 2-4 parts of lubricating oil. According to the invention, after the ox horn powder is subjected to enzymolysis treatment, residual animal fat in the ox horn powder is hydrolyzed into glycerol and free fatty acid by lipase, so that the grease content of the ox horn powder is reduced, meanwhile, the compact structure of keratin can be destroyed, the porosity and specific surface area of the ox horn powder are increased, and the binding capacity of the ox horn powder with other components is improved; and toner particles can be fixed through Van der Waals' force, and dissociation and migration of the toner in a pigment coating are reduced, so that the toner is firmly anchored in a filler network and is not easy to fall off even if the toner is rubbed by external force, and the color fastness of the oil paint is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil paints, in particular to an oil paint and a preparation method thereof. Background Art

[0002] Oil paint is a painting medium made by mixing color powder and vegetable oil. It can present a variety of tones through blending. As the core material for oil painting creation, its characteristics provide artists with space to freely express light and shadow, texture and emotion. It remains a classic choice in the field of painting.

[0003] In the prior art, the traditional ingredient structure of oil paint is not stable enough. After the oil paint is applied to form a coating, its adhesion is not strong enough and it is prone to discoloration, which affects the performance of the oil paint. Based on this, the present invention provides an oil paint and a preparation method thereof. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil painting pigment and a preparation method thereof. The oil painting pigment prepared by the present invention not only has good color fastness performance, but also has excellent color retention, thereby effectively improving the performance of the oil painting pigment.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides an oil painting pigment comprising the following raw materials in parts by weight: 60 to 80 parts of oil, 40 to 50 parts of color powder, 20 to 30 parts of filler, 20 to 30 parts of palm wax, 5 to 7 parts of stearic acid, 5 to 7 parts of dammar resin, 4 to 6 parts of polyamide resin, and 2 to 4 parts of lubricating oil;

[0007] The filler is prepared by the following method:

[0008] S1: preparing a base material, wherein the raw materials of the base material include ox horn powder, ox hoof nail, nano-silica, and zirconium phosphate. The ox horn powder and ox hoof nail are pretreated before preparing the base material, and the mass ratio of the raw materials is 4: (0.2-0.4): (0.1-0.3): (0.1-0.3);

[0009] S2: Preparation of rubber compound, the raw materials of the rubber compound include hide glue, epoxidized soybean oil, and shellac resin, the mass ratio of each raw material is 1: (2-4): 1, and the mass of the rubber compound is 30-40% of the mass of the base material;

[0010] S3: Filler preparation: base material and rubber material are mixed and prepared to obtain filler.

[0011] Furthermore, the pretreatment method of the ox horn powder and ox hoof nail is as follows: the ox horn powder is selected to have a particle size of 10 to 20 μm, the ox hoof nail is finely ground to a particle size of 40 to 60 μm, the ox horn powder, the ground ox hoof nail and the treatment liquid are added to a mixer, the mixer is set at 200 to 400 r / min and stirred for 10 to 20 minutes, the resulting product is allowed to stand at 30 to 36°C for 10 to 20 hours, and then sterilized at 80 to 90°C for 20 to 30 minutes, the resulting product is added to a centrifuge, and the centrifuge is set at 4000 to 6000 r / min for centrifugation 6 to 10 minutes, obtain a precipitate from the product obtained by centrifugation, rinse the precipitate with deionized water, and then send it to an oven, set the oven to 50 to 60 ° C for drying for 4 to 6 hours. After the drying is completed, the obtained product is sieved, and the particles with smaller particle size are the pretreated ox horn powder. After the particles with larger particle size are sieved out, they are sent to a carbonization furnace. Under nitrogen protection, the heating rate is set to 4 to 6 ° C / min, and the temperature is raised to 300 to 340 ° C. and kept warm for 40 to 60 minutes. The obtained product is ground and the grinding particle size is 10 to 20 μm to complete the pretreatment of the ox hoof.

[0012] Furthermore, the mass of the treatment liquid is 3 to 5 times the mass of the horn powder.

[0013] Furthermore, the treatment liquid is prepared by the following method: polyphenol oxidase, lipase, protease and deionized water are added to a mixer, and the mixer is set at 300-400 r / min and stirred for 20-30 minutes to prepare the treatment liquid.

[0014] Furthermore, the mass ratio of polyphenol oxidase, lipase, protease and deionized water is 1:(0.4-0.6):(1-2):(200-300).

[0015] Furthermore, the method for preparing the rubber compound is as follows: hide glue, epoxy soybean oil, and shellac resin are added to a water bath, the water bath is heated to 50-70°C, and the water bath is connected to a magnetic stirrer, the speed of the magnetic stirrer is set to 200-300 r / min, and constant temperature stirring is performed for 20-30 minutes to obtain the rubber compound.

[0016] Furthermore, the method for preparing the filler is as follows: a base material and a rubber material are added to a water bath, the water bath is heated to 50-70° C., potassium sorbate is added to the water bath, and a magnetic stirrer is connected at the same time, the speed of the magnetic stirrer is set to 400-500 r / min, and constant temperature stirring is performed for 40-50 minutes to obtain the filler, wherein the mass of potassium sorbate is 0.08-0.12% of the mass of the base material.

[0017] Furthermore, the oil is a mixture of linseed oil, glycerol and tocopherol, and the mass ratio of the linseed oil, glycerol and tocopherol is 10: (0.8-1.2): (0.02-0.04).

[0018] Furthermore, the lubricating oil is liquid paraffin.

[0019] In a second aspect, the present invention further provides a method for preparing an oil paint, comprising the following steps:

[0020] S1: Weigh oil, color powder and filler as needed and add them into a mixer. Set the mixer to 200-300 r / min and stir for 20-30 minutes to prepare a mixture.

[0021] S2: Add the mixture into a reactor, weigh palm wax, stearic acid, dammar resin, polyamide resin, and lubricating oil as needed, heat the reactor to 60-70°C, stir at 300-500 r / min, and stir at a constant temperature for 30-40 minutes to obtain oil paint.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, in the preparation of oil paint, by adding a filler, the filler utilizes ox horn powder and ox hoof nail as the main base material, and after the ox horn powder is subjected to enzymatic hydrolysis, the animal fat remaining in the ox horn powder is hydrolyzed by lipase into glycerol and free fatty acids, thereby reducing its oil content and simultaneously destroying the dense structure of keratin, increasing the porosity and specific surface area of ​​the ox horn powder, and improving the binding ability of the ox horn powder with other ingredients. In addition, the toner particles can be fixed by van der Waals force, reducing the freedom and migration of the toner in the pigment coating, so that the toner is firmly anchored in the filler network and is not easy to fall off even if subjected to external friction, thereby effectively improving the color fastness of the oil paint.

[0024] 2. In the present invention, by pre-treating the ox hoof nail, a porous carbon structure can be generated after high-temperature treatment, which has a good adsorption capacity for color powder. Nano-silica and zirconium phosphate, as inorganic fillers, can provide a rigid skeleton support in the pigment system and inhibit the state change of the pigment. At the same time, the layered structure of zirconium phosphate can absorb ultraviolet rays and slow down the fading of oil paints due to photooxidation, thereby improving the weather resistance of the oil paints.

[0025] 3. In the present invention, by setting the step of pre-treating the ox horn powder and the ox hoof together, when the immersion treatment in the treatment liquid is carried out, since the ox hoof needs to be treated separately later, the ox horn powder and the ox hoof are divided into two particle sizes during the immersion. After the immersion is completed, a simple screening step is performed to separate the ox horn powder and the ox hoof and treat them separately. This can simplify the preparation steps of the oil painting pigment and reduce the preparation cost of the oil painting pigment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The invention provides a flow chart of an oil painting pigment and a preparation method thereof. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that the raw materials used in the following examples are all commercially available raw materials.

[0029] Example 1:

[0030] The invention comprises the following raw materials in parts by weight: 60 parts of oil, 40 parts of color powder, 20 parts of filler, 20 parts of palm wax, 5 parts of stearic acid, 5 parts of dammar resin, 4 parts of polyamide resin, and 2 parts of lubricating oil;

[0031] The filler is prepared by the following method:

[0032] S1: base material preparation, the raw materials of the base material include ox horn powder, ox hoof nail, nano-silica, and zirconium phosphate. The ox horn powder and ox hoof nail are pretreated before the base material is prepared, and the mass ratio of the raw materials is 4: (0.2): (0.1): (0.1);

[0033] S2: Preparation of rubber compound, the raw materials of the rubber compound include hide glue, epoxidized soybean oil, and shellac resin, the mass ratio of each raw material is 1:(2):1, and the mass of the rubber compound is 30% of the mass of the base material;

[0034] S3: Filler preparation: base material and rubber material are mixed and prepared to obtain filler.

[0035] The pretreatment method of ox horn powder and ox hoof nail is as follows: the ox horn powder is selected to have a particle size of 10 μm, the ox hoof nail is finely ground to a particle size of 40 μm, the ox horn powder, the ground ox hoof nail and the treatment liquid are added to a mixer, the mixer is set at 200 r / min and stirred for 10 minutes, the resulting product is allowed to stand at 30°C for 10 hours, and then sterilized at 80°C for 20 minutes, the resulting product is added to a centrifuge, the centrifuge is set at 4000 r / min and centrifuged for 6 minutes, and the resulting product is centrifuged. A precipitate is obtained from the product, which is rinsed with deionized water and then placed in an oven set at 50°C for drying for 4 hours. After the drying is completed, the product is sieved, and the particles with smaller particle sizes are the pretreated ox horn powder. The particles with larger particle sizes are sieved out and placed in a carbonization furnace. Under nitrogen protection, the heating rate is set at 4°C / min, the temperature is raised to 300°C, and the temperature is kept at this temperature for 40 minutes. The product is ground to a particle size of 10 μm, completing the pretreatment of the ox hoof.

[0036] The mass of the treatment liquid is 3 times the mass of the horn powder.

[0037] The treatment liquid is prepared by the following method: polyphenol oxidase, lipase, protease and deionized water are added into a mixer, and the mixer is set at 300 r / min and stirred for 20 minutes to prepare the treatment liquid.

[0038] The mass ratio of polyphenol oxidase, lipase, protease and deionized water is 1:(0.4):(1):(200).

[0039] The method for preparing the glue is as follows: hide glue, epoxy soybean oil, and shellac resin are added to a water bath, the water bath is heated to 50°C, and the water bath is connected to a magnetic stirrer, the speed of the magnetic stirrer is set to 200r / min, and constant temperature stirring is carried out for 20 minutes to obtain the glue.

[0040] The filler preparation method is as follows: a base material and a rubber material are added to a water bath, the water bath is heated to 50° C., potassium sorbate is added to the water bath, and a magnetic stirrer is connected at the same time. The magnetic stirrer is set to a speed of 400 r / min, and constant temperature stirring is performed for 40 minutes to obtain the filler, wherein the mass of potassium sorbate is 0.08% of the mass of the base material.

[0041] The oil material is a mixture of linseed oil, glycerol and tocopherol, and the mass ratio of linseed oil, glycerol and tocopherol is 10: (0.8): (0.02).

[0042] Liquid paraffin is used as lubricant.

[0043] The preparation method of oil paint comprises the following steps:

[0044] S1: Weigh oil, color powder and filler as needed and add them into a mixer. Set the mixer to 200 r / min and stir for 20 minutes to prepare a mixture;

[0045] S2: The mixture is added into a reactor, and palm wax, stearic acid, dammar resin, polyamide resin and lubricating oil are weighed and added into the reactor as needed. The reactor is set to be heated to 60° C., with a stirring speed of 300 r / min, and stirred at a constant temperature for 30 minutes to obtain oil painting pigment.

[0046] Example 2:

[0047] The invention comprises the following raw materials in parts by weight: 70 parts of oil, 45 parts of color powder, 25 parts of filler, 25 parts of palm wax, 6 parts of stearic acid, 6 parts of dammar resin, 5 parts of polyamide resin, and 3 parts of lubricating oil;

[0048] The filler is prepared by the following method:

[0049] S1: base material preparation, the raw materials of the base material include ox horn powder, ox hoof nail, nano-silica, and zirconium phosphate. The ox horn powder and ox hoof nail are pretreated before the base material is prepared, and the mass ratio of the raw materials is 4: (0.3): (0.2): (0.2);

[0050] S2: Preparation of rubber compound, the raw materials of the rubber compound include hide glue, epoxidized soybean oil, and shellac resin, the mass ratio of each raw material is 1:(3):1, and the mass of the rubber compound is 35% of the mass of the base material;

[0051] S3: Filler preparation: base material and rubber material are mixed and prepared to obtain filler.

[0052] The pretreatment method of ox horn powder and ox hoof nail is as follows: the ox horn powder is selected to have a particle size of 15 μm, the ox hoof nail is finely ground to a particle size of 50 μm, the ox horn powder, the ground ox hoof nail and the treatment liquid are added to a mixer, the mixer is set at 300 r / min and stirred for 15 minutes, the resulting product is allowed to stand at 33°C for 15 hours, and then sterilized at 85°C for 25 minutes, the resulting product is added to a centrifuge, the centrifuge is set at 5000 r / min and centrifuged for 8 minutes, and the resulting product is centrifuged. A precipitate is obtained from the product, which is rinsed with deionized water and then placed in an oven set at 55°C for drying for 5 hours. After the drying is completed, the product is sieved, and the particles with smaller particle sizes are the pretreated ox horn powder. The particles with larger particle sizes are sieved out and placed in a carbonization furnace. Under nitrogen protection, the heating rate is set at 5°C / min, and the temperature is raised to 320°C and kept warm for 50 minutes. The product is ground to a particle size of 15 μm, completing the pretreatment of the ox hoof.

[0053] The mass of the treatment liquid is 4 times the mass of the horn powder.

[0054] The treatment liquid is prepared by the following method: polyphenol oxidase, lipase, protease and deionized water are added into a mixer, and the mixer is set at 350 r / min and stirred for 25 minutes to prepare the treatment liquid.

[0055] The mass ratio of polyphenol oxidase, lipase, protease and deionized water is 1:(0.5):(1.5):(250).

[0056] The method for preparing the glue is as follows: hide glue, epoxy soybean oil, and shellac resin are added to a water bath, the water bath is heated to 60°C, and the water bath is connected to a magnetic stirrer, the speed of the magnetic stirrer is set to 250r / min, and the glue is prepared by constant temperature stirring for 25 minutes.

[0057] The method for preparing the filler is as follows: a base material and a rubber material are added to a water bath, the water bath is heated to 60° C., potassium sorbate is added to the water bath, and a magnetic stirrer is connected at the same time. The speed of the magnetic stirrer is set to 450 r / min, and constant temperature stirring is performed for 45 minutes to obtain the filler, wherein the mass of the potassium sorbate is 0.1% of the mass of the base material.

[0058] The oil material is a mixture of linseed oil, glycerol and tocopherol, and the mass ratio of linseed oil, glycerol and tocopherol is 10:(1):(0.03).

[0059] Liquid paraffin is used as lubricant.

[0060] The preparation method of oil paint comprises the following steps:

[0061] S1: Weigh oil, color powder and filler as needed and add them into a mixer. Set the mixer to 200-300 r / min and stir for 20-30 minutes to prepare a mixture.

[0062] S2: Add the mixture into a reactor, weigh palm wax, stearic acid, dammar resin, polyamide resin, and lubricating oil as needed, and add them into the reactor. Set the temperature of the reactor to 65° C., stir at a speed of 400 r / min, and stir at a constant temperature for 30 to 40 minutes to prepare the oil painting pigment.

[0063] Example 3:

[0064] The invention comprises the following raw materials in parts by weight: 80 parts of oil, 50 parts of color powder, 30 parts of filler, 30 parts of palm wax, 7 parts of stearic acid, 7 parts of dammar resin, 6 parts of polyamide resin, and 4 parts of lubricating oil;

[0065] The filler is prepared by the following method:

[0066] S1: base material preparation, the raw materials of the base material include ox horn powder, ox hoof nail, nano-silica, and zirconium phosphate. The ox horn powder and ox hoof nail are pretreated before the base material is prepared, and the mass ratio of the raw materials is 4: (0.4): (0.3): (0.3);

[0067] S2: Preparation of rubber compound, the raw materials of the rubber compound include hide glue, epoxidized soybean oil, and shellac resin, the mass ratio of each raw material is 1:(4):1, and the mass of the rubber compound is 40% of the mass of the base material;

[0068] S3: Filler preparation: base material and rubber material are mixed and prepared to obtain filler.

[0069] The pretreatment method of ox horn powder and ox hoof nail is as follows: the ox horn powder is selected to have a particle size of 20 μm, the ox hoof nail is finely ground to a particle size of 60 μm, the ox horn powder, the ground ox hoof nail and the treatment liquid are added to a mixer, the mixer is set at 400 r / min and stirred for 20 minutes, the resulting product is allowed to stand at 36°C for 20 hours, and then sterilized at 90°C for 30 minutes, the resulting product is added to a centrifuge, the centrifuge is set at 6000 r / min and centrifuged for 10 minutes, and the resulting product is centrifuged. A precipitate is obtained from the product, which is rinsed with deionized water and then placed in an oven set at 60°C for drying for 6 hours. After the drying is completed, the product is sieved, and the particles with smaller particle sizes are the pretreated ox horn powder. The particles with larger particle sizes are sieved out and placed in a carbonization furnace. Under nitrogen protection, the heating rate is set at 6°C / min, and the temperature is raised to 340°C and kept warm for 60 minutes. The product is ground to a particle size of 20 μm, completing the pretreatment of the ox hoof.

[0070] The mass of the treatment liquid is 5 times the mass of the horn powder.

[0071] The treatment liquid is prepared by the following method: polyphenol oxidase, lipase, protease and deionized water are added into a mixer, and the mixer is set at 400 r / min and stirred for 30 minutes to prepare the treatment liquid.

[0072] The mass ratio of polyphenol oxidase, lipase, protease and deionized water is 1:(0.6):(2):(300).

[0073] The method for preparing the glue is as follows: hide glue, epoxy soybean oil, and shellac resin are added to a water bath, the water bath is heated to 70°C, and the water bath is connected to a magnetic stirrer, the speed of the magnetic stirrer is set to 300r / min, and constant temperature stirring is carried out for 30 minutes to obtain the glue.

[0074] The filler preparation method is as follows: a base material and a rubber material are added to a water bath, the water bath is heated to 70° C., potassium sorbate is added to the water bath, and a magnetic stirrer is connected at the same time. The magnetic stirrer is set to a speed of 500 r / min, and constant temperature stirring is performed for 50 minutes to obtain the filler, wherein the mass of potassium sorbate is 0.12% of the mass of the base material.

[0075] The oil material is a mixture of linseed oil, glycerol and tocopherol, and the mass ratio of linseed oil, glycerol and tocopherol is 10:(1.2):(0.04).

[0076] Liquid paraffin is used as lubricant.

[0077] The preparation method of oil paint comprises the following steps:

[0078] S1: Weigh oil, color powder and filler as needed and add them into a mixer. Set the mixer to 200-300 r / min and stir for 30 minutes to obtain a mixture;

[0079] S2: The mixture is added into a reactor, and palm wax, stearic acid, dammar resin, polyamide resin and lubricating oil are weighed and added into the reactor as needed. The reactor is set to be heated to 70° C., with a stirring speed of 500 r / min, and stirred at a constant temperature for 40 minutes to obtain oil painting pigment.

[0080] Comparative Example 1: The difference between this comparative example and Example 1 is that this comparative example does not contain nano-silicon dioxide and zirconium phosphate.

[0081] Comparative Example 2: This comparative example differs from Example 1 in that: in this comparative example, the ox horn powder and ox hoof nail are not pretreated, and the ox hoof nail is in powder form.

[0082] Comparative Example 3: The difference between this comparative example and Example 1 is that in this comparative example, an equal amount of horn powder is used to replace the filler.

[0083] Comparative Example 4: This comparative example is different from Example 1 in that: this comparative example does not contain filler.

[0084] Performance test: The performance test was carried out on the oil paints prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4, and the test data obtained are recorded in the following table:

[0085]

[0086] In the performance test, the color fastness test method adopts the test method in ISO105-X12:2016;

[0087] The color retention test method is as follows: the oil paints prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4 are respectively applied at a fixed thickness and a fixed area, and the painted object is placed under a UVA-340 ultraviolet lamp and irradiated continuously for 15 days at intervals of 30 cm. After irradiation, the color state of the painted object is observed and scored on a scale of 1-5, where 1 is the worst, indicating severe discoloration, and 5 is the best, indicating that the color is still relatively bright.

[0088] It can be seen that the color fastness and color retention of the oil paints prepared in Comparative Examples 1, 2, 3, and 4 are lower than those in Examples 1, 2, and 3. This shows that in the preparation of the oil paint, by adding fillers, the fillers use ox horn powder and ox hoof nail as the main base materials, and after the ox horn powder is subjected to enzymatic hydrolysis, the animal fat remaining in the ox horn powder is hydrolyzed by lipase into glycerol and free fatty acids, thereby reducing its oil content. At the same time, the dense structure of keratin can be destroyed, the porosity and specific surface area of ​​the ox horn powder are increased, and the binding ability of the ox horn powder with other ingredients is improved. In addition, the toner particles can be fixed by van der Waals force, reducing the freedom and migration of the toner in the pigment coating, so that the toner is firmly anchored in the filler network and is not easy to fall off even if subjected to external friction, thereby effectively improving the color fastness of the oil paint.

[0089] Through the pretreatment of ox hoof nails, after high-temperature treatment, a porous carbon structure can be generated, which has a good adsorption capacity for color powder. Nano-silica and zirconium phosphate, as inorganic fillers, can provide a rigid skeleton support in the pigment system, inhibiting the state change of the pigment. At the same time, the layered structure of zirconium phosphate can absorb ultraviolet rays, slowing down the fading of oil paints caused by photooxidation, thereby improving the weather resistance of oil paints.

[0090] By setting up the steps of pre-treating the ox horn powder and the ox hoof nail together, during the soaking treatment in the treatment liquid, since the ox hoof nail needs to be treated separately later, the ox horn powder and the ox hoof nail are divided into two particle sizes during the soaking. After the soaking is completed, a simple screening step is performed to separate the ox horn powder and the ox hoof nail and treat them separately. This can simplify the preparation steps of the oil paint and reduce the preparation cost of the oil paint.

[0091] By comparing and analyzing the relevant data in the table, it can be seen that the oil painting pigment prepared by the present invention not only has good color fastness performance, but also has excellent color retention. This shows that the oil painting pigment provided by the present invention has a broader market prospect and is more suitable for promotion.

[0092] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0093] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An oil paint, characterized in that: The invention comprises the following raw materials in parts by weight: 60 to 80 parts of oil, 40 to 50 parts of color powder, 20 to 30 parts of filler, 20 to 30 parts of palm wax, 5 to 7 parts of stearic acid, 5 to 7 parts of dammar resin, 4 to 6 parts of polyamide resin, and 2 to 4 parts of lubricating oil; The filler is prepared by the following method: S1: preparing a base material, wherein the raw materials of the base material include ox horn powder, ox hoof nail, nano-silica, and zirconium phosphate. The ox horn powder and ox hoof nail are pretreated before preparing the base material, and the mass ratio of the raw materials is 4: (0.2-0.4): (0.1-0.3): (0.1-0.3); S2: Preparation of rubber compound, the raw materials of the rubber compound include hide glue, epoxidized soybean oil, and shellac resin, the mass ratio of each raw material is 1: (2-4): 1, and the mass of the rubber compound is 30-40% of the mass of the base material; S3: Filler preparation: base material and rubber material are mixed and prepared to obtain filler.

2. The oil paint according to claim 1, characterized in that The pretreatment method of ox horn powder and ox hoof nail is as follows: the ox horn powder is selected to have a particle size of 10 to 20 μm, the ox hoof nail is finely ground to a particle size of 40 to 60 μm, the ox horn powder, the ground ox hoof nail and the treatment liquid are added to a mixer, the mixer is set at 200 to 400 r / min and stirred for 10 to 20 minutes, the obtained product is allowed to stand at 30 to 36° C. for 10 to 20 hours, then sterilized at 80 to 90° C. for 20 to 30 minutes, the obtained product is added to a centrifuge, the centrifuge is set at 4000 to 6000 r / min and centrifuged for 6 to 7 minutes. 10 minutes, the precipitate is obtained from the product obtained by centrifugation, the precipitate is rinsed with deionized water, and then sent to an oven, and the oven is set at 50-60 ° C for drying for 4-6 hours. After the drying is completed, the obtained product is sieved, and the particles with smaller particle size are the pretreated ox horn powder. After the particles with larger particle size are sieved out, they are sent to a carbonization furnace. Under nitrogen protection, the heating rate is set at 4-6 ° C / min, and the temperature is raised to 300-340 ° C. and kept warm for 40-60 minutes. The obtained product is ground and the grinding particle size is 10-20 μm to complete the pretreatment of the ox hoof.

3. The oil paint according to claim 2, characterized in that: The mass of the treatment liquid is 3 to 5 times that of the horn powder.

4. The oil paint according to claim 2, characterized in that: The treatment liquid is prepared by the following method: polyphenol oxidase, lipase, protease and deionized water are added into a mixer, and the mixer is set at 300-400 r / min and stirred for 20-30 minutes to prepare the treatment liquid.

5. The oil paint according to claim 4, characterized in that: The mass ratio of polyphenol oxidase, lipase, protease and deionized water is 1:(0.4-0.6):(1-2):(200-300).

6. The oil paint according to claim 1, characterized in that: The method for preparing the glue is as follows: hide glue, epoxy soybean oil and shellac resin are added into a water bath, the water bath is heated to 50-70°C, and the water bath is connected to a magnetic stirrer, the speed of the magnetic stirrer is set to 200-300 r / min, and constant temperature stirring is performed for 20-30 minutes to prepare the glue.

7. The oil paint according to claim 1, characterized in that The filler preparation method comprises the following steps: adding a base material and a rubber material into a water bath, heating the water bath to 50-70° C., adding potassium sorbate into the water bath, and simultaneously connecting a magnetic stirrer, setting the speed of the magnetic stirrer to 400-500 r / min, and stirring at a constant temperature for 40-50 minutes to prepare the filler, wherein the mass of the potassium sorbate is 0.08-0.12% of the mass of the base material.

8. The oil paint according to claim 1, characterized in that The oil material is a mixture of linseed oil, glycerol and tocopherol, and the mass ratio of the linseed oil, glycerol and tocopherol is 10: (0.8-1.2): (0.02-0.04).

9. The oil paint according to claim 1, characterized in that: The lubricating oil is liquid paraffin.

10. A method for preparing an oil painting pigment according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Weigh oil, color powder and filler as needed and add them into a mixer. Set the mixer to 200-300 r / min and stir for 20-30 minutes to prepare a mixture. S2: Add the mixture into a reactor, weigh palm wax, stearic acid, dammar resin, polyamide resin, and lubricating oil as needed, heat the reactor to 60-70°C, stir at 300-500 r / min, and stir at a constant temperature for 30-40 minutes to obtain oil paint.

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