An artistic paint having a stable pearlescent appearance and a method of making the same

Abstract

The present application relates to the technical field of paint, especially to an artistic paint with stable pearlescent texture and a preparation method thereof, the artistic paint comprises a base artistic paint phase and a modified pearlescent pigment phase, wherein the modified pearlescent pigment phase is composed of a modified pearlescent pigment inner core structure, a modified titanium dioxide skeleton support structure coated on the outer side of the modified pearlescent pigment inner core structure, and a colloid material for welding the modified titanium dioxide skeleton support structure into a shell structure, the average particle size of the modified pearlescent pigment phase is 80-100 mu m, and the addition amount of the modified pearlescent pigment phase is 1-6 wt% of the base artistic paint phase. The artistic paint has the advantages of high hardness, good positive and negative surface effect, low VOC, good pearlescent sparkling texture effect, etc., and has a broad application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paint, in particular to an artistic paint with stable pearlescent luster and a preparation method thereof. BACKGROUND

[0002] With the gradual maturity of the Chinese paint market, the profit space of the traditional market is gradually compressed, and the paint industry is facing transformation pressure in the development dilemma period, and must explore new market blue ocean. The high profit of artistic paint has given birth to the development of the industry, and its decorative effect is extremely artistic and appreciative, which has awakened the consumer's consciousness of the beauty of paint products. Under the stimulation of consumer demand and the joint promotion of paint enterprises, the artistic paint market is developing in an orderly manner. However, at the same time, limited by the professional degree of color design and matching of each enterprise, especially the professional degree of each enterprise and construction personnel, the market popularization rate of artistic paint is still far from people's expectations. As one of the effect pigments, the application of pearlescent pigment in artistic paint generally has the problems of poor pearlescent luster or unstable pearlescent luster.

[0003] Therefore, the present application provides an artistic paint with stable pearlescent luster and a preparation method thereof. SUMMARY

[0004] Based on this, it is necessary to provide an artistic paint with stable pearlescent luster and a preparation method thereof in view of the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] According to a first aspect of the present application, an artistic paint with stable pearlescent luster is provided, comprising a basic artistic paint phase and a modified pearlescent pigment phase, wherein the modified pearlescent pigment phase is composed of a modified pearlescent pigment inner core structure, a modified titanium dioxide skeleton support structure coated on the outer side of the modified pearlescent pigment inner core structure, and a colloid material for welding the modified titanium dioxide skeleton support structure into a shell structure, the average particle size of the modified pearlescent pigment phase is 80-100 μm, and the addition amount of the modified pearlescent pigment phase is 1-6 wt% of the basic artistic paint phase.

[0007] In some optional implementations of some embodiments, the modified pearlescent pigment inner core structure comprises a pearlescent pigment structure and a zirconium dioxide layer coated on the surface of the pearlescent pigment structure, and the pearlescent pigment structure comprises one or more mixtures of natural mica substrate pearlescent pigment, synthetic mica substrate pearlescent pigment, silica substrate pearlescent pigment and alumina substrate pearlescent pigment.

[0008] In some optional implementations of some embodiments, the average particle size of the pearl pigment structure is 40-70 μm, and the thickness of the zirconium dioxide layer is 20-100 nm.

[0009] In some optional implementations of some embodiments, the modified titanium dioxide skeleton support structure is composed of 83-90 wt% of silica, 5-16 wt% of triethanolamine, and 1-5 wt% of silane coupling agent, and the mass ratio of the modified titanium dioxide skeleton support structure to the inner core structure of the modified pearl pigment is (2-5):(0.5-1).

[0010] In some optional implementations of some embodiments, the colloidal material is composed of (5-12):(1-3) of epoxy resin and amino resin, and the mass ratio of the colloidal material to the modified titanium dioxide skeleton support structure is (6-15):(85-94).

[0011] In some optional implementations of some embodiments, the base artistic paint phase comprises the following raw materials in parts by weight: 15-50 parts of polysiloxane modified waterborne epoxy resin emulsion, 1-6 parts of dispersant, 0.5-1.5 parts of wetting agent, 0.1-0.8 parts of mildewcide, 0.3-1 parts of pH adjuster, 0.1-0.5 parts of defoamer, 3-8 parts of film-forming aid, 0.5-2 parts of antifreeze, and 10-15 parts of thickening agent, with the remainder being water.

[0012] According to the second aspect of the present application, a preparation method of artistic paint with stable pearlescent luster is provided, comprising the following steps: placing a pearlescent pigment structure in a fluidized bed under the condition of nitrogen, making the pearlescent pigment structure in a suspended movement state by adjusting the nitrogen inlet speed, spraying zirconium dioxide into the fluidized bed through an atomizing nozzle, and making the zirconium dioxide coat the surface of the pearlescent pigment structure for 10-20 min to obtain a modified pearlescent pigment inner core structure; placing triethanolamine and a silane coupling agent in a stirrer, stirring for 5-10 min under the condition of 200-300 rpm, then adding a boron trifluoride ether catalyst to perform a coupling reaction, and obtaining a silicon-containing triethanolamine solution after separation and purification, then adding silicon dioxide to the silicon-containing triethanolamine solution, and stirring for 20-30 min under the condition of 400-600 rpm to obtain a silicon-containing triethanolamine modified titanium dioxide solution; placing the modified pearlescent pigment inner core structure, the silicon-containing triethanolamine modified titanium dioxide solution and a colloidal material in a stirrer to disperse, and stirring for 30-60 min under the condition of 200-300 rpm to obtain a mixed solution, drying and granulating the mixed solution using a spray dryer to obtain a modified pearlescent pigment phase; placing a polysiloxane modified water-based epoxy resin emulsion, a dispersant, a wetting agent, a mildew-proof agent, a bactericide, a pH regulator, a defoaming agent, a film-forming aid, an antifreeze agent and water in a stirrer, stirring for 8-10 min under the condition of 350-500 rpm, and then adding a thickening agent to obtain a basic artistic paint phase; adding the modified pearlescent pigment phase to the basic artistic paint phase, and stirring for 5-8 min under the condition of 200-300 rpm to obtain artistic paint.

[0013] In some optional implementations of some embodiments, the nitrogen inlet speed is 0.1-0.3 m / s.

[0014] In some optional implementations of some embodiments, the silane coupling agent is 3-aminopropyl triethoxysilane.

[0015] In some optional implementations of some embodiments, the air inlet temperature of the spray dryer is 120-150℃, and the feeding speed is 15-25 mL / min.

[0016] The art paint has the advantages that the art paint is mixed by a basic art paint phase and a modified pearl pigment phase, the modified pearl pigment phase is composed of a modified pearl pigment inner core structure, a modified titanium dioxide skeleton support structure coated outside the modified pearl pigment inner core structure, and a colloid material for welding the modified titanium dioxide skeleton support structure into a shell structure, the modified pearl pigment inner core structure is modified by zirconium dioxide on the pearl pigment structure, and the modified pearl pigment inner core structure and the zirconium dioxide are cooperative, so that the gloss, brightness and saturation of the surface of the pearl pigment structure are effectively improved, and the coating obtains more stable pearl effect; the modified titanium dioxide skeleton support structure is modified by silicon-containing triethanolamine on the titanium dioxide, so that the dispersion performance of the titanium dioxide in the paint mixed phase is improved, the amino resin can form chemical bonds between linear epoxy resin molecules, the linear epoxy resin molecules are connected to each other to form a network structure and are attached to the surface of the modified titanium dioxide skeleton support structure, the interaction between the modified titanium dioxide skeleton support structures is effectively enhanced, the modified titanium dioxide skeleton support structures are welded into the shell structure, the shell structure is similar to an inorganic film, the shell structure protects the modified pearl pigment inner core structure, the service life of the modified pearl pigment inner core structure is improved, and the synergistic effect between the modified titanium dioxide skeleton support structure and the modified pearl pigment inner core structure is beneficial to the stable and reliable pearl texture of the formed paint film; and the colloid material is amino resin and epoxy resin, which has good compatibility with the polysiloxane modified water-based epoxy resin emulsion in the art paint, so that the dispersibility of the modified pearl pigment phase in the basic art paint phase is further improved. The art paint has the advantages of high hardness, good positive and negative effects, low VOC, good pearl and sparkling texture, and the like, and has a wide application prospect. DETAILED DESCRIPTION

[0017] The application provides an art paint with stable pearl texture, which comprises a basic art paint phase and a modified pearl pigment phase, wherein the modified pearl pigment phase is composed of a modified pearl pigment inner core structure, a modified titanium dioxide skeleton support structure coated outside the modified pearl pigment inner core structure, and a colloid material for welding the modified titanium dioxide skeleton support structure into a shell structure, the average particle size of the modified pearl pigment phase is 80-100 μm, and the addition amount of the modified pearl pigment phase is 1-6 wt% of the basic art paint phase.

[0018] Preferably, the modified pearl pigment inner core structure comprises a pearl pigment structure and a zirconium dioxide layer coated on the surface of the pearl pigment structure, and the pearl pigment structure comprises one or more of a mixture of natural mica substrate pearl pigment, synthetic mica substrate pearl pigment, silica substrate pearl pigment and alumina substrate pearl pigment.

[0019] Preferably, the average particle size of the nacreous pigment structure is 40-70 μm, and the thickness of the zirconium dioxide layer is 20-100 nm.

[0020] Preferably, the modified titanium dioxide skeleton support structure is composed of 83-90 wt% of silica, 5-16 wt% of triethanolamine and 1-5 wt% of silane coupling agent, and the mass ratio of the modified titanium dioxide skeleton support structure to the inner core structure of the modified nacreous pigment is (2-5):(0.5-1).

[0021] Preferably, the colloidal material is composed of (5-12):(1-3) of epoxy resin and amino resin, and the mass ratio of the colloidal material to the modified titanium dioxide skeleton support structure is (6-15):(85-94).

[0022] Preferably, the base artistic paint phase comprises the following raw materials in parts by weight: 15-50 parts of polysiloxane modified waterborne epoxy resin emulsion, 1-6 parts of dispersant, 0.5-1.5 parts of wetting agent, 0.1-0.8 parts of mildewcide, 0.3-1 parts of pH adjuster, 0.1-0.5 parts of defoamer, 3-8 parts of film-forming aid, 0.5-2 parts of antifreeze and 10-15 parts of thickening agent, and the rest is water.

[0023] Preferably, the dispersant is a polycarboxylic acid sodium salt dispersant, the wetting agent is a fatty alcohol polyoxyethylene ether, the mildewcide is self-carton, the pH adjuster is ammonia water, the defoamer is a polyether modified organic silicon defoamer, the film-forming aid is OE400, the antifreeze is FT-68, and the thickening agent is cellulose.

[0024] The application also provides a preparation method of artistic paint with stable pearlescent quality, comprising the following steps: placing a pearlescent pigment structure in a fluidized bed under the condition of nitrogen, making the pearlescent pigment structure in a suspended movement state by adjusting the nitrogen inlet speed, spraying zirconium dioxide into the fluidized bed through an atomizing nozzle, and making the zirconium dioxide coat on the surface of the pearlescent pigment structure for 10-20 min to obtain a modified pearlescent pigment inner core structure; placing triethanolamine and a silane coupling agent in a stirrer, stirring for 5-10 min under the condition of 200-300 rpm, then adding a boron trifluoride diethyl ether catalyst to perform a coupling reaction, and obtaining a silicon-containing triethanolamine solution after separation and purification, then adding silicon dioxide to the silicon-containing triethanolamine solution, and stirring for 20-30 min under the condition of 400-600 rpm to obtain a silicon-containing triethanolamine modified titanium dioxide solution; dispersing the modified pearlescent pigment inner core structure, the silicon-containing triethanolamine modified titanium dioxide solution and a colloidal material in a stirrer, and stirring for 30-60 min under the condition of 200-300 rpm to obtain a mixed solution, drying and granulating the mixed solution by using a spray dryer to obtain a modified pearlescent pigment phase; placing a polysiloxane modified water-based epoxy resin emulsion, a dispersant, a wetting agent, a mildew-proof agent, a bactericide, a pH regulator, a defoaming agent, a film-forming aid, an antifreeze agent and water in a stirrer, stirring for 8-10 min under the condition of 350-500 rpm, and then adding a thickening agent to obtain a basic artistic paint phase; adding the modified pearlescent pigment phase to the basic artistic paint phase, and stirring for 5-8 min under the condition of 200-300 rpm to obtain the artistic paint.

[0025] It should be noted that the raw materials of the artistic paint involved in the application are all commercially available products.

[0026] The technical solutions of the application are clearly and completely described below in combination with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application. The equivalent transformation or replacement of the method, process route, function and the like made by those skilled in the art according to the following embodiments all fall within the protection scope of the application.

[0027] Embodiment 1

[0028] An artistic paint with stable pearlescent luster, comprising a base artistic paint phase and a modified pearlescent pigment phase, wherein the modified pearlescent pigment phase is composed of a modified pearlescent pigment inner core structure, a modified titanium dioxide skeleton support structure coated on the outside of the modified pearlescent pigment inner core structure, and a colloid material welding the modified titanium dioxide skeleton support structure into a shell structure, the average particle size of the modified pearlescent pigment phase is 80-100 μm, and the addition amount of the modified pearlescent pigment phase is 1 wt% of the base artistic paint phase.

[0029] In the present embodiment, the modified pearlescent pigment inner core structure comprises a pearlescent pigment structure and a zirconium dioxide layer coated on the surface of the pearlescent pigment structure, and the pearlescent pigment structure is a natural mica substrate pearlescent pigment.

[0030] In the present embodiment, the average particle size of the pearlescent pigment structure is 40-70 μm, and the thickness of the zirconium dioxide layer is 20 nm.

[0031] In the present embodiment, the modified titanium dioxide skeleton support structure is composed of 83 wt% of silicon dioxide, 16 wt% of triethanolamine, and 1 wt% of silane coupling agent, and the mass ratio of the modified titanium dioxide skeleton support structure to the modified pearlescent pigment inner core structure is 2:0.5.

[0032] In the present embodiment, the colloid material is composed of 5:1 of epoxy resin and amino resin by mass ratio, and the mass ratio of the colloid material to the modified titanium dioxide skeleton support structure is 6:85.

[0033] In the present embodiment, the base artistic paint phase comprises the following raw materials by weight: 15 parts of polysiloxane modified water-based epoxy resin emulsion, 1 part of dispersant, 0.5 part of wetting agent, 0.1 part of mildewcide, 0.3 part of pH adjuster, 0.1 part of defoamer, 3 parts of film-forming aid, 0.5 part of antifreeze, and 10 parts of thickening agent, and the rest is water.

[0034] In the present embodiment, a method for preparing an artistic paint with stable pearlescent quality, comprising: placing a pearlescent pigment structure in a fluidized bed under the condition of nitrogen, making the pearlescent pigment structure in a suspended motion state by adjusting the nitrogen inlet speed, spraying zirconium dioxide into the fluidized bed through an atomizing nozzle, and allowing the zirconium dioxide to coat on the surface of the pearlescent pigment structure for 10-20 min to obtain a modified pearlescent pigment inner core structure; placing triethanolamine and a silane coupling agent in a stirrer, stirring at 200-300 rpm for 5-10 min, then adding a boron trifluoride ether catalyst for coupling reaction, and separating and purifying to obtain a silicon-containing triethanolamine solution, then adding silica to the silicon-containing triethanolamine solution, and stirring at 400-600 rpm for 20-30 min to obtain a silicon-containing triethanolamine modified titanium dioxide solution; dispersing the modified pearlescent pigment inner core structure, the silicon-containing triethanolamine modified titanium dioxide solution, and a colloidal material in a stirrer, and stirring at 200-300 rpm for 30-60 min to obtain a mixed solution, drying and granulating the mixed solution using a spray dryer to obtain a modified pearlescent pigment phase; placing a polysiloxane modified water-based epoxy resin emulsion, a dispersant, a wetting agent, a mildew-proof agent, a bactericide, a pH regulator, a defoaming agent, a film-forming aid, an antifreeze agent, and water in a stirrer, stirring at 350-500 rpm for 8-10 min, and then adding a thickening agent to obtain a basic artistic paint phase; adding the modified pearlescent pigment phase to the basic artistic paint phase, and stirring at 200-300 rpm for 5-8 min to obtain an artistic paint.

[0035] Example 2

[0036] In the present embodiment, the raw materials and preparation method of the artistic paint are the same as those of Example 1, except that the addition amount of the modified pearlescent pigment phase is 6 wt% of the basic artistic paint phase, and the other components remain unchanged.

[0037] Example 3

[0038] In the present embodiment, the raw materials and preparation method of the artistic paint are the same as those of Example 1, except that the thickness of the zirconium dioxide layer is 100 nm, and the other components remain unchanged.

[0039] Example 4

[0040] In the present embodiment, the raw materials and preparation method of the artistic paint are the same as those of Example 1, except that the modified titanium dioxide skeleton support structure is composed of 90 wt% of silica, 5 wt% of triethanolamine, and 5 wt% of a silane coupling agent, and the other components remain unchanged.

[0041] Example 5

[0042] The raw materials and preparation method of the artistic paint involved in this embodiment are the same as those in Embodiment 1, except that the mass ratio of the modified titanium dioxide skeleton support structure to the inner core structure of the modified pearl pigment is 5:1, and the remaining components are unchanged.

[0043] Embodiment 6

[0044] The raw materials and preparation method of the artistic paint involved in this embodiment are the same as those in Embodiment 1, except that the colloidal material is composed of epoxy resin and amino resin with a mass ratio of 12:3, and the remaining components are unchanged.

[0045] Embodiment 7

[0046] The raw materials and preparation method of the artistic paint involved in this embodiment are the same as those in Embodiment 1, except that the mass ratio of the colloidal material to the modified titanium dioxide skeleton support structure is 15:94, and the remaining components are unchanged.

[0047] Embodiment 8

[0048] The raw materials and preparation method of the artistic paint involved in this embodiment are the same as those in Embodiment 1, except that the base artistic paint phase includes the following raw materials in parts by weight: polysiloxane modified waterborne epoxy resin emulsion 50 parts, dispersing agent 6 parts, wetting agent 1.5 parts, mildewcide 0.8 parts, pH adjuster 1 part, defoamer 0.5 parts, film-forming aid 8 parts, antifreeze 2 parts, and thickening agent 15 parts, and the rest is water, and the remaining components are unchanged.

[0049] Comparative Example 1

[0050] The raw materials and preparation method of the base artistic paint phase involved in this comparative example are the same as those in Embodiment 1, except that natural mica substrate pearl pigment is directly used as the pearl pigment phase, and the remaining components are unchanged.

[0051] Comparative Example 2

[0052] The raw materials and preparation method of the artistic paint involved in this comparative example are the same as those in Embodiment 1, except that the addition amount of the modified pearl pigment phase is 0.8wt% of the base artistic paint phase, and the remaining components are unchanged.

[0053] Comparative Example 3

[0054] The raw materials and preparation method of the artistic paint involved in this comparative example are the same as those in Embodiment 1, except that the addition amount of the modified pearl pigment phase is 6.5wt% of the base artistic paint phase, and the remaining components are unchanged.

[0055] Comparative Example 4

[0056] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the modified titanium dioxide skeleton support structure is composed of silica 82wt%, triethanolamine 17.5wt%, and silane coupling agent 0.5wt%, and the remaining components are unchanged.

[0057] Comparative Example 5

[0058] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the modified titanium dioxide skeleton support structure is composed of silica 77wt%, triethanolamine 17wt%, and silane coupling agent 6wt%, and the remaining components are unchanged.

[0059] Comparative Example 6

[0060] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the mass ratio of the modified titanium dioxide skeleton support structure to the inner core structure of the modified pearl pigment is 1:0.2, and the remaining components are unchanged.

[0061] Comparative Example 7

[0062] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the mass ratio of the modified titanium dioxide skeleton support structure to the inner core structure of the modified pearl pigment is 6:1.5, and the remaining components are unchanged.

[0063] Comparative Example 8

[0064] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the colloidal material is composed of epoxy resin and amino resin with a mass ratio of 4:0.5, and the remaining components are unchanged.

[0065] Comparative Example 9

[0066] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the colloidal material is composed of epoxy resin and amino resin with a mass ratio of 13:4, and the remaining components are unchanged.

[0067] Comparative Example 10

[0068] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the mass ratio of the colloidal material to the modified titanium dioxide skeleton support structure is 5:84, and the remaining components are unchanged.

[0069] Comparative Example 11

[0070] The raw materials and preparation method of the art paint involved in this comparative example are the same as those of Example 1, except that the mass ratio of the colloidal material to the modified titanium dioxide skeleton support structure is 16:95, and the remaining components are unchanged.

[0071] Comparative Example 12

[0072] The raw materials and preparation method of the art paint involved in the present comparative example are the same as those of Example 1, except that the base art paint phase comprises the following raw materials by weight: polysiloxane modified waterborne epoxy resin emulsion 14 parts, dispersant 0.5 parts, wetting agent 0.3 parts, mildewcide 0.05 parts, pH adjuster 0.2 parts, defoamer 0.05 parts, film-forming aid 2 parts, antifreeze 0.4 parts, and thickening agent 8 parts, the rest being water, and the rest of the components remain unchanged.

[0073] Comparative Example 13

[0074] The raw materials and preparation method of the art paint involved in the present comparative example are the same as those of Example 1, except that the base art paint phase comprises the following raw materials by weight: polysiloxane modified waterborne epoxy resin emulsion 51 parts, dispersant 7 parts, wetting agent 2 parts, mildewcide 1 part, pH adjuster 1.5 parts, defoamer 0.8 parts, film-forming aid 9 parts, antifreeze 2.5 parts, and thickening agent 16 parts, the rest being water, and the rest of the components remain unchanged.

[0075] Performance evaluation: the art paints of Examples 1-8 and Comparative Examples 1-13 were tested for performance, and the evaluation methods included hardness: pencil hardness, referring to GB / T6739-2006; yin and yang surface: the performance intensity of different gloss differences, visual observation, full score 10 points; free formaldehyde: GB 18582-2020, requiring free formaldehyde limit ≤100 mg / kg; VOC: GB 18582-2020, requiring VOC ≤120 g / L; coating appearance: visual observation, the test results are shown in Table 1.

[0076] Table 1 Performance test comparison table of Examples 1-8 and Comparative Examples 1-13

[0077]

[0078]

[0079]

[0080] As can be seen from Table 1, the art paints of Examples 1-8 have the advantages of high hardness, good yin and yang surface effect, low VOC, good pearl luster and other advantages after construction, and have broad application prospects.

[0081] The application also further carries out the chemical resistance test of Example 1, wherein the gasoline resistance: GB / T9274-88 method A, requires room temperature immersion in 95# gasoline; the damp heat test: GB / T 1740-2007, requires no damage to the coating, the temperature is 47℃, the humidity is 96%, and the time is 1000h; the acid resistance test: after immersion in a 0.05mol sulfuric acid solution for 24h, the coating gloss is detected again, and the gloss retention rate is calculated (gloss retention rate = coating gloss after acid resistance test / coating gloss before acid resistance test); the alkali resistance test: after immersion in a 0.1mol NaOH solution for 24h, the coating gloss is detected again, and the gloss retention rate is calculated (gloss retention rate = coating gloss after alkali resistance test / coating gloss before alkali resistance test), and the test results are shown in Table 2.

[0082] Table 2: Chemical resistance test results of Example 1

[0083] No. Gasoline resistance Damp heat test Acid resistance test Alkali resistance test Example 1 No change in coating No blistering and no corrosion on coating surface Gloss retention = 100% Gloss retention = 100%

[0084] As shown in Table 2, after the construction of the artistic paint of Example 1, the pearlescent effect is relatively stable after the chemical resistance test.

[0085] The above is a further detailed description of the application in combination with specific embodiments, and the specific implementation of the application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the application belongs, some simple deductions or substitutions can be made without departing from the concept of the application, and all of them should be regarded as falling within the protection scope of the application.

Claims

1. An artistic paint having a stable pearlescent appearance, characterized in that, The modified pearl pigment phase is composed of a modified pearl pigment inner core structure, a modified titanium dioxide skeleton support structure coated on the outside of the modified pearl pigment inner core structure, and a colloid material welding the modified titanium dioxide skeleton support structure into a shell structure, wherein the average particle size of the modified pearl pigment phase is 80-100 μm, and the addition amount of the modified pearl pigment phase is 1-6 wt% of the base artistic paint phase. The modified pearl pigment inner core structure comprises a pearl pigment structure and a zirconium dioxide layer coated on the surface of the pearl pigment structure. The modified titanium dioxide skeleton support structure is composed of 83-90 wt% of titanium dioxide, 5-16 wt% of triethanolamine, and 1-5 wt% of a silane coupling agent, and the mass ratio of the modified titanium dioxide skeleton support structure to the modified pearl pigment inner core structure is (2-5):(0.5-1). The colloid material is composed of 5-12:1-3 of epoxy resin and amino resin by mass ratio, and the mass ratio of the colloid material to the modified titanium dioxide skeleton support structure is (6-15):(85-94). The base artistic paint phase comprises the following raw materials by weight: 15-50 parts of polysiloxane modified water-based epoxy resin emulsion, 1-6 parts of dispersant, 0.5-1.5 parts of wetting agent, 0.1-0.8 parts of mildew-proof agent, 0.3-1 parts of pH adjuster, 0.1-0.5 parts of defoaming agent, 3-8 parts of film-forming aid, 0.5-2 parts of antifreeze, and 10-15 parts of thickening agent, with the rest being water.

2. The artistic paint having a stable pearlescent luster according to claim 1, characterized by, The pearl pigment structure comprises one or more mixtures of natural mica substrate pearl pigment, synthetic mica substrate pearl pigment, silica substrate pearl pigment, and alumina substrate pearl pigment.

3. The artistic paint having a stable pearlescent luster according to claim 2, characterized by, The average particle size of the pearl pigment structure is 40-70 μm, and the thickness of the zirconium dioxide layer is 20-100 nm.

4. A process for the preparation of an artistic paint with stable nacreous effect according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: Under the condition of nitrogen, the pearl pigment structure is placed in a fluidized bed, the pearl pigment structure is kept in a suspended state by adjusting the nitrogen inlet speed, zirconium dioxide is sprayed into the fluidized bed through an atomizing nozzle, and the zirconium dioxide is coated on the surface of the pearl pigment structure by continuously reacting for 10-20 min to obtain a modified pearl pigment inner core structure; The triethanolamine and the silane coupling agent are placed in a stirrer, stirred at 200-300 rpm for 5-10 min, then a boron trifluoride ether catalyst is added for coupling reaction, and a silicon-containing triethanolamine solution is obtained after separation and purification, then titanium dioxide is added to the silicon-containing triethanolamine solution, and stirred at 400-600 rpm for 20-30 min to obtain a silicon-containing triethanolamine modified titanium dioxide solution; The modified pearl pigment inner core structure, the silicon-containing triethanolamine modified titanium dioxide solution, and the colloid material are dispersed in a stirrer and stirred at 200-300 rpm for 30-60 min to obtain a mixed solution, and the mixed solution is dried and granulated using a spray dryer to obtain a modified pearl pigment phase. The polysiloxane modified waterborne epoxy resin emulsion, dispersant, wetting agent, mildewcide, bactericide, pH regulator, defoaming agent, film forming aid, antifreezing agent and water are placed in a stirrer, stirred for 8-10 min at 350-500 rpm, and then the thickening agent is added to obtain a base artistic coating phase; The modified pearl pigment phase is added into the base artistic coating phase, stirred for 5-8 min at 200-300 rpm to obtain an artistic coating.

5. A method of preparing an artistic paint having a stable pearlescent appearance according to claim 4, characterized in that, The nitrogen gas is introduced at a speed of 0.1-0.3 m / s.

6. The method of preparing an artistic paint having a stable pearlescent appearance according to claim 4, wherein The silane coupling agent is 3-aminopropyl triethoxysilane.

7. The method of preparing an artistic paint having a stable pearlescent appearance according to claim 4, wherein The air inlet temperature of the spray dryer is 120-150 ℃, and the feeding speed is 15-25 mL / min.

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