CN116731580A

CN116731580A - High-hardness stain-resistant pearlescent art paint and preparation method thereof

Info

Publication number: CN116731580A
Application number: CN202310906222.9A
Authority: CN
Inventors: 刘伟达; 区英强; 陈颖; 陈蔚清; 蔡天康; 蔡智权
Original assignee: Guangdong Carpoly Science & Technology Material Co ltd
Current assignee: Guangdong Carpoly Science & Technology Material Co ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2023-09-12
Anticipated expiration: 2043-07-21
Also published as: CN116731580B

Abstract

The application discloses a high-hardness pollution-resistant pearlescent art paint and a preparation method thereof, and belongs to the technical field of art paint. The artistic coating disclosed by the application takes silica sol as a main raw material, takes modified emulsion containing silicon as an organic film forming substance, adds a catalyst and pearl powder, and then assists in adding various assistants with special functions, thus overcoming the defects that the pearl artistic coating on the market at present is difficult to achieve high hardness and even stain resistance while being good in sunny and sunny sides.

Description

High-hardness stain-resistant pearlescent art paint and preparation method thereof

Technical Field

The application belongs to the technical field of art paint, and particularly relates to a high-hardness pollution-resistant pearlescent art paint and a preparation method thereof.

Background

At present, the artistic coating with the pearl effect is the most popular type of artistic coating in the water-based artistic coating, and can show colorful decorative effects with novel effect and luxurious texture according to different types, different colors, different particle sizes and different dosages of pearl powder.

But is limited by the defects of construction and research and development technology level, the effect of the sunny and shady surface is difficult to be made, the sunny and shady surface is difficult to distinguish, the hard and feel is rough, and the scratch resistance of the pearl powder is not as soft as that of the conventional pigment and filler, the scratch is left after the pearl powder is gently scratched by fingernails, the trace is difficult to repair or even cannot be repaired, the beauty is affected, and in addition, the water-resistant color pen performance is quite poor. The existing solutions on the market generally endow the pearly-lustre effect with hardness and dirt resistance by rolling a coating cover layer on the pearly-lustre effect, but in doing so, the metal effect of the pearly-lustre powder is weakened, the effect of the sun-shade surface is weakened or even not, the hardness is difficult to achieve better improvement due to the fact that the previous coating layer is softer, and the hardness is not improved by nature, so that the problems cannot be well solved.

Therefore, the pearlescent art paint on the market at present is difficult to achieve the high hardness and even the stain resistance performance while having good sunny and shady surfaces. The reason is two, firstly, the pearlescent paint is difficult to achieve high hardness when being on the sunny and shady side, because the pearlescent powder material is softer, if the filler such as talcum powder, mica powder, heavy calcium and the like is added, the hardness of the material can be improved, but the introduction of the filler has different degrees of influence on the oriented arrangement of the pearlescent powder, so that the effect of the sunny and shady side is reduced. Secondly, the pearlescent paint is good on the sunny and shady side and difficult to achieve the stain-resistant performance, because the pearlescent powder is loose and porous in texture, and the common emulsion is difficult to coat the pearlescent powder, so that the stain-resistant performance can be achieved only by more emulsion, a layer of emulsion film is formed on the pearlescent powder once the emulsion consumption is more, the effect of the sunny and shady side is reduced, and the phenomenon that the construction process is sticky and not firm is caused due to the excessive emulsion consumption in the construction process, so that the effect of the sunny and shady side is greatly reduced.

Disclosure of Invention

The application provides a high-hardness pollution-resistant pearlescent art coating and a preparation method thereof, which aim to solve the technical problem that the sun and shade surfaces are reduced under the condition of high hardness or pollution resistance.

In a first aspect, the application provides a high-hardness pollution-resistant pearlescent art paint, which comprises the following components in parts by weight:

20-30 parts of solvent, 10-25 parts of silica sol, 20-30 parts of organic film forming substance, 1-3 parts of catalyst, 3-5 parts of auxiliary agent and 12-35 parts of pearl powder, wherein 6-10 parts of silica sol, 1-3 parts of catalyst and 12-15 parts of organic film forming substance form a premix solution;

the auxiliary agent comprises a wetting agent, a dispersing agent, a defoaming agent, a thickening agent, a film forming auxiliary agent, a drier and a corrosion-resistant mildew-proof agent, wherein the drier is 75% (v/v) ethanol.

Further, the paint comprises the following components in parts by weight:

28 parts of solvent, 18 parts of silica sol, 29 parts of organic film forming substance, 2 parts of catalyst, 3.3 parts of auxiliary agent and 20 parts of pearl powder, wherein 8 parts of silica sol, 2 parts of catalyst and 14 parts of organic film forming substance form a premix solution.

Further, the catalyst is a silane coupling agent, and a commercially available product, for example, A-171, can be selected. The organic film forming material is silicone-acrylic emulsion.

Further, the silica sol has a modulus of 50 or more and a particle diameter of 7 to 100nm.

Further, the auxiliary agent comprises the following components in parts by weight: 0.2 to 0.6 part of wetting agent, 0.5 to 1.2 parts of dispersing agent, 0.3 to 1.0 part of defoaming agent, 0.3 to 0.9 part of thickening agent, 0.5 to 1.5 parts of film forming auxiliary agent, 0.5 to 1.5 parts of drier and 0.2 to 0.5 part of antiseptic and mildew preventive.

Further, the raw material of the pearl powder is natural mica or synthetic mica.

In a second aspect, the application provides a method for preparing the high-hardness and stain-resistant pearlescent art paint according to any one of the first aspect, comprising the following steps:

(1) Weighing the components of the premix solution according to parts by weight, and uniformly stirring to obtain the premix solution;

(2) Uniformly mixing a solvent and a thickener, and then adding the rest components in the auxiliary agent to uniformly mix to prepare an auxiliary agent solution;

(3) Uniformly stirring the premixed solution and the auxiliary agent solution, and then adding pearl powder for continuous stirring to obtain a mixed solution;

(4) Adding the rest organic film forming substances and silica sol into the mixed solution, continuously stirring, and then adding the bactericide and the antiseptic and mildew inhibitor.

Further, the stirring speed in the step (1) is 800-1200 rpm, and the stirring time is 10-15 min.

Further, the stirring speed in the step (2) and the step (4) is 500-800 rpm, and the stirring time is 3-5 min.

Further, the stirring speed of adding the pearl powder in the step (3) is 1500-2000 rpm, and the stirring time is 15-25 min; the stirring speed of the premixed solution and the auxiliary solution is 500-800 rpm, and the stirring time is 3-5 min.

Compared with the prior art, the technical scheme provided by the embodiment of the application has at least the following advantages:

1. according to the high-hardness pollution-resistant pearlescent art paint, silica sol is introduced, and the silica sol can react with carbon dioxide in air to form a siloxane space network skeleton structure, so that the hardness of a paint film is improved while the directional arrangement of pearlescent powder is not influenced.

The reactivity or compatibility of the silica sol and the organic film forming substance can be enhanced by adding the catalyst, and the characteristic of the catalyst is utilized to form a bonding layer of an organic matrix-the silane coupling agent-the inorganic matrix when the catalyst silane coupling agent is arranged between an inorganic (pearly luster powder treatment coating) and an organic (organic film forming substance) interface, so that the coating property of the emulsion on the pearly luster powder can be enhanced to a certain extent.

By selecting the organosilicon modified emulsion, the organosilicon modified emulsion can strengthen the reaction with the silane coupling agent and has smoothness, so that the organosilicon modified emulsion can not cause sticking under the condition of higher addition amount.

The gel is prepared by reacting the organosilicon modified emulsion and the silica sol under the condition of a silane coupling agent, and the prepared gel has high hardness and extremely strong wrapping performance on the pearl powder, so that the stain resistance is improved to a certain extent. The gel generation principle is that Si-O-in silica sol and Si in organosilicon modified emulsion are subjected to crosslinking reaction to form a reticular framework gel structure connected by silicon dioxide Si-O-Si, so that the hardness is improved.

By introducing the drier, the volatilization of water is quickened, so that the time for disordered arrangement of the pearl powder under the influence of the benard vortex to cause disordered orientation of the pearl powder is reduced, and the influence of a reticular framework structure formed by the silica sol on the orientation of the pearl powder is reduced to a certain extent.

2. The preparation method of the application comprises the steps of firstly preparing a premix solution, then controlling the production process of the coating, enabling the organosilicon modified emulsion to form gel with a part of silica sol under the condition of a silane coupling agent, obtaining modified silica sol, and then adding the emulsion and the silica sol. The prepared artistic coating has high-hardness, dirt-resistant and pearlescent properties.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of the alignment effect of a drier on pearlescent powder;

FIG. 2 is a schematic illustration of the coatings of inventive example 1, comparative example 5 and comparative example 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.

20-30 parts of solvent, 10-25 parts of silica sol, 20-30 parts of organic film forming substance, 1-3 parts of catalyst, 3-5 parts of auxiliary agent and 12-35 parts of pearl powder, wherein 6-10 parts of silica sol, 1-3 parts of catalyst and 12-15 parts of organic film forming substance form a premix solution; the auxiliary agent comprises a wetting agent, a dispersing agent, a defoaming agent, a thickening agent, a film forming auxiliary agent, a drier and an anti-corrosion and mildew-proof agent, wherein the drier is ethanol.

Wherein the solvent is water.

In the application, the wetting agent is at least one selected from polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene polyoxypropylene segmented copolymer, alkylaryl polyether, polyoxyethylene alkylaryl ether, polyethoxy nonylphenol or sodium alkyl sulfosuccinate and nonionic alkoxylated alcohol surfactant, and is a conventional commercial product, wherein polyoxyethylene alkylphenol ether or a derivative thereof is adopted and is purchased from Craien brand number LCN 407;

the dispersing agent is at least one selected from polyphosphate, polyacrylate, polystyrene/maleate and polyisobutylene maleate, and is conventional commercial product, such as sodium polyacrylate, commercially available from Santopaceae under the trade name SN-5040;

the film forming auxiliary agent is OE400 or OE300;

the defoamer is selected from mineral oil defoamer and/or organic silicon surfactant, and is a conventional commercial product, for example, a mixture of polyether organic silicon mineral oil is adopted, and the defoamer is purchased from Nortaceae and has NXZ;

the antiseptic and mildew-proof agent is at least one of pinus koraiensis, BIT, 631 and MBS 5050;

the drier is ethanol, and the volume fraction is 75%;

the thickener is ethylcellulose HBR250, which is a commercial product.

Within the scope of the present application, adjuvants other than the above-mentioned adjuvants may be added for optimization of performance, such as pH adjusters, antifreezes, bactericides, and the like. The antifreezing agent is glycol; the pH regulator is at least one selected from ammonia water, naOH and AMP 95.

The various auxiliary agents in the application are not conventional additives in the field, and the principle is as follows: the inventor considers that the common method for improving the hardness is to improve raw materials of the formula, namely the filler and the emulsion, but the use of the filler can cause the deterioration of the pearlescent effect, and the excessive emulsion can cause the deterioration of the construction.

The solution of the application is to use silica sol, but the use of silica sol in pearl powder is not a common solution, because silica sol can bring hardness improvement in common paint, but is easy to agglomerate, serious in post-thickening and damaged in paint film, so that many building paints cannot be used. Or adding a stabilizer in the using process, and then coating the pearl powder with titanium tetrachloride or metal oxide, wherein metal ions of the titanium tetrachloride or metal oxide are easier to carry out condensation reaction with silica sol. The scheme of the application forms a 'gel' through pre-reaction with the organosilicon emulsion under the action of a catalyst, the 'gel' can prevent the agglomeration reaction of the silica sol in the system to a certain extent, and the 'gel' has enhanced coating property on the pearl powder. The emulsion is needed to be organic silicon emulsion, otherwise the strength of the generated gel is too low, and the package of the pearl powder is limited.

Meanwhile, the drier is ethanol, the environmental protection standard of the water-based paint is exceeded due to the introduction of other drier, and the conventional purpose of the drier is to simply accelerate the drying speed of the product, namely, the drier is not added, and the performance of the product is not changed, but the drier is introduced in the scheme of the application to achieve the oriented arrangement of the pearl powder, and the commonly used oriented arrangement agent of the pearl powder is EVA wax.

In summary, the hardness is improved by introducing the silica sol, but the introduction of the silica sol can cause the problems of paint agglomeration, serious post-thickening, coating pulverization and the like, the agglomeration reaction of the silica sol in a system can be prevented to a certain extent by forming the gel with the organosilicon emulsion under the action of the catalyst, and the coating property of the gel on the pearl powder is enhanced. Thus solving the influence of silica sol on the coating under the condition of improving the stain resistance and the hardness. Because the space network skeleton structure formed by the silica sol can influence the oriented arrangement of the pearl powder, the oriented arrangement of the pearl powder is carried out by introducing a drier and accelerating the shrinkage of the product. The alignment effect of flash drying on pearl powder is shown in figure 1.

(1) Firstly adding a catalyst and an organic film forming substance into silica sol according to parts by weight, stirring for 10-15 min at 800-1200 rpm to prepare a premixed solution, and standing for later use;

(2) Adding water and thickener into the container, stirring at 500-800 rpm for 3-5 min;

(3) Adding dispersant, wetting agent, defoamer, drier and film forming auxiliary agent, stirring for 3-5 min at 500-800 rpm;

(4) Adding the premixed solution, and stirring for 3-5 min at 500-800 rpm;

(5) Adding pearl powder, stirring for 15-25 min at 1500-2000 rpm to obtain mixed solution;

(6) Adding the rest silica sol and organic film forming matter, rotating at 500-800 rpm, stirring for 3-5 min

(7) Adding bactericide and antiseptic and mildew inhibitor to obtain the final product.

The rotating speed in the application is a specific parameter, wherein the high rotating speed mainly meets the requirements for particle size and reaction effect, and when in reaction, the rotating speed is too low, the phenomena of excessive local reaction, coarsening and the like are easily caused, and the molecules obtained by the reaction are easily broken due to the too high rotating speed; the rest of the low rotation speed is only needed for stirring uniformly.

The principles and features of the present application are described below in connection with the following examples, which are set forth to illustrate, but are not to be construed as limiting the scope of the application. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.

In the following examples, the silica sol has a modulus of 50 and a particle size of 50nm.

Example 1

The embodiment provides a high-hardness pollution-resistant pearlescent art paint, which comprises the following components in parts by weight: 28 parts of solvent (water), 18 parts of silica sol, 29 parts of silicone-acrylic emulsion, 2 parts of A-171 silane coupling agent, 3.3 parts of auxiliary agent and 20 parts of pearl powder. Wherein, 3.5 parts of auxiliary agent comprises 0.5 part of ethyl cellulose HBR250 thickener, 0.8 part of SN-5040 (dispersing agent), 0.3 part of LCN 407 wetting agent, 0.3 part of NXZ defoamer, 0.2 part of ethanol, 1 part of OE400 (Izeman film-forming auxiliary agent purchased from the chemical trade of the American kernel of Buddha) and 0.2 part of antiseptic mildew inhibitor (UK Torl chemical MBS 5050).

The high-hardness stain-resistant pearlescent art paint of the embodiment is prepared by the following method:

step S1: preparing a premix solution, namely adding 2 parts of catalyst and 14 parts of silicone-acrylic emulsion into 8 parts of silica sol, stirring for 10min at 1200rpm to prepare the premix solution, and standing for later use;

step S2: 28 parts of water and 0.5 part of thickener are added into a container and stirred at 800rpm for 3min;

step S3: then adding 0.8 part of dispersing agent, 0.3 part of polyoxyethylene alkylphenol ether, 0.3 part of defoamer, 0.2 part of drier and 1 part of film forming auxiliary agent, and stirring for 3min at 600 rpm;

step S4: adding the premix solution, and stirring at 800rpm for 3min;

step S5: adding 20 parts of pearl powder, and stirring at 2000rpm for 15min to obtain a mixed solution;

step S6: adding the rest 10 parts of silica sol and 15 parts of silicone-acrylic emulsion, reducing the rotating speed to 800rpm, and stirring for 5 minutes;

step S7: 0.2 part of bactericide and 0.2 part of antiseptic and mildew preventive are added to obtain the finished product, as shown in figure 2.

Example 2

The embodiment provides a high-hardness pollution-resistant pearlescent art paint, which comprises the following components in parts by weight: 30 parts of water, 25 parts of silica sol, 30 parts of silicone-acrylic emulsion, 3 parts of A-171 silane coupling agent, 4.8 parts of auxiliary agent and 35 parts of pearl powder. Wherein 5 parts of auxiliary agent comprises 0.6 part of ethyl cellulose HBR250 thickener, 1.0 part of SN-5040 dispersing agent, 0.5 part of LCN 407 wetting agent, 0.6 part of NXZ defoamer, 0.8 part of ethanol, 0.8 part of OE300 and 0.5 part of antiseptic and mildew preventive (Dow US Tao Shiluo Harsi Rocima 631 antiseptic preservative).

step S1: preparing a premix solution, namely adding 3 parts of catalyst and 15 parts of silicone-acrylic emulsion into 10 parts of silica sol, stirring at 1000rpm for 12min to prepare the premix solution, and standing for later use;

step S2: adding 30 parts of water and a thickener into a container, and stirring for 4min at 600 rpm;

step S3: adding dispersant, wetting agent, defoamer, drier and film forming auxiliary agent, and stirring for 4min at 600 rpm;

step S4: adding the premix solution, and stirring at 600rpm for 4min;

step S5: adding 35 parts of pearl powder, and stirring for 20min at 1800rpm to obtain a mixed solution;

step S6: adding the rest 15 parts of silica sol and 15 parts of silicone-acrylic emulsion, reducing the rotating speed to 600rpm, and stirring for 5 minutes;

step S7: adding bactericide and antiseptic and mildew inhibitor to obtain the final product.

Example 3

The embodiment provides a high-hardness pollution-resistant pearlescent art paint, which comprises the following components in parts by weight: 20 parts of water, 10 parts of silica sol, 20 parts of silicone-acrylic emulsion, 1 part of A-171 silane coupling agent, 3.3 parts of auxiliary agent and 12 parts of pearl powder. Wherein 3.5 parts of auxiliary agent comprises 0.5 part of ethyl cellulose HBR250 thickener, 0.8 part of SN-5040 dispersing agent, 0.3 part of LCN 407 wetting agent, 0.3 part of NXZ defoamer, 0.2 part of ethanol, 1 part of OE300 and 0.2 part of BIT (blue peak auxiliary agent Co., buddha, 1, 2-benzisothiazolin-3-one, short for BIT preservative).

step S1: preparing a premix solution, namely adding 1 part of catalyst and 10 parts of silicone-acrylic emulsion into 4 parts of silica sol, stirring for 10min at 1200rpm to prepare the premix solution, and standing for later use;

step S2: 20 parts of water and 0.5 part of thickener are added into a container and stirred at 800rpm for 3min;

step S3: then adding 0.8 part of dispersing agent, 0.3 part of wetting agent, 0.3 part of defoamer, 0.2 part of drier and 1 part of film forming auxiliary agent, and stirring for 5min at 600 rpm;

step S4: adding the premix solution, and stirring at 500rpm for 3min;

step S5: adding 12 parts of pearl powder, and stirring at 1500rpm for 25min to obtain a mixed solution;

step S6: adding the rest 6 parts of silica sol and 10 parts of silicone-acrylic emulsion, reducing the rotating speed to 500rpm, and stirring for 5 minutes;

step S7: adding 0.2 part of antiseptic and mildew inhibitor to obtain the final product.

Comparative example 1

This comparative example differs from example 1 in that instead of separately preparing a premix solution, all of the silica sol, organic film forming material and catalyst were added at step S6 of example 1.

Comparative example 2

This comparative example differs from example 1 in that no catalyst was added to the premix solution, the remainder being unchanged.

Comparative example 3

The difference between this comparative example and example 1 is that no silica sol is added to the premix solution, and the remaining components, including the addition of the remaining silica sol, are unchanged.

Comparative example 4

This comparative example differs from example 1 in that the organic film-forming material in the premix solution was modified to a silicon-free film-forming material RS-998A (commercially available as a styrene-acrylic emulsion, available from the Bard Fu group).

Comparative example 5

The comparative example differs from example 1 in that no ethanol (drier) was added and the remainder was unchanged, and the resulting coating was as shown in FIG. 2.

Comparative example 6

The difference between this comparative example and example 1 is that no drier, catalyst or silica sol was added, the same amount of heavy calcium as the total amount of drier, catalyst or silica sol was added, and the rest was unchanged (this comparative example is a conventional method for increasing hardness in the market), and the resulting coating is shown in fig. 2.

In the present application, the respective index cases of the inorganic paints obtained in example 1 and comparative examples 1 to 5 are shown in table 1 below.

TABLE 1

As can be seen from Table 1, in example 1, compared with comparative example 1, the resulting paint sample was better than comparative example 1 in terms of hardness and water-fast color pen due to the formation of "gel", because the Si-O-of the silica sol and the Si-Si of the organic film-forming substance were first subjected to a crosslinking reaction under the condition of the catalyst to form a network skeleton gel structure in which silica Si-O-Si is linked, thereby enhancing the hardness of the paint film, and secondly, the "gel" enhanced the coating property of the emulsion to the pearl powder, thereby improving the stain resistance to some extent.

Compared with comparative example 2, the gel cannot be produced without adding the catalyst, the hardness of the paint film cannot be enhanced, and the coating performance of the organic film forming substance on the pearl powder cannot be enhanced, so that the performance is poor.

Compared with comparative example 3, although the catalyst was reacted with the organic film-forming substance first, the stain resistance was improved, but the hardness was not well established because of the absence of silica sol.

The strength of the "gel" formed was reduced due to the lack of Si element in the organic film-forming material, which resulted in reduced stain resistance and stain resistance, as compared to comparative example 4.

Compared with comparative example 5, the drying agent is reduced, and the water is volatilized too slowly, so that the time for the arrangement of the pearl powder in a disordered manner under the influence of the benard vortex is prolonged, the orientation is disordered, and the sunny and shady sides are weakened.

Compared with comparative example 6, the conventional solution can make the pearlescent negative and positive effect almost no, only slight negative and positive effect, and only a piece of weak trace compared with the common emulsion paint even like the repaired emulsion paint.

Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1,2, 3, 4, 5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The high-hardness stain-resistant pearlescent art paint is characterized by comprising the following components in parts by weight:

the auxiliary agent comprises a wetting agent, a dispersing agent, a defoaming agent, a thickening agent, a film forming auxiliary agent, a drier and an anti-corrosion and mildew-proof agent, wherein the drier is ethanol.

2. The high-hardness and stain-resistant pearlescent art coating of claim 1, comprising the following components in parts by weight:

3. The high hardness, stain resistant pearlescent art coating of claim 1 or 2, wherein the catalyst is a silane coupling agent and the organic film forming material is a silicone-acrylic emulsion.

4. The high-hardness, stain-resistant pearlescent art coating of claim 3, wherein the silica sol has a modulus of 50 or more and a particle size of 7 to 100nm.

5. The high-hardness and stain-resistant pearlescent art coating of claim 1, wherein the auxiliary comprises the following components in parts by weight: 0.2 to 0.6 part of wetting agent, 0.5 to 1.2 part of dispersing agent, 0.3 to 1.0 part of defoaming agent, 0.3 to 0.9 part of thickening agent, 0.5 to 1.5 part of film forming auxiliary agent, 0.5 to 1.5 part of drier, 0.1 to 0.3 part of bactericide and 0.2 to 0.5 part of antiseptic and mildew preventive.

6. The high-hardness, stain-resistant pearlescent art paint of claim 1, wherein the pearlescent powder is native mica or synthetic mica as a raw material.

7. A method for preparing the high-hardness and stain-resistant pearlescent art paint according to any one of claims 1 to 6, which is characterized by comprising the following steps:

8. The method for preparing a high-hardness, stain-resistant pearlescent art coating of claim 7, wherein the stirring speed in step (1) is 800-1200 rpm, and the stirring time is 10-15 min.

9. The method for preparing a high-hardness, stain-resistant pearlescent art coating of claim 7, wherein the stirring speed in step (2) and step (4) is 500-800 rpm, and the stirring time is 3-5 min.

10. The method for preparing the high-hardness and stain-resistant pearlescent art paint according to claim 7, wherein the stirring speed of adding the pearlescent powder in the step (3) is 1500-2000 rpm, and the stirring time is 15-25 min; the stirring speed of the premixed solution and the auxiliary solution is 500-800 rpm, and the stirring time is 3-5 min.