Bi-component high-gloss stain-resistant quick-drying type floor marking coating and preparation method thereof

Abstract

The invention belongs to the technical field of floor marking coatings, and particularly relates to a bi-component high-gloss stain-resistant quick-drying floor marking coating and a preparation method thereof. The bi-component high-gloss stain-resistant quick-drying floor marking coating comprises a component A and a component B. The component A comprises the following raw materials in parts by mass: 20-40 parts of acrylic resin, 5-15 parts of a dihydroxyl-terminated organosilicon oligomer, 5-15 parts of a pigment, 25-45 parts of a filler, 1-3 parts of an anti-settling dispersant and 10-20 parts of ethyl acetate. The component B is isocyanate; the acrylic resin comprises hydroxyl acrylic resin and thermoplastic acrylic resin containing hydroxyl; the filler at least comprises superfine polyamide powder. The bi-component high-gloss stain-resistant quick-drying floor marking coating provided by the invention has the advantages of quick drying, high gloss, stain resistance and steam jet resistance.

Description

Technical Field

[0001] This invention belongs to the field of floor marking paint technology, specifically relating to a two-component high-gloss, stain-resistant, and quick-drying floor marking paint and its preparation method. Background Technology

[0002] Floor markings can guide and regulate work areas and distinguish different functional areas, so they are widely used in workshops, warehouses, garages and other places.

[0003] In addition to requiring good adhesion to the floor, high gloss, and quick drying, floor marking paints also have higher performance requirements depending on the application scenario. In food production workshops, where steam jet cleaning and edible oil penetration are common, the floor marking paints used must also be resistant to stains and steam jets to prevent problems such as dirt and peeling off the markings.

[0004] Chinese Patent Publication No. CN112795253A discloses a single-component acrylic road marking paint and its preparation method. The paint provided by this technical solution comprises the following components in parts by weight: 30-50% first acrylic emulsion, 2-20% second acrylic emulsion, 0.1-0.2% cellulose, 0.5-1.0% dispersant, 0.1-0.3% magnesium aluminum silicate, 1.5-2.0 parts defoamer, and 0.8 parts functional additives. The composition includes: ~1.2%, titanium dioxide 10-15%, barium sulfate 5-15%, quartz powder 5-10%, leveling agent 0.5-1.0%, bactericide 0.1-0.2%, wetting agent 0.1-0.5%, film-forming aid 3-4%, diethanolbutyl ether 0.5-1.5%, scratch-resistant aid 0.1-0.5%, thickener 0.1-1.0%, and the balance being water; the first acrylic emulsion is T58 emulsion, and the second acrylic emulsion is D640 emulsion. This technical solution has good water resistance, alkali resistance, and high gloss, making it suitable for frequently used locations such as workshops and sports fields. However, the surface drying time of this technical solution is 1 hour, and the complete drying time is 24 hours, resulting in a relatively long construction time.

[0005] CN110577794A discloses a water-based floor marking coating and its preparation method. The water-based floor marking coating includes component A and component B. Component A comprises the following ingredients: 35-55 parts by weight of water-based polyurethane resin, 15-20 parts by weight of pigment, 15-25 parts by weight of filler, and 0.1-0.3 parts by weight of adhesion promoter. Component B comprises an isocyanate curing agent. This water-based floor marking coating, through component design and the interaction of each component in a specific ratio, achieves a good balance between activation period and curing speed. It is suitable for marking on floors such as workshops, underground garages, sports fields, and warehouses. After curing, the coating film has high crosslinking density, good appearance, and excellent substrate adhesion, flexibility, abrasion resistance, and impact resistance, providing durable marking functionality on floor surfaces. However, the abrasion resistance, water resistance, alkali resistance, and acid resistance of this technical solution are relatively poor. Furthermore, none of the above technical solutions address stain resistance and steam jet resistance. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the present invention provides a two-component high-gloss, stain-resistant, and quick-drying floor marking coating and its preparation method. The two-component high-gloss, stain-resistant, and quick-drying floor marking coating provided by the present invention has the advantages of quick drying, high gloss, stain resistance, and steam jet resistance.

[0007] The technical solution of the present invention is as follows:

[0008] A two-component, high-gloss, stain-resistant, quick-drying floor marking paint includes component A and component B. Component A comprises the following raw materials in parts by weight:

[0009] Acrylic resin 20-40 parts, double-hydroxyl-terminated organosilicon oligomer 5-15 parts, pigment 5-15 parts, filler 25-45 parts, anti-settling dispersant 1-3 parts, ethyl acetate 10-20 parts;

[0010] Component B is an isocyanate;

[0011] The acrylic resin includes hydroxyl acrylic resin and thermoplastic acrylic resin containing hydroxyl groups;

[0012] The filler includes at least ultrafine polyamide powder.

[0013] In the above technical solution, the acrylic resin includes hydroxyl acrylic resin and thermoplastic acrylic resin containing hydroxyl groups. By combining two different types of acrylic resin and a double-hydroxyl-terminated organosilicon oligomer, the drying speed of the coating can be adjusted while improving the toughness and impact resistance of the coating film. In addition, the double-hydroxyl-terminated organosilicon oligomer of the present invention can participate in the curing reaction. During the curing and drying process of the coating film, the hydrophobic organosilicon segments can migrate to the surface of the coating film, preventing the penetration of oil and water vapor.

[0014] Preferably, the mass ratio of component A to component B is 2-4:1.

[0015] Preferably, the mass ratio of the hydroxyl acrylic resin to the hydroxyl-containing thermoplastic acrylic resin is 2-3:1.

[0016] Preferably, the hydroxyl value of the hydroxyl acrylic resin is 90-110 mg KOH / g.

[0017] Preferably, the hydroxy acrylic resin is a hydroxy acrylic resin modified with glycidyl tert-carbonate.

[0018] In the above technical solution, the present invention uses a specific tert-butyl glycidyl ester modified hydroxyl acrylic resin, which is beneficial to improving the gloss, stain resistance and steam jet resistance of the coating film.

[0019] Preferably, the hydroxyl value of the thermoplastic acrylic resin containing hydroxyl groups is 30-40 mg KOH / g.

[0020] Preferably, the number-average molecular weight of the dual-hydroxyl-terminated organosilicon oligomer is 2000-4000.

[0021] Preferably, the filler may further include at least one of mica powder, talc powder, and heavy calcium carbonate.

[0022] Preferably, the filler is a mixture of ultrafine polyamide powder and mica powder.

[0023] Preferably, the mass ratio of the ultrafine polyamide powder to the mica powder is 1:3-5.

[0024] In the above technical solution, the present invention uses ultrafine polyamide powder and mica powder as fillers. The flake-shaped mica powder can form a superimposed physical barrier layer in the system, and the ultrafine polyamide powder fills the pores to make the coating film denser and improve its resistance to oil and water vapor penetration. At the same time, the hydrophobicity and flexibility of ultrafine polyamide powder and its hydrogen bonding with acrylic resin are used to further improve the coating film's stain resistance and steam jet resistance.

[0025] Preferably, the particle size of the ultrafine polyamide powder is 15-25µm.

[0026] Preferably, the mica powder has a mesh size of 1000-2000 mesh.

[0027] Preferably, the pigment includes, but is not limited to, at least one of titanium dioxide, iron oxide black, iron oxide red, and iron oxide yellow.

[0028] Preferably, the isocyanate is selected from at least one of aliphatic isocyanates, alicyclic isocyanates, aromatic isocyanates and their derivatives.

[0029] A method for preparing a two-component, high-gloss, stain-resistant, quick-drying floor marking paint includes the following steps:

[0030] Acrylic resin, dihydroxyl-terminated organosilicon oligomer, pigment, filler, anti-settling dispersant and ethyl acetate are thoroughly mixed in a mixer and ground to obtain component A; component A and component B are packaged separately.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The acrylic resin of the present invention includes hydroxyl acrylic resin, especially hydroxyl acrylic resin modified with glycidyl tert-carbonate and thermoplastic acrylic resin containing hydroxyl groups. By combining two different types of acrylic resin with a hydroxyl-terminated organosilicon oligomer, the drying speed of the coating can be adjusted while improving the toughness and impact resistance of the coating film. In addition, the hydroxyl-terminated organosilicon oligomer of the present invention can participate in the curing reaction. During the curing and drying process of the coating film, the hydrophobic organosilicon segments can migrate to the surface of the coating film, preventing the penetration of oil and water vapor.

[0033] 2. This invention uses ultrafine polyamide powder and mica powder as fillers. The flake-shaped mica powder can form an overlapping physical barrier layer in the system, and the ultrafine polyamide powder fills the pores, making the coating film denser and improving its resistance to oil and water vapor penetration. At the same time, the hydrophobicity and flexibility of the ultrafine polyamide powder, as well as its hydrogen bonding with acrylic resin, further improve the coating film's stain resistance and steam jet resistance.

[0034] 3. The two-component high-gloss, stain-resistant, and quick-drying floor marking coating provided by this invention has the advantages of quick drying, high gloss, stain resistance, and steam spray resistance. It is suitable not only for schools, offices, and general industrial plants, but also for food workshops. Attached Figure Description

[0035] Figure 1 The images show the physical components A and B of the two-component high-gloss, stain-resistant, quick-drying floor marking paint used in Example 3.

[0036] Figure 2 This is a photograph of the cured two-component high-gloss, stain-resistant, quick-drying floor marking paint of Example 3.

[0037] Figure 3 The results of testing for volatile organic compound content and formaldehyde release of the two-component high-gloss, stain-resistant, quick-drying floor marking paint of Example 3 are as follows:

[0038] Figure 4The drying time, abrasion resistance, tensile bond strength, impact resistance and water resistance test results of the two-component high-gloss stain-resistant quick-drying floor marking paint of Example 3 are shown below.

[0039] Figure 5 The chemical resistance, hardness, and heat resistance tire indentation test results of the two-component high-gloss stain-resistant quick-drying floor marking paint of Example 3 are shown.

[0040] Figure 6 The hiding power and gloss test results of the two-component high-gloss stain-resistant quick-drying floor marking paint of Example 3 are shown. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0042] Example 1

[0043] A two-component, high-gloss, stain-resistant, quick-drying floor marking paint includes component A and component B in a mass ratio of 3.2:1; wherein component A comprises the following raw materials in parts by mass:

[0044] 30 parts acrylic resin, 10 parts double-hydroxyl organosilicon oligomer, 10 parts pigment, 40 parts filler, 2 parts anti-settling dispersant, and 15 parts ethyl acetate.

[0045] Acrylic resins include hydroxyl acrylic resins in a mass ratio of 2:1 and thermoplastic acrylic resins containing hydroxyl groups.

[0046] The hydroxyl acrylic resin is a hydroxyl acrylic resin modified with glycidyl tert-carbonate, with a hydroxyl value of 100±2mgKOH / g. It is manufactured by Laiyang Hongan Chemical Co., Ltd., and its brand name is HU9170.

[0047] The hydroxyl value of the thermoplastic acrylic resin containing hydroxyl groups is 33 mg KOH / g. Nengda Chemical (Heshan) Co., Ltd., brand name: AC4022.

[0048] The number-average molecular weight of the hydroxyl-terminated organosilicon oligomer is 4000. Guangzhou Jusheng New Material Technology Co., Ltd., brand name: JS-2865.

[0049] The pigment is titanium dioxide with a particle size of 0.23µm, manufactured by Titanium Energy Chemical Co., Ltd., grade: R-2196+.

[0050] The filler is a mixture of ultrafine polyamide powder and mica powder in a mass ratio of 1:4.

[0051] The particle size of the ultrafine polyamide powder is 20±3µm. Shanghai Zhongsi Industrial Co., Ltd., 1002D.

[0052] The mica powder has a mesh size of 1250, is from Guangdong Yongfeng Chemical Co., Ltd., and its grade is ZR-B4.

[0053] The anti-settling dispersant is MA-30R from Guangzhou Shuangjian Trading Co., Ltd.

[0054] Component B is isocyanate, which is an HDI (hexamethylene diisocyanate) homopolymer (biuret structure), with an NCO content of 16.5% ± 0.5%. It is manufactured by Guangzhou Kosite New Materials Co., Ltd., and its brand name is Kosite YF-175.

[0055] The preparation method of the above-mentioned two-component high-gloss stain-resistant and quick-drying floor marking paint is as follows: acrylic resin, double-hydroxyl-terminated organosilicon oligomer, pigment, filler, anti-settling dispersant and ethyl acetate are thoroughly mixed in a mixer and ground to obtain component A; component A and component B are packaged separately.

[0056] Example 2

[0057] A two-component, high-gloss, stain-resistant, quick-drying floor marking paint includes component A and component B in a mass ratio of 3:1; wherein component A comprises the following raw materials in parts by mass:

[0058] 35 parts acrylic resin, 8 parts double-hydroxyl organosilicon oligomer, 12 parts pigment, 35 parts filler, 3 parts anti-settling dispersant, and 20 parts ethyl acetate.

[0059] Acrylic resins include hydroxyl acrylic resins in a mass ratio of 2:1 and thermoplastic acrylic resins containing hydroxyl groups.

[0060] The hydroxyl acrylic resin is a hydroxyl acrylic resin modified with glycidyl tert-carbonate, with a hydroxyl value of 100±2mgKOH / g. It is manufactured by Laiyang Hongan Chemical Co., Ltd., and its brand name is HU9170.

[0061] The hydroxyl value of the thermoplastic acrylic resin containing hydroxyl groups is 33 mg KOH / g. Nengda Chemical (Heshan) Co., Ltd., brand name: AC4022.

[0062] The number-average molecular weight of the hydroxyl-terminated organosilicon oligomer is 4000. Guangzhou Jusheng New Material Technology Co., Ltd., brand name: JS-2865.

[0063] The pigment is titanium dioxide with a particle size of 0.23µm, manufactured by Titanium Energy Chemical Co., Ltd., grade: R-2196+.

[0064] The filler is a mixture of ultrafine polyamide powder and mica powder in a mass ratio of 1:4.

[0065] The particle size of the ultrafine polyamide powder is 20±3µm. Shanghai Zhongsi Industrial Co., Ltd., 1002D.

[0066] The mica powder has a mesh size of 1250, is from Guangdong Yongfeng Chemical Co., Ltd., and its grade is ZR-B4.

[0067] The anti-settling dispersant is MA-30R from Guangzhou Shuangjian Trading Co., Ltd.

[0068] Component B is isocyanate, which is an HDI (hexamethylene diisocyanate) homopolymer (biuret structure), with an NCO content of 16.5% ± 0.5%. It is manufactured by Guangzhou Kosite New Materials Co., Ltd., and its brand name is Kosite YF-175.

[0069] The preparation method of the above-mentioned two-component high-gloss stain-resistant and quick-drying floor marking paint is as follows: acrylic resin, double-hydroxyl-terminated organosilicon oligomer, pigment, filler, anti-settling dispersant and ethyl acetate are thoroughly mixed in a mixer and ground to obtain component A; component A and component B are packaged separately.

[0070] Example 3

[0071] A two-component, high-gloss, stain-resistant, quick-drying floor marking paint includes component A and component B in a mass ratio of 3:1; wherein component A comprises the following raw materials in parts by mass:

[0072] 25 parts acrylic resin, 15 parts double-hydroxyl organosilicon oligomer, 8 parts pigment, 25 parts filler, 1.5 parts anti-settling dispersant, and 12 parts ethyl acetate.

[0073] Acrylic resins include hydroxyl acrylic resins in a mass ratio of 2:1 and thermoplastic acrylic resins containing hydroxyl groups.

[0074] The hydroxyl acrylic resin is a hydroxyl acrylic resin modified with glycidyl tert-carbonate, with a hydroxyl value of 100±2mgKOH / g. It is manufactured by Laiyang Hongan Chemical Co., Ltd., and its brand name is HU9170.

[0075] The hydroxyl value of the thermoplastic acrylic resin containing hydroxyl groups is 33 mg KOH / g. Nengda Chemical (Heshan) Co., Ltd., brand name: AC4022.

[0076] The number-average molecular weight of the hydroxyl-terminated organosilicon oligomer is 4000. Guangzhou Jusheng New Material Technology Co., Ltd., brand name: JS-2865.

[0077] The pigment is titanium dioxide with a particle size of 0.23µm, manufactured by Titanium Energy Chemical Co., Ltd., grade: R-2196+.

[0078] The filler is a mixture of ultrafine polyamide powder and mica powder in a mass ratio of 1:4.

[0079] The particle size of the ultrafine polyamide powder is 20±3µm. Shanghai Zhongsi Industrial Co., Ltd., 1002D.

[0080] The mica powder has a mesh size of 1250, is from Guangdong Yongfeng Chemical Co., Ltd., and its grade is ZR-B4.

[0081] The anti-settling dispersant is MA-30R from Guangzhou Shuangjian Trading Co., Ltd.

[0082] Component B is an isocyanate, which is an HDI (hexamethylene diisocyanate) homopolymer (biuret structure) with an NCO content of 16.5% ± 0.5%, manufactured by Guangzhou Kosite New Materials Co., Ltd., brand name: Kosite YF-175.

[0083] The preparation method of the above-mentioned two-component high-gloss stain-resistant and quick-drying floor marking paint is as follows: acrylic resin, double-hydroxyl-terminated organosilicon oligomer, pigment, filler, anti-settling dispersant and ethyl acetate are thoroughly mixed in a mixer and ground to obtain component A; component A and component B are packaged separately.

[0084] Physical images of components A and B are shown below. Figure 1 As shown.

[0085] Comparative Example 1: A two-component, high-gloss, stain-resistant, quick-drying floor marking paint

[0086] The only difference from Example 3 is that the acrylic resin is a hydroxyl acrylic resin; everything else is the same.

[0087] Comparative Example 2: A two-component, high-gloss, stain-resistant, quick-drying floor marking paint

[0088] The only difference from Example 3 is that the hydroxyl acrylic resin is a saturated polyester chemically grafted modified acrylic resin with a hydroxyl value of 105±5mgKOH / g, manufactured by Laiyang Hongan Chemical Co., Ltd., and grade: HU8375BW; all other aspects are the same.

[0089] Comparative Example 3: A two-component, high-gloss, stain-resistant, quick-drying floor marking paint

[0090] The only difference from Example 3 is that the dihydroxyl-terminated organosilicon oligomer is replaced with an equal mass of 1H,1H,2H,2H-perfluorooctyltriethoxysilane; all other aspects are the same.

[0091] Comparative Example 4: A two-component, high-gloss, stain-resistant, quick-drying floor marking paint

[0092] The only difference from Example 3 is that the filler is mica powder; everything else is the same.

[0093] Comparative Example 5: A two-component, high-gloss, stain-resistant, quick-drying floor marking paint

[0094] The only difference from Example 3 is that the mica powder is replaced with an equal mass of heavy calcium carbonate, which has a mesh size of 1250 and is produced by Guangdong Yongfeng Chemical Co., Ltd.; all other aspects are the same.

[0095] Comparative Example 6

[0096] The only difference from Example 3 is that the ultrafine polyamide powder is replaced with an equal mass of heavy calcium carbonate, which has a mesh size of 1250 and is sourced from Guangdong Yongfeng Chemical Co., Ltd.; all other aspects are the same.

[0097] Performance testing:

[0098] After thoroughly mixing components A and B of the two-component high-gloss, stain-resistant, quick-drying floor marking paint obtained in the above examples and comparative examples, the mixture was applied to the ground, with the coating thickness controlled at 2 mm. The cured product image of Example 3 is shown below. Figure 2 As shown, the following performance tests were performed:

[0099] (1) Surface drying time: GB / T 22374-2018;

[0100] (2) Gloss: GB / T 9754-2007;

[0101] (3) Stain resistance: Place 120mm×25mm yarn on the sample surface, soak the yarn with 5mL of ordinary edible oil, let it stand for 12h, remove the yarn, rinse with water, dry and test the reflection coefficient with a reflectometer. The average reflection coefficient of a test area after the staining test / the initial average reflection coefficient of the test area × 100% is used as the stain resistance evaluation data. The larger the value, the better the stain resistance.

[0102] (4) Resistance to steam jet: Angle between nozzle and sample surface: 90°, distance: 100mm; water pressure: 12MPa; flow rate: 15L / min; water temperature: 55℃; coating peeling area ≤5%, is considered qualified.

[0103] The specific test results are shown in Table 1:

[0104] Table 1. Performance test results of two-component high-gloss, stain-resistant, quick-drying floor marking coatings from Examples 1-3 and Comparative Examples 1-6.

[0105]

[0106] The table above shows that the floor marking coatings of Examples 1-3 have fast drying, high gloss, stain resistance, and steam jet resistance.

[0107] The difference between Comparative Example 1 and Example 3 is that there is no thermoplastic acrylic resin containing hydroxyl groups, and the drying time is significantly increased.

[0108] The difference between Comparative Example 2 and Example 3 is that the glycidyl tert-carbonate modified hydroxyl acrylic resin was replaced with saturated polyester chemically grafted modified acrylic resin, resulting in a decrease in steam jet resistance.

[0109] The difference between Comparative Example 3 and Example 3 is that the double-hydroxyl-terminated organosilicon oligomer was replaced with 1H,1H,2H,2H-perfluorooctyltriethoxysilane, resulting in a decrease in gloss, stain resistance and steam jet resistance.

[0110] The difference between Comparative Example 4 and Example 3 is that: there is no ultrafine polyamide powder, resulting in decreased stain resistance and steam jet resistance;

[0111] The difference between Comparative Example 5 and Example 3 is that mica powder was replaced with heavy calcium carbonate, which reduced the stain resistance and steam jet resistance.

[0112] The difference between Comparative Example 6 and Example 3 is that the ultrafine polyamide powder was replaced with heavy calcium carbonate, which reduced the stain resistance and steam jet resistance.

[0113] (5) The volatile organic compound content and formaldehyde emission of the two-component high-gloss, stain-resistant, quick-drying floor marking paint of Example 3 were tested. The test results are as follows: Figure 3 As shown.

[0114] (6) The drying time, abrasion resistance, tensile bond strength, impact resistance and water resistance of the two-component high-gloss stain-resistant quick-drying floor marking coating of Example 3 were tested. The test results are as follows: Figure 4 As shown.

[0115] (7) The chemical resistance, hardness, and heat resistance of the two-component high-gloss, stain-resistant, quick-drying floor marking paint of Example 3 were tested. The test results are as follows: Figure 5 As shown.

[0116] (8) The hiding power and gloss of the two-component high-gloss, stain-resistant, quick-drying floor marking paint of Example 3 were tested. The test results are as follows: Figure 6 As shown.

[0117] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A two-component, high-gloss, stain-resistant, quick-drying floor marking paint, characterized in that, It includes component A and component B, wherein component A comprises the following raw materials in parts by mass: Acrylic resin 20-40 parts, double-hydroxyl-terminated organosilicon oligomer 5-15 parts, pigment 5-15 parts, filler 25-45 parts, anti-settling dispersant 1-3 parts, ethyl acetate 10-20 parts; Component B is an isocyanate; The acrylic resin includes hydroxyl acrylic resin and thermoplastic acrylic resin containing hydroxyl groups; The filler includes at least ultrafine polyamide powder.

2. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 1, characterized in that, The hydroxyl value of the hydroxyl acrylic resin is 90-110 mgKOH / g.

3. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 2, characterized in that, The hydroxy acrylic resin is a hydroxy acrylic resin modified with glycidyl tert-carbonate.

4. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 1, characterized in that, The hydroxyl value of the thermoplastic acrylic resin containing hydroxyl groups is 30-40 mg KOH / g.

5. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 1, characterized in that, The number average molecular weight of the dual-hydroxyl-terminated organosilicon oligomer is 2000-4000.

6. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 1, characterized in that, The filler also includes at least one of mica powder, talc powder, and heavy calcium carbonate.

7. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 6, characterized in that, The filler is a mixture of ultrafine polyamide powder and mica powder; the mass ratio of ultrafine polyamide powder to mica powder is 1:3-5.

8. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 7, characterized in that, The ultrafine polyamide powder has a particle size of 15-25µm; the mica powder has a mesh size of 1000-2000 mesh.

9. The two-component high-gloss, stain-resistant, quick-drying floor marking coating according to claim 1, characterized in that, The isocyanate is selected from at least one of aliphatic isocyanates, alicyclic isocyanates, aromatic isocyanates and their derivatives.

10. The preparation method of the two-component high-gloss, stain-resistant, quick-drying floor marking paint according to any one of claims 1-9, characterized in that, Includes the following steps: Acrylic resin, dihydroxyl-terminated organosilicon oligomer, pigment, filler, anti-settling dispersant and ethyl acetate are thoroughly mixed in a mixer and ground to obtain component A; component A and component B are packaged separately.

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