Antiskid powder coating composition and coating thereof

Abstract

The invention discloses an anti-skid powder coating composition and a coating thereof. The anti-skid powder coating composition comprises thermosetting resin, a curing agent and a high-hardness filler, the high-hardness filler comprises a composition of a plurality of inorganic materials, and the high-hardness filler at least comprises SiO2, AL2O3 and CaO; the powder coating obtained by the invention is sprayed and cured to obtain a coating with excellent anti-skid performance, is especially suitable for being used as an anti-skid coating of a metal floor, and realizes a good coating protection effect on the metal floor (especially an aluminum metal floor).

Description

[0001] This invention belongs to the field of powder coatings, and specifically relates to an anti-slip powder coating composition and its coating. Background Technology

[0002] Thermosetting powder coatings are widely used to replace oil-based and water-based paints for protective and decorative purposes on products in various fields due to their advantages such as being environmentally friendly, energy-efficient, easy to apply, and having little to no VOC emissions. In particular, in some specific fields, in addition to meeting basic coating performance requirements, powder coatings also need to have good anti-slip properties (e.g., when applied to the protection of metal floors). However, existing powder coating products do not yet include anti-slip powder coatings that can be directly applied to metal floors.

[0003] Therefore, the applicant hopes to conduct research and development to solve the aforementioned technical problems. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an anti-slip powder coating composition and its coating, wherein the obtained powder coating, after being sprayed and cured, yields a coating with excellent anti-slip properties, which is particularly suitable as an anti-slip coating for metal floors, thereby achieving a good coating protection effect on metal floors (especially aluminum metal floors).

[0005] The technical solution adopted in this invention is as follows: An anti-slip powder coating composition includes a thermosetting resin, a curing agent, and a high-hardness filler; the high-hardness filler comprises a composition of various inorganic materials, wherein the high-hardness filler includes at least SiO2, Al2O3, and CaO.

[0006] Preferably, based on the high-hardness filler being 100% by mass, the mass percentage of SiO2 is 55-65%, the mass percentage of Al2O3 is 12-18%, and the mass percentage of CaO is 20-28%; more preferably, the mass percentage of SiO2 is 60-65%, the mass percentage of Al2O3 is 15-18%, and the mass percentage of CaO is 20-23%.

[0007] Preferably, the high-hardness filler further includes Fe2O3, MgO and B2O3; wherein Fe2O3≤0.4%, MgO≤3%, and B2O3≤1%.

[0008] Preferably, based on a 100% mass ratio of the anti-slip powder coating composition, the thermosetting resin accounts for 55-90% of the mass ratio of the anti-slip powder coating composition, more preferably 65-85%, and even more preferably 65-70%; the high-hardness filler accounts for 8-40% of the mass ratio of the anti-slip powder coating composition, more preferably 10-25%, and even more preferably 10-15%.

[0009] Preferably, the high-hardness filler has a D50 particle size range of 0.5-50 µm; and / or its D10 particle size range of 0.01-10 µm; and / or its D90 particle size range of 20-50 µm.

[0010] Preferably, the high-hardness filler is a hydrophobic filler with an oil absorption capacity of 22.0±5.0 g / ml.

[0011] Preferably, the thermosetting resin is any one or a mixture of epoxy resin, polyester resin, acrylic resin and fluorocarbon resin.

[0012] Preferably, the thermosetting resin is a polyester resin; wherein the polyester resin has a viscosity of not less than 5000 mPa·s at 200°C, an acid value range of 25-45 mg KOH / g, and a glass transition temperature of not less than 62°C.

[0013] Preferably, the anti-slip powder coating composition further includes leveling agents and / or degassing agents and / or pigments and / or fillers.

[0014] Preferably, an anti-slip coating is obtained by electrostatic spraying and curing the anti-slip powder coating composition as described above on a substrate.

[0015] It should be noted that the viscosity value testing standard involved in this application is based on ASTM D 4287-1994, and the testing equipment used can be a standard commercial cone-plate viscometer (e.g., an ICI cone-plate viscometer (CONE & PLATE), brand name Brookfield CAP 2000 VISCOMETER); the acid value testing standard is based on ISO 3682-1998; the glass transition temperature testing standard is based on ISO 11357-2-2013; and the D10, D50, and D90 particle size data are obtained by particle size distribution testing using laser diffraction (e.g., using a Malvern Particle Size Analyzer 2000), based on the testing standard ISO 13320-2009.

[0016] This application first proposes a resin curing system using thermosetting resin and curing agent, and then compounding specific high-hardness fillers. The resulting powder coating, after spraying and curing, produces a coating with excellent anti-slip properties, which is especially suitable as an anti-slip coating for metal floors, achieving a good coating protection effect for metal floors (especially aluminum metal floors). Detailed Implementation

[0017] This application provides an anti-slip powder coating composition comprising a thermosetting resin, a curing agent, and a high-hardness filler; the high-hardness filler comprises a composition of various inorganic materials, wherein the high-hardness filler includes at least SiO2, Al2O3, and CaO.

[0018] Preferably, in this embodiment, based on a 100% mass ratio of high-hardness filler, the mass percentage of SiO2 is 55-65%, the mass percentage of Al2O3 is 12-18%, and the mass percentage of CaO is 20-28%; more preferably, the mass percentage of SiO2 is 60-65%, the mass percentage of Al2O3 is 15-18%, and the mass percentage of CaO is 20-23%; even more preferably, in this embodiment, the high-hardness filler further includes Fe2O3, MgO, and B2O3; wherein Fe2O3 ≤ 0.4%, MgO ≤ 3%, and B2O3 ≤ 1%.

[0019] Preferably, in this embodiment, the D50 particle size range of the high hardness filler is 0.5-50µm, more preferably 15-45µm; and / or its D10 particle size range is 0.01-10µm; and / or its D90 particle size range is 20-50µm; preferably, in this embodiment, the high hardness filler is a hydrophobic filler with an oil absorption capacity of 22.0±5.0g / ml.

[0020] Preferably, in this embodiment, based on a 100% mass ratio of the anti-slip powder coating composition, the thermosetting resin accounts for 55-90% of the mass ratio of the anti-slip powder coating composition, preferably 65-85%, more preferably 65-70%; and the high-hardness filler accounts for 8-40% of the mass ratio of the anti-slip powder coating composition, preferably 10-25%, more preferably 10-15%.

[0021] Preferably, in this embodiment, the thermosetting resin is any one or a mixture of epoxy resin, polyester resin, acrylic resin, and fluorocarbon resin; more preferably, considering both raw material costs and ensuring basic weather resistance, in this embodiment, the thermosetting resin is polyester resin, wherein the polyester resin has a viscosity of not less than 5000 mPa·s at 200°C, an acid value range of 25-45 mg KOH / g, and a glass transition temperature of not less than 62°C; preferably, in this embodiment, the curing agent can be any known curing agent of thermosetting resin, and this embodiment does not impose any particular limitation.

[0022] Preferably, in this embodiment, the anti-slip powder coating composition further includes a leveling agent and / or a degassing agent and / or pigments and / or fillers.

[0023] All the raw materials involved in this application can be purchased directly on the market, and the source of raw materials is easy to obtain.

[0024] In specific implementations of this application, it is also possible to add known leveling agents, degassing agents, antioxidants, dispersants, fillers, pigments, stabilizers, curing accelerators, functional additives and / or other additives to the powder coating composition. These are all conventional technical choices for those skilled in the art. Specifically, fillers and / or pigments can be, for example, carbon black, aluminum hydroxide, barium sulfate, TiO2, etc.

[0025] In preparing the powder coating composition of this application, any known preparation process can be used. Preferably, in this embodiment, the powder coating composition is obtained by mixing, melt extrusion, and crushing. Of course, other known preparation processes can also be used to obtain the powder coating composition of this embodiment. This application does not have any particular limitation on its preparation process.

[0026] This embodiment also proposes an anti-slip coating, which is obtained by electrostatic spraying and curing the anti-slip powder coating composition as described above on a substrate; preferably, in this embodiment, the metal base plate is an aluminum metal floor.

[0027] Preferably, in this embodiment, the anti-slip coating meets the anti-slip test requirements of slider 55 and slider 96 in EN 16165:2021.

[0028] To verify the technical effects of this application, the following sets of embodiments were specifically tested and compared as raw materials for powder coating composition formulations: Example 1: An anti-slip powder coating composition, with the raw materials prepared according to Table 1 below: Table 1 Formulation table of the powder coating composition in Example 1

[0029]

[0030] The anti-slip powder coating composition of Example 1 is obtained by mixing all the above raw materials together, performing one-time melt extrusion and crushing.

[0031] Example 2: The remaining technical solutions of Example 2 are the same as those of Example 1, except that in Example 2, the weight parts of the ultra-weather-resistant polyester resin are increased to 70 parts and the weight parts of barium sulfate are reduced to 9 parts.

[0032] Example 3: The remaining technical solutions of Example 3 are the same as those of Example 1, except that in Example 3, the weight of the ultra-weather-resistant polyester resin is reduced to 60 parts and the weight of barium sulfate is increased to 19 parts.

[0033] Example 4: The remaining technical solutions of Example 4 are the same as those of Example 1, except that in Example 4, the weight of the ultra-weather-resistant polyester resin is reduced to 55 parts and the weight of barium sulfate is increased to 24 parts.

[0034] Example 5: The remaining technical solutions of Example 5 are the same as those of Example 1, except that in Example 5, the weight of the high-hardness filler is increased to 15 parts and the weight of barium sulfate is reduced to 11 parts.

[0035] Example 6: The remaining technical solutions of Example 6 are the same as those of Example 1, except that in Example 6, the weight of the high hardness filler is increased to 20 parts and the weight of barium sulfate is reduced to 6 parts.

[0036] Example 7: The remaining technical solutions of Example 7 are the same as those of Example 1, except that in Example 7, the weight of the high-hardness filler is reduced to 10 parts and the weight of barium sulfate is increased to 16 parts.

[0037] Example 8: The remaining technical solutions of Example 8 are the same as those of Example 1, except that in Example 8, the weight of the high-hardness filler is reduced to 8 parts and the weight of barium sulfate is increased to 18 parts.

[0038] Example 9: The remaining technical solutions of Example 9 are the same as those of Example 1, except that in Example 9, the weight of the high-hardness filler is reduced to 5 parts and the weight of barium sulfate is increased to 21 parts.

[0039] Example 10: The remaining technical solutions of Example 10 are the same as those of Example 1, except that in Example 10, the weight of the high hardness filler is reduced to 2 parts and the weight of barium sulfate is increased to 24 parts.

[0040] Example 11: The remaining technical solutions of Example 11 are the same as those of Example 1. The difference is that in Example 11, the super weather-resistant polyester resin grade in Example 1 is replaced with polyester resin TM5013 provided by Zhejiang Chuanhua Tiansong, which has an acid value range of 75-85 mgKOH / g and a viscosity of 500-2000 mPa.s at 200℃.

[0041] Example 12: An anti-slip powder coating composition, with the raw materials prepared according to Table 2 below: Table 2 Formulation table of the powder coating composition in Example 12

[0042]

[0043] The anti-slip powder coating composition of Example 12 is obtained by mixing all the above raw materials together, performing one-time melt extrusion and crushing.

[0044] Example 13: An anti-slip powder coating composition, with the raw materials prepared according to Table 3 below: Table 3 Formulation table of the powder coating composition in Example 13

[0045]

[0046] The anti-slip powder coating composition of Example 13 is obtained by mixing all the above raw materials together, performing one-time melt extrusion and crushing.

[0047] Comparative Example 1: The remaining technical solutions of Comparative Example 1 are the same as those of Example 1, except that in Comparative Example 1, the weight parts of the high hardness filler are reduced to 0 parts, and the weight parts of barium sulfate are increased to 26 parts.

[0048] Comparative Example 2: The remaining technical solutions of Comparative Example 2 are the same as those of Example 1, except that in Comparative Example 2, the high hardness filler is replaced with silica, specifically SAC S-SIL C301, which has a D90 particle size of 35.1µm and a D50 particle size range of 13.7µm.

[0049] Comparative Example 3: The remaining technical solutions of Comparative Example 3 are the same as those of Example 1, except that in Comparative Example 3, the high hardness filler is replaced with titanium dioxide.

[0050] According to the implementation schemes proposed in Examples 1-13 and Comparative Examples 1-3 above, the corresponding powder coating compositions were obtained by referring to the preparation process described in Example 1.

[0051] The powder coating compositions prepared in Examples 1-13 and Comparative Examples 1-3 were used respectively. The same aluminum plate was selected as the substrate, and each powder coating composition was cured by baking and heating. The heating temperature was 200°C and the heating time was 10 minutes. Cured coatings (thickness range controlled between 60-80 micrometers) were obtained respectively. The performance of each cured coating was then tested, and the test results are shown in Table 4 below.

[0052]

[0053] It should be noted that the performance tests involved in this embodiment or comparative example were conducted in accordance with the test standards or conditions described in Table 5 below.

[0054]

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No markings in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A non-slip powder coating composition, characterized in that, It includes thermosetting resin, curing agent and high-hardness filler; the high-hardness filler includes a composition of various inorganic materials, wherein the high-hardness filler includes at least SiO2, Al2O3 and CaO.

2. The anti-slip powder coating composition according to claim 1, characterized in that, Based on the high-hardness filler being 100% by mass, the mass percentage of SiO2 is 55-65%, the mass percentage of Al2O3 is 12-18%, and the mass percentage of CaO is 20-28%; more preferably, the mass percentage of SiO2 is 60-65%, the mass percentage of Al2O3 is 15-18%, and the mass percentage of CaO is 20-23%.

3. The anti-slip powder coating composition according to claim 2, characterized in that, The high-hardness filler also includes Fe2O3, MgO and B2O3; Among them, Fe2O3≤0.4%, MgO≤3%, B2O3≤1%.

4. The anti-slip powder coating composition according to claim 1 or 3, characterized in that, Based on a 100% mass ratio of the anti-slip powder coating composition, the thermosetting resin accounts for 55-90% of the mass ratio of the anti-slip powder coating composition, preferably 65-85%, and more preferably 65-70%; the high-hardness filler accounts for 8-40% of the mass ratio of the anti-slip powder coating composition, preferably 10-25%, and more preferably 10-15%.

5. The anti-slip powder coating composition according to claim 1, characterized in that, The high-hardness filler has a D50 particle size range of 0.5-50 µm; and / or a D10 particle size range of 0.01-10 µm; and / or a D90 particle size range of 20-50 µm.

6. The anti-slip powder coating composition according to claim 1, characterized in that, The high-hardness filler is a hydrophobic filler with an oil absorption capacity of 22.0±5.0 g / ml.

7. The anti-slip powder coating composition according to claim 1, characterized in that, The thermosetting resin is any one or a mixture of epoxy resin, polyester resin, acrylic resin and fluorocarbon resin.

8. The anti-slip powder coating composition according to claim 7, characterized in that, The thermosetting resin is a polyester resin; wherein the polyester resin has a viscosity of not less than 5000 mPa.s at 200°C, an acid value range of 25-45 mg KOH / g, and a glass transition temperature of not less than 62°C.

9. The anti-slip powder coating composition according to claim 1, characterized in that, The anti-slip powder coating composition further includes leveling agents and / or degassing agents and / or pigments and / or fillers.

10. An anti-slip coating, characterized in that, The anti-slip powder coating composition as described in any one of claims 1-9 is obtained by electrostatic spraying and curing on a substrate.

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