Floor paint, preparation method thereof and floor

Abstract

The invention relates to a floor paint, a preparation method thereof and a floor, and the floor paint is prepared from the following raw materials in parts by weight: 40-50 parts of polyurethane resin; 2 to 7 parts of a photoinitiator; 1-3 parts of a thixotropic agent; 0.1 to 0.3 part of a flatting agent; 10-25 parts of a wear-resistant filler; 5-15 parts of a metal light-sensitive filler; and 0.2 to 2 parts of nano cellulose. The nano cellulose is added into the floor paint, so that the dispersity of the metal light sensation filler and the wear-resistant filler can be effectively improved, the wear resistance is further improved, additives such as a dust-proof agent are not needed, a continuous protection layer is formed for the surface of a coated plate, and meanwhile, the metal sensation and the metal layering sense of the floor paint are improved.

Description

Technical Field

[0001] The invention relates to the technical field of flooring, in particular to a floor paint and a preparation method thereof and a flooring. Background Art

[0002] In order to give the furniture wood board surface excellent appearance, floor paint is generally attached to the surface of the furniture wood board, and a paint film is formed on the surface of the furniture wood board by spraying or other methods. Ordinary floor paint is usually used, and ordinary floor paint is monotonous in color and does not have the metallic luster effect like floor paint.

[0003] Metallic floor paints are currently mostly used on solid wood floors and are not suitable for plastic substrates with high softness. It is urgent for those skilled in the art to provide a floor paint suitable for plastic substrates. Summary of the invention

[0004] Based on this, it is necessary to provide a floor paint having a metallic luster and suitable for a plastic substrate, a preparation method thereof, and a floor.

[0005] To achieve the above object, the present invention provides a technical solution:

[0006] The first object of the present invention is to provide a floor paint, wherein the raw materials for preparing the floor paint include, by weight:

[0007]

[0008] Furthermore, the nanocellulose includes nanocellulose A and nanocellulose B, the aspect ratio of nanocellulose A is in the range of (10-800):1, and the aspect ratio of nanocellulose B is in the range of (800-2000):1.

[0009] Furthermore, the polyurethane resin includes silicone-modified polyurethane.

[0010] More specifically, silicone-modified polyurethane resin is a type of modified resin made from silicone oligomers (Japan's Nissin R-170S) and polyurethane resins. It is mostly used to prepare two-component polyurethane paints, can be cured at room temperature, and has improved heat resistance and weather resistance.

[0011] Furthermore, the wear-resistant filler includes at least one of silicon oxide, calcium carbonate and zirconium oxide.

[0012] Furthermore, the metal photosensitive filler includes at least one of mica titanium powder, aluminum powder, copper gold powder, lapis lazuli powder and red gold powder.

[0013] Furthermore, the particle size of the metal photosensitive filler is 250 mesh to 1500 mesh.

[0014] Further, the photoinitiator includes at least one of BASF IRGACURE 500, BASF TPO-L and IRGACURE1173.

[0015] Furthermore, the leveling agent includes at least one of BYK333, BYK381 and Deqian 457.

[0016] The second object of the present invention is to provide a method for preparing the floor paint of the first object, comprising the steps of:

[0017] The polyurethane resin, photoinitiator, thixotropic agent, leveling agent, wear-resistant filler, metal photosensitive filler and cellulose are mixed evenly, stirred and dispersed to obtain the floor paint.

[0018] The third object of the present invention is to provide a floor comprising the floor paint described in the first object of the present invention.

[0019] Beneficial effects of the present invention:

[0020] 1. The uniform dispersion of two types of nanocellulose A and nanocellulose B with high aspect ratio in the resin matrix is ​​beneficial to improving its high tensile strength and long-chain entanglement, while having a high aspect ratio, which helps to enhance the adhesion between resin molecules and reduce the slip between resin macromolecules, thereby improving the wear resistance of the coating resin.

[0021] 2. The hydrogen bonds between nanocellulose and polyurethane molecules lead to a strong network structure, which helps to improve the overall performance of the composite coating, enhance the binding force between polyurethane macromolecules, improve the mechanical properties of the coating film, and increase the thermal decomposition temperature of the coating due to the improvement of the binding force.

[0022] 3. The floor paint of the present invention has good transparency, which is very beneficial for retaining the texture of the floor surface and retaining the metallic light effect.

[0023] 4. The addition of nanocellulose to the floor paint of the present invention can effectively improve the dispersibility of the metallic light-sensitive filler and the wear-resistant filler, further improve the wear resistance, and form a continuous protective layer for the surface of the coated board without the need for additives such as dustproof agents, while improving the metallic feel and metallic layering of the floor paint. DETAILED DESCRIPTION

[0024] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0025] In the examples, the test methods used are conventional methods unless otherwise specified, and the materials, reagents, etc. used are all commercially available unless otherwise specified.

[0026] In some embodiments, a floor paint, in parts by weight, the raw materials for preparing the floor paint include:

[0027]

[0028] Specifically, the photoinitiator includes at least one of BASF IRGACURE 500, BASF TPO-L and IRGACURE1173.

[0029] The leveling agent includes at least one of BYK333, BYK381 and Deqian 457.

[0030] The thixotropic agent includes at least one of Lubrizol SOLTHIXA-200 and HF FX1010.

[0031] More specifically, polyurethane resin, photoinitiator, thixotropic agent, leveling agent and wear-resistant filler are all common ingredients in floor paint.

[0032] Polyurethane resins include silicone-modified polyurethanes. Silicone-modified polyurethane resins are a type of modified resin made from silicone oligomers (Japan Nissin R-170S) and polyurethane resins. They are thermoplastic compounds composed of diaminoethanes and have a variety of excellent properties. They are very suitable for the manufacture of floor paints. The addition of polyurethane resins can significantly improve the wear resistance, corrosion resistance and adhesion of floor paints. At the same time, polyurethane resins also have good elasticity and flexibility, and can deform to a certain extent when subjected to force, thereby reducing the impact of shock and vibration on the coating. Polyurethane resins can enhance the film-forming properties of floor paints, form a strong, wear-resistant film layer on the coating surface, and improve the durability and protective properties of the coating. Selecting the appropriate type of polyurethane resin according to the specific needs of the floor paint can meet the performance requirements of floor paints in different application scenarios.

[0033] In floor paint, photoinitiator acts as an initiator. After absorbing external energy, it undergoes chemical changes and decomposes into free radicals or cations, which then trigger the polymerization reaction between cross-linking monomers and photosensitive resins to form a solid film layer.

[0034] Thixotropic agents can make objects such as paints, inks, and adhesives exhibit reversible rheological properties. Under the action of external forces, such as during the brushing process, the viscosity of objects such as paints will decrease and become more fluid, making them easier to apply. After the external force disappears, they will return to their original viscous state. This property is crucial for improving the construction performance of the paint. Adding thixotropic agents to paints can not only improve the performance of the coating, but also meet construction requirements, so that the paint has a lower viscosity during the brushing process, making it easy to apply and evenly cover. In addition, thixotropic agents can also improve the emulsion properties of the paint, especially at low temperatures, improve the flow properties of the paint, and then increase the coverage and thickness of the paint. In summary, the role of thixotropic agents in floor paint is mainly to reduce the viscosity of the paint.

[0035] Leveling agent is a commonly used paint additive, which can help the paint form a flat, smooth and uniform coating during the drying process. It is a kind of substance that can effectively reduce the surface tension of the coating liquid and improve its leveling and uniformity. It can improve the permeability of the coating liquid, reduce the possibility of spots and marks when brushing, increase coverage, and make the film uniform and natural.

[0036] Wear-resistant fillers increase paint film thickness, improve wear resistance, durability and improve the mechanical strength of the paint film.

[0037] The uniform dispersion of two types of nanocellulose A and nanocellulose B with high aspect ratios in the resin matrix is ​​beneficial to improving its high tensile strength and long-chain entanglement, while having a high aspect ratio, which helps to enhance the adhesion between resin molecules and reduce the slip between resin macromolecules, thereby improving the wear resistance of the coating resin.

[0038] The hydrogen bonds between nanocellulose and polyurethane molecules lead to a strong network structure, which helps to improve the overall performance of the composite coating, enhance the binding force between polyurethane macromolecules, improve the mechanical properties of the coating film, and increase the thermal decomposition temperature of the coating due to the improved binding force.

[0039] The floor paint of the present invention has good transparency, which is very beneficial for retaining the texture of the floor surface and retaining the metallic light effect.

[0040] The invention adds nanocellulose to the floor paint to effectively improve the dispersibility of metallic light-sensitive fillers and wear-resistant fillers, further improve the wear resistance, and form a continuous protective layer for the surface of the coated board without the need for additives such as dustproof agents, while improving the metallic feel and metallic layering of the paint floor paint.

[0041] In some embodiments, the raw materials for preparing the floor paint include, by weight:

[0042]

[0043] Plastic sheets in the prior art, such as LVT (Luxury Vinyl Tile), are very soft, and the floor paint on the surface is easy to fall off or there are signs of breakage on the surface. The addition of cellulose causes the hydrogen bonds between nanocellulose and the resin macromolecular chains to dynamically slip during the bending deformation of the floor; that is, during the continuous bending deformation process, the dynamic combination and breakage between nanocellulose and the resin chain produces an "adaptive structure" that dynamically maintains the binding force between the resin molecules. Therefore, nanocellulose significantly improves the coating's bending fatigue resistance.

[0044] In some embodiments, the nanocellulose includes nanocellulose A and nanocellulose B, the aspect ratio of nanocellulose A is in the range of (10-800): 1, and the aspect ratio of nanocellulose B is in the range of (800-2000): 1. Nanocellulose A and nanocellulose B are provided with two different aspect ratios, so that the stacking and supporting effects of nanocellulose in the floor paint are better, which is beneficial for the metal light-sensitive filler to show a sense of hierarchy after the floor paint is cured, and at the same time improves the mechanical properties of the floor paint. Specifically, nanocellulose A includes cellulose nanocrystals (CNC) or cellulose nanofibers (CNF), and nanocellulose B includes cellulose nanocrystals (CNC) or cellulose nanofibers (CNF). More specifically, in parts by weight, nanocellulose includes:

[0045] Nanocellulose A 0.18-0.3 parts;

[0046] Nanocellulose B 0.12-0.2 parts;

[0047] In some embodiments, the polyurethane resin includes silicone-modified polyurethane.

[0048] In some embodiments, the wear-resistant filler includes at least one of silicon oxide, calcium carbonate, and zirconium oxide.

[0049] In some embodiments, the metal photosensitive filler includes at least one of mica titanium powder, aluminum powder, copper gold powder, lapis lazuli powder and red gold powder.

[0050] In some embodiments, the particle size of the metallic light-sensitive filler is 250 mesh to 1500 mesh. Specifically, due to the uneven distribution of larger filler particles, uneven reflection may occur on the floor surface, forming bright spots or dark areas. Visually, the glossiness is inconsistent, affecting the overall appearance. If the filler particle size is too small, the light reflection ability will be reduced, resulting in the metallic gloss of the floor not being obvious. Although fine particles can bring a delicate matte effect, if the particle size is too small, the expected light or metallic texture effect may not be achieved.

[0051] In some embodiments, a method for preparing floor paint comprises the steps of:

[0052] The polyurethane resin, the photoinitiator, the thixotropic agent, the leveling agent, the wear-resistant filler, the metal photosensitive filler and the cellulose are uniformly mixed and dispersed by stirring to obtain the floor paint.

[0053] In some embodiments, a floor comprises the floor paint according to the first aspect of the present invention.

[0054] Example

[0055] The raw material proportions of Examples 1 to 3 and Comparative Examples 1 to 7 are shown in Table 1. The polyurethane resin, photoinitiator, thixotropic agent, leveling agent, wear-resistant filler, metallic photosensitive filler and cellulose are uniformly mixed and stirred to obtain the floor paint.

[0056] Table 1 Raw materials of each embodiment and comparative example

[0057]

[0058] Except for the different data parameters in the table, other conditions of Examples 1 to 3 and Comparative Examples 1 to 7 are the same. The aspect ratio of nanocellulose A is in the range of (10 to 800):1, and the aspect ratio of nanocellulose B is in the range of (800 to 2000):1;

[0059] The wear-resistant filler is silicon trioxide;

[0060] The metal photosensitive filler is mica titanium powder, and the particle size is 250 mesh to 1500 mesh;

[0061] The photoinitiator was BASF IRGACURE 500;

[0062] The leveling agent is BYK333;

[0063] The thixotropic agent is Lubrizol SOLTHIXA-200;

[0064] Polyurethane resin is silicone-modified polyurethane, which is a type of modified resin made from silicone oligomer (Japanese Nissin R-170S) and polyurethane resin.

[0065] Performance Testing

[0066] The floor paints prepared in Examples 1 to 3 and Comparative Examples 1 to 7 were subjected to performance tests, wherein the wear resistance and metallic glossiness of the floor castor chair test were tested by making floors made of the floor paints of Examples 1 to 3 and Comparative Examples 1 to 7 (the preparation of the floors was the same except for the floor paints). The remaining test methods and standards were all for testing floor paints. The test results are shown in Table 2.

[0067] Table 2 Performance test results

[0068]

[0069] From the data of Examples 1 to 3 and Comparative Examples 5 to 7 in Table 2, it can be seen that adding a small amount of cellulose has little effect on the transparency of the floor paint, while excessive addition of nanocellulose causes turbidity in the floor paint.

[0070] It can be seen from the data of Examples 1 to 3 and Comparative Examples 1 to 4 in Table 2 that after adding nanocellulose, the tensile strength and bending properties of the paint film of the metallic glossy floor of the present invention are increased, and the wear resistance of the floor is excellent.

[0071] It should be noted that the specific parameters or some reagents in the above embodiments are specific embodiments or preferred embodiments of the present invention, rather than limiting the present invention; those skilled in the art can make adaptive adjustments within the scope of the present invention.

Claims

1. A floor paint, It is characterized in that The raw materials for preparing the floor paint include, by weight:

2. The floor paint according to claim 1, It is characterized in that The nanocellulose comprises nanocellulose A and nanocellulose B. The aspect ratio of nanocellulose A is in the range of (10-800):1, and the aspect ratio of nanocellulose B is in the range of (800-2000):

1.

3. The floor paint according to claim 1, It is characterized in that The polyurethane resin includes silicone-modified polyurethane.

4. The floor paint according to claim 1, It is characterized in that The wear-resistant filler includes at least one of silicon oxide, calcium carbonate and zirconium oxide.

5. The floor paint according to claim 1, It is characterized in that The metal photosensitive filler includes at least one of mica titanium powder, aluminum powder, copper gold powder, lapis lazuli powder and red gold powder.

6. The floor paint according to claim 1, It is characterized in that The particle size of the metal photosensitive filler is 250 meshes to 1500 meshes.

7. The floor paint according to claim 1, It is characterized in that The photoinitiator includes at least one of BASF IRGACURE 500, BASF TPO-L and IRGACURE1173.

8. The floor paint according to claim 1, It is characterized in that The leveling agent includes at least one of BYK333, BYK381 and Deqian 457.

9. A method for preparing the floor paint according to any one of claims 1 to 8, It is characterized in that Includes steps: The polyurethane resin, photoinitiator, thixotropic agent, leveling agent, wear-resistant filler, metal photosensitive filler and cellulose are uniformly mixed, stirred and dispersed to obtain the floor paint.

10. A floor comprising the floor paint according to any one of claims 1 to 8.

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