High-adhesion wear-resistant anti-skid weather-resistant coating special for sports field and preparation method thereof

Abstract

The invention discloses a high-adhesion wear-resistant anti-skid weather-resistant coating special for a sports field and a preparation method of the coating. The special coating is prepared from 210 to 220 parts of acrylic emulsion, 120 to 130 parts of macromolecular nano rubber powder, 26 to 28 parts of propylene glycol, 1 to 2 parts of hydroxyethyl cellulose, 5 to 8 parts of hollow glass beads, 8 to 10 parts of nano aluminum oxide, 2 to 5 parts of modified silicon dioxide, 4 to 8 parts of zinc green, 1 to 2 parts of water-based bentonite, 2 to 3 parts of wetting agent, 2 to 3 parts of dimethyl silicone oil, 3 to 5 parts of polyether modified siloxane and 3 to 5 parts of flatting agent. 3-5 parts of a toughening agent and 2-3 parts of a microencapsulation repairing agent. The coating disclosed by the invention has relatively high adhesive force, excellent wear resistance, skid resistance, self-repairability, flame retardance and weather-resistant durability, and can be widely applied to different sports fields such as basketball courts and badminton courts.

Description

Technical Field

[0001] The invention belongs to the technical field of coatings, and in particular relates to a special coating for sports venues with high adhesion, wear resistance, anti-skid and weather resistance, and a preparation method thereof. Background Art

[0002] Currently, acrylic paints are widely used in sports field coatings. With the rapid development and continuous increase in the usage of acrylic paints, the performance requirements of various applications are becoming increasingly higher. Existing acrylic paints can meet the basic requirements of ball sports fields for coating performance to a certain extent, but there are still many shortcomings in the requirements for adhesion, wear resistance, weather resistance, anti-slip and other properties, which means that there is still a lot of room for modification of acrylic paints. A common solution is to add hard particles to modify the rigidity, strength and wear resistance. However, the addition of hard particles makes the toughness of the coating worse. Based on this, how to improve its adhesion, wear resistance, weather resistance and toughness while reducing costs and meeting the application requirements is an urgent problem that needs to be solved in the field of acrylic paints for sports fields. Summary of the Invention

[0003] In view of this, the present invention provides a special coating for sports venues with high adhesion, wear resistance, anti-skid and weather resistance. The special coating has high adhesion, excellent wear resistance, anti-skid, self-repairing, flame retardancy and weather resistance, and can be widely used in different sports venues such as basketball courts and badminton courts.

[0004] The present invention is achieved by the following technical solutions:

[0005] A special coating for sports venues with high adhesion, wear resistance, anti-skid and weather resistance comprises the following raw materials in parts by mass: 210-220 parts of acrylic emulsion, 120-130 parts of polymer nano-rubber powder, 26-28 parts of propylene glycol, 1-2 parts of hydroxyethyl cellulose, 5-8 parts of hollow glass microspheres, 8-10 parts of nano-alumina, 2-5 parts of modified silica, 4-8 parts of zinc green, 1-2 parts of water-based bentonite, 2-3 parts of wetting agent, 2-3 parts of dimethyl silicone oil, 3-5 parts of polyether-modified siloxane, 3-5 parts of leveling agent, 3-5 parts of toughening agent and 2-3 parts of microencapsulated repair agent.

[0006] Furthermore, the microencapsulated repair agent is a thiol-ene microcapsule with a particle size of 50-150 μm. The microencapsulated repair agent is applied to the coating formulation system, so that the coating can actively repair microcracks without external intervention during use, thereby extending the life of the material.

[0007] Furthermore, the preparation process of the modified silica is as follows: dispersing silica in an ethanol / water mixed solvent, then ultrasonically treating, adding 3-10% silane coupling agent of the silica dosage, adjusting the pH to 4-5, heating to 60-80°C, and stirring for 4-6 hours.

[0008] Furthermore, the wetting agent is Dow TRITON X-405 wetting agent, the leveling agent is an organic silicone leveling agent, and the toughening agent is a water-based polyurethane elastomer, which improves the impact resistance of the coating.

[0009] The present invention also provides a method for preparing a special coating, comprising the following steps:

[0010] S1: Add hydroxyethyl cellulose to propylene glycol in proportion by mass and pre-mix them. Then add hollow glass microspheres, nano-alumina, modified silica, water-based bentonite, wetting agent, dimethyl silicone oil, polymer nano-rubber powder, polyether-modified siloxane, leveling agent, toughening agent, and microencapsulated repair agent and stir to mix evenly. Then add silane coupling agent and acetone and ultrasonically disperse for 30-40 minutes to obtain a slurry.

[0011] S2: Add acrylic emulsion and zinc green to the slurry, filter for 10-15 minutes, and obtain the finished product.

[0012] Beneficial effects of the present invention:

[0013] The present invention uses polymer nano-rubber powder, hollow glass microspheres, nano-alumina, and modified silica to improve the wear resistance and anti-slip properties of the coating, which not only improves the wear resistance and anti-slip properties of the coating, but also improves the toughness and flame retardancy of the coating. In addition, under the joint action of other additives in the formula, the coating of the present invention has good weather resistance, excellent mechanical properties, good antibacterial properties, and good self-repairing properties.

[0014] The coating of the present invention is not easy to be stained with dust, is simple to maintain on a daily basis, and can effectively reduce costs; the coating of the present invention is widely applicable to sports venues such as tennis courts, basketball courts and badminton courts. DETAILED DESCRIPTION

[0015] In order to better understand the present invention, the content of the present invention is further described below through examples, but the present invention is not limited to the following examples, and the protection scope of the present invention is not limited thereto.

[0016] The materials involved in the following preparation process of the present invention are all commercially available, and the preparation methods are all conventional methods.

[0017] Example 1

[0018] The present embodiment provides a special coating for sports fields with high adhesion, wear resistance, anti-skid and weather resistance, including 214 parts of acrylic emulsion, 125 parts of polymer nano-rubber powder, 26 parts of propylene glycol, 1.6 parts of hydroxyethyl cellulose, 6 parts of hollow glass microspheres, 10 parts of nano-alumina, 4 parts of modified silica, 7 parts of zinc green, 1 part of water-based bentonite, 2 parts of wetting agent, 3 parts of dimethyl silicone oil, 3 parts of leveling agent, 4 parts of toughening agent, and 2 parts of microencapsulated repair agent.

[0019] The wetting agent is Dow TRITON X-405 wetting agent, the leveling agent is an organic silicone leveling agent, the toughening agent is a waterborne polyurethane elastomer, and the microencapsulated repair agent is a thiol-ene microcapsule with a particle size of 50-150 μm, preferably 60 μm.

[0020] The preparation process of modified silica is as follows: silica is dispersed in an ethanol / water mixed solvent, then ultrasonically dispersed for 30 minutes, 0.2 parts of KH560 are added, the pH is adjusted to 4-5, heated to 60-80°C, and stirred for reaction for 4-6 hours.

[0021] The preparation process of the above-mentioned special coating is as follows: hydroxyethyl cellulose is added to propylene glycol for premixing, and then hollow glass microspheres, nano-alumina, modified silica, water-based bentonite, wetting agent, dimethyl silicone oil, polymer nano-rubber powder, polyether-modified siloxane, leveling agent, toughening agent, and microencapsulated repair agent are added and stirred evenly, and then an appropriate amount of KH-550 and acetone are added, and ultrasonic dispersion is carried out for 30-40 minutes to obtain a slurry; acrylic emulsion and zinc green are added to the slurry, and the mixture is filtered for 10-15 minutes to obtain the finished product.

[0022] Example 2

[0023] The present embodiment provides a special coating for sports fields with high adhesion, wear resistance, anti-skid and weather resistance, including 210 parts of acrylic emulsion, 130 parts of polymer nano-rubber powder, 28 parts of propylene glycol, 1 part of hydroxyethyl cellulose, 6 parts of hollow glass microspheres, 9 parts of nano-alumina, 5 parts of modified silica, 4 parts of zinc green, 1 part of water-based bentonite, 2 parts of wetting agent, 3 parts of dimethyl silicone oil, 3 parts of leveling agent, 5 parts of toughening agent, and 3 parts of microencapsulated repair agent.

[0024] The preparation method of this embodiment is the same as that of Example 1, and the materials used are the same as those in Example 1, and the mass ratios are as described above to obtain the finished product of the present invention.

[0025] Example 3

[0026] The present embodiment provides a special coating for sports fields with high adhesion, wear resistance, anti-skid and weather resistance, including 220 parts of acrylic emulsion, 120 parts of polymer nano-rubber powder, 26 parts of propylene glycol, 2 parts of hydroxyethyl cellulose, 5 parts of hollow glass microspheres, 8 parts of nano-alumina, 2 parts of modified silica, 8 parts of zinc green, 2 parts of water-based bentonite, 3 parts of wetting agent, 2 parts of dimethyl silicone oil, 5 parts of leveling agent, 3 parts of toughening agent, and 3 parts of microencapsulated repair agent.

[0027] The preparation method of this embodiment is the same as that of Example 1, and the materials used are the same as those in Example 1, and the mass ratios are as described above to obtain the finished product of the present invention.

[0028] Example 4

[0029] This embodiment provides a high-adhesion, wear-resistant, anti-skid and weather-resistant special coating for sports venues, including 214 parts of acrylic emulsion, 125 parts of polymer nano-rubber powder, 26 parts of propylene glycol, 2 parts of hydroxyethyl cellulose, 6 parts of hollow glass microspheres, 10 parts of nano-alumina, 5 parts of modified silica, 6 parts of zinc green, 1 part of water-based bentonite, 2 parts of wetting agent, 3 parts of dimethyl silicone oil, 3 parts of leveling agent, and 5 parts of toughening agent.

[0030] The preparation method of this embodiment is the same as that of Example 1, and the materials used are the same as those in Example 1, and the mass ratios are as described above to obtain the finished product of the present invention.

[0031] The coatings obtained in Examples 1-4 above were subjected to performance tests: good anti-slip performance, with a friction coefficient of up to 5; good elasticity, not easy to crack, and a comfortable sense of movement; high heat resistance temperature, up to 300°C; good weather resistance, and no change in salt water resistance (sodium chloride solution with a mass concentration of 6%), salt spray resistance, and alkali resistance (sodium hydroxide solution with a mass concentration of 10%) tests after 320 hours.

[0032] The self-repairing performance of the coatings obtained in Examples 1-4 above was tested: the coatings in Examples 1-3 were able to repair scratches at room temperature with a repair efficiency of 70-80%, while having no significant effect on wear resistance.

[0033] The above descriptions are only some embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that any solutions obtained by equivalent substitutions and obvious changes made using the contents of the present invention specification should be included in the protection scope of the present invention.

Claims

1. A high-adhesion, wear-resistant, anti-skid and weather-resistant special coating for sports venues, characterized in that: The invention comprises the following raw materials in parts by mass: 210-220 parts of acrylic emulsion, 120-130 parts of polymer nano-rubber powder, 26-28 parts of propylene glycol, 1-2 parts of hydroxyethyl cellulose, 5-8 parts of hollow glass microspheres, 8-10 parts of nano-alumina, 2-5 parts of modified silica, 4-8 parts of zinc green, 1-2 parts of water-based bentonite, 2-3 parts of wetting agent, 2-3 parts of dimethyl silicone oil, 3-5 parts of polyether modified siloxane, 3-5 parts of leveling agent, 3-5 parts of toughening agent and 2-3 parts of microencapsulated repair agent.

2. The high-adhesion, wear-resistant, anti-skid and weather-resistant sports field coating according to claim 1, characterized in that: The microencapsulated repair agent is a thiol-ene microcapsule with a particle size of 50-150 μm.

3. The high-adhesion, wear-resistant, anti-skid and weather-resistant special coating for sports venues according to claim 1, characterized in that: The preparation process of the modified silica is as follows: dispersing silica in an ethanol / water mixed solvent, then performing ultrasonic treatment, adding 3-10% silane coupling agent based on the amount of silica used, adjusting the pH to 4-5, heating to 60-80° C., and stirring for reaction for 4-6 hours.

4. The high-adhesion, wear-resistant, anti-skid and weather-resistant special coating for sports venues according to claim 1, characterized in that: The wetting agent is Dow TRITON X-405 wetting agent, the leveling agent is an organic silicone leveling agent, and the toughening agent is a water-based polyurethane elastomer.

5. The method for preparing the special coating according to any one of claims 1 to 4, characterized in that: The steps include: S1: Add hydroxyethyl cellulose to propylene glycol in proportion by mass and pre-mix them. Then add hollow glass microspheres, nano-alumina, modified silica, water-based bentonite, wetting agent, dimethyl silicone oil, polymer nano-rubber powder, polyether-modified siloxane, leveling agent, toughening agent, and microencapsulated repair agent and stir to mix evenly. Then add silane coupling agent and acetone and ultrasonically disperse for 30-40 minutes to obtain a slurry. S2: Add acrylic acid emulsion and zinc green to the slurry, filter for 10-15 minutes, and obtain the finished product.