A coating for sports floor and preparation method thereof

Abstract

The present invention relates to the field of coating technology, and discloses a coating for sports floors and its preparation method. The coating for sports floors comprises the following raw materials in parts by weight: 70-80 parts of a polyurethane acrylate UV light-curing resin, 5-15 parts of m-diphenylamine, 0.5-1.2 parts of a thickener, 0.3-0.6 parts of a defoamer, 1-2 parts of a substrate wetting agent, 0.2-0.5 parts of a leveling agent, 1.5-2.5 parts of a photoinitiator, 3-6 parts of a film-forming aid, and 5-13 parts of water. This technical solution addresses the poor stain and wear resistance of existing sports floor coatings.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, and in particular to a coating for sports floors and a preparation method thereof. Background Art

[0002] PVC (polyvinyl chloride) sports flooring is a type of sports flooring specifically developed for sports venues using polyvinyl chloride (PVC) materials. PVC and copolymer resins are used as the primary raw materials, optimized with fillers, stabilizers, plasticizers, colorants, and other auxiliary materials. It boasts environmentally friendly properties, exceptional wear resistance, anti-slip properties, high elasticity, impact resistance, and ultra-lightness and thinness, making it a popular choice for a wide range of applications.

[0003] Currently, most PVC sports flooring surfaces are untreated, leaving room for improvement in stain resistance, wear resistance, and scratch resistance. To address this issue, a coating has been developed that meets the specific stain and wear resistance requirements of PVC sports flooring. However, the stain and wear resistance of existing sports floor coatings still needs to be further improved. Summary of the Invention

[0004] The present invention provides a coating for sports floors and a preparation method thereof, which solves the problem of poor stain resistance and wear resistance of coatings for sports floors in the related art.

[0005] The technical solutions of the present invention are as follows:

[0006] A coating for sports floors comprises the following raw materials in parts by mass: 70-80 parts of polyurethane acrylate UV light-curing resin, 5-15 parts of m-diphenylamine, 0.5-1.2 parts of a thickener, 0.3-0.6 parts of a defoamer, 1-2 parts of a substrate wetting agent, 0.2-0.5 parts of a leveling agent, 1.5-2.5 parts of a photoinitiator, 3-6 parts of a film-forming aid, and 5-13 parts of water.

[0007] As a further technical solution, the mass ratio of the polyurethane acrylate UV light-curing resin to m-diphenylamine is 7-8:1.

[0008] As a further technical solution, the thickener is a polyurethane associative thickener.

[0009] As a further technical solution, the defoaming agent includes one or both of defoaming agent A-10 and defoaming agent BYK-024.

[0010] As a further technical solution, the substrate wetting agent includes one or both of substrate wetting agent BYK349 ​​and substrate wetting agent RW-5211.

[0011] As a further technical solution, the leveling agent includes one or both of leveling agent BYK3550 and leveling agent BYK3510.

[0012] As a further technical solution, the photoinitiator includes one or both of photoinitiator BASF 1173 and photoinitiator BASF184.

[0013] As a further technical solution, the film-forming aid includes one or both of dipropylene glycol methyl ether and propylene glycol methyl ether.

[0014] As a further technical solution, the invention further comprises 3 to 8 parts of 3-n-butyl-2,4-pentanedione.

[0015] As a further technical solution, the mass ratio of m-diphenylamine to 3-n-butyl-2,4-pentanedione is 2:1.

[0016] The present invention also proposes a method for preparing a coating for sports floors, comprising the following steps: uniformly mixing polyurethane acrylate UV light-curing resin with the remaining raw materials except a photoinitiator, then adding the photoinitiator and continuing to mix to obtain the coating.

[0017] The working principle and beneficial effects of the present invention are:

[0018] 1. The present invention provides a coating for sports floors, wherein the base material is a polyurethane acrylate UV light-curing resin, and m-phenylenediamine, a thickener, a defoaming agent, a base wetting agent, a leveling agent, a photoinitiator, a film-forming aid and water are added. The components are used in combination to provide a coating with good stain resistance and wear resistance. The m-phenylenediamine and the base material interact with each other during the coating application process, thereby increasing the cross-linking density of the system, thereby improving the stain resistance and wear resistance of the coating.

[0019] 2. The present invention further adds 3-n-butyl-2,4-pentanedione, which further increases the crosslinking density of the system and improves the hydrophobicity of the coating, thereby improving the stain resistance and wear resistance of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a water contact angle test diagram of the coating obtained in Example 2 of the present invention;

[0022] Figure 2 This is a water contact angle test diagram of the coating obtained in Example 6 of the present invention:

[0023] Figure 3 This is a water contact angle test diagram of the coating obtained in Comparative Example 1 of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] 75 parts of UV-5075S water-based matte UV resin, 5 parts of m-diphenylamine, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then photoinitiator BASF 1173 was added and stirred continuously to obtain a coating.

[0027] Example 2

[0028] 75 parts of UV-5075S water-based matte UV resin, 10 parts of m-diphenylamine, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then 2 parts of photoinitiator BASF 1173 were added and stirred continuously to obtain a coating.

[0029] Example 3

[0030] 75 parts of UV-5075S water-based matte UV resin, 15 parts of m-diphenylamine, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then photoinitiator BASF 1173 was added and stirred continuously to obtain a coating.

[0031] Example 4

[0032] 70 parts of UV-5075S water-based matte UV resin, 10 parts of m-diphenylamine, 0.5 parts of thickener RM-2020NPR, 0.3 parts of defoamer A-10, 1 part of substrate wetting agent BYK349, 0.2 parts of leveling agent BYK3550, 3 parts of dipropylene glycol methyl ether, and 5 parts of water were mixed uniformly, and then 1.5 parts of photoinitiator BASF 184 was added and stirred continuously to obtain a coating.

[0033] Example 5

[0034] 80 parts of UV-5075S water-based matte UV resin, 10 parts of m-diphenylamine, 1.2 parts of thickener RM-2020NPR, 0.3 parts of defoamer A-10, 0.3 parts of defoamer BYK-024, 1 part of substrate wetting agent BYK349, 1 part of substrate wetting agent RW-5211, 0.5 parts of leveling agent BYK3550, 6 parts of propylene glycol methyl ether, and 13 parts of water were mixed uniformly, and then 2.5 parts of photoinitiator BASF 184 were added and stirred continuously to obtain a coating.

[0035] Example 6

[0036] 75 parts of UV-5075S water-based matte UV resin, 10 parts of m-diphenylamine, 3 parts of 3-n-butyl-2,4-pentanedione, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then 2 parts of photoinitiator BASF 1173 were added and stirred continuously to obtain a coating.

[0037] Example 7

[0038] 75 parts of UV-5075S water-based matte UV resin, 10 parts of m-diphenylamine, 5 parts of 3-n-butyl-2,4-pentanedione, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then 2 parts of photoinitiator BASF 1173 were added and stirred continuously to obtain a coating.

[0039] Example 8

[0040] 75 parts of UV-5075S water-based matte UV resin, 10 parts of m-diphenylamine, 8 parts of 3-n-butyl-2,4-pentanedione, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then 2 parts of photoinitiator BASF 1173 were added and stirred continuously to obtain a coating.

[0041] Comparative Example 1

[0042] 75 parts of UV-5075S water-based matte UV resin, 0.8 parts of thickener RM-2020NPR, 0.4 parts of defoamer BYK-024, 1.5 parts of substrate wetting agent RW-5211, 0.3 parts of leveling agent BYK3510, 2 parts of propylene glycol methyl ether, 2.5 parts of dipropylene glycol methyl ether, and 8 parts of water were mixed uniformly, and then photoinitiator BASF 1173 was added and stirred continuously to obtain a coating.

[0043] The coatings obtained in Examples 1 to 8 and Comparative Example 1 were respectively applied to films and dried at high temperature. The film thickness was tested according to the method in GB / T 13452.2-2008 "Paints and varnishes - Determination of film thickness"; the abrasion resistance was tested according to the method in GB / T 1768-2006 "Paints and varnishes - Determination of abrasion resistance - Rotating rubber grinding wheel method";

[0044] The hydrophilic and hydrophobic effects are used to evaluate the stain resistance. The better the hydrophobicity, the better the stain resistance. The coating is applied on a glass slide and dried at high temperature. The contact angle of water droplets on the coating surface is measured using a water contact angle analyzer. Three points are tested for each sample, and the average value is taken as the final result.

[0045] The results are recorded in Table 1.

[0046] Table 1 Abrasion resistance and stain resistance

[0047]

[0048] As can be seen from Table 1, the abrasion resistance (750 g, 500 revolutions) of the coating provided by the present invention is below 0.034 g, which shows good abrasion resistance. Meanwhile, the water contact angle is above 100°, which shows good stain resistance.

[0049] Compared with Comparative Example 1, Examples 1 to 8 add m-diphenylamine, while Comparative Example 1 does not add m-diphenylamine. The wear resistance and stain resistance of the coatings obtained in Examples 1 to 8 are better than those in Comparative Example 1, indicating that the addition of m-diphenylamine can improve the wear resistance and stain resistance of the coating.

[0050] Compared with Examples 6 to 8, Examples 1 to 5 add 3-n-butyl-2,4-pentanedione to Examples 6 to 8, while Examples 1 to 5 do not add 3-n-butyl-2,4-pentanedione. The wear resistance and stain resistance of the coatings obtained in Examples 1 to 5 are not as good as those in Examples 6 to 8, indicating that the addition of 3-n-butyl-2,4-pentanedione can further improve the wear resistance and stain resistance of the coatings.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coating for sports flooring, characterized in that: The invention comprises the following raw materials in parts by mass: 70-80 parts of polyurethane acrylate UV light-curing resin, 5-15 parts of m-phenylenediamine, 0.5-1.2 parts of thickener, 0.3-0.6 parts of defoamer BYK-024, 1-2 parts of substrate wetting agent, 0.2-0.5 parts of leveling agent, 1.5-2.5 parts of photoinitiator, 3-6 parts of film-forming aid, 5-13 parts of water, and 3-8 parts of 3-n-butyl-2,4-pentanedione.

2. The coating for sports flooring according to claim 1, characterized in that: The mass ratio of the polyurethane acrylate UV light-curing resin to m-phenylenediamine is 7-8:

1.

3. The coating for sports flooring according to claim 1, characterized in that: The thickener is a polyurethane associative thickener.

4. The coating for sports flooring according to claim 1, characterized in that: The substrate wetting agent includes one or both of substrate wetting agent BYK349 ​​and substrate wetting agent RW-5211.

5. The coating for sports flooring according to claim 1, characterized in that: The leveling agent includes one or both of leveling agent BYK3550 and leveling agent BYK3510.

6. The coating for sports flooring according to claim 1, characterized in that: The photoinitiator includes one or both of photoinitiator BASF 1173 and photoinitiator BASF 184.

7. The coating for sports flooring according to claim 1, characterized in that: The film-forming aid includes one or both of dipropylene glycol methyl ether and propylene glycol methyl ether.

8. The method for preparing a coating for sports flooring according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: uniformly mixing polyurethane acrylate UV light-curing resin with other raw materials except a photoinitiator, then adding the photoinitiator and continuing to mix to obtain a coating.

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