High-hydrophobicity wear-resistant hardened coating and preparation method thereof

Abstract

The invention provides a high-hydrophobicity wear-resistant hardened coating and a preparation method thereof, and relates to the technical field of hardened paints.The high-hydrophobicity wear-resistant hardened coating is prepared from, by mass, 30-40 parts of ultraviolet curing resin, 5-20 parts of a high-refractive-index monomer, 3-20 parts of a photoinitiator and 50-80 parts of an organic solvent. An additive in the organic solvent is formed by mixing rigid particles, elastic particles and a hydrophobic agent according to the proportion of 3: 1: 15, the strength and wear resistance of the coating are effectively improved by adding the rigid particles, the toughness of the coating is effectively improved by adding the elastic particles, the hydrophobicity of the coating is improved by adding the hydrophobic agent, and the wear resistance of the coating is improved. And the whole body is more adaptive to the use requirements of the display panel.

Description

Technical Field

[0001] The present invention relates to the technical field of hardened coatings, and in particular to a highly hydrophobic and wear-resistant hardened coating and a preparation method thereof. Background Art

[0002] Hardened coating is also known as cured coating. It is a coating made using light-curing technology, which involves the curing process of monomers, oligomers or polymer matrices under light induction, and is usually used in the film-forming process. Light-curing coatings are highly efficient, widely adaptable, economical, energy-saving and environmentally friendly. They are energy-saving and clean environmentally friendly technologies. Their application not only saves energy, but also consumes only one-tenth of the energy of traditional mercury lamps, which protects the ecological environment.

[0003] The conventional hardened coating applied on the display panel has poor wear resistance and the water contact angle after friction is less than 90°. In addition, the protective layer of the flexible display in the related art has poor touch feeling, poor hydrophobicity and poor smoothness. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art that the conventional hardened coating applied on the display panel has poor wear resistance and the water contact angle after friction is less than 90°. In addition, the protective layer of the flexible display in the related art has poor touch feeling, poor hydrophobicity and poor smoothness.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a highly hydrophobic and wear-resistant hardened coating, which comprises the following raw material components by weight: 30-40 parts of UV-curable resin, 5-20 parts of high refractive index monomer, 3-20 parts of photoinitiator and 50-80 parts of organic solvent.

[0006] In at least some embodiments, the UV-curable resin is selected from at least one of acrylic resin, epoxy resin, polyurethane resin, acrylic-epoxy resin, acrylic-polyurethane resin, trichloroethylene resin and acrylic-trichloroethylene resin.

[0007] In at least some embodiments, the high refractive index monomer is selected from at least one of acryloylmorpholine and an aromatic sulfur-containing acrylate monomer.

[0008] In at least some embodiments, the photoinitiator is selected from one of TPO-L and UV184.

[0009] In at least some embodiments, the organic solvent is a mixture of a base solvent and an additive, and the base solvent is selected from at least one of butanone, propylene glycol methyl ether, methyl isobutyl ketone, methanol and ethyl acetate.

[0010] In at least some embodiments, the additive in the organic solvent is a mixture of rigid particles, elastic particles and a hydrophobic agent in a ratio of 3:1:15.

[0011] In at least some embodiments, the rigid particles are selected from at least one of silicon dioxide, zirconium dioxide and titanium dioxide.

[0012] In at least some embodiments, the elastic particles are polymethyl methacrylate.

[0013] In at least some embodiments, the hydrophobic agent is selected from at least one of polyurethane, polyethylene glycol, and polymethylcellulose.

[0014] A method for preparing a highly hydrophobic and wear-resistant hardened coating comprises the following steps:

[0015] a: mixing 30-40 parts by mass of a UV-curable resin and 50-80 parts by mass of an organic solvent at a rotation speed of 300 rpm to 1000 rpm to obtain a first mixture;

[0016] b: adding 5-20 parts of the high refractive index monomer to the first mixture, and mixing at a rotation speed of 2000 rpm-10000 rpm to obtain a second mixture;

[0017] c: Add 3-20 parts of the photoinitiator to the second mixture, and mix at a rotation speed of 1000 rpm-2000 rpm to obtain a coating.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are:

[0019] This hardened coating effectively improves the strength and wear resistance of the coating by adding rigid particles, effectively improves the toughness of the coating by adding elastic particles, and improves the hydrophobicity of the coating by adding hydrophobic agents, making it more suitable for the use requirements of display panels as a whole. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] A highly hydrophobic and wear-resistant hardened coating comprises the following raw material components by weight: 30-40 parts of ultraviolet curing resin, 5-20 parts of high refractive index monomer, 3-20 parts of photoinitiator and 50-80 parts of organic solvent.

[0023] The ultraviolet curable resin is selected from at least one of acrylic resin, epoxy resin, polyurethane resin, acrylic-epoxy resin, acrylic-polyurethane resin, trichloroethylene resin and acrylic-trichloroethylene resin.

[0024] The high refractive index monomer is selected from at least one of acryloylmorpholine and aromatic sulfur-containing acrylate monomers.

[0025] The photoinitiator is selected from one of TPO-L and UV184.

[0026] The organic solvent is a mixed liquid of a base solvent and an additive, and the base solvent is selected from at least one of butanone, propylene glycol methyl ether, methyl isobutyl ketone, methanol and ethyl acetate.

[0027] The additive in the organic solvent is a mixture of rigid particles, elastic particles and a hydrophobic agent in a ratio of 3:1:15.

[0028] The rigid particles are selected from at least one of silicon dioxide, zirconium dioxide and titanium dioxide.

[0029] The elastic particles are polymethyl methacrylate.

[0030] The hydrophobic agent is selected from at least one of polyurethane, polyethylene glycol and polymethylcellulose.

[0031] A method for preparing a highly hydrophobic and wear-resistant hardened coating comprises the following steps:

[0032] a: mixing 30-40 parts by mass of a UV-curable resin and 50-80 parts by mass of an organic solvent at a rotation speed of 300 rpm to 1000 rpm to obtain a first mixture;

[0033] b: adding 5-20 parts of the high refractive index monomer to the first mixture, and mixing at a rotation speed of 2000 rpm-10000 rpm to obtain a second mixture;

[0034] c: Add 3-20 parts of the photoinitiator to the second mixture, and mix at a rotation speed of 1000 rpm-2000 rpm to obtain a coating.

[0035] Example 1

[0036] A highly hydrophobic and wear-resistant hardened coating comprises the following raw material components, measured by weight: 30 parts of ultraviolet light curing resin, 5 parts of high refractive index monomer, 3 parts of photoinitiator and 50 parts of organic solvent.

[0037] The ultraviolet light curing resin is acrylic resin.

[0038] The high refractive index monomer is acryloylmorpholine.

[0039] The photoinitiator is TPO-L.

[0040] The organic solvent is a mixed liquid of a base solvent and an additive in a mass ratio of 10:1, and the base solvent is butanone.

[0041] The additive in the organic solvent is a mixture of rigid particles, elastic particles and a hydrophobic agent in a ratio of 3:1:15.

[0042] The rigid particles are silicon dioxide.

[0043] The elastic particles are polymethyl methacrylate.

[0044] The hydrophobic agent is polyurethane.

[0045] A method for preparing a highly hydrophobic and wear-resistant hardened coating comprises the following steps:

[0046] a: mixing 30 parts by mass of a UV-curable resin and 50 parts by mass of an organic solvent at a rotation speed of 300 rpm to obtain a first mixture;

[0047] b: adding 5 parts of the high refractive index monomer to the first mixture, and mixing at a rotation speed of 2000 rpm to obtain a second mixture;

[0048] c: Add 3 parts of the photoinitiator into the second mixture and mix at a rotation speed of 1000 rpm to obtain a coating.

[0049] Example 2

[0050] A highly hydrophobic and wear-resistant hardened coating comprises the following raw material components, measured by weight: 35 parts of ultraviolet light curing resin, 12.5 parts of high refractive index monomer, 11.5 parts of photoinitiator and 65 parts of organic solvent.

[0051] The ultraviolet curable resin is epoxy resin.

[0052] The high refractive index monomer is an acrylate monomer containing aromatic sulfur.

[0053] The photoinitiator is selected from TPO-L.

[0054] The organic solvent is a mixed solution of a base solvent and an additive in a mass ratio of 10:1, and the base solvent is propylene glycol methyl ether.

[0055] The additive in the organic solvent is a mixture of rigid particles, elastic particles and a hydrophobic agent in a ratio of 3:1:15.

[0056] The rigid particles are zirconium dioxide.

[0057] The elastic particles are polymethyl methacrylate.

[0058] The hydrophobic agent is polyethylene glycol.

[0059] A method for preparing a highly hydrophobic and wear-resistant hardened coating comprises the following steps:

[0060] a: mixing 35 parts of a UV-curable resin and 65 parts of an organic solvent at a rotation speed of 650 rpm to obtain a first mixture;

[0061] b: adding 12.5 parts of the high refractive index monomer to the first mixture, and mixing at a rotation speed of 6000 rpm to obtain a second mixture;

[0062] c: 11.5 parts of the photoinitiator was added to the second mixture, and the mixture was mixed at a rotation speed of 1500 rpm to obtain a coating.

[0063] Example 3

[0064] A highly hydrophobic and wear-resistant hardened coating comprises the following raw material components, measured by weight: 40 parts of ultraviolet light curing resin, 20 parts of high refractive index monomer, 20 parts of photoinitiator and 80 parts of organic solvent.

[0065] The ultraviolet curable resin is a mixture of acrylic resin and epoxy resin.

[0066] The high refractive index monomer is a mixture of acryloylmorpholine and an acrylate monomer containing aromatic sulfur.

[0067] The photoinitiator is UV184.

[0068] The organic solvent is a mixed liquid of a base solvent and an additive in a mass ratio of 10:1, and the base solvent is selected from a mixture of butanone and propylene glycol methyl ether.

[0069] The additive in the organic solvent is a mixture of rigid particles, elastic particles and a hydrophobic agent in a ratio of 3:1:15.

[0070] The rigid particles are selected from a mixture of silicon dioxide and zirconium dioxide.

[0071] The elastic particles are polymethyl methacrylate.

[0072] The hydrophobic agent is selected from a mixture of polyurethane and polyethylene glycol.

[0073] A method for preparing a highly hydrophobic and wear-resistant hardened coating comprises the following steps:

[0074] a: mixing 40 parts by mass of a UV-curable resin and 80 parts by mass of an organic solvent at a rotation speed of 1000 rpm to obtain a first mixture;

[0075] b: adding 20 parts of the high refractive index monomer to the first mixture, and mixing at a rotation speed of 10000 rpm to obtain a second mixture;

[0076] c: Add 20 parts of the photoinitiator into the second mixture and mix at a rotation speed of 2000 rpm to obtain a coating.

[0077] The coatings were prepared by the methods of the embodiments, and then sprayed on the surface of the test display panel. The wear resistance of the test display panel surface was tested by a wear tester, and the hydrophobicity was tested by dripping water. The following conclusions were obtained:

[0078] Compared with the coating sample without additives, the wear resistance of Example 1 is improved by II degrees, the contact angle is between 90 degrees and 150 degrees, water droplets are formed on the surface, and the penetration phenomenon is not obvious;

[0079] Compared with the coating sample without additives, the wear resistance level of Example 2 is improved by Ⅱ degrees, the contact angle is greater than 150 degrees, the water droplets are highly intact on the surface of the material, and the penetration phenomenon is extremely unobvious;

[0080] Compared with the coating sample without adding additives, the wear resistance level of Example 3 is improved by Ⅲ degrees, the contact angle is greater than 150 degrees, the water droplets are highly intact on the surface of the material, and the penetration phenomenon is extremely unobvious.

[0081] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A highly hydrophobic and wear-resistant hardened coating, comprising the following raw material components by weight: 30-40 parts of ultraviolet curing resin, 5-20 parts of high refractive index monomer, 3-20 parts of photoinitiator and 50-80 parts of organic solvent.

2. A highly hydrophobic and wear-resistant hardened coating according to claim 1, characterized in that: The ultraviolet curable resin is selected from at least one of acrylic resin, epoxy resin, polyurethane resin, acrylic-epoxy resin, acrylic-polyurethane resin, trichloroethylene resin and acrylic-trichloroethylene resin.

3. A highly hydrophobic and wear-resistant hardened coating according to claim 1, characterized in that: The high refractive index monomer is selected from at least one of acryloylmorpholine and aromatic sulfur-containing acrylate monomers.

4. The highly hydrophobic and wear-resistant hardened coating according to claim 1, characterized in that: The photoinitiator is selected from one of TPO-L and UV184.

5. The highly hydrophobic and wear-resistant hardened coating according to claim 1, characterized in that: The organic solvent is a mixed liquid of a base solvent and an additive, and the base solvent is selected from at least one of butanone, propylene glycol methyl ether, methyl isobutyl ketone, methanol and ethyl acetate.

6. A highly hydrophobic and wear-resistant hardened coating according to claim 5, characterized in that: The additive in the organic solvent is a mixture of rigid particles, elastic particles and a hydrophobic agent in a ratio of 3:1:

15.

7. A highly hydrophobic and wear-resistant hardened coating according to claim 6, characterized in that: The rigid particles are selected from at least one of silicon dioxide, zirconium dioxide and titanium dioxide.

8. A highly hydrophobic and wear-resistant hardened coating according to claim 7, characterized in that: The elastic particles are polymethyl methacrylate.

9. A highly hydrophobic and wear-resistant hardened coating according to claim 8, characterized in that: The hydrophobic agent is selected from at least one of polyurethane, polyethylene glycol and polymethylcellulose.

10. A method for preparing a highly hydrophobic and wear-resistant hardened coating according to any one of claims 1 to 8, characterized in that: The following steps are involved: a: mixing 30-40 parts by mass of a UV-curable resin and 50-80 parts by mass of an organic solvent at a rotation speed of 300 rpm to 1000 rpm to obtain a first mixture; b: adding 5-20 parts of the high refractive index monomer to the first mixture, and mixing at a rotation speed of 2000 rpm-10000 rpm to obtain a second mixture; c: Add 3-20 parts of the photoinitiator to the second mixture, and mix at a rotation speed of 1000 rpm-2000 rpm to obtain a coating.