阅读说明：本技术 防指纹涂料组合物 (Anti-fingerprint coating composition ) 是由 吴文杰 张艳丽 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种防指纹涂料组合物,所述防指纹涂料组合物包括按重量份计的如下组分：含氟丙烯酸酯单体10～30wt％,含硅丙烯酸酯单体20～40wt％,光引发剂1～3wt％,空心微球5～15wt％,有机溶剂10～30wt％,通过聚合反应形成交联网络。本发明的防指纹涂料组合物,将其涂布在基材表面,可防止指纹及油污粘附,且能轻易擦除,实现防指纹的效果。(The invention discloses an anti-fingerprint coating composition, which comprises the following components in parts by weight: 10-30 wt% of fluorine-containing acrylate monomer, 20-40 wt% of silicon-containing acrylate monomer, 1-3 wt% of photoinitiator, 5-15 wt% of hollow microspheres and 10-30 wt% of organic solvent, and forming a cross-linked network through a polymerization reaction. The anti-fingerprint coating composition disclosed by the invention can prevent fingerprints and oil stains from being adhered by coating the anti-fingerprint coating composition on the surface of a base material, and can be easily erased, so that the anti-fingerprint effect is realized.)

1. The anti-fingerprint coating composition is characterized by comprising the following components in parts by weight: 10-30 wt% of fluorine-containing acrylate monomer, 20-40 wt% of silicon-containing acrylate monomer, 1-3 wt% of photoinitiator, 5-15 wt% of hollow microspheres and 10-30 wt% of organic solvent, and forming a cross-linked network through a polymerization reaction.

2. The anti-fingerprint coating composition as claimed in claim 1, wherein the fluorine-containing acrylate monomer is selected from one or more of fluorine-containing methyl acrylate, fluorine-containing ethyl acrylate, fluorine-containing n-butyl acrylate, fluorine-containing methyl methacrylate, fluorine-containing ethyl methacrylate and fluorine-containing n-butyl methacrylate.

3. The anti-fingerprint coating composition of claim 1, wherein the silicon-containing acrylate monomer is selected from one or more of silicon-containing ethyl acrylate, silicon-containing propyl acrylate, silicon-containing n-butyl acrylate, silicon-containing ethyl methacrylate, silicon-containing propyl methacrylate, and silicon-containing n-butyl methacrylate.

4. The anti-fingerprint coating composition of claim 1, wherein the hollow microspheres are selected from one or more of silica hollow microspheres, calcium carbonate hollow microspheres and hollow glass microspheres, and the diameter of the hollow microspheres is 1-10 μm.

5. The anti-fingerprint coating composition as claimed in claim 1, wherein the photoinitiator is one or more of 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, 1-hydroxy-cyclohexyl-phenyl ketone, dibenzoyl peroxide, dicumyl peroxide.

6. The anti-fingerprint coating composition of claim 1, wherein the organic solvent is one or more selected from tetrahydrofuran, acetonitrile, benzene, toluene, xylene, acetone, cyclopropanone, cyclohexanone, toluene cyclohexanone, dioxane, ethylene glycol, glycerol, styrene, ethyl acetate, and ethylene glycol monomethyl ether.

7. The anti-fingerprint coating composition of claim 1, further comprising 5 to 30 wt% of an acrylate monomer.

8. The anti-fingerprint coating composition of claim 7 wherein the acrylate monomer is selected from one or more of 1, 6-hexanediol diacrylate, pentaerythritol triacrylate, di-official aliphatic urethane acrylate, and hexa-official aliphatic urethane acrylate.

9. The anti-fingerprint coating composition as claimed in claim 1, further comprising 5 to 10 wt% of nano silica sol.

10. The anti-fingerprint coating composition of claim 1, wherein the anti-fingerprint coating composition is applied to a plastic, glass, or ceramic substrate.

Technical Field

The invention relates to the technical field of coating compositions, in particular to an anti-fingerprint coating composition.

Background

In recent years, consumers have increasingly high requirements on electronic products (mobile phones, notebook computers, digital bracelets, wearable electronic products, and the like), and in addition to pursuing more, stronger, and more stable performances, higher requirements on the appearance of the products, such as water resistance, corrosion resistance, dust prevention, oil stain resistance, fingerprint resistance, and the like, are also put forward. Because these electronic products use the frequency extremely high, very easily glue a large amount of fingerprints at its shell and screen, not only influence the pleasing to the eye of electronic product shell and screen, also can breed a large amount of bacteriums moreover, form the threat to health. Therefore, anti-fingerprint treatment of the surface of the electronic product is important.

The existing methods for realizing the anti-fingerprint function mainly comprise the following two methods:

1. treating with an anti-fingerprint agent: the fingerprint resisting agent commonly used at present contains perfluoropolyether groups, has a series of physicochemical properties such as thermal stability, chemical inertness, no toxicity, harmlessness, low glass transition temperature, good dielectric property, hydrophobicity, oleophobicity and the like, and is widely applied to the fields of water-proof, oil-proof and antifouling agents on glass surfaces, lubricating agents for magnetic recording media, oil-proof agents for precision instruments, protective films and the like. However, in order to combine an organic material with an inorganic material such as glass, a silane coupling technique is often used, and since a hydrolyzable group of the compound exists only at one end of a molecule, there is a problem in durability, and the performance is significantly reduced after long-term use and the cost is high.

2. Film coating: the method mainly adopts the methods of vacuum evaporation coating and radio frequency magnetron sputtering coating to coat the film on the surface of a product, and is realized by using different oxides, coating thickness and coating layer number. In the high-temperature coating process, due to the impact of high-energy particle bombardment and high temperature, the performance of the high-molecular film is easy to change (such as becoming brittle, being not resistant to weather, and the like), and meanwhile, the high-molecular film is easy to scratch.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a fingerprint-proof coating composition, which is coated on the surface of a base material, can prevent fingerprints and oil stains from being adhered, can be easily erased, and realizes the fingerprint-proof effect.

In order to solve the technical problems, the invention provides an anti-fingerprint coating composition, which comprises the following components in parts by weight: 10-30 wt% of fluorine-containing acrylate monomer, 20-40 wt% of silicon-containing acrylate monomer, 1-3 wt% of photoinitiator, 5-15 wt% of hollow microspheres and 10-30 wt% of organic solvent, and forming a cross-linked network through a polymerization reaction.

Further, the fluorine-containing acrylate monomer is selected from one or more of fluorine-containing methyl acrylate, fluorine-containing ethyl acrylate, fluorine-containing n-butyl acrylate, fluorine-containing methyl methacrylate, fluorine-containing ethyl methacrylate and fluorine-containing n-butyl methacrylate.

Further, the silicon-containing acrylate monomer is selected from one or more of silicon-containing ethyl acrylate, silicon-containing propyl acrylate, silicon-containing n-butyl acrylate, silicon-containing ethyl methacrylate, silicon-containing propyl methacrylate and silicon-containing n-butyl methacrylate.

Further, the hollow microspheres are selected from one or more of silica hollow microspheres, calcium carbonate hollow microspheres and hollow glass microspheres, and the diameter of the hollow microspheres is 1-10 μm.

Further, the photoinitiator is one or more of 2,4, 6-trimethylbenzoyl-diphenyl phosphorus oxide, 1-hydroxy-cyclohexyl-phenyl ketone, dibenzoyl peroxide and dicumyl peroxide.

Further, the organic solvent is selected from one or more of tetrahydrofuran, acetonitrile, benzene, toluene, xylene, acetone, cyclopropanone, cyclohexanone, toluene cyclohexanone, dioxane, ethylene glycol, glycerol, styrene, ethyl acetate and ethylene glycol monomethyl ether.

Further, the anti-fingerprint coating composition also comprises 5-30 wt% of acrylate monomer.

Further, the acrylate monomer is selected from one or more of 1, 6-hexanediol diacrylate, pentaerythritol triacrylate, double-official aliphatic urethane acrylate and six-official aliphatic urethane acrylate.

Further, the anti-fingerprint coating composition also comprises 5-10 wt% of nano silica sol.

Further, the anti-fingerprint coating composition may be applied to substrates including, but not limited to, plastic, glass, or ceramic.

The invention has the beneficial effects that:

1. the fluorosilicone resin has excellent heat resistance, corrosion resistance, weather resistance and water and oil repellency, but has the defects of poor mechanical property and poor adhesion to a substrate, so that the application of the fluorosilicone resin is limited. According to the invention, the fluorine-containing acrylate monomer and the silicon-containing acrylate monomer are subjected to polymerization reaction under the action of the photoinitiator to form the coating composition with an interpenetrating network structure, which integrates the excellent heat resistance, weather resistance, oil resistance and water resistance of the fluorosilicone resin and the excellent adhesive property of the acrylic resin, so that the coating composition can be firmly attached to various substrates including glass; and because of the low surface energy of fluorine atoms, fluorine tends to enrich on the surface of the coating in the coating process, so that the hydrophobic and oleophobic properties of the coating can be obviously improved, and the anti-fingerprint effect is improved.

2. According to the invention, a certain amount of hollow microspheres are added into the coating composition, and the refractive index of the hollow microspheres is low, so that the light transmission capacity can be increased, the surface is smooth, the hand feeling is comfortable, and the coating is not easy to scratch; secondly, the hollow microspheres have excellent anisotropic consistency, so that warping and shrinkage caused by inconsistent stress after processing can be avoided; due to the particle size distribution of the hollow microspheres, the small microspheres fill the gaps of the large microspheres, so that the solid content of the microspheres is increased, and meanwhile, the volatile content of the microspheres is low, so that the VOC is reduced; finally, the hollow microspheres have small specific surface area, so that the using amount of resin can be reduced, and meanwhile, the hollow microspheres can play a role in increasing the flowability of the resin, so that the using amount of the resin is also reduced.

3. According to the invention, a certain amount of nano silica sol is added into the coating composition, and the silica sol has strong affinity to the glass substrate, so that the nano silica sol can be preferentially attached to the glass substrate in the curing process, and after the solvent in the silica sol is volatilized, colloidal particles are firmly attached to the surface of the glass, silica bonding is formed among the particles, the particles are firmly bonded to the glass substrate, and the durability of the coating is improved; and because the colloidal particles in the silica sol are fine (10-20 nm), the silica sol has a relatively large specific surface area, and the particles are colorless and transparent, so that the natural color of the base material is not influenced.

4. In the invention, a certain amount of acrylate monomer is added into the coating composition, preferably 1, 6-hexanediol diacrylate, pentaerythritol triacrylate and other monomers with high functionality, which is beneficial to improving the hardness and scratch resistance of the coating.

5. The anti-fingerprint coating composition disclosed by the invention adopts a coating process, can realize an anti-fingerprint effect by only coating once, and is simple in process; and has excellent optical performance without changing the original texture of the substrate.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the examples are not intended to limit the present invention.