High-performance vacuum electroplating UV (Ultraviolet) coating and preparation method thereof

Abstract

The invention discloses high-performance vacuum electroplating UV (Ultraviolet) coating. The UV coating is prepared from three coating layers including undercoat, intermediate coat and finishing coat,wherein each coating is prepared by mixing according to the weight ratio (part); the undercoat is prepared from the following components in parts by weight: 30 to 40 parts of a high polymer resin connecting material, 5 to 10 parts of an active monomer, 0.2 to 0.3 part of a flatting agent, 1.5 to 2 parts of a photoinitiator and 55 to 65 parts of a solvent; the intermediate coat is prepared from the following components in parts by weight: 30 to 40 parts of the high polymer resin connecting material, 1.0 to 1.5 parts of an adhesion promoter, 0.1 to 0.15 part of the flatting agent, 0.5 to 0.8 part of the photoinitiator and 60 to 70 parts of the solvent; the finishing coat is prepared from the following components in parts by weight: 30 to 45 parts of the high polymer resin connecting material, 2 to 5 parts of the active monomer, 0.2 to 0.3 part of the flatting agent, 0.5 to 1.5 parts of the photoinitiator, 0.3 to 1 part of the adhesion promoter and 60 to 70 parts of the solvent. The high-performance vacuum electroplating UV coating has the advantages that the construction yield is relatively high, the production efficiency is improved, the production cost is reduced and the economicbenefits are relatively good.

Description

technical field

[0001] The invention relates to the technical field of new materials, in particular to a vacuum electroplating UV paint coated on a mobile phone plastic casing and a preparation method thereof. Background technique

[0002] Vacuum coating technology is to deposit a certain metal or metal compound on the surface of a material (non-metal) in the form of vapor in a vacuum environment. It belongs to the physical vapor deposition process. The coating is usually a metal film such as aluminum or indium. Based on the characteristics of this technology, vacuum electroplating UV coatings are mainly composed of UV-curable resins, monomers, initiators, adhesion promoters, leveling agents, solvents, etc. Topcoat) or three-coat (primer, mid-coat, topcoat) process for construction.

[0003] Existing vacuum electroplating UV coatings, due to different materials, improper system design and matching of primers, intermediate paints, and top coats, improper selection of main re...

Examples

Embodiment 1

[0065] For the primer in the UV coating, its preparation method is as follows: in a certain volume of stirring dispersion tank, according to the weight ratio, add aliphatic polycarbonate type polyurethane acrylate resin (trade name Boxing B-221) 30 parts, (3) 5 parts of ethoxylated trimethylolpropane triacrylate, start stirring, and add 1.5 parts of photoinitiator 184 while dispersing at a low speed, and 0.2 parts of leveling agent acrylate (trade name BYK-358N) , and then add 24 parts of butyl ester in the mixed solvent, and disperse for 30 minutes at a speed of 1000±50 rpm, so that the material is completely dispersed; then add 13 parts of ethyl ester in the mixed solvent, methyl isobutyl ketone 18 parts, after stirring for 5-8 minutes at a speed of 600±50 rpm, stop the dispersion, check the viscosity and other items of the primer coating, filter it with an 800-mesh filter bag and pack it after passing the test.

Embodiment 2

[0067] For the primer in the UV coating, its preparation method is as follows: in a certain volume of stirring dispersion tank, according to the weight ratio, add aliphatic polycarbonate type polyurethane acrylate resin (trade name Boxing B-221) 35 parts, (3) 8 parts of ethoxylated trimethylolpropane triacrylate, start stirring, and add 1.5 parts of photoinitiator 184 while dispersing at a low speed, and 0.3 parts of leveling agent acrylate (trade name BYK-358N) , and then add 24 parts of butyl ester in the mixed solvent, the speed is 1000±50 rpm, disperse for 30 minutes, so that the material is completely dispersed; then add 15 parts of ethyl ester and 18 parts of methyl isobutyl ketone in the solvent After stirring for 5-8 minutes at a speed of 600±50 rpm, stop the dispersion, check the viscosity and other items of the primer coating, filter it with an 800-mesh filter bag and pack it after passing the test.

Embodiment 3

[0069] For the primer in the UV coating, its preparation method is as follows: in a certain volume of stirring dispersion tank, according to the weight ratio, add aliphatic polycarbonate type polyurethane acrylate resin (trade name Boxing B-221) 40 parts, (3) 8 parts of ethoxylated trimethylolpropane triacrylate, start stirring, and add 2 parts of photoinitiator 184 while dispersing at a low speed, 0.2 part of leveling agent acrylate (trade name BYK-358N) , and then add 28 parts of butyl ester in the mixed solvent, and disperse for 30 minutes at a speed of 1000±50 rpm, so that the material is completely dispersed; then add 16 parts of ethyl ester and 21 parts of methyl isobutyl ketone in the solvent After stirring for 5-8 minutes at a speed of 600±50 rpm, stop the dispersion, check the viscosity and other items of the primer coating, filter it with an 800-mesh filter bag and pack it after passing the test.

technical field

[0001] The invention relates to the technical field of new materials, in particular to a vacuum electroplating UV paint coated on a mobile phone plastic casing and a preparation method thereof. Background technique

[0002] Vacuum coating technology is to deposit a certain metal or metal compound on the surface of a material (non-metal) in the form of vapor in a vacuum environment. It belongs to the physical vapor deposition process. The coating is usually a metal film such as aluminum or indium. Based on the characteristics of this technology, vacuum electroplating UV coatings are mainly composed of UV-curable resins, monomers, initiators, adhesion promoters, leveling agents, solvents, etc. Topcoat) or three-coat (primer, mid-coat, topcoat) process for construction.

[0003] Existing vacuum electroplating UV coatings, due to different materials, improper system design and matching of primers, intermediate paints, and top coats, improper selection of main re...

Examples

Embodiment 1

[0065] For the primer in the UV coating, its preparation method is as follows: in a certain volume of stirring dispersion tank, according to the weight ratio, add aliphatic polycarbonate type polyurethane acrylate resin (trade name Boxing B-221) 30 parts, (3) 5 parts of ethoxylated trimethylolpropane triacrylate, start stirring, and add 1.5 parts of photoinitiator 184 while dispersing at a low speed, and 0.2 parts of leveling agent acrylate (trade name BYK-358N) , and then add 24 parts of butyl ester in the mixed solvent, and disperse for 30 minutes at a speed of 1000±50 rpm, so that the material is completely dispersed; then add 13 parts of ethyl ester in the mixed solvent, methyl isobutyl ketone 18 parts, after stirring for 5-8 minutes at a speed of 600±50 rpm, stop the dispersion, check the viscosity and other items of the primer coating, filter it with an 800-mesh filter bag and pack it after passing the test.

Embodiment 2

[0067] For the primer in the UV coating, its preparation method is as follows: in a certain volume of stirring dispersion tank, according to the weight ratio, add aliphatic polycarbonate type polyurethane acrylate resin (trade name Boxing B-221) 35 parts, (3) 8 parts of ethoxylated trimethylolpropane triacrylate, start stirring, and add 1.5 parts of photoinitiator 184 while dispersing at a low speed, and 0.3 parts of leveling agent acrylate (trade name BYK-358N) , and then add 24 parts of butyl ester in the mixed solvent, the speed is 1000±50 rpm, disperse for 30 minutes, so that the material is completely dispersed; then add 15 parts of ethyl ester and 18 parts of methyl isobutyl ketone in the solvent After stirring for 5-8 minutes at a speed of 600±50 rpm, stop the dispersion, check the viscosity and other items of the primer coating, filter it with an 800-mesh filter bag and pack it after passing the test.

Embodiment 3

[0069] For the primer in the UV coating, its preparation method is as follows: in a certain volume of stirring dispersion tank, according to the weight ratio, add aliphatic polycarbonate type polyurethane acrylate resin (trade name Boxing B-221) 40 parts, (3) 8 parts of ethoxylated trimethylolpropane triacrylate, start stirring, and add 2 parts of photoinitiator 184 while dispersing at a low speed, 0.2 part of leveling agent acrylate (trade name BYK-358N) , and then add 28 parts of butyl ester in the mixed solvent, and disperse for 30 minutes at a speed of 1000±50 rpm, so that the material is completely dispersed; then add 16 parts of ethyl ester and 21 parts of methyl isobutyl ketone in the solvent After stirring for 5-8 minutes at a speed of 600±50 rpm, stop the dispersion, check the viscosity and other items of the primer coating, filter it with an 800-mesh filter bag and pack it after passing the test.

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