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Low energy curing uv coating system for pet plastic vacuum coating spraying process

A vacuum coating, low-energy technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problem that the appearance of UV coating does not meet the application requirements, the adhesion of UV coating does not meet the requirements for use, and the surface hardness is uneven. soft and other issues

Active Publication Date: 2017-04-26
HUNAN JINHAI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The adhesion of UV coating on PET plastic can not meet the requirements of use
[0007] 2. The appearance effect of the UV coating on the plastic does not meet the application requirements
[0008] 3. The curing energy of UV coating on existing PET plastics is generally 600-900mj / c㎡, while low-energy curing at 100-200mj / c㎡ cannot meet the requirements of good adhesion and good coating performance
[0009] 4. The hardness of the surface of the UV coating on the plastic is soft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] The preparation method of PET spray UV special bottom: high functional polyurethane modified acrylate, multifunctional aliphatic polyurethane acrylate, 1,6 hexanediol diacrylate, photoinitiator, auxiliary agent, ethyl acetate, Butyl acetate, methyl isobutyl ketone, propylene glycol methyl ether, etc. are put into the reaction kettle in sequence according to the mass ratio, and after stirring at room temperature and low speed for 30 minutes, the desired PET spray UV bottom is obtained.

[0050] Preparation method of UV electroplating surface: acrylate-modified solvent-containing oligomer, dipentaerythritol penta / hexaacrylate, high-functional polyurethane acrylate resin, photoinitiator, adhesion promoter, auxiliary agent, ethyl acetate, acetic acid Butyl ester, methyl isobutyl ketone, propylene glycol methyl ether acetate, etc. were put into the reaction kettle in sequence according to the mass ratio, and stirred at room temperature and low speed for 30 minutes to obtain t...

Embodiment 1

[0053] Formula mass percentage of PET spray UV special bottom:

[0054] High-functionality urethane-modified acrylate: 14%

[0055] Multifunctional aliphatic urethane acrylate: 1.6%

[0056] 1,6-hexanediol diacrylate: 1.4%

[0057] Photoinitiator: 1.8%

[0058] Additives: 0.2%

[0059] Ethyl acetate: 50%

[0060] Butyl acetate: 10%

[0061] Methyl isobutyl ketone: 15%

[0062] Propylene glycol methyl ether: 6%

[0063] Formula mass percentage of UV electroplating surface:

[0064] Acrylate-modified solventborne oligomer: 9%

[0065] Dipentaerythritol penta / hexaacrylate: 2%

[0066] Hexafunctional urethane acrylate resin: 6%

[0067] Photoinitiator: 1.5%

[0068] Adhesion Promoter: 0.4%

[0069] Additives: 0.1%

[0070] Ethyl acetate: 45%

[0071] Butyl acetate: 9%

[0072] Methyl isobutyl ketone: 25%

[0073] Propylene glycol methyl ether acetate: 2%

Embodiment 2

[0075] Formula mass percentage of PET spray UV special bottom:

[0076] High-functionality urethane-modified acrylate: 20%

[0077] Multifunctional aliphatic urethane acrylate: 5.8%

[0078] 1,6-hexanediol diacrylate: 0.7%

[0079] Photoinitiator: 1.4%

[0080] Additives: 0.1%

[0081] Ethyl acetate: 40%

[0082] Butyl acetate: 12%

[0083] Methyl isobutyl ketone: 12%

[0084] Propylene Glycol Methyl Ether: 8%

[0085] Formula mass percentage of UV electroplating surface:

[0086] Acrylate-modified solventborne oligomer: 13%

[0087] Dipentaerythritol penta / hexaacrylate: 4%

[0088] Hexafunctional urethane acrylate resin: 7%

[0089] Photoinitiator: 1%

[0090] Adhesion Promoter: 0.2%

[0091] Additives: 0.5%

[0092] Ethyl acetate: 35.3%

[0093] Butyl acetate: 14%

[0094] Methyl isobutyl ketone: 20%

[0095] Propylene glycol methyl ether acetate: 5%

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Abstract

The invention belongs to the field of ultraviolet (UV) light curing new materials, particularly relates to a coating layer mainly applied to PET plastic protection and decoration, and provides a low-energy curing UV coating system for a PET plastic vacuum coating spraying process. The low-energy curing UV coating system for the PET plastic vacuum coating spraying process is formed by a PET spraying UV special bottom and a UV electroplating surface. The PET spraying UV special bottom is coated according to the film formation adhesion and hardness, then the UV electroplating surface is coated, under the action of a photoinitiator, and the PET spraying UV special bottom and the UV electroplating surface are subjected to ultraviolet light curing and respectively form films, so that coating layer structures good in adhesion, good in plating and different in hardness are formed, and the characteristics of good adhesion, low erosion, low-energy curing, high efficiency and no benzene are achieved.

Description

technical field [0001] The invention belongs to the field of new ultraviolet curing materials, relates to a protective coating mainly for difficult-to-attach PET plastic decorations, and in particular relates to providing a low-energy curing UV coating system for PET plastic vacuum coating spraying process. Background technique [0002] Ultraviolet radiation curing technology is a green technology that is becoming more and more mature and widely used. The ultraviolet curing coatings produced by this technology are referred to as UV coatings. At present, plastic products on the market [0003] The application of UV paint decoration is very extensive, mainly by spraying process. However, the spraying process on the commonly used ABS and PC substrates is coated with an alkyd baking system, and the efficiency is low. [0004] ABS and PC substrates commonly used in plastic products are expensive and will be replaced by cheap PET plastics. However, PET plastic is a material tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 刘立新王石青李祥陈国栋
Owner HUNAN JINHAI SCI & TECH
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