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UV (ultraviolet) cured coating composition for PET (polyethylene terephthalate) base material and preparation method of composition

A composition and coating technology, used in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of high coating thickness, complicated and complicated implementation process, increased cost, etc., and achieve good tensile properties. , Good scratch resistance, reduce the effect of rainbow pattern

Inactive Publication Date: 2012-08-22
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires two coatings and UV curing to achieve, the implementation process is cumbersome and complicated, and the higher coating thickness also increases the cost

Method used

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  • UV (ultraviolet) cured coating composition for PET (polyethylene terephthalate) base material and preparation method of composition
  • UV (ultraviolet) cured coating composition for PET (polyethylene terephthalate) base material and preparation method of composition
  • UV (ultraviolet) cured coating composition for PET (polyethylene terephthalate) base material and preparation method of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0032] The preparation of the UV curable coating composition for the PET base material of present embodiment 1~3 comprises the following steps:

[0033] a. Prepare materials according to the components and parts by weight shown in Table 1; the high-refractive-index monomer is a functional monomer containing UV-curable groups with a refractive index greater than or equal to 1.55;

[0034] b. Put the solvent into the reaction kettle, add the additive and the photoinitiator while stirring, and stir until completely dissolved;

[0035] c. Put the UV-curable resin and the high-refractive-index monomer into the reactor, stir (1.5 hours) until completely dissolved, and then stop stirring;

[0036] d. Stir slowly for another 20 minutes and filter to obtain the UV curable coating composition for PET substrates.

Embodiment 4

[0038] The preparation steps of this embodiment are the same as those of Examples 1-3, except that the stirring time in step c is 0.5 hour; the slow stirring time in step e is 10 minutes.

Embodiment 5

[0040] The preparation steps of this example are the same as those of Examples 1-3, except that the stirring time in step c is 2.5 hours; the time of slow stirring in step e is 30 minutes.

[0041] Each component and parts by weight in the embodiment 1~5 of table 1

[0042]

[0043]

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Abstract

The invention discloses a UV (ultraviolet) cured coating composition for a PET (polyethylene terephthalate) base material and the preparation method of the composition. The cured coating composition comprises the following components in parts by weight of: 2-30 parts of high-refractive-index monomer, 10-60 parts of ultraviolet cured resin, 0.5-8 parts of photoinitiator, 0.01-0.5 part of additive and 20-80 parts of solvent. The preparation method of the composition comprises the following steps of: adding the solvent into a reaction kettle, adding the additive and the photoinitiator while stirring, and stirring to be completely dissolved; adding the ultraviolet cured resin and the high-refractive-index monomer into the reaction kettle, stirring to be completely dissolved, and stopping stirring; and slowly stirring, and filtering, so that the ultraviolet curing coated composition can be obtained. Compared with the prior art, the preparation method disclosed by the invention has no special requirement to coating thickness and the like, and is simple in implementation technology, and wide in application range; and by using the prepared UV cured coating composition for the PET base material, Newton rings can be effectively reduced, so that the UV cured coating composition is good in visual effect.

Description

technical field [0001] The invention relates to a coating for a PET base material, in particular to a UV curable coating composition for a PET base material and a preparation method thereof. Background technique [0002] During the use of electronic products, 3C products and optical functional products, the surface is easily scratched, resulting in a decrease in performance or a decrease in visual effect. Therefore, the surface of such products must be protected. PET film has good light transmittance and light weight, which is very suitable for this kind of products as a protective layer. In order to prevent the surface of PET from being scratched, the most commonly used method is to coat a hardened layer on the surface of PET to increase the surface hardness of PET, thereby improving its scratch resistance and wear resistance. Generally, the hardened layer has a different refractive index than the PET substrate, with the hardened layer having a lower refractive index than...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D175/14C09D167/06C09D7/12
Inventor 虞明东袁慧雅王锐涛缪慧韩莲
Owner SHANGHAI WEIKAI CHEM
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