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A kind of preparation method of cured film

A technology of hardening film and mixture, applied in the direction of coating, etc., which can solve the problems of complicated process, increased cost, poor adhesion between hardened layer and substrate layer, etc.

Active Publication Date: 2022-06-28
东莞市超智新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion between the hardened layer and the substrate layer in the obtained cured film is relatively poor. In the process of preparation, it is necessary to coat a layer of precoat on the PET film substrate to improve the adhesion between the hardened layer and the substrate layer.
The pre-coating process increases the cost and complicates the process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a hardened film, comprising the steps:

[0021] (1) In parts by weight, 50 parts of hexafunctional aliphatic polyurethane acrylate (source AgiSyn 230A2), 15 parts of trimethylolpropane triacrylate, 10 parts of 1,6 hexanediol Acrylate, 5.5 parts of 2-hydroxy-methylphenylpropan-1-one, 10 parts of thermoplastic saturated co-polymer polyester (source Villon 290s), 0.25 part of hexamethylene diisocyanate based polyisocyanate (source Wanhua Chemical Q / NPU 12-2018) was evenly mixed, and then diluted with ethyl acetate to obtain a mixture;

[0022] (2) coating the above-mentioned mixture on the surface of the PET substrate layer;

[0023] (3) placing the PET substrate layer of the coated mixture obtained in step (2) in an oven and baking for 5min, and the oven temperature is controlled at 90°C;

[0024] (4) The coating is irradiated with UV light and cured to obtain a cured film.

Embodiment 2

[0026] A preparation method of a hardened film, comprising the steps:

[0027] (1) In parts by weight, 60 parts of hexafunctional aliphatic polyurethane acrylate (source AgiSyn230A2), 20 parts of trimethylolpropane triacrylate, 18 parts of 1,6 hexanediol diacrylate ester, 3.5 parts of 2-hydroxy-methylphenylpropan-1-one, 15 parts of thermoplastic saturated co-polymer polyester (source Villon 290s), 0.75 part of hexamethylene diisocyanate based polyisocyanate (source Wan Hua Chemicals Q / NPU 12-2018) was evenly mixed, and then diluted with ethyl acetate to obtain a mixture;

[0028] (2) coating the above-mentioned mixture on the surface of the PET substrate layer;

[0029] (3) placing the PET substrate layer of the coated mixture obtained in step (2) in an oven and baking for 7min, and the oven temperature is controlled at 120°C;

[0030] (4) The coating is irradiated with UV light and cured to obtain a cured film.

Embodiment 3

[0032] A preparation method of a hardened film, comprising the steps:

[0033] (1) In parts by weight, 55 parts of hexafunctional aliphatic polyurethane acrylate (source AgiSyn 230A2), 12 parts of trimethylolpropane triacrylate, 14 parts of 1,6 hexanediol diacrylate Acrylate, 4 parts of 2-hydroxy-methylphenylpropan-1-one, 8 parts of thermoplastic saturated co-polymer polyester (source Villon 290s), 0.5 part of hexamethylene diisocyanate based polyisocyanate (source Wanhua Chemical Q / NPU 12-2018) was evenly mixed, and then diluted with ethyl acetate to obtain a mixture;

[0034] (2) coating the above-mentioned mixture on the surface of the PET substrate layer;

[0035] (3) placing the PET substrate layer of the coated mixture obtained in step (2) in an oven to bake for 6 minutes, and the oven temperature is controlled at 100°C;

[0036] (4) The coating is irradiated with UV light and cured to obtain a cured film.

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Abstract

The invention provides a method for preparing a hardened film, comprising steps: (1) mixing the preparation raw materials and diluting them with a solvent to obtain the mixture; (2) coating the mixture on the surface of a substrate layer; (3) placing the mixture in an oven to dry Bake for a certain period of time, and the temperature of the oven is controlled at 80°C to 140°C; (4) UV light is used to irradiate the coating to cure it to obtain a hardened film; the raw materials for preparation include 50 to 60 parts by weight of aliphatic polymer Urethane acrylate, 12-20 parts of trimethylolpropane triacrylate, 10-18 parts of 1,6-hexanediol diacrylate, 3.5-5.5 parts of 2-hydroxy-methylphenyl Propan-1-ketone, 8-15 parts of thermoplastic saturated copolyester, 0.25-0.75 parts of hexamethylene diisocyanate-based polyisocyanate. The hardened film prepared by this method has excellent adhesion, wear resistance and high hardness.

Description

technical field [0001] The present invention relates to the technical field of hardened films, and more particularly to a preparation method of hardened films. Background technique [0002] In modern industrial production, it is known to prepare a hardened film by coating a hardening liquid on a PET film substrate and curing it with UV light to form a hardened layer, so that it has certain hardness and wear resistance. However, in the obtained hardened film, the adhesion between the hardened layer and the substrate layer is poor, and a precoat layer needs to be coated on the PET film substrate during the preparation process to improve the adhesion between the hardened layer and the substrate layer. The pre-coating process increases the cost and complicates the process. The present application provides a hardened film with good adhesion that can be obtained without coating a precoat layer on a PET film substrate. SUMMARY OF THE INVENTION [0003] The purpose of the presen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/046C09D4/02C09D4/06C08L67/02
CPCC09D4/06C08J2367/02C08J2451/00
Inventor 李辉
Owner 东莞市超智新材料有限公司
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