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High wear-resistant ultraviolet curing diffusion film coating composition for PET (polyethylene terephthalate)

A diffusion film and ultraviolet light technology, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as unsatisfactory surface effects, poor haze adjustability, slow curing speed, etc., and achieve huge environmental benefits And economic benefits, hardness enhancement, energy saving effect

Inactive Publication Date: 2015-01-28
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the diffusion film prepared by heat-curing coating has the following disadvantages: high energy consumption, slow curing speed, and poor scratch resistance; at present, there is another type of diffusion film that is cured by solvent-free ultraviolet light (no matting agent), and the haze effect on the surface uses a template Embossing, the disadvantage of this method: poor adjustability of haze, unsatisfactory surface effect

Method used

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  • High wear-resistant ultraviolet curing diffusion film coating composition for PET (polyethylene terephthalate)
  • High wear-resistant ultraviolet curing diffusion film coating composition for PET (polyethylene terephthalate)
  • High wear-resistant ultraviolet curing diffusion film coating composition for PET (polyethylene terephthalate)

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Effect test

Embodiment 1

[0055] This embodiment relates to a high wear-resistant UV-curable diffusion film coating composition for PET, including the components and parts by weight shown in Table 1. During preparation, first add the components except the matting agent and stir evenly, then gradually add the matting agent under the condition of high-speed stirring (4000r / min), and continue stirring for 30 minutes.

[0056] The paint is coated on the PET film with a No. 6 wire bar, and after drying in an oven for 1 minute (60°C), it is heated by 700mJ / cm 2 The energy curing, the performance is as follows: hardness 3H, 500g; wear resistance 10 times / 1000g; adhesion 5B; haze 11.5, light transmittance 92.6%.

Embodiment 2

[0058] This embodiment relates to a high wear-resistant UV-curable diffusion film coating composition for PET, including the components and parts by weight shown in Table 1. The specific preparation is the same as in Example 1.

[0059]The paint is coated on the PET film with a No. 6 wire bar, and after infrared drying for 1 minute (60°C), it is heated by 700mJ / cm 2 The energy curing, the performance is as follows: hardness 3H, 500g; wear resistance 15 times / 1000g; adhesion 5B; haze 12.7, light transmittance 92.5%.

Embodiment 3

[0061] This embodiment relates to a high wear-resistant UV-curable diffusion film coating composition for PET, including the components and parts by weight shown in Table 1. The specific preparation is the same as in Example 1.

[0062] The paint is coated on the PET film with a No. 6 wire bar, and after infrared drying for 1 minute (60°C), it is heated by 700mJ / cm 2 The energy curing, the performance is as follows: hardness 3H, 500g; wear resistance 13 times / 1000g; adhesion 5B; haze 8.9, light transmittance 93.1%.

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Abstract

The invention discloses a high wear-resistant ultraviolet curing diffusion film coating composition for PET (polyethylene terephthalate). The composition comprises the following components in parts by weight: 35-50 parts of acrylate resin, 15-25 parts of a monomer, 5-9 parts of a photoinitiator, 115-120 parts of a solvent, 0.05-0.5 part of a leveling agent and 7-15 parts of a matting agent. The acrylate resin is one or more of highly functional aliphatic urethane acrylate resin, aliphatic polyester acrylate resin, aliphatic urethane methacrylate resin and aliphatic polyester methacrylate resin; and the matting agent is one or more of pure polyester matting particles, gas-phase silicon dioxide micro-powder, wax powder, polymethylurea resin micropowder, aluminum oxide, polymethyl methacrylate and white carbon black, wherein the particle size is micron grade. Compared with the prior art, the high wear-resistant ultraviolet curing diffusion film coating composition for PET is energy-saving, efficient and high in haze adjustability, the wear resistance can be improved to 10 times / 1000g and the practicality is higher.

Description

technical field [0001] The invention belongs to the field of ultraviolet light curing coatings, in particular to a high wear-resistant ultraviolet light curing diffusion film coating composition for PET. Background technique [0002] Ultraviolet curing coatings (UV coatings) have the advantages of high efficiency, energy saving, wide applicability, and room temperature curing, and have been widely used in electronics, communications, chemicals, machinery, furniture, inks and other fields. [0003] In the backlight unit of a liquid crystal display, a light-diffusing film is used to increase the brightness in the front direction without the light-diffusing pattern of the light-guiding film appearing. The light-diffusing film is a PET (polyethylene terephthalate) substrate coated with a light-diffusing coating made of varnish. Usually, a thermosetting coating is used as a light-curing coating, and it is coated on a substrate by roller coating, screen printing, etc., and is cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D167/06C09D7/12C08J7/04
CPCC09D175/14C08L2205/03C08L2205/035C09D7/61C09D7/65
Inventor 虞明东李桐缪慧
Owner SHANGHAI WEIKAI CHEM
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