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Water-resistant UV-cured resin composition, preparation method and applications thereof

A technology for curing resins and compositions, applied in epoxy resin coatings, coatings, polyester coatings, etc., can solve the problems of increasing production time and difficulty, failing to detect bad defects, increasing energy consumption and management costs, etc. Achieve the effect of reducing the probability of defective products, reducing the probability of scratches, and improving yield and production efficiency

Inactive Publication Date: 2020-04-21
CCS (SHANGHAI) FUNCTIONAL FILMS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of cheap prism sheet protective film on the market is about 2 yuan per square meter, and a layer of protective film will increase the production cost
The prism sheet with the protective film will also make it impossible to detect some bad defects, and then cause the bad sheet to flow out
Moreover, this layer of protective film needs to be torn off when the backlight module is finally assembled, which not only increases the production time and difficulty, but also causes static electricity to be generated on the surface of the prism sheet after the protective film is removed, and particles in the air are adsorbed
In addition to the above-mentioned problems of the protective film, in the process of sheet cutting in the cutting factory, the cleanliness, temperature and humidity of the clean room need to be strictly controlled so that the total number of 0.5μm particles in the environment is less than 300 and the humidity is low If it is less than 40%, it will not cause water vapor adsorption on the surface of the prism sheet to form scratches; therefore, for cutting factories, it is necessary to add high-grade filters and auxiliary drying systems, which greatly increases the energy consumption and management costs of production

Method used

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  • Water-resistant UV-cured resin composition, preparation method and applications thereof
  • Water-resistant UV-cured resin composition, preparation method and applications thereof
  • Water-resistant UV-cured resin composition, preparation method and applications thereof

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preparation example Construction

[0036] The present invention also provides a preparation method of the water-resistant UV curable resin composition, comprising the following steps:

[0037] (1) Weigh each component according to the formula amount, add the acrylic acid reactive monomer and photoinitiator into a light-proof reaction container, and stir at 10-30°C to pre-dissolve and disperse the photoinitiator;

[0038] (2) Acrylic acid oligomer is joined in the mixture that step (1) obtains, continue to stir;

[0039] (3) Add the auxiliary agent and the hydrophobic agent to the mixture obtained in the step (2) at the same time, and stir until it is transparent and uniform, so as to obtain a water-resistant UV curable resin composition.

[0040] The stirring speed in steps (1) to (3) is a medium-speed stirring of 400-600 rpm / min. Moreover, the stirring time is between 20 and 60 minutes, which can be selected and adjusted according to the actual situation.

[0041] Wherein, the acrylic active monomer includes...

Embodiment 1

[0049] Weigh each component according to the formula amount in Table 1, first add o-phenylphenoxyethyl acrylate and photoinitiator PI 184 into a light-proof reaction vessel, stir at 10°C and a medium speed of about 400rpm / min for 30min Pre-dissolve and disperse photoinitiator PI 184 to obtain mixed solution A1; then add polyurethane acrylic resin to mixed solution A1 and continue to stir at a medium speed of about 500rpm / min for 30min to obtain mixed solution B1; then add the additive BYK-3530 and hydrophobic agent BYK-333 were added to the mixed solution B1 at the same time, stirred at a medium speed of about 400rpm / min for 20min until the solution was uniformly mixed and transparent, and the water-resistant UV curable resin composition 1 was obtained after the stirring was stopped. This UV curable resin composition 1 is coated on the PET film by the pressure roller method, and the irradiation dose is about 0.2J / cm 2 UV light, which is a metal halide lamp with a main waveleng...

Embodiment 2

[0051] Weigh each component according to the formulation amount in Table 1, first add (ethoxy) phenol acrylate and photoinitiator PI 1173 into a reaction vessel protected from light, stir at 15°C and a medium speed of about 400rpm / min for 40min The photoinitiator PI 1173 was pre-dissolved and dispersed to obtain the mixed solution A2; then the polyurethane acrylic resin was added to the mixed solution A2 and then stirred at a medium speed of about 550rpm / min for 40min to obtain the mixed solution B2; then the auxiliary agent BYK -3535 and hydrophobic agent BYK-3500 were added to the mixed solution B2 at the same time, stirred at a medium speed of about 450rpm / min for 20min until the solution was uniformly mixed and transparent, and the water-resistant UV curable resin composition 2 was obtained after the stirring was stopped. This UV curable resin composition 2 is coated on the PET film by the pressure roller method, and the irradiation dose is about 0.25J / cm 2 UV light, which...

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Abstract

The invention discloses a water-resistant UV cured resin composition, which comprises the following components in parts by weight: 10-50 parts of an acrylic acid active monomer, 5-50 parts of an acrylic acid oligomer, 1-10 parts of a photoinitiator, 0.1-5 parts of an assistant and 0.5-2 parts of a hydrophobic agent. The invention also discloses a preparation method and applications of the water-resistant UV cured resin composition. The surface tension of the water-resistant UV-cured resin composition is increased, and the hydrophilic performance is obviously reduced, so that the hydrophobic performance is obviously improved. The invention also provides a preparation method and applications of the water-resistant UV-cured resin composition. The water-resistant UV-cured resin composition isconverted into a solid sheet under the irradiation of ultraviolet light through simple and easy-to-operate preparation steps so as to be used for preparing a prismatic lens for a liquid crystal display device.

Description

technical field [0001] The invention relates to a water-resistant UV curable resin composition and its preparation method and application. Background technique [0002] With the popularity of TFT-LCD liquid crystal display technology, the demand for backlight modules and related optical films is also increasing. The prism sheet is produced by roll-to-roll (roll to roll); after the PET roll is put on the machine and unrolled, a liquid UV curable resin is coated on its surface, and the liquid resin is coated by structural transfer and UV curing. It becomes a solid material, and finally it is harvested as a coil. In actual use, it is necessary to send the final produced coils to the cutting factory and use a special hydraulic cutting machine to cut them into sheets, and the obtained sheets are basically rectangular. In the cutting process of the cutting factory, the cut prism sheets are exposed to the external environment. Once the temperature, humidity, and cleanliness of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D167/06C09D163/10C08J7/04C08L67/02
CPCC08J2367/02C08J2463/10C08J2467/06C08J2475/14C08L2205/03C09D163/10C09D167/06C09D175/14C08L67/06C08L63/10
Inventor 周鹏曹建沈渊
Owner CCS (SHANGHAI) FUNCTIONAL FILMS IND CO LTD
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