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A UV curing adhesive for LED curing of curved screen film

A technology of ultraviolet light and curved screen, which is applied in the direction of adhesive, adhesive type, polyurea/polyurethane adhesive, etc., can solve the problem of weak adhesion of the edge of the tempered film, achieve low hardness of the adhesive layer, low heat release, The effect of improving toughness

Active Publication Date: 2021-08-31
YANTAI SEAYU NEW MATERIALS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the deficiencies in the existing curved screen film technology, to provide an LED-cured UV-curable adhesive for curved screen film and its preparation method, which can solve the problem that the edge of the tempered film is not firmly pasted. , and can be quickly cured, strong cohesion, can achieve the whole piece of peeling, but also play a certain shock absorption effect

Method used

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  • A UV curing adhesive for LED curing of curved screen film
  • A UV curing adhesive for LED curing of curved screen film
  • A UV curing adhesive for LED curing of curved screen film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Low viscosity difunctional urethane acrylates are prepared according to the following steps:

[0023] Add 2.2 moles of MOI into a three-necked flask with a thermometer, heat and stir, and when the temperature reaches 60°C, add 1 mole of polyethylene glycol 1000, add the catalyst dibutyltin dilaurate, raise the temperature to 70°C, and react for 2 to 3 hours. Use an infrared spectrometer to analyze the content of OH groups. When the peak of OH completely disappears, stop the reaction to obtain low-viscosity difunctional polyurethane acrylate.

[0024] A UV curing adhesive for LED curing of curved screen film, prepared according to the following steps: raw materials in parts by weight, 32 parts of Sartomer's CN8881, 15 parts of the above-mentioned self-made low-viscosity bifunctional polyurethane polyurethane Add acrylate, 20 parts of isobornyl acrylate, 24 parts of tetrahydrofuran acrylate, 0.05 parts of p-benzoquinone, and 2.15 parts of silane coupling agent KH570 into ...

Embodiment 2

[0026] Low viscosity difunctional urethane acrylates are prepared according to the following steps:

[0027] Add 2.2 moles of AOI into a three-necked flask with a thermometer, heat and stir, when the temperature reaches 55°C, add 1 mole of polypropylene glycol 600, add the catalyst stannous octoate, raise the temperature to 75°C, react for 2 to 3 hours, and analyze with an infrared spectrometer When the peak of OH groups disappears completely, the reaction is stopped to obtain low-viscosity difunctional polyurethane acrylate.

[0028] A UV-curable adhesive used for LED curing of curved screen film, prepared according to the following steps: raw materials in parts by weight, 45 parts of BR-744BT from Dymax Corporation, 12 parts of the above-mentioned self-made low-viscosity bifunctional Polyurethane urethane acrylate, 10 parts of isobornyl methacrylate, 30 parts of isooctyl acrylate, 0.1 part of hydroquinone, and 1.4 parts of silane coupling agent KH551 are added to the mixer i...

Embodiment 3

[0030] Low viscosity difunctional urethane acrylates are prepared according to the following steps:

[0031] Add 1 mole of MOI and 1.2 moles of AOI into a three-necked flask with a thermometer, heat and stir, when the temperature reaches 65°C, add 1 mole of polyethylene glycol 1500, add the catalyst dibutyltin dilaurate, heat up to 75°C, and react After 2 to 3 hours, analyze the content of OH groups with an infrared spectrometer, and stop the reaction when the peak of OH completely disappears to obtain low-viscosity difunctional polyurethane acrylate.

[0032]A UV-curable adhesive for LED curing of curved screen film, prepared according to the following steps: raw materials in parts by weight, 54 parts of DR-U384 of Changxing Company, 30 parts of the above-mentioned self-made low-viscosity bifunctional polyurethane polyurethane Add acrylate, 30 parts of isooctyl methacrylate, 0.2 part of p-hydroxyanisole, and 1 part of silane coupling agent KH551 into the mixer in sequence. Th...

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Abstract

The invention discloses an LED-cured UV-curable adhesive used for curved screen film sticking, which is prepared from the following raw materials in parts by weight: 30-60 parts of aliphatic urethane acrylate, low-viscosity bifunctional urethane acrylate 10-30 parts, 30-50 parts of acrylic reactive diluent, 3-8 parts of photoinitiator, 0.05-0.2 parts of polymerization inhibitor, 1-3 parts of silane coupling agent. The self-made low-viscosity difunctional polyurethane acrylate is a polyether type acrylic resin synthesized from monoisocyanate monomer, polyether diol and catalyst. The LED-cured UV adhesive for curved screen film sticking provided by the present invention has low viscosity while improving the toughness of the product. It can solve the problem of weak adhesion of the edge of the tempered film when used for curved screen film sticking, and the hardness of the glue layer. Low, can also play a certain role in shock absorption, can achieve rapid curing, and environmental protection and pollution reduction, improve production efficiency.

Description

technical field [0001] The invention belongs to the field of light-curing materials, and in particular relates to an ultraviolet light-curing adhesive used for LED curing of a curved screen film and a preparation method thereof. Background technique [0002] As we all know, with the development of mobile phone technology becoming more and more mature, various manufacturers have launched mobile phones with curved screens. The curved screen mainly makes use of the flexible characteristics of OLED. The side of the screen can be bent in the factory, and the curved screen can be installed on the mobile phone to maximize the use of the screen. Moreover, the curved screen mobile phone is convenient for us to hold, it fits better with the curvature of the palm of the hand, and the grip is more comfortable. The curved design can also relieve facial fatigue to a certain extent. Although the curved screen is beautiful, there are many defects. Once the mobile phone is dropped, the scre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14
CPCC08L2203/20C08L2205/025C09J175/14C08L75/14
Inventor 李不悔李峰贺国新张利文
Owner YANTAI SEAYU NEW MATERIALS CORP LTD
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