Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of oled protective glue and preparation method thereof

A technology of protective glue and main resin, applied in the direction of adhesives, polyether adhesives, non-polymer adhesive additives, etc., can solve the problems of high cost, complicated process, high shrinkage rate, etc., achieve small impact, simple process, easy-to-handle effects

Active Publication Date: 2021-02-19
东莞市贝特利新材料有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of water and oxygen insulation is completed by substrate electroplating, which is costly and complicated. Therefore, packaging and protection in the form of a resin protective layer has become the focus of research in this field.
[0004] However, the water-proof and oxygen-barrier resin protective layers in the prior art still need to be improved, and the stability is not high, and there are technical problems of high shrinkage and low adhesion.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of oled protective glue and preparation method thereof
  • A kind of oled protective glue and preparation method thereof
  • A kind of oled protective glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0082] The present invention also provides a method for preparing the OLED protective glue described in the above technical solution, comprising the following steps:

[0083] a) mixing the main resin, photocurable monomer, photoinitiator and antioxidant to obtain a reaction mixture;

[0084] b) coating and curing the reaction mixture obtained in step a) to obtain an OLED protective glue.

[0085] In the invention, firstly, the main resin, photocurable monomer, photoinitiator and antioxidant are mixed to obtain a reaction mixture. In the present invention, the main resin, photocurable monomer, photoinitiator and antioxidant are the same as those described in the above technical solution, and will not be repeated here.

[0086]In the present invention, the mixing method is preferably airtight dispersion stirring; the present invention has no special limitation on the airtight dispersion stirring device, and a closed reactor with stirring well known to those skilled in the art c...

Embodiment 1

[0093] (1) The reactor was purged twice with nitrogen, and 100g Kraso was added TM LBH-10000 (molecular weight 10000) and 1g of catalyst KOH, at 130°C and a pressure of 0.25MPa, feed 0.83g of ethylene oxide (EO), react for 4 hours, cool to 60°C, add 3.5g of 20% phosphoric acid After the treatment, viscous liquid A-1 (98g) of hydroxyl-terminated diethoxy polybutadiene was obtained;

[0094] (2) Weigh 90g of A-1, with 1.46g of acrylic acid (AA), 100g of solvent (toluene and cyclohexane with a mass ratio of 1:1), 1.5g of catalyst p-toluenesulfonic acid, 0.01g of polymerization inhibitor Agent hydroquinone methyl ether (MEHQ), 0.1g antioxidant 2,6-di-tert-butyl-4-methylphenol (BHT) mixed, under the condition of 110 ℃, reacted for 7h, and then washed with alkali, water, Distillation under reduced pressure gave photocurable resin A1 (82.1 g).

[0095] The structural formula of the photocurable resin A1 obtained in Example 1 of the present invention is:

[0096]

[0097] The h...

Embodiment 2

[0099] Weigh 90g of A-1 obtained in step (1) of Example 1, add 7.53g of isophorone diisocyanate (IPDI), 0.1g of organic bismuth catalyst into the reaction kettle, pass through the nitrogen protection, at 85 ℃ ~ 90 ℃ conditions , reacted for 4 hours, and then added 1.76g of hydroxyethyl acrylate, and the final product was photocurable resin B1 (97g).

[0100] The structural formula of the photocurable resin B1 obtained in Example 2 of the present invention is:

[0101]

[0102] For the hydrogen nuclear magnetic resonance spectrum of the photocurable resin B1 provided in Example 2 of the present invention, see figure 2 shown.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
adhesivityaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention also provides an OLED protective glue, which is prepared from raw materials comprising the following components: 10 to 60 parts by weight of a main body resin; 10 to 70 parts by weight of a photocurable monomer; 1 part by weight of a photoinitiator ~5 parts by weight; 0.1 ~3 parts by weight of antioxidant; the main resin is the photocurable resin described in the above technical solution. Compared with the prior art, the OLED protective adhesive provided by the present invention adopts a photocurable resin with a specific structure as the main resin, and with a specific amount of components, it can achieve better interaction, and the obtained OLED protective adhesive has good water-repellent properties. , Oxygen barrier performance, and good stability, low shrinkage, high adhesion. Experimental results show that the water transmittance of the OLED protective glue provided by the invention is 1×10 ‑6 ~4×10 ‑5 g / m 2 d, the oxygen transmission rate is 2×10 ‑5 ~4×10 ‑4 cm 3 / m 2 d; and has good high temperature performance, high temperature and high humidity performance and thermal shock performance, curing shrinkage rate of 1.3% to 3.5%, and adhesion of 4B to 5B.

Description

technical field [0001] The invention relates to the technical field of adhesives, and more specifically relates to an OLED protective adhesive and a preparation method thereof. Background technique [0002] OLED stands for Organic Light-Emitting Diode (Organic Light-Emitting Diode), also known as Organic Electroluminescence Display (OELD). It is mainly used in the display field. Compared with the traditional LCD, it does not need a backlight and has the characteristics of self-illumination, and the OLED display screen can be made lighter and thinner, with a wider viewing angle, which can effectively save power and reduce energy consumption. Its own mechanism is solid state, compared with liquid crystal, it has good shock resistance and is not afraid of falling; the response time is 1000 times faster than LCD, and there is no smear phenomenon in the display of moving pictures; it has good low temperature resistance and can still be used at -40°C Normal display; it can be mad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J171/02C09J11/06C09J4/02C09J4/06C08G18/69C08G18/67C08G65/28C08G65/332C08F8/14C08F8/46C08F136/06
CPCC08F8/14C08F8/46C08F136/06C08G18/672C08G18/69C08G65/2609C08G65/3322C09J4/06C09J11/06C09J171/02C09J175/14
Inventor 周传玉杨美宾黄思富雷学春胡彬陶林华
Owner 东莞市贝特利新材料有限公司