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High-light-transmittance optical transparent adhesive for pasting touch screen and synthesis method thereof

A technology of optical transparent glue and high light transmittance, which is applied in the field of electronic information, can solve problems such as corrosion electrodes, and achieve the effects of improving light transmittance, reducing light loss, and being easy to use

Active Publication Date: 2019-04-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fourth, this prior art uses acrylic acid, a common functional monomer, which is highly acidic. When the optical glue containing this monomer is used to bond optical devices containing electrodes such as touch screens, the electrodes will be corroded.

Method used

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  • High-light-transmittance optical transparent adhesive for pasting touch screen and synthesis method thereof
  • High-light-transmittance optical transparent adhesive for pasting touch screen and synthesis method thereof
  • High-light-transmittance optical transparent adhesive for pasting touch screen and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 (E1): raw material formula sees Table 1

[0047] Table 1 Embodiment 1 raw material formula table

[0048] raw material

BA

HEA

IBOMA

NVP

NDM

EA

AIBN

acetone

Bisamide

Absolute ethanol

Mass / g

20

20

5

1

0.1

70

0.4

4

8

10

[0049] Pretreatment of raw materials: butyl acrylate (BA), hydroxyethyl acrylate (HEA), isobornyl methacrylate (IBOMA), N-vinylpyrrolidone (NVP) and cross-linking agent bisamide were vacuum dehydrated for 1 h before use , the temperature of the oil bath is the same as the respective boiling points, and then the monomers (BA, HEA, IBOMA, NVP), the cross-linking agent bisamide and the solvent ethyl acetate (EA) are subjected to 3A molecular sieve adsorption and dehydration for 12h, dodecyl Mercaptan (NDM) and azobisisobutyronitrile AIBN were placed in a vacuum oven for 12 hours before use.

[0050] Add BA, HEA, IBOMA, NVP and NDM after pretreatment into...

Embodiment 2

[0051] Embodiment 2 (E2): raw material formula sees Table 2

[0052] Table 2 Example 2 formula table

[0053] raw material

BA

HPA

MMA

NMMA

NDM

EA

AIBN

acetone

Bisamide

Absolute ethanol

Mass / g

20

20

5

1

0.1

70

0.4

4

8

10

[0054] Pretreatment of raw materials: BA, hydroxypropyl acrylate (HPA), methyl methacrylate (MMA), N-methylmethacrylamide (NMMA) and cross-linking agent bisamide were vacuum dehydrated for 2 hours before use, and oil bath The pot temperature is 5°C higher than their respective boiling points, and then BA, HPA, MMA, NMMA, bisamide, EA, acetone and absolute ethanol are subjected to 4A molecular sieve adsorption and dehydration for 12 hours, dodecyl mercaptan (NDM) and azo Diisobutyronitrile AIBN was placed in a vacuum oven for 12 hours for use.

[0055] Add BA, HPA, MMA, NMMA and NDM after pretreatment into a 500ml four-neck flask according to the formula, and then add ...

Embodiment 3

[0056] Embodiment 3 (E3): raw material formula sees Table 3

[0057] Table 3 Example 3 formula table

[0058]

[0059] Raw material pretreatment: BA, hydroxyethyl methacrylate (HEMA), methyl acrylate (MA), N,N-dimethylmethacrylamide (N,N-DMMA) and cross-linking agent bisamide before use Carry out vacuum dehydration for 3 hours, and the temperature of the oil bath is 5°C higher than their respective boiling points, then BA, HEMA, MA, N,N-DMMA, bisamide, EA, acetone and absolute ethanol are subjected to 5A molecular sieve adsorption dehydration for 36 hours, ten Dialkylmercaptan (NDM) and azobisisobutyronitrile AIBN were placed in a vacuum oven for 24 hours before use.

[0060] Add the pretreated BA, HEMA, MA, N,N-DMMA and NDM into a 500ml four-neck flask according to the formula, and then add 55g of EA. The experimental device is equipped with a mechanical stirrer with digital display function, a condensation device and a thermometer. The temperature is 120r / min, the oil b...

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Abstract

The invention discloses a high-light-transmittance optical transparent adhesive for pasting a touch screen and a synthesis method thereof. The raw material formula of the high-light-transmittance optical transparent adhesive comprises, by weight, the following components: 30-50 parts of (meth) alkyl acrylate, 25-40 parts of (meth) hydroxyalkyl acrylate, 1-3 parts of a N-atom-containing polar monomer, 10-20 parts of a crosslinking agent, 0.01-0.02 part of a chain transfer agent and 0.5-1 part of a thermal initiator. The high-light-transmittance optical transparent adhesive is in a pressure-sensitive state after being cured by heat, has the advantages of moderate initial adhesive force, excellent adhesive holding force, no displacement after pasting, and difficulty in falling off, the lighttransmittance is more than 99.5%, the haze value is less than 0.1%, the refractive index is close to a glass refractive index 1.49, and the synthesis method is environment-friendly.

Description

technical field [0001] The invention belongs to optical adhesives, and in particular relates to a high-transmittance optical transparent adhesive for laminating liquid crystal display screens and a synthesis method thereof. Sensitive glue belongs to the field of electronic information technology. Background technique [0002] At present, most of the smartphone and tablet markets use direct bonding technology to eliminate the gap between the LCM (liquid crystal module) and the touch screen glass or film. When laminating glass, most touch panel factories are accustomed to using optical tape OCA lamination technology with high production efficiency and uniform thickness. This has a lot to do with the nature of OCA. OCA is suitable for small lamination surfaces such as mobile phones and tablets. In some cases, the production efficiency is high, especially heat-cured OCA, which can be cured by heating and made into a film, which is convenient and quick to use. [0003] UV curin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/38C09J133/08C08F220/18C08F220/20C08F220/14C08F220/56C08F220/54C08F226/06C08F226/10
CPCC09J7/10C09J7/385C09J133/14C09J133/26C08F220/18C08F220/20C08F220/1804C08F220/1811C08F226/10C08F226/06C08F220/14C08F220/56C08F220/54
Inventor 傅和青王顺李晓雅
Owner SOUTH CHINA UNIV OF TECH
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