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A kind of ultraviolet light mixed curing adhesive for display and preparation method thereof

A technology of ultraviolet light and adhesive, applied in the direction of adhesive, etc., can solve the problem of affecting the optical effect of the display screen, and achieve the effect of reducing the volume shrinkage rate, high bonding strength and fast curing speed

Active Publication Date: 2019-04-09
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production process, adhesives are needed between these glass substrates and optical films. The refractive index of some commonly used adhesives is below 1.30. Although the adhesive layer is very thin, the low refractive index adhesive The connection layer will still affect the optical effect of the display

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of ultraviolet light mixed curing adhesive for display, it comprises components and parts by weight thereof:

[0037] Polyurethane grafting modified sulfur-containing epoxy acrylate monoester with 70% grafting rate 72

[0038] Glycidyl acrylate 6

[0039] 1,4-Butanediol diacrylate 8

[0040] Triethylene glycol diacrylate 6

[0041] 2-Hydroxy-2-methyl-1-phenyl-1-propanone 3

[0042] Aliphatic modified amine 5

[0043] The preparation method of the polyurethane graft-modified sulfur-containing epoxy acrylate with a graft rate of 70% is:

[0044] In the first step, add 3mol of epichlorohydrin into a 1000mL three-necked flask, stir and heat to 50°C, then add 0.5mol of 1,6-hexanedithiol, then add about 300mL of 20% NaOH solution, and stir for 2 hours , cooled to room temperature, added 3 times the volume of diethyl ether and 4 times the volume of distilled water, separated the organic layer, washed with water until neutral, dried with anhydrous magnesium sulfate,...

Embodiment 2

[0050] A kind of ultraviolet light mixed curing adhesive for display, it comprises components and parts by weight thereof:

[0051] The grafting rate is 100% polyurethane graft modified sulfur-containing epoxy acrylate monoester 80

[0052] Hydroxyethyl Acrylate 5

[0053] Dipropylene glycol diacrylate 6

[0054] Trimethylolpropane Triacrylate 3

[0055] 1-Hydroxycyclohexyl phenyl ketone 3

[0056] Dicyandiamide 3

[0057] The preparation method of described graft rate 100% polyurethane graft modification sulfur-containing epoxy acrylate is:

[0058] In the first step, add 3mol of epichlorohydrin into a 1000mL three-necked flask, stir and heat to 65°C, then add 0.6mol of 2,5-dimercaptothiadiazole, then add about 300mL of 18% NaOH solution, and stir to react 1h, cooled to room temperature, added 3 times the volume of diethyl ether and 3 times the volume of distilled water, separated the organic layer, washed with water until neutral, dried with anhydrous magnesium sulfate,...

Embodiment 3

[0064] A kind of ultraviolet light mixed curing adhesive for display, it comprises components and parts by weight thereof:

[0065] Polyurethane grafting modified sulfur-containing epoxy acrylate monoester 60 with a grafting rate of 50%

[0066] Hydroxypropyl Acrylate 5

[0067] Diethylene glycol diacrylate phthalate 8

[0068] Propoxylated Neopentyl Glycol Diacrylate 10

[0069] Ethoxylated Trimethylolpropane Triacrylate 10

[0070] Isopropylthioxanthone 3

[0071] Diethylaminopropylamine 4

[0072] The preparation method of the polyurethane grafting modified sulfur-containing epoxy acrylate of described graft rate 50% is:

[0073] In the first step, add 3mol of epichlorohydrin into a 1000mL three-necked flask, stir and heat to 60°C, then add 0.6mol of 4,4'-dimercaptodiphenylsulfide, and then add about 300mL of 15% NaOH solution , stirred and reacted for 1 h, cooled to room temperature, added 4 times the volume of diethyl ether and 5 times the volume of distilled water,...

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Abstract

The invention provides an ultraviolet mixing solidifying adhesive for a display and a preparation method thereof.The ultraviolet mixing solidifying adhesive for the display is prepared from, by weight, 40-90 parts of polyurethane graft modification sulfur-containing epoxy monoacrylate with the grafting ratio being 50% or above, 10-45 parts of an activated thinner, 1-5 parts of a photoinitiator and 1-10 parts of a thermal curing agent.By adopting the technical scheme, the adhesive is cured with the mixture of ultraviolet light and heat, has the high bonding strength for glass base materials and the like, meanwhile has the high refractivity, can meet the requirement for adhesion fixation of optical components in the display, and can also solve the problem that an existing adhesive is low in refractive index and the like, wherein the refractive index of the adhesive is 1.50 or above.

Description

technical field [0001] The invention belongs to the technical field of adhesives, in particular to an ultraviolet light mixing and curing adhesive for displays and a preparation method thereof. Background technique [0002] Optical materials mainly include inorganic materials and organic (polymer) materials. The refractive index of an optical material is one of the most important indicators of its optical performance and has a decisive impact on the application of the material. Inorganic optical materials (commonly known as "optical glass") have a long history and many varieties. n D=1.437-1.935, including colorless optical glass,) colored optical glass, radiation-resistant optical glass, radiation-resistant glass and optical quartz glass, etc., are widely used in the industry to manufacture lenses, prisms, mirrors, windows, etc. of optical instruments . The refractive index of inorganic optical materials can be selected in a wide range, with high refractive index, good l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J187/00C08G81/00C08G18/38C08G18/67C08G18/48C08G59/02C08G59/17
CPCC08G18/3876C08G18/4825C08G18/672C08G59/022C08G59/1466C08G81/00C09J187/005
Inventor 张霞刘红波曹喻霖田红梅
Owner SHENZHEN POLYTECHNIC
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