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A kind of ultraviolet curing optical adhesive for glass optical device and preparation method thereof

A technology of optical devices and optical adhesives, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problem of bonding and fixing glass optical devices, which do not have high refraction and cannot be used as a bonding layer and other problems, to achieve good alcohol resistance and water resistance, high refraction, strong adhesive strength effect

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

Most of the existing glass adhesives do not have high refractive properties. Although the adhesive layer is very thin, the adhesive layer with low refractive index will still affect the optical effect of glass optical devices. With the increasing demand for product quality , the adhesive used for bonding and fixing glass optical devices also needs to be high refractive
[0006] At present, the common organic optical materials are polymethyl methacrylate, polystyrene, polycarbonate, poly-4-methyl-1-pentene, polydiallyl diglycol dicarbonate, polyamide and other optical materials. These optical plastics are mainly used as matrix materials (plastics) to replace some inorganic optical materials to prepare lenses, optical films, prisms and other components, which are used in optical instruments and other equipment, and cannot be used as adhesive layers for glass optical devices. fixed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A UV-curable optical adhesive for glass optical devices, comprising the following components and parts by weight:

[0034] Sulfur-containing polyurethane graft-modified sulfur-containing epoxy acrylate with 100% graft modification rate 75

[0035] Hydroxyethyl Acrylate 5

[0036] 1,4-Butanediol diacrylate 10

[0037] Tripropylene glycol diacrylate 6

[0038] 2-Hydroxy-2-methyl-1-phenyl-1-propanone 4

[0039] The preparation method of described sulfur-containing polyurethane graft modification sulfur-containing epoxy acrylate is:

[0040] In the first step, add 3 mol of epichlorohydrin into a 1000 mL three-necked flask, stir and heat to 60°C, then add 0.3 mol of 1,8-octanedithiol, then add about 200 mL of 20% NaOH solution, and stir for 0.5 h, cooled to room temperature, added 2 times the volume of diethyl ether and 2 times the volume of distilled water, separated the organic layer, washed with water until neutral, dried with anhydrous magnesium sulfate, filtered, an...

Embodiment 2

[0046] A UV-curable optical adhesive for glass optical devices, comprising the following components and parts by weight:

[0047] Sulfur-containing polyurethane graft-modified sulfur-containing epoxy acrylate with a graft modification rate of 80% 65

[0048] 1,6-Hexanediol diacrylate 15

[0049] Dipropylene glycol diacrylate 10

[0050] Trimethylolpropane Triacrylate 5

[0051] 2-Hydroxy-2-methyl-1-phenyl-1-propanone 3

[0052] 1-Hydroxycyclohexylphenyl ketone 2

[0053] The preparation method of described sulfur-containing polyurethane graft modification sulfur-containing epoxy acrylate is:

[0054] In the first step, add 4mol of epichlorohydrin into a 1000mL three-necked flask, stir and heat to 60°C, then add 0.4mol of 4,4'-dimercaptodiphenylsulfide, and then add about 300mL of 20% NaOH solution, Stir the reaction for 0.5 h, cool to room temperature, add 2 times the volume of diethyl ether and 2 times the volume of distilled water, separate the organic layer, wash with ...

Embodiment 3

[0060] A UV-curable optical adhesive for glass optical devices, comprising the following components and parts by weight:

[0061] Sulfur-containing polyurethane graft-modified sulfur-containing epoxy acrylate with a graft modification rate of 60% 55

[0062] Butyl acrylate 5

[0063] Tripropylene glycol diacrylate 10

[0064] Propoxylated Neopentyl Glycol Diacrylate 20

[0065] Triethylene glycol diacrylate 6

[0066] 1-Hydroxycyclohexylphenyl ketone 2

[0067] 1-Chloro-4-propoxythioxanthone 2

[0068] The preparation method of described sulfur-containing polyurethane graft modification sulfur-containing epoxy acrylate is:

[0069] In the first step, add 3 mol of epichlorohydrin into a 1000 mL three-necked flask, stir and heat to 60°C, then add 0.3 mol of 1,9-nonanedithiol, then add about 200 mL of 20% NaOH solution, and stir for 0.5 h, cooled to room temperature, added 2 times the volume of diethyl ether and 2 times the volume of distilled water, separated the organic l...

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Abstract

The invention provides an ultraviolet-cured optical adhesive for a glass optical device and a preparation method of the adhesive.The ultraviolet-cured optical adhesive for the glass optical device is prepared from, by weight, 40-90 parts of sulfur-containing polyurethane graft-modified sulfur-containing epoxy acrylate of which the graft-modification rate is 50% or above, 10-55 parts of reactive diluent and 1-5 parts of photoinitiator.The ultraviolet-cured optical adhesive for the glass optical device can be rapidly cured under ultraviolet irradiation, has high adhesive strength to a glass substrate and has high refractivity; the refractive index is larger than or equal to 1.50, the adhesive fixing requirement of the glass optical device can be met, and the defect that an existing adhesive for the glass optical device is low in refractive index is overcome.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an ultraviolet light curing optical adhesive for glass optical devices and a preparation method thereof. Background technique [0002] Optical materials are widely used in many fields such as spectacle lenses, optical lenses, optical instruments, LCD / LED displays, and information storage. From a structural point of view, optical materials are divided into two categories: 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. [0003] Inorganic optical materials (optical glass) have a long history and many varieties, and their refractive index n D=1.437-1.935, including colorless optical glass, colored optical glass, radiation-resistant optical glass, radiation-proof glass and optical quartz glass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C08G18/67C08G18/65C08G18/58C08G18/38C08G18/12C08G59/17C08G59/02
CPCC08G18/3876C08G18/585C08G18/672C08G18/8054C08G18/8064C08G59/02C08G59/1466C09J175/14
Inventor 刘红波张霞张武英林峰
Owner SHENZHEN POLYTECHNIC
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