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A high-efficiency uv curing adhesive

A curing glue, high-efficiency technology, applied in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problems of low light curing efficiency, insufficient toughness, poor aging resistance, etc., and achieve high activity , Light curing speed, easy curing effect

Active Publication Date: 2020-11-13
NINGBO KLITE ELECTRIC MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of wide UV curing band, low photo curing efficiency, poor aging resistance after curing and insufficient toughness in the prior art, and provide a UV curing with narrow band, high photo curing efficiency and resin curing A high-efficiency UV curing adhesive with excellent post-aging resistance and good toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-efficiency UV curing adhesive, the curing adhesive is composed of the following components according to mass percentage: 60% polyurethane acrylate prepolymer, 18% isobornyl acrylate prepolymer, 12% hydroxyethyl methacrylate, active Borosilicate tackifier 5%, 1-hydroxy-cyclohexyl-phenyl ketone 2%, benzoin dimethyl ether 1%, γ-(2,3-epoxypropoxy)propyltrimethoxysilane 0.5 %, stabilizer 0.5%, hydroquinone 0.5% and leveling agent 0.5%.

[0028] The preparation method of described polyurethane acrylate prepolymer is as follows,

[0029] (a) Synthesis of isocyanate-terminated acrylate prepolymer: under the protection of nitrogen, add 100 parts by mass of toluene to the reactor, then add 40 parts of toluene diisocyanate, stir evenly, and dropwise add 12 parts of hydroxyethyl acrylate with 1 part of dibutyltin dilaurate, control the temperature between 65°C, stir and react for 2 hours, then raise the temperature to 85°C, and continue the reaction for 30 minutes to obtain...

Embodiment 2

[0036] A high-efficiency UV curing adhesive, the curing adhesive is composed of the following components according to mass percentage: 75% polyurethane acrylate prepolymer, 5% isobornyl acrylate prepolymer, 10% hydroxyethyl methacrylate, active Borosilicate tackifier 6%, 1-hydroxy-cyclohexyl-phenyl ketone 1%, benzoin dimethyl ether 1.5%, β-(3,4-epoxycyclohexyl) ethyl trimethoxysilane 0.2% , 0.3% stabilizer, 0.5% p-hydroxyanisole and 0.5% leveling agent.

[0037] The preparation method of described polyurethane acrylate prepolymer is as follows,

[0038] (a) Synthesis of isocyanate-terminated acrylate prepolymer: under the protection of nitrogen, add 100 parts by mass of toluene to the reactor, then add 60 parts of diphenylmethane diisocyanate, stir well and add Add 16 parts of hydroxyethyl methacrylate containing 2 parts of dibutyltin dilaurate dropwise, control the temperature between 68°C, stir and react for 4 hours, then raise the temperature to 85°C, and continue the reac...

Embodiment 3

[0045] A high-efficiency UV curing adhesive, the curing adhesive is composed of the following components according to mass percentage: 60% polyurethane acrylate prepolymer, 18% isobornyl acrylate prepolymer, 10% hydroxyethyl methacrylate, active Borosilicate tackifier 6%, 1-hydroxy-cyclohexyl-phenyl ketone 2%, benzoin dimethyl ether 1%, β-(3,4-epoxycyclohexyl) ethyl trimethoxysilane 0.5% , stabilizer 1%, 2-tert-butyl hydroquinone 0.5% and leveling agent 1%.

[0046] The preparation method of described polyurethane acrylate prepolymer is as follows,

[0047] (a) Synthesis of isocyanate-terminated acrylate prepolymer: under the protection of nitrogen, add 100 parts by mass of toluene to the reaction kettle, and then add 60 parts of 1,6-hexamethylene diisocyanate, stir evenly and pour Add 14 parts of hydroxypropyl acrylate containing 1 part of dibutyltin dilaurate dropwise, control the temperature between 66°C, stir and react for 3 hours, then increase the temperature to 85°C, a...

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Abstract

The invention discloses a high-efficiency ultraviolet (UV) curing adhesive. The UV curing adhesive consists of the following components in percentage by mass: 60-75% of a polyurethane acrylate prepolymer, 10-20% of an isobornyl acrylate prepolymer, 5-20% of hydroxyethyl methacrylate, 5-15% of an active boron silicon tackifier, 1-5% of 1-hydroxy-cyclohexyl-phenyl ketone, 1-5% of 2,2-dimethoxy-2-phenylacetophenone, 0-2% of an adhesion promoter, 0-2% of a stabilizer, 0.5-1% of a polymerization inhibitor and 0-2% of a leveling agent. The UV curing adhesive has the following beneficial effects: (1)the ultraviolet curing band is narrow; (2) the photo-curing efficiency is high; (3) the aging resistance of cured resin is excellent; and (4) the cured product has good toughness.

Description

technical field [0001] The invention relates to an adhesive, in particular to a high-efficiency UV curing adhesive. Background technique [0002] According to the wavelength, ultraviolet rays can be divided into long-wave ultraviolet (UVA), medium-wave ultraviolet (UVB) and short-wave ultraviolet (UVC). Curing, for example, in the field of LED lamps, the lamp cap and the lamp body are connected with UV glue, and then cured with UVA. However, the power of commonly used UV curing machines is from 250W-20KW, and the spectral energy distribution is centered on 365nm, with radiation between 350nm and 450nm. Although UV glue is also suitable for this wavelength range, this wavelength range is often far beyond The curing wavelength of UV glue itself, so its efficiency is low. However, the wavelength range of the existing UV curing machine dedicated to curing LED lamps is relatively narrow, such as Hongli 380-420nm, so a UV glue suitable for this wavelength is needed, otherwise th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J133/08C09J11/08C09J11/06C08G77/398
CPCC08G77/398C08L2205/03C08L2205/035C09J11/06C09J11/08C09J175/14C08L33/08C08L83/08C08K5/5435C08L23/28
Inventor 张权姚斌雄
Owner NINGBO KLITE ELECTRIC MFG
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