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Ultraviolet (UV) curing adhesive with high strength and high toughness

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

Inactive Publication Date: 2019-06-07
广州聚达光电有限公司
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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 Excellent post-aging resistance, good toughness, a high-strength, high-toughness UV-curable adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-strength, high-toughness UV curing adhesive, the curing adhesive is composed of the following components according to mass percentage: 60% polyurethane acrylate prepolymer, 18% isobornyl acrylate prepolymer, hydroxyethyl methacrylate 12% ester, 5% active borosilicate tackifier, 2% 1-hydroxy-cyclohexyl-phenyl ketone, 1% benzoin dimethyl ether, Y-(2,3-epoxypropoxy) propyl trimethyl 0.5% oxysilane, 0.5% stabilizer, 0.5% hydroquinone and 0.5% leveling agent.

[0029] The preparation method of described polyurethane acrylate prepolymer is as follows,

[0030] (a) Synthesis of terminal isocyanate-based acrylate prepolymer: under nitrogen protection, add 100 parts of toluene in parts by mass to the reactor, then add 40 parts of toluene diisocyanate, stir well and add to it Add 12 parts of hydroxyethyl acrylate containing 1 part of dibutyltin dilaurate dropwise, control the temperature between 65°C, stir and react for 2 hours, then raise the temperature to 85°C, and con...

Embodiment 2

[0037] A high-strength, high-toughness UV curing adhesive, the curing adhesive is composed of the following components according to mass percentage: 75% polyurethane acrylate prepolymer, 5% isobornyl acrylate prepolymer, hydroxyethyl methacrylate 10% ester, 6% active borosilicate tackifier, 1% -hydroxy-cyclohexyl-phenyl ketone, 1.5% benzoin dimethyl ether, -(3,4-epoxycyclohexyl) ethyl trimethoxysilane 0.2%, stabilizer 0.3%, p-hydroxyanisole 0.5% and leveling agent 0.5%.

[0038] The preparation method of described polyurethane acrylate prepolymer is as follows,

[0039] (a) Synthesis of terminal isocyanate-based acrylate prepolymer: under nitrogen protection, add 100 parts of toluene in parts by mass to the reactor, then add 60 parts of diphenylmethane diisocyanate, and stir evenly Then 16 parts of hydroxyethyl methacrylate containing 2 parts of dibutyltin dilaurate were added dropwise thereto, the temperature was controlled between 68°C, and the reaction was stirred for 4 ho...

Embodiment 3

[0046] A high-strength, high-toughness UV curing adhesive, the curing adhesive is composed of the following components according to mass percentage: 60% polyurethane acrylate prepolymer, 18% isobornyl acrylate prepolymer, hydroxyethyl methacrylate 10% ester, 6% active borosilicate tackifier, 2% 1-hydroxy-cyclohexyl-phenyl ketone, 1% benzoin dimethyl ether, -(3,4-epoxycyclohexyl) ethyl trimethoxy Silane 0.5%, stabilizer 1%, 2-tert-butylhydroquinone 0.5%, and leveling agent 1%.

[0047] The preparation method of described polyurethane acrylate prepolymer is as follows,

[0048] (a) Synthesis of terminal isocyanate-based acrylate prepolymer: under nitrogen protection, add 100 parts of toluene in parts by mass to the reactor, then add 60 parts of 1,6-hexamethylene diisocyanate, stir After uniformity, 14 parts of hydroxypropyl acrylate containing 1 part of dibutyltin dilaurate were added dropwise therein, the temperature was controlled between 66°C, and the reaction was stirred fo...

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Abstract

The invention discloses an ultraviolet (UV) curing adhesive with high strength and high toughness. The 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 methylacrylate, 5-15% of an active boron silicon tackifier, 1-5% of 1-hydroxy-cyclohexyl-phenyl methanone, 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 flatting agent. The preparation method disclosed by theinvention has the following beneficial effects: (1) the ultraviolet curing wave band is narrow; (2) light curing efficiency is high; (3) aging resistance is excellent after the resin is cured; and (4) toughness of the cured product is good.

Description

technical field [0001] The invention relates to a curing glue, in particular to a UV curing glue with high strength and high toughness. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J133/08C09J11/06C09J11/08
Inventor 伍淼梁家和
Owner 广州聚达光电有限公司
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