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UV photocuring adhesive

A light-curing adhesive and photoinitiator technology, which is applied in the direction of adhesives, adhesive types, film/sheet adhesives, etc., can solve the problems of poor water resistance, heat resistance, abrasion resistance and solvent resistance, and cured film Problems such as transparency, gloss and adhesion are not ideal, and achieve the effect of high tensile shear strength, excellent low temperature resistance and optical properties, and easy transfer

Inactive Publication Date: 2017-11-17
SHENZHEN CENCOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acrylic adhesives have good film-forming properties and light resistance, but due to the presence of ester bonds, their water resistance, heat resistance, abrasion resistance and solvent resistance are poor, so that the transparency, gloss and adhesion of the cured film Sex is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one of the present invention is:

[0028] A UV light-curing adhesive has good optical performance and good bonding strength with a base material.

[0029] The UV photocurable adhesive includes the following components in weight percent: 25-45% polyurethane acrylate, 5-15% polyacrylamide, 5-15% methacrylate, 20-35% acrylate, coupling agent 1-5%, photoinitiator 2-6%, and adhesion promoter 1-10%. The weight average molecular weight of the polyurethane acrylate is 5000-8000, and the weight average molecular weight of the polyacrylamide is 5000-10000. The acrylate is at least one of methyl acrylate, ethyl acrylate, 2-methyl methacrylate and 2-ethyl methacrylate. Described coupling agent is silane coupling agent, is KH550 or KH560, can buy from Alibaba. The photoinitiator is at least one of benzoin, benzoin alkyl ether, acetophenone, anthraquinone, thiol and benzophenone.

[0030] In this embodiment, the adhesion promoter can be prepared from organosilicon mono...

Embodiment 2

[0034] Embodiment 2 of the present invention differs from Embodiment 1 in that:

[0035] The UV photocurable adhesive includes the following components in weight percentage: 35% polyurethane acrylate, 10% polyacrylamide, 10% methacrylate, 30% methyl acrylate, 2% silane coupling agent, benzoin 6% and adhesion promoter 7%. The weight average molecular weight of the polyurethane acrylate is 7000, and the weight average molecular weight of the polyacrylamide is 8000. The adhesion promoter is chlorinated polyolefin CP-343-1\3.

[0036] The UV light-curable adhesive was transferred to the PET sheet. After curing, the measured adhesion level was 0, the tensile shear strength was 7.23 MPa, and the light transmittance of the UV light-curable adhesive layer was 97%.

Embodiment 3

[0038] Embodiment 3 of the present invention differs from Embodiment 1 in that:

[0039] The UV photocurable adhesive includes the following components in weight percentage: 25% polyurethane acrylate, 15% polyacrylamide, 15% methacrylate, 35% methyl acrylate, 1% silane coupling agent, benzoin 4% and adhesion promoter 5%. The weight average molecular weight of the polyurethane acrylate is 8000, and the weight average molecular weight of the polyacrylamide is 5000. The adhesion promoter is chlorinated polyolefin CP-343-1\3.

[0040] The UV light-curable adhesive was transferred to the PET sheet. After curing, the measured adhesion level was 0, the tensile shear strength was 5.88MPa, and the light transmittance of the UV light-curable adhesive layer was 98%.

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PUM

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Abstract

The invention discloses a UV photocuring adhesive. The UV photocuring adhesive is prepared from components in percentage by weight as follows: 25%-45% of urethane acrylate, 5%-15% of polyacrylamide, 5%-15% of methacrylate, 20%-35% of acrylate, 1%-5% of a coupling agent, 2%-6% of a photoinitiator and 1%-10% of an adhesion promoter. The UV photocuring adhesive has better adhesive force with PC, PET or sheetmetal, and is good in tensile shear resistance and good in transparency.

Description

technical field [0001] The invention relates to the technical field of photocurable materials, in particular to a UV photocurable glue. Background technique [0002] UV-curable adhesives belong to the category of green adhesives. Because of their advantages of reducing VOC emissions, curing at room temperature and fast curing speed, they have been widely used in the transfer film industry, especially acrylic adhesives. Acrylic adhesives have good film-forming properties and light resistance, but due to the presence of ester bonds, their water resistance, heat resistance, abrasion resistance and solvent resistance are poor, so that the transparency, gloss and adhesion of the cured film Sex is not ideal. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a UV photocurable adhesive with strong adhesion and high transparency after curing. [0004] In order to solve the problems of the technologies described above, the...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J11/06C09J11/08C09J7/02
CPCC08L2201/10C08L2205/03C09J11/06C09J11/08C09J175/14C09J2400/163C09J2463/00C09J2467/006C09J2469/006C09J2475/00C08L69/00C08L23/28C08K5/544C08K5/5435
Inventor 高建民
Owner SHENZHEN CENCOM TECH