UV cured type pressure sensitive adhesive

A pressure-sensitive adhesive and curing technology, which is applied in the direction of adhesives, polyurea/polyurethane adhesives, polymer adhesive additives, etc., can solve the problems of reducing peel strength, improve the degree of surface curing, and solve the problems of peel strength Effect

Active Publication Date: 2017-09-05
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common UV-curable pressure-sensitive adhesives on the market have a fatal defect, that is, due to the presence of oxygen inhibition in the acrylate double bond, a large number of unreacted small molecules will remain on the surface of the pressure-sensitive adhesive film after UV curing. The existence of these small molecules is serious. Reduce the peel strength, which puts forward higher requirements on the performance of UV-curable pressure-sensitive adhesives. It is necessary to overcome the influence of oxygen inhibition on the performance of pressure-sensitive adhesives. The UV-curable pressure-sensitive adhesives of the present invention can well solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Accurately weigh 80g of the monofunctional amine-modified urethane acrylate resin of the synthesis example, 1g of the crosslinking agent HDDA, 20g of the tackifying resin rosin glyceride, and 4g of the photoinitiator 184, and add the above components into the mixer in turn, and mix Evenly, after vacuuming and degassing, let it stand naturally to room temperature, seal and pack, and you get it.

Embodiment 2

[0020] Accurately weigh 90g of the monofunctional amine-modified urethane acrylate resin of the synthesis example, 2g of crosslinking agent BGDA, 30g of tackifying resin rosin pentaerythritol ester, and 8g of photoinitiator TPO, and add the above-mentioned components into the mixer in turn, and mix Evenly, after vacuuming and degassing, let it stand naturally to room temperature, seal and pack, and you get it.

Embodiment 3

[0022] Accurately weigh the monofunctional amine-modified urethane acrylate resin of 70g synthetic examples, 2g crosslinking agent TMPTA, 30g tackifying resin polymerized rosin ester, 4g photoinitiator 184, 2g photoinitiator TPO, the above-mentioned each component Add it to the mixer in turn, mix evenly, vacuumize and defoam, let it stand at room temperature naturally, and seal it to get ready.

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PUM

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Abstract

The invention provides a UV cured type pressure sensitive adhesive. The UV cured type pressure sensitive adhesive comprises the following components in parts by mass: 70-90 parts of monofunctional amine modified polyurethane acrylate resin, 0.1-2 parts of a cross-linking agent, 5-30 parts of tackifying resin and 2-10 parts of a photoinitiator. By the prepared pressure sensitive adhesive, the shortcoming that the surface of a cured film has micromolecules due to oxygen inhibition of the conventional UV type pressure sensitive adhesive is overcome; a tertiary amine structure is introduced in a molecular chain structure of resin, so that the monofunctional amine modified polyurethane acrylate resin is synthesized; by the tertiary amine structure, the problem of the oxygen inhibition in an acrylate double bond reaction process can be solved, the surface curing degree of the pressure sensitive adhesive is improved, and the shortcomings that by the conventional pressure sensitive adhesive, a large number of micromolecules remain on the surface of the cured film, and therefore, the peel strength is reduced are overcome.

Description

technical field [0001] The invention relates to a UV curable pressure-sensitive adhesive, in particular to a UV curable pressure-sensitive adhesive capable of overcoming oxygen inhibition and belongs to the technical field of pressure-sensitive adhesives. Background technique [0002] With the development of society and the improvement of production efficiency, in the field of electronic packaging, due to the short curing time and convenient construction of UV-curable pressure-sensitive adhesives, the demand for UV-curable pressure-sensitive adhesives in production lines is increasing day by day. However, the common UV-curable pressure-sensitive adhesives on the market have a fatal defect, that is, due to the presence of oxygen inhibition in the acrylate double bond, a large number of unreacted small molecules will remain on the surface of the pressure-sensitive adhesive film after UV curing. The existence of these small molecules is serious. Reduce the peel strength, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/08
CPCC09J11/08C09J175/14C08L93/04
Inventor 潘光君王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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