Low-bubble photo-curing adhesion agent

Abstract

The invention discloses a low-bubble photo-curing adhesion agent. The low-bubble photo-curing adhesion agent comprises, by weight, 10-50 parts of (methyl) acrylic ester prepolymer with polyolefin, 30-90 parts of (methyl) acrylic ester diluent monomer, 0.1-5 parts of silane coupling agents, 1-10 parts of photoinitiators, and 0-7parts of adhesion promoters. The addition of the adhesion promoters is determined according to requirements of a user; if the low-bubble photo-curing adhesion agent is used for adhesive bonding between glass or between glass and metal with a high requirement for adhesive strength, an appropriate number of the adhesion promoters can be added; if the low-bubble photo-curing adhesion agent is used for adhesive bonding between organic glass or between the glass and the metal with a low requirement for adhesive strength, the adhesion promoters may be not added. Compared with the prior art, few bubbles are generated when the low-bubble photo-curing adhesion agent is blended, and the generated bubbles can disappear by themselves in a short time; the bubbles are not easily generated at the time of adhesive bonding; even if a few bubbles are generated, the bubbles can disappear by themselves in a short time.

Description

technical field [0001] The invention relates to an adhesive, in particular to a low-foam light-curing adhesive suitable for large-area bonding. Background technique [0002] Light-curing adhesive is widely used in the bonding of transparent glass and plexiglass because it is transparent after curing and no traces can be seen. Generally, light-curing adhesives are prone to bubbles during the bonding process, especially for grating shielding glass, which requires a metal mesh with a small aperture between two pieces of glass. With ordinary light-curing adhesive bonding, it is easier to squeeze out the bubbles when the area is small, but it is difficult to drive out when the area is large, and it is impossible to drive out the bubbles when the area is large enough to a certain extent. This just brings very big trouble to use, even can't use. Of course, the problem of air bubbles can also be solved by vacuuming, but it needs to increase equipment and add a process during opera...

AI Technical Summary

Problems solved by technology

Bonding with ordinary light-curing adhesive, it is easier to squeeze out the bubbles when the area is small, but it is difficult to get out when the area is large, and it is impossible to drive out the bubbles when the area is large enough to a certain extent

This brings a lot of trouble to the use, and even can not be used

Of course, the problem of air bubbles can also be solved by vacuuming, but it needs to increase equipment and add a process during operation, so it not only increases the equipment cost but also reduces the production efficiency. This is what most users do not want to accept. The glue manufacturer will be asked to solve the problem from the glue, which presents a difficult problem for the glue manufacturer

It is generally thought of using defoamers to solve this problem, but most defoamers are not compatible with light-curing adhesives. Adding too little will not work, and too much will affect the transparency and other properties of the glue. The remaining large bubbles are also difficult to completely eliminate

That is to say, the defoamer is not a panacea. Although it generally has a certain effect on defoaming and foam suppression, it cannot fundamentally solve the problem of bubbles.

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