Photo-setting adhesive

Abstract

The invention discloses a photo-curing adhesive, in particular relates to an adhesive of ultraviolet rays or visible light. The adhesive comprises components of the following weight ratios: 10 percent to 75 percent of matrix resin, 5 percent to 50 percent of assisted resin and 10 percent to 70 percent of acrylate monomer, wherein, the matrix resin is a mixture of one or the mixture of polyether-based polyurethane and polybutadiene acrylate and the assisted resin is one or the mixture of polyurethane acrylate or epoxy acrylate. The photo-curing adhesive provided by the invention has better adhesive performance than a common adhesive, especially has very high adhesive strength to glass, crystal and metal, meanwhile, the photo-curing adhesive has excellent resistance performance to high temperature, high humidity and water boiling, thereby having wide application prospect.

Description

technical field [0001] The invention relates to a photocurable adhesive, in particular to an ultraviolet or visible light curable adhesive. Background technique [0002] The light-curing adhesive in the prior art is easy to use, solidifies quickly, and can bond transparent materials (at least one side of the adherend is light-transmitting), and is widely used in the bonding of glass and crystal, and the bonding of glass and metal. , such as glass and metal furniture products, but these glass and glass and metal products often encounter high-temperature and high-humidity storage and transportation environments. As a result, the bonding failure of the light-curing adhesive is found. When it is transported to the destination, it is found that the bonding is damaged. It usually shows that the apparent interface of the bonding is damaged, the adhesive film falls off, and the interface of the bonding glass is damaged, and the glue remains on the metal. This is The bonding failure...

AI Technical Summary

Problems solved by technology

These accelerators are usually phosphate esters with high polarity, which shows that the initial bonding strength is particularly high, but excessive polar groups enhance the water absorption rate, resulting in a large attenuation of the long-term bonding effect, which cannot guarantee long-lasting high viscosity. Contact strength

[0007] High temperature has a great impact on light-curing adhesives. Elevating the temperature will accelerate the oxidative cracking and hydrolysis of the compound, which will also lead to a decrease in the actual bonding result.

[0008] The simultaneous action of high temperature and high humidity is a harsh test for bonding, and many light-curing adhesives decay relatively quickly under high temperature and high humidity.

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