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Photocuring adhesive and its preparation method

A kind of adhesive and light-curing technology, applied in the direction of adhesive, adhesive type, polyurea/polyurethane adhesive, etc., can solve the problems of high power of ultraviolet irradiation equipment, weak bonding effect, short light source life, etc., and achieve enhanced strength , high bonding efficiency and long life of the light source

Active Publication Date: 2012-06-06
WUHAN YILUT TECH CO LTD
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AI Technical Summary

Problems solved by technology

Most of the existing ultraviolet curing adhesives have high requirements for ultraviolet irradiation equipment. The power of ultraviolet irradiation equipment is large, the spectral line is wide, and the life of the light source is short. The light of some frequencies will cause damage to the human body (skin, eyes)
[0003] In addition, the accelerators of UV-curable adhesives are usually phosphate esters, but their polarity is relatively high, and the initial bonding strength is high, but because their water absorption increases with the increase of polar groups, the bonding effect will decrease. Weakens over time, which is unacceptable for communication devices

Method used

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preparation example Construction

[0023] The present invention also provides the preparation method of above-mentioned photocurable adhesive:

[0024] 1. The above-mentioned components are added into a reaction vessel (such as a quartz crucible) according to the above-mentioned weight percentage, and stirred evenly at normal temperature;

[0025] 2. Then heat to 110-185 degrees Celsius to make the mixture into a molten state;

[0026] 3. After the mixture is fully cooled, put it into a degassing machine for degassing, and the obtained suspension is the light-curing adhesive.

[0027] Among the components of the photocurable adhesive in the embodiment of the present invention, polyurethane acrylate provides the basic properties of the cured adhesive, which has suitable adhesiveness, high temperature and high humidity resistance and a small expansion coefficient. Hexylene glycol diacrylate adjusts the tensile strength and viscosity of the cured adhesive. 2(2,4,6-trimethylbenzoyl)-phenylphosphorus oxide is a ph...

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Abstract

The invention discloses a photocuring adhesive, which comprises the following ingredients by weight percentage: 15-60% of polyurethane acrylate, 10-40% of epoxy acrylate, 20-65% of hexanediol diacrylate, 0.1-0.5% of 2(2,4,6-trimethylbenzoyl)-phenylphosphine oxide and 0.5-5% of SiO2 or CaCO2 particles. The invention also discloses a method for preparing the photocuring adhesive. The photocuring adhesive of the present invention has good temperature characteristic, is in favor of enhancing the intensity of mutual bonding of each part, has less requirement on optical power of solidification equipment, and is suitable for narrowband UV light source, the light source life is long. So that the bonding efficiency of the photocuring adhesive with unit volume is higher, the irradiation apparatus cost is reduced and the product rate of the device production can be increased.

Description

technical field [0001] The invention relates to a photocurable adhesive, in particular to a photocurable adhesive and a preparation method thereof. Background technique [0002] UV curing adhesive is a chemical adhesive with polyurethane acrylate and epoxy acrylate as the main raw materials. It is suitable for bonding various glass materials and is used in various full-glue glasses in the communication passive device manufacturing industry. device fabrication. Most of the existing ultraviolet curing adhesives have high requirements for ultraviolet irradiation equipment. The ultraviolet irradiation equipment has high power, wide spectral line, and short light source life. The light of some frequencies will cause damage to the human body (skin, eyes). [0003] In addition, the accelerators of UV-curable adhesives are usually phosphate esters, but their polarity is relatively high, and the initial bonding strength is high, but because their water absorption increases with the ...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J163/10C09J11/04
Inventor 王攀周卫华
Owner WUHAN YILUT TECH CO LTD
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