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Ultraviolet curing adhesive with brine resistance, and preparation method thereof

A technology of ultraviolet light and curing glue, which is applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of material mechanical properties decline, low surface contact angle, etc., and achieve high bonding reliability, The effect of large contact angle and short process

Inactive Publication Date: 2021-11-19
长春艾德斯新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, UV-curable adhesives also have their own limitations. Conventional UV-curable adhesives have obvious limitations in the application of salt water resistance.
First of all, due to the strong hydrophilicity of the acrylate molecular chain, the low surface contact angle and the high water absorption rate, as the soaking time prolongs, part of the molecular chain will be destroyed by water, and a large number of water molecules will enter the colloid, so that The mechanical properties of the material will decrease rapidly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Urethane acrylate prepolymer 20g (including aromatic urethane acrylate 10g, aliphatic urethane acrylate 10g), acrylate monomer 30g (including IBOA14g, HEA16g), photoinitiator 1.35g (including 907 1.2g, 8190.15g ), cross-linking agent (TBCHA 2g) and leveling agent 1g were sequentially added to the double planetary dynamic mixing kettle, and the high-speed dispersion was turned on, and the stirring was continued at a speed of 500r / min for 2-3h, and the system was mixed evenly and then transferred to a centrifuge tube , defoaming under the condition of a centrifuge at 5000r / min to obtain a UV-curable adhesive, which can be sealed and packaged.

Embodiment 2

[0019] Urethane acrylate prepolymer 20g (including aromatic urethane acrylate 15g, modified urethane acrylate 5g), acrylate monomer 30g (including HEA12g, PHEA18g), photoinitiator 2.2g (including 907 1.2g, 11731g) , cross-linking agent (HDDA 2g) and leveling agent 1g; sequentially added to the double planetary dynamic mixing kettle, high-speed dispersion was turned on, and stirring was continued at 500r / min for 2-3h. After the system was mixed evenly, it was transferred to a centrifuge tube. Degassing under the condition of 5000r / min, the UV-curable adhesive can be obtained, which can be sealed and packaged.

Embodiment 3

[0021] Urethane acrylate prepolymer 30g (including aromatic urethane acrylate 10g, modified urethane acrylate 20g), acrylate monomer 30g (including IBOA15g, PHEA 15g), photoinitiator 4g (including 184.3g, TPO 1g ) and leveling agent 1g; sequentially added to the double planetary power mixing kettle, open the high-speed dispersion, continue to stir at 500r / min for 2-3h, transfer the system to the centrifuge tube after mixing evenly, under the condition of centrifuge 5000r / min After defoaming, the UV-curable adhesive can be obtained, which can be sealed and packaged.

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PUM

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Abstract

The invention discloses an ultraviolet curing adhesive with brine resistance, and a preparation method thereof, and belongs to the technical field of photocuring materials. In order to solve the problem that a conventional ultraviolet curing adhesive has obvious limitation in application of saline-resistant water, the invention provides the ultraviolet curing adhesive which consists of a polyurethane acrylate prepolymer with a polybutadiene structure, an acrylate monomer, a photoinitiator, a cross-linking agent and a flatting agent. The adhesive has the advantages of low water vapor transmission rate, good chemical resistance and excellent flexibility. Particularly, the adhesive has better salt water resistance, high mechanical property retention rate after being soaked in salt water, large contact angle with water, excellent cured product performance and high bonding reliability, and is suitable for various coatings requiring strict humidity control. In addition, the preparation method of the ultraviolet curing adhesive is simple, short in flow, low in equipment dependence and suitable for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of light-curing materials, and in particular relates to an ultraviolet light-curing adhesive with salt water resistance and a preparation method thereof. Background technique [0002] At present, with the continuous expansion of ultraviolet light technology in the application fields of mobile phones, televisions, computers and other electronic products, ultraviolet light curing adhesives are playing an important role. In the context of the global advocacy of vigorously developing clean energy, the development of light-curing materials with fast curing speed, environmental friendliness, low energy consumption, no solvent volatilization, lower system cost, and better safety performance has become a research support plan for various countries. important direction. However, UV-curable adhesives also have their own limitations. Conventional UV-curable adhesives have obvious limitations in the application of salt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14
CPCC09J175/14
Inventor 孙会娟鲁聪聪李鑫金玉李利虎
Owner 长春艾德斯新材料有限公司
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