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A kind of dual curing uv adhesive based on acrylic acid modified hyperbranched waterborne polyurethane and preparation method thereof

A water-based polyurethane, epoxy acrylate technology, applied in the direction of modified epoxy resin adhesives, adhesives, graft polymer adhesives, etc. Stress, curing shrinkage and other problems, to achieve the effect of good curing efficiency, improved high temperature resistance and water resistance, and convenient use.

Active Publication Date: 2020-11-24
福建纳川水务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the curing mechanism of the acrylate system is free radical polymerization, which is characterized by a large curing shrinkage rate, generally above 5%. The high shrinkage rate during the curing process will cause internal stress in the bonding member, reduce the bonding strength, and affect the precision bonding. Dimensional stability of joints, even local cracking and warping

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Put isophorone diisocyanate and dibutyltin dilaurate into a four-neck flask, stir evenly at room temperature, pass through nitrogen protection, gradually raise the temperature to 50°C, and first drop polycarbonate diol to react for 2 hours, Then add hydroxyl-terminated polyether modified silicone oil dropwise, raise the temperature to 75°C for 2 hours, then add dimethylol propionic acid dropwise for 3 hours, finally add hydroxyethyl methacrylate and 4-methoxyphenol dropwise for 3 hours, add Di-PE reacted for 4h to prepare hyperbranched water-based polyurethane, wherein, the components in the hyperbranched water-based polyurethane, by weight percentage, include isophorone diisocyanate 15%, dibutyltin dilaurate 3.5%, polycarbonate Diol 22%, hydroxyl-terminated polyether modified silicone oil 5%, dimethylol propionic acid 3.5%, hydroxyethyl methacrylate 2.5%, Di-PE 0.35%, the balance 4-methoxyphenol .

[0025] (2) According to the mass ratio of hyperbranched water-bas...

Embodiment 2

[0028] (1) Put isophorone diisocyanate and dibutyltin dilaurate into a four-neck flask, stir evenly at room temperature, pass through nitrogen protection, gradually raise the temperature to 50°C, and first drop polycarbonate diol to react for 2 hours, Then add hydroxyl-terminated polyether modified silicone oil dropwise, raise the temperature to 75°C for 2 hours, then add dimethylol propionic acid dropwise for 3 hours, finally add hydroxyethyl methacrylate and 4-methoxyphenol for 3 hours, and finally Add Di-PE and react for 4 hours to prepare hyperbranched water-based polyurethane, wherein the components in the hyperbranched water-based polyurethane include 16% isophorone diisocyanate, 4% dibutyltin dilaurate, polycarbonate Ester diol 30%, hydroxyl-terminated polyether modified silicone oil 15%, dimethylol propionic acid 3.5%, hydroxyethyl methacrylate 2.5%, Di-PE 0.35%, the balance is 4-methoxy phenol.

[0029] (2) According to the mass ratio of hyperbranched water-based pol...

Embodiment 3

[0032] (1) Put isophorone diisocyanate and dibutyltin dilaurate into a four-neck flask, stir evenly at room temperature, pass through nitrogen protection, gradually raise the temperature to 50°C, and first drop polycarbonate diol to react for 2 hours, Then add hydroxyl-terminated polyether modified silicone oil dropwise, raise the temperature to 75°C for 2 hours, then add dimethylol propionic acid dropwise for 3 hours, finally add hydroxyethyl methacrylate and 4-methoxyphenol for 3 hours, and finally Add Di-PE and react for 4 hours to prepare hyperbranched water-based polyurethane, wherein the components in the hyperbranched water-based polyurethane include 15.5% isophorone diisocyanate, 3.9% dibutyltin dilaurate, polycarbonate Ester diol 28%, hydroxyl-terminated polyether modified silicone oil 14%, dimethylol propionic acid 3.5%, hydroxyethyl methacrylate 2.5%, Di-PE 0.35%, the balance is 4-methoxy phenol.

[0033] (2) According to the mass ratio of hyperbranched water-based...

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Abstract

The invention provides a dual-curing UV (Ultraviolet Rays) glue based on acrylic-modified hyperbranched waterborne polyurethane and a preparation method thereof. The specific preparation method comprises the following steps: putting isophorone diisocyanate and dibutyltin dilaurate into a four-opening flask, and stirring at room temperature; firstly, adding polycarbonate diols to react, then, adding hydroxyl terminated polyether modified silicone oil, and carrying out temperature reaction; then, adding dimethylol propionic acid to react, and finally, adding hydroxyethyl methylacrylate and 4-metoxyphenol to react; finally, adding Di-PE to react to prepare hyperbranched waterborne polyurethane; adding hydroxyl-containing acrylic monomer and initiator into hyperbranched waterborne polyurethane to react to obtain acrylic-modified hyperbranched waterborne polyurethane; mixing with epoxy acrylate, and adding acrylic acid, benzenesulfonyl hydrazide, saccharin, photoinitiator and stabilizer; stirring in a planetary mixer, adding isopropyl benzene hydroperoxide initiator, and carrying out vacuum stirring and light-proof packaging to obtain the dual-curing UV glue based on the acrylic-modified hyperbranched waterborne polyurethane.

Description

technical field [0001] The invention belongs to the technical field of UV glue materials, and in particular relates to a dual-cure UV glue based on acrylic acid-modified hyperbranched waterborne polyurethane and a preparation method thereof. Background technique [0002] UV-curable adhesives, also known as UV adhesives, refer to UV radiation of appropriate wavelength and intensity, which triggers the polymerization reaction of each component in the system by the photoprinting machine, and finally forms a cured product with a three-dimensional network crosslinked structure. Compared with traditional heat-curing adhesives and moisture-curing adhesives, UV-curing adhesives have unique advantages, such as no solvent volatilization and low heat generation during curing, stable shape, good light aging resistance and moisture aging resistance, simple use process, Fast curing rate and small volume shrinkage after curing, so it is widely used in the fields of precision instruments su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/08C09J163/10C09J11/06C08F283/00
CPCC08F283/008C09J11/06C09J151/08C09J163/10C08L63/10C08K5/43C08K5/435C08L51/08
Inventor 陈东进
Owner 福建纳川水务有限公司
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