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UV double-component double-curing structural adhesive

A two-component adhesive and dual-curing technology, applied in adhesives, organic chemistry, epoxy resin adhesives, etc., can solve the problems of UV glue shadows that cannot be cured, curing speed is uncontrollable, etc., and achieve good optical transparency and refractive index. Good bonding strength, the effect of reducing the holding time

Active Publication Date: 2020-06-26
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] UV two-component dual-curing structural adhesive, which has light curing function, solves the problem that the shadow part of traditional UV glue cannot be cured, and also solves the problem that the curing speed is relatively uncontrollable. It has good structural strength and flexibility, and can Achieves good bond strength with very good optical clarity and refractive index for markless bonding, caulking and restoration

Method used

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  • UV double-component double-curing structural adhesive
  • UV double-component double-curing structural adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Synthesis of polyether polyols with bisphenol fennel structure

[0040] Add 9,9 bis[6-(2-hydroxyethoxy)phenyl]onium, ethylene oxide, basic catalyst and solvent A into the reaction kettle, raise the reaction temperature to 50°C, and react for 1 hour The polyether polyol with bisphenol fennel structure can be obtained, wherein the mass ratio of 9,9 bis[6-(2-hydroxyethoxy)phenyl] fennel, ethylene oxide, basic catalyst and solvent A is 1:0.1 : 0.01: 5; the chemical reaction equation is as follows:

[0041]

[0042] Among them, m+n=4;

[0043] The basic catalyst is triethylamine, and the solvent A is formamide.

[0044] (2) Bisphenol polyether polyol with acrylic structure

[0045] Dissolve bisphenol polyether polyol in solvent A, then add acrylate structure monomer with isocyano group, raise the reaction temperature to 40°C, react for 1 hour, and obtain acrylic acid with acrylic acid after distillation and purification under reduced pressure Structure of bispheno...

Embodiment 2

[0055] (1) Synthesis of polyether polyols with bisphenol fennel structure

[0056] Add 9,9 bis[6-(2-hydroxyethoxy)phenyl]onium, ethylene oxide, basic catalyst and solvent A into the reaction kettle, the reaction temperature is raised to 100°C, and after 5 hours of reaction Can obtain the polyether polyol of bisphenol fennel structure, wherein the mass ratio of 9,9 bis[6-(2-hydroxyethoxy)phenyl] fennel, ethylene oxide, basic catalyst and solvent A is 1: 10:0.5:50; the chemical reaction equation is as follows:

[0057]

[0058] Among them, m+n=20;

[0059] The basic catalyst is sodium hydroxide, and the solvent A is dimethylsulfoxide.

[0060] (2) Bisphenol polyether polyol with acrylic structure

[0061] Dissolve bisphenol polyether polyol in solvent A, then add acrylate structure monomer with isocyano group, raise the reaction temperature to 80°C, react for 3 hours, and obtain acrylic acid with acrylic acid after distillation and purification under reduced pressure stru...

Embodiment 3

[0071] (1) Synthesis of polyether polyols with bisphenol fennel structure

[0072] Add 9,9 bis[6-(2-hydroxyethoxy)phenyl]onium, ethylene oxide, and basic catalyst coating solvent A into the reaction kettle, and the reaction temperature is raised to 80°C. After 4 hours of reaction, Can obtain the polyether polyol of bisphenol fennel structure, wherein the mass ratio of 9,9 bis[6-(2-hydroxyethoxy)phenyl] fennel, ethylene oxide, basic catalyst and solvent A is 1: 6:0.4:20; the chemical reaction equation is as follows:

[0073]

[0074] Among them, m+n=15;

[0075] Wherein the basic catalyst is potassium carbonate, and the solvent A is dioxane.

[0076] (2) Bisphenol polyether polyol with acrylic structure

[0077] Dissolve bisphenol polyether polyol in solvent A, then add acrylate structure monomer with isocyano group, raise the reaction temperature to 60°C, react for 2 hours, and obtain acrylic acid with acrylic acid after distillation and purification under reduced pressu...

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Abstract

The invention relates to a UV double-component double-curing structural adhesive. The structural adhesive is characterized by comprising a component A and a component B, wherein the component A is a main agent part, the component B is a curing agent part, and the volume ratio of the component A to the component B in a double-component rubber tube is 1:1; the component A comprises acrylic resin, bisphenol polyether polyol with an acrylic acid structure, epoxy resin and a polymerization inhibitor; and the component B comprises bisphenol polyether polymercaptan, a photoinitiator and a peroxide radical initiator. The structural adhesive has good strength and flexibility, has a good refractive index due to the sulfur element, realizes a good transparent optical effect, can control the pre-fixing time by using UV, can solve the problem of curing of a shadow part of the UV glue, and can be widely applied to the fields of structural bonding and gap filling.

Description

technical field [0001] The invention belongs to the field of UV two-component double-cure transparent adhesive, in particular to a bisphenol polyether polyol and a UV two-component double-cure structural adhesive prepared therefrom. Background technique [0002] In the field of structural bonding and gap filling, two-component structural adhesives have good bonding strength and environmental reliability, so they are widely used. [0003] At present, the two-component structural adhesives in the industry mainly include epoxy resin type, acrylic type, polyurethane type and silicone type; among them, silicone type has weak bonding strength and is mainly used for heat conduction potting, protection in electronic power, etc.; Polyurethane type two-component structural adhesives and epoxy resin two-component structural adhesives also have good bonding strength and are widely used in the fields of automobiles and aerospace; among them, polyurethane two-component structural adhesive...

Claims

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Application Information

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IPC IPC(8): C09J4/06C09J4/02C09J171/00C09J171/02C09J163/00C08G65/333C07C41/18C07C43/21C07C269/02C07C271/16
CPCC07C41/18C07C269/02C08G65/33351C08L2205/02C08L2205/03C09J4/06C09J171/00C07C2603/18C08L71/02C08L63/00C07C43/21C07C271/16
Inventor 刘锋陈燕舞陈海明林雯雯
Owner SHUNDE POLYTECHNIC
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