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UV two-component dual-cure structural adhesive

A dual-curing, structural adhesive technology, used in adhesives, organic chemistry, adhesive types, etc., can solve the problems of UV glue shadows that cannot be cured, uncontrollable curing speed, etc., to achieve good optical transparency and refractive index, good adhesion. Bond strength, good structural strength and flexibility

Active Publication Date: 2021-10-15
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 two-component dual-cure structural adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Synthesis of bisphenol fluorene polyether polythiol with bisphenol fluorene structure

[0035] Add 9,9 bis[6-(2-hydroxyethoxy)phenyl]fluorene, ethylene oxide, basic catalyst and solvent A into the reaction kettle, and raise the reaction temperature to 50°C. After 1 hour of reaction Bisphenol fluorene polyether polythiol with bisphenol fluorene structure can be obtained, wherein the quality of 9,9 bis[6-(2-hydroxyethoxy)phenyl]fluorene, ethylene oxide, basic catalyst and solvent A The ratio is 1:0.1:0.01:5; the chemical reaction equation is shown in the figure below:

[0036]

[0037] Among them, m+n=4;

[0038] The basic catalyst is triethylamine, and the solvent A is formamide.

[0039] (2) Bisphenol fluorene polyether polyol with acrylic structure

[0040] Dissolve bisphenol fluorene 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 ac...

Embodiment 2

[0050] (1) Synthesis of bisphenol fluorene polyether polythiol with bisphenol fluorene structure

[0051] Add 9,9 bis[6-(2-hydroxyethoxy)phenyl]fluorene, 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 Bisphenol fluorene polyether polythiol with bisphenol fluorene structure can be obtained, wherein the quality of 9,9 bis[6-(2-hydroxyethoxy)phenyl]fluorene, ethylene oxide, basic catalyst and solvent A The ratio is 1:10:0.5:50; the chemical reaction equation is shown in the figure below:

[0052]

[0053] Among them, m+n=20;

[0054] The basic catalyst is sodium hydroxide, and the solvent A is dimethylsulfoxide.

[0055] (2) Bisphenol fluorene polyether polyol with acrylic structure

[0056] Dissolve bisphenol fluorene 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 ac...

Embodiment 3

[0066] (1) Synthesis of bisphenol fluorene polyether polythiol with bisphenol fluorene structure

[0067] Add 9,9 bis[6-(2-hydroxyethoxy)phenyl]fluorene, 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 Bisphenol fluorene polyether polythiol with bisphenol fluorene structure can be obtained, wherein the quality of 9,9 bis[6-(2-hydroxyethoxy)phenyl]fluorene, ethylene oxide, basic catalyst and solvent A The ratio is 1:6:0.4:20; the chemical reaction equation is shown in the figure below:

[0068]

[0069] Among them, m+n=15;

[0070] Wherein the basic catalyst is potassium carbonate, and the solvent A is dioxane.

[0071] (2) Bisphenol fluorene polyether polyol with acrylic structure

[0072] Dissolve bisphenol fluorene 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 ob...

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Abstract

The invention relates to a UV two-component dual-curing structural adhesive, which is characterized in that it contains A component and B component, wherein A component is the main agent part, and B component is the curing agent part. In the two-component rubber hose, A The volume ratio of component and B component is 1:1; the ingredients contained in the A component are: acrylic resin, bisphenol fluorene polyether polyol with acrylic structure, epoxy resin and polymerization inhibitor; the B The components contained in the component are: bisphenol fluorene polyether polythiol, photoinitiator and peroxide free radical initiator. It has good strength and flexibility. At the same time, because it contains sulfur, it has a good refractive index and achieves good transparent optical effects. Its pre-fixing time can be controlled by UV, and it can solve the problem of curing the shadow part of UV glue. Widely used in structural bonding and gap filling fields.

Description

technical field [0001] The invention belongs to the field of UV two-component double-cure transparent adhesive, in particular to a bisphenol fluorene 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 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 adhe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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