A kind of underwater epoxy resin curing agent and preparation method thereof

A technology of epoxy resin curing and amine curing agent, which is applied in the field of polymer material synthesis and preparation, can solve the problems of poor curing performance of curing agent in water and poor environmental protection, and achieve improved weather resistance, environmental protection, and weather resistance Good, simple preparation process

Active Publication Date: 2022-03-25
CNBM ZHONGYAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The preparation process has easy-to-obtain raw materials, simple method, and easy operation, and effectively solves the problems of ordinary epoxy resin curing agents that are difficult to cure in water, poor curing performance of water curing agents, and poor environmental protection. application is very important

Method used

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  • A kind of underwater epoxy resin curing agent and preparation method thereof
  • A kind of underwater epoxy resin curing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Diethylene triamine, neopentyl glycol diglycidyl ether, highly brominated DGEBA with a relative molecular weight of 1400, tris(dimethylaminomethyl)phenol, dibutyl phthalate, methyl hydrogen silicone oil according to The mass ratio is 60:15:15:5:3:2 for weighing. First, mix and stir neopentyl glycol diglycidyl ether and highly brominated DGEBA with a relative molecular weight of 1400, then add diethylenetriamine curing agent, and stir for 3 hours at 50°C; when the temperature is cooled to room temperature, add The weighed tris(dimethylaminomethyl)phenol, dibutyl phthalate and methyl hydrogen-containing silicone oil can be continuously mixed and stirred.

Embodiment 2

[0027] Triethylenetetramine, hexanediol diglycidyl ether, hyperbrominated DGEBA with a relative molecular weight of 1400, hyperbrominated DGEBA with a relative molecular weight of 2000, tris(dimethylaminomethyl)phenol, dioctyl phthalate and methyl hydrogen-containing silicone oil are weighed according to the mass ratio of 60:20:5:5:6:2:2. First, mix and stir hexanediol diglycidyl ether and highly brominated DGEBA with a relative molecular weight of 1400, then add triethylenetetramine curing agent, stir and react at 65°C for 2 hours; wait for the temperature to cool to room temperature, add and weigh Good tris(dimethylaminomethyl)phenol, dioctyl phthalate and methyl hydrogen-containing silicone oil continue to mix and stir.

Embodiment 3

[0029] Triethylenetetramine, hexanediol diglycidyl ether, high brominated DGEBA with a relative molecular weight of 1600, dimethylaminomethylphenol, dioctyl phthalate and methyl hydrogen-containing silicone oil are in a mass ratio of 70: 30:10:5:2:3 Weighing. First, mix and stir hexanediol diglycidyl ether and highly brominated DGEBA with a relative molecular weight of 1600, then add triethylenetetramine curing agent, stir and react at 45°C for 4 hours; wait for the temperature to cool to room temperature, add and weigh Good dimethylaminomethylphenol, dioctyl phthalate and methyl hydrogen silicone oil can be mixed and stirred.

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Abstract

The invention relates to an underwater epoxy resin curing agent, which consists of the following components: amine curing agent, difunctional glycidyl ether, high brominated DGEBA, activity accelerator, plasticizer and hydrophobic agent. Utilize the highly active hydrogen atoms in the amine curing agent to undergo ring-opening reactions with the epoxy groups in the difunctional glycidyl ether and highly brominated DGEBA to form a new curing agent structure; at the same time, provide a system based on the accelerator High reactivity, plasticizer improves the viscosity of the system and the mechanical properties of the cured product, and the hydrophobic agent improves the underwater adhesiveness of the system, which effectively solves the problems of long curing time in water, poor adhesive performance and poor mechanical properties of the current curing agent. And improve the weather resistance and environmental protection of the curing agent.

Description

technical field [0001] The invention relates to the field of polymer material synthesis and preparation, and furthermore, relates to an underwater epoxy resin curing agent and a preparation method thereof. Background technique [0002] Epoxy resin materials are generally composed of resin and curing agent. Because of their excellent bonding properties and outstanding mechanical properties, they have been widely used in structural repair and reinforcement projects. At present, most of the research on epoxy resin focuses on the modification of the curing agent, but most of the curing agent is still used in a dry environment, which is difficult to meet the engineering application requirements of the underwater environment; and the concrete structure that has been underwater for a long time is easy to It is damaged by water medium erosion and other factors, and the working environment is harsh. After the disease occurs, it needs to be repaired in time, otherwise it will seriousl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/50C08G59/22C08G59/30
CPCC08G59/5006C08G59/5033C08G59/226C08G59/308
Inventor 裴须强朱玉雪宋作宝尹润平李婷力乙鹏张帅隗天骄
Owner CNBM ZHONGYAN TECH
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