Amido amine epoxy curing agent and preparation method and application thereof

A technology of epoxy curing agent and amidoamine, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of insufficient bonding strength, long curing time, inconvenient operation, etc., and achieve adhesion Strong, low process energy consumption, strong adhesion effect

Pending Publication Date: 2022-02-18
潼灏(上海)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems that the curing agent currently used on wet surfaces has a long curing time on wet surfaces, high viscosity, strong odor, inconvenient operation, and insufficient bonding strength, the purpose of the present invention is to provide an amidoamine epoxy curing agent. It has moderate curing reaction time, low viscosity, easy handling and excellent adhesion on wet surfaces, especially suitable for civil engineering fields in humid environments

Method used

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  • Amido amine epoxy curing agent and preparation method and application thereof
  • Amido amine epoxy curing agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of amidoamine epoxy curing agent comprises the steps:

[0028] S1. Weigh 46 parts of fatty acid (oleic acid and linoleic acid with a weight ratio of 1:1), 45 parts of fatty amine (triethylenetetramine), 15 parts of epoxy modifier (C12-C14 alkyl glycidyl ether ), 0.5 parts of epoxy accelerator (2,4,6 three-(dimethylaminomethyl)phenol);

[0029] S2. Mix the fatty acid and the epoxy modifier evenly, heat up to 140° C. and then stir for 2 hours;

[0030] S3, add aliphatic amine again, and heat up to 180° C., then stir for 2 hours;

[0031] S4. Cool down the temperature of the mixture in step S3 until the temperature of the mixture is ≤70° C., add an epoxy accelerator, stir evenly, and then discharge to obtain an amidoamine epoxy curing agent.

Embodiment 2

[0033] The preparation method of amidoamine epoxy curing agent comprises the steps:

[0034] S1, take by weighing 43 parts of fatty acids (C16-C20 higher fatty acid), 42 parts of fatty amines (diethylenetriamine and tetraethylenepentamine with a weight ratio of 1:1), 12 parts of epoxy modifier (trimethylol propane triglycidyl ether), 1 part epoxy accelerator (2,4,6 tris-(dimethylaminomethyl)phenol);

[0035] S2. Mix the fatty acid and the epoxy modifier evenly, heat up to 130° C. and then stir for 1 hour;

[0036] S3, add aliphatic amine again, and heat up to 170°C, then stir and react for 2 hours;

[0037] S4. Cool down the temperature of the mixture in step S3 until the temperature of the mixture is ≤70° C., add an epoxy accelerator, stir evenly, and then discharge to obtain an amidoamine epoxy curing agent.

Embodiment 3

[0039] The preparation method of amidoamine epoxy curing agent comprises the steps:

[0040] S1, take by weighing 33 parts of fatty acids (weight ratio is the C16-C20 higher fatty acid of 1:1:1, rosin acid, tall oil), 32 parts of aliphatic amines (triethylenetetramine), 10 parts of epoxy modifiers ( C12-C14 alkyl glycidyl ether), 1 part epoxy accelerator (1-aminopiperazine);

[0041] S2. Mix the fatty acid and the epoxy modifier evenly, heat up to 150° C. and then stir for 1 hour;

[0042] S3, add aliphatic amine again, and heat up to 190° C., then stir and react for 1 hour;

[0043] S4. Cool down the temperature of the mixture in step S3 until the temperature of the mixture is ≤70° C., add an epoxy accelerator, stir evenly, and then discharge to obtain an amidoamine epoxy curing agent.

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Abstract

The invention discloses an amido amine epoxy curing agent which comprises the following components in parts by weight: 30-55 parts of fatty acid, 30-60 parts of fatty amine, 5-20 parts of an epoxy modifier and 0.2-4 parts of an accelerant, the fatty acid is one or a mixture of more of C16-C20 higher fatty acid, oleic acid, linoleic acid, abietic acid and tall oil; the fatty amine is one or a mixture of more of diethylenetriamine, triethylene tetramine, tetraethylenepentamine and pentaethylenehexamine; the epoxy modifier is one or a mixture of more of C12-C14 alkyl glycidyl ether, 1, 4-butanediol diglycidyl ether, o-cresol glycidyl ether and trimethylolpropane triglycidyl ether. The amido amine epoxy curing agent is moderate in curing reaction time, low in viscosity and convenient to operate, has excellent adhesive force on a humid surface, and is particularly suitable for the field of civil engineering in a humid environment.

Description

technical field [0001] The invention relates to the technical field of epoxy curing agents, in particular to an amidoamine epoxy curing agent and its preparation method and application. Background technique [0002] Epoxy resin materials are an important class of thermosetting materials, which have the advantages of high bonding strength, low shrinkage, good stability, high mechanical strength and good processability, and can be widely used as coatings, adhesives, potting materials, etc. Machinery, electronics, civil engineering and construction and other fields. Different from the field of machinery and electronics, in the field of civil engineering and construction, the working conditions will be more complicated. In addition to the ordinary dry surface, many working conditions are on the wet surface, so it is necessary to use it under special conditions. Epoxy material. [0003] Epoxy resin materials are generally composed of resin and curing agent. The resin is general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/44C09J163/00
CPCC08G59/44C09J163/00
Inventor 童天中傅涛洪显忠李鹏飞杨飞龙
Owner 潼灏(上海)材料科技有限公司
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