A kind of epoxy structural adhesive curing agent and its preparation method and application

A technology of epoxy structural adhesive and curing agent, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems that the strength, water resistance and other properties cannot be effectively guaranteed, and achieve excellent tensile strength and amine value Low, not easy to change color effect

Active Publication Date: 2021-06-01
WUHAN STYLE HIGH TECH BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, epoxy resin structural adhesives account for more and more low-end adhesives in the market. However, the strength and water resistance of low-end adhesives cannot be effectively guaranteed.

Method used

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  • A kind of epoxy structural adhesive curing agent and its preparation method and application
  • A kind of epoxy structural adhesive curing agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Epoxy structural adhesive curing agent

[0039] The above-mentioned epoxy structural adhesive curing agent is prepared from the following raw materials in parts by weight:

[0040] 20 parts of E51 type epoxy resin, 10 parts of 692 epoxy resin reactive diluent, 20 parts of isophorone diamine, 20 parts of diethylene triamine, 30 parts of benzyl alcohol.

[0041] 2. Preparation method

[0042] The preparation method of above-mentioned epoxy structural adhesive curing agent, this preparation method comprises the steps:

[0043] (1) E51 type epoxy resin and 692 epoxy resin reactive diluent are mixed uniformly to obtain a mixture, and the mixture is equally divided into 3 parts;

[0044] (2) Isophoronediamine and diethylenetriamine are mixed and poured into the reactor;

[0045] (3) Benzyl alcohol is placed in the reactor and starts to stir;

[0046] (4) 3 points of the mixture in step (1) are placed in the reaction kettle at intervals for reaction, wherein the interva...

Embodiment 2

[0050] 1. Epoxy structural adhesive curing agent

[0051] The above-mentioned epoxy structural adhesive curing agent is prepared from the following raw materials in parts by weight:

[0052] 10 parts of E51 type epoxy resin, 5 parts of 692 epoxy resin reactive diluent, 20 parts of isophorone diamine, 10 parts of diethylene triamine, 40 parts of benzyl alcohol.

[0053] 2. Preparation method

[0054] The preparation method of above-mentioned epoxy structural adhesive curing agent, this preparation method comprises the steps:

[0055] (1) E51 type epoxy resin and 692 epoxy resin reactive diluent are mixed uniformly to obtain a mixture, and the mixture is equally divided into 3 parts;

[0056] (2) Isophoronediamine and diethylenetriamine are mixed and poured into the reactor;

[0057] (3) Benzyl alcohol is placed in the reactor and starts to stir;

[0058] (4) 3 points of the mixture in step (1) are placed in the reaction kettle at intervals for reaction, wherein the interval...

Embodiment 3

[0062] 1. Epoxy structural adhesive curing agent

[0063] The above-mentioned epoxy structural adhesive curing agent is prepared from the following raw materials in parts by weight:

[0064] 19 parts of E51 type epoxy resin, 10 parts of 692 epoxy resin reactive diluent, 21 parts of isophorone diamine, 15 parts of diethylene triamine, 35 parts of benzyl alcohol.

[0065] 2. Preparation method

[0066] The preparation method of above-mentioned epoxy structural adhesive curing agent, this preparation method comprises the steps:

[0067] (1) E51 type epoxy resin and 692 epoxy resin reactive diluent are mixed uniformly to obtain a mixture, and the mixture is equally divided into 3 parts;

[0068] (2) Isophoronediamine and diethylenetriamine are mixed and poured into the reactor;

[0069] (3) Benzyl alcohol is placed in the reactor and starts to stir;

[0070] (4) 3 points of the mixture in step (1) are placed in the reaction kettle at intervals for reaction, wherein the interva...

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Abstract

The invention relates to a curing agent for epoxy structural adhesive and a preparation method and application thereof. The curing agent is prepared from the following raw materials in parts by weight: 10-20 parts of E51 epoxy resin, 5-20 parts of 692 epoxy resin reactive diluent 10 parts, 20-30 parts of isophorone diamine, 10-20 parts of diethylene triamine, and 30-40 parts of benzyl alcohol; the curing agent has the advantages of low viscosity, low amine value, excellent water resistance and not easy to change color.

Description

technical field [0001] The invention relates to the field of epoxy structural adhesives, in particular to a curing agent for epoxy structural adhesives and its preparation method and application. Background technique [0002] Epoxy structural adhesive is a solvent-free, liquid epoxy resin adhesive that can be cured at room temperature or heated. After curing, the adhesive layer is medium to hard, so it can withstand strong impact and vibration. The adhesive layer has good mechanical properties, good electrical insulation, and can withstand temperature changes and flexural tearing stress. Non-corrosive, good adhesion to metals, ceramics, vulcanized rubber, glass fiber products, and carbon fiber products, etc.; temperature resistance and oil resistance. [0003] Epoxy structural adhesives include a main agent and a curing agent. Among them, the curing agent includes aliphatic amines, ring amines and aromatic amines; however, the existing curing agents have the disadvantages o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J11/04C08G59/50
CPCC08G59/50C08K2003/265C09J11/04C09J163/00C08K3/26
Inventor 辛自强孙丹九
Owner WUHAN STYLE HIGH TECH BUILDING MATERIALS
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