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Double-component flexible epoxy structural adhesive and preparation method thereof

A technology of epoxy structural adhesive and flexibility, which is applied in the direction of epoxy resin glue, adhesive, polymer adhesive additives, etc., can solve the problems of epoxy resin impact resistance, vibration reduction and damping performance changes, etc., to achieve good impact resistance Vibration damping and damping performance, long pot life, low initial viscosity effect

Inactive Publication Date: 2015-03-11
SHISHI GUOGAO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But all of these methods use liquid nitrile rubber as a modified component and mix it into the epoxy resin system, so as to improve the impact resistance and vibration reduction, so that it has a certain damping effect. The proportion of liquid nitrile rubber is small, so it is not enough to fundamentally change the shock resistance, vibration reduction and damping properties of epoxy resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a two-component flexible epoxy structural adhesive, which is prepared by mixing component A and component B at a weight ratio of 100:40.

[0035] Add 25 parts of ATBN1300×16 nitrile rubber and 20 parts of ATBN1300×35 nitrile rubber to 100 parts of 5749 epoxy resin, continue stirring for 15 minutes, and obtain modified nitrile rubber after 1 week at room temperature; add 20 parts of 6002 Epoxy resin, 50 parts of modified nitrile rubber and 10 parts of 5748 reactive diluent are mixed evenly under stirring to obtain component A; 45 parts of 5506 curing agent are added with 1.5 parts of 554 accelerator under stirring, and then stirred for 15 minutes Finally, component B is obtained; mix the raw materials of the above two components A and B evenly to obtain a two-component flexible epoxy structural adhesive.

[0036] The initial viscosity of the two-component flexible epoxy structural adhesive is 8800cps, it can be cured in 5-7 days at room temperature...

Embodiment 2

[0038] A method for preparing a two-component flexible epoxy structural adhesive, which is prepared by mixing component A and component B at a weight ratio of 100:40.

[0039]Add 30 parts of ATBN 1300 × 21 nitrile rubber and 10 parts of ATBN 1300 × 35 nitrile rubber in 80 parts of JX021 epoxy resin, after continuing to stir for 15 minutes, obtain modified nitrile rubber after standing at room temperature for 1 week; Mix one part of 6002 epoxy resin, 40 parts of modified nitrile rubber and 20 parts of 5748 reactive diluent under stirring to obtain component A; add 2 parts of 554 accelerator to 30 parts of 5506 curing agent under stirring, and then stir After 15 minutes, component B is obtained; mix the raw materials of the above two components A and B evenly to obtain a two-component flexible epoxy structural adhesive.

[0040] The initial viscosity of the two-component flexible epoxy structural adhesive is 8200cps, it can be cured in 5-7 days at room temperature, and the pot l...

Embodiment 3

[0042] A method for preparing a two-component flexible epoxy structural adhesive, which is prepared by mixing component A and component B at a weight ratio of 100:25.

[0043] Add 30 parts of ATBN 1300 × 16 nitrile rubber and 10 parts of ATBN 1300 × 35 nitrile rubber in 80 parts of 6350 epoxy resins, after continuing to stir for 15 minutes, the modified nitrile rubber can be obtained after standing at room temperature for 1 week; Mix 10 parts of 6002 epoxy resin, 10 parts of 6002 epoxy resin, 65 parts of modified nitrile rubber and 10 parts of 5748 reactive diluent under stirring to obtain component A; add 60 parts of 5506 curing agent to 2.5 parts under stirring Part 554 Accelerator, and then stir for 15 minutes to obtain Part B; mix the raw materials of the above two parts A and B evenly to obtain a two-component flexible epoxy structural adhesive.

[0044] The initial viscosity of the two-component flexible epoxy structural adhesive is 9300cps, it can be cured in 5-7 days a...

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Abstract

The invention provides a double-component flexible epoxy structural adhesive and a preparation method thereof. The double-component flexible epoxy structural adhesive is characterized by being prepared through the following steps: firstly reacting double-epoxy group epoxy resin and amino-terminated nitrile rubber, thereby obtaining modified nitrile rubber, and mixing a component A and a component B according to the weight ratio of 100:(20-80), wherein the component A comprises the following components in parts by weight: 30-60 parts of epoxy resin, 30-60 pats of modified nitrile rubber and 10-50 parts of a reactive diluent; the component B comprises the following components in parts by weight: 0-40 parts of amino-terminated liquid nitrile rubber, 30-60 parts of a curing agent and 0-3 parts of an accelerant. The double-component flexible epoxy structural adhesive has the advantages of good convenience in construction, long working life, smooth and slow heat release and possibility of being solidified at room temperature, a prepared epoxy material is high in antishock property, good in damping property and high in bonding strength and can be widely used in fields such as the electronic industry, the machine industry, the ship industry, the automobile industry and the construction industry.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a two-component flexible epoxy structural adhesive modified by liquid nitrile rubber and a preparation method thereof. Background technique [0002] Since the 1990s, the United States, Japan, Europe and other developed countries have done a lot of work in the research and application of vibration-damping steel plates, and have been widely used in aerospace, automobile, machinery and other industries, and have received good results. In the mid-1990s, my country also carried out research on vibration-damping steel plates, but the development and application of vibration-damping steel plate products in my country has been relatively slow, with few product varieties and few application fields. [0003] The so-called vibration-damping steel plate is a vibration-damping steel plate made of a composite of steel plate and polymer material. It is a new type of materi...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/08
Inventor 陈海波
Owner SHISHI GUOGAO ELECTRONICS TECH
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