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Two-component toughened anti-shock epoxy structural adhesive and preparation method thereof

An epoxy structural adhesive, two-component technology, applied in the direction of epoxy resin glue, adhesive, polymer adhesive additives, etc., can solve the problems of liquid polysulfide rubber odor, trouble in use and promotion, environmental problems, etc. Achieve the effects of low product odor, long pot life and easy construction

Inactive Publication Date: 2015-04-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the weak point of all these methods is that when liquid polysulfide rubber is in use, uncured liquid polysulfide rubber has very serious odor, there is serious environmental problem, has brought great harm to the use and popularization of product Trouble

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: A preparation method of a two-component toughened and impact-resistant epoxy structural adhesive.

[0038] Add 30 parts of JLY-124 polysulfide rubber and 10 parts of JLY-121 polysulfide rubber to 80 parts of JX021 epoxy resin, after continuing to stir for 15 minutes, the modified polysulfide rubber can be obtained after standing at room temperature for 48 hours; 20 parts of 6002 Epoxy resin, 60 parts of modified polysulfide rubber and 10 parts of 5748 reactive diluent are mixed evenly under stirring to obtain component A; 50 parts of 5506 curing agent are added with 2 parts of accelerator under stirring, and then stirred for 15 minutes to obtain Component B: Mix the raw materials of components A and B evenly to obtain a two-component toughened impact-resistant epoxy structural adhesive.

[0039] Mix component A and component B at a weight ratio of 100:25 to obtain a two-component toughened impact-resistant epoxy structural adhesive. The initial viscosity i...

Embodiment 2

[0040] Embodiment 2: A preparation method of a two-component toughened and impact-resistant epoxy structural adhesive.

[0041] Add 40 parts of JLY-124 polysulfide rubber to 70 parts of JX021 epoxy resin, continue stirring for 15 minutes, and then obtain modified polysulfide rubber after standing at room temperature for 48 hours; mix 15 parts of 618 epoxy resin, 60 modified polysulfide Mix the rubber evenly under stirring to obtain component A; add 60 parts of 5506 curing agent to 3 parts of accelerator under stirring, and then stir for 15 minutes to obtain component B; mix the raw materials of components A and B evenly to obtain Two-component toughened impact-resistant epoxy structural adhesive.

[0042]Mix component A and component B at a weight ratio of 100:25 to obtain a two-component toughened impact-resistant epoxy structural adhesive. The initial viscosity is 9000 cps, and it can be cured within 3 to 7 days at room temperature, and the pot life exceeds 2 Hour. The sam...

Embodiment 3

[0043] Embodiment 3: A preparation method of a two-component toughened and impact-resistant epoxy structural adhesive.

[0044] Add 50 parts of JLY-124 polysulfide rubber and 10 parts of JLY-121 polysulfide rubber to 100 parts of 5749 epoxy resin, after continuing stirring for 15 minutes, the modified polysulfide rubber can be obtained after standing at room temperature for 48 hours; 20 parts of 618 Epoxy resin, 60 modified polysulfide rubber and 10 parts of 5748 reactive diluent are mixed evenly under stirring to obtain component A; 50 parts of 5506 curing agent are stirred with 2.5 parts of accelerator, and then stirred for 15 minutes to obtain group B Components; Mix the raw materials of components A and B evenly to obtain a two-component toughened impact-resistant epoxy structural adhesive.

[0045] Mix component A and component B at a weight ratio of 100:50 to obtain a two-component toughened impact-resistant epoxy structural adhesive. The initial viscosity is 8600 cps, a...

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Abstract

The invention provides a two-component toughened anti-shock epoxy structural adhesive and a preparation method thereof. The two-component toughened anti-shock epoxy structural adhesive comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of epoxy resin, 10-50 parts of modified polysulfide rubber and 0-30 parts of a reactive diluent; the component Bcomprises the following raw materials in parts by weight: 20-50 parts of a curing agent and 1-3 parts of an accelerant; and the component A and the component B are mixed at the weight ratio of 100 to (20-80), so as to prepare the two-component toughened anti-shock epoxy structural adhesive. The method has the advantages that the two-component toughened anti-shock epoxy structural adhesive is small in smell, convenient to construct, long in working life, slow in heat release; the prepared epoxy material is good in flexibility, high in bonding strength and good in damping property, and can be widely applied to the fields such as electronics, machinery, ships, automobiles and buildings.

Description

technical field [0001] The invention relates to a high-epoxy structural adhesive and a preparation method thereof, in particular to a two-component toughened impact-resistant epoxy structural adhesive and a preparation method thereof. Background technique [0002] Due to the characteristics of high strength, low price, simple process and excellent comprehensive performance of epoxy resin cured products, epoxy resin has been widely used in various industrial fields, but at the same time, epoxy resin also has the problems of poor flexibility and low impact resistance. This limits the application of epoxy resin to a certain extent. [0003] The thiol groups at both ends of the liquid polysulfide rubber molecule can undergo an addition reaction with the epoxy group, and the group that can increase the flexibility is grafted on the epoxy resin, thereby increasing the flexible structure of the cured product, which can be cured at room temperature. Tough epoxy material to realize ...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/08C09J11/06
Inventor 俞成丙杨丹伍芳芳虞玺林明玲朱文婷李星
Owner SHANGHAI UNIV
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