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Epoxy resin adhesive with fast curing speed and good mechanical properties

An epoxy resin and rapid curing technology, which is applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of many raw materials and the mechanical properties of epoxy adhesive need to be improved, and achieve short curing time and mechanical properties. Excellent performance and good mechanical properties

Active Publication Date: 2015-01-28
XIAMEN WELDTONE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the Chinese patent application number 200410022810.3, a fast-curing two-component epoxy adhesive and its preparation method are disclosed. It uses more raw materials, and the mechanical properties of the prepared epoxy adhesive also need to be improved.

Method used

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  • Epoxy resin adhesive with fast curing speed and good mechanical properties
  • Epoxy resin adhesive with fast curing speed and good mechanical properties
  • Epoxy resin adhesive with fast curing speed and good mechanical properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A kind of epoxy resin adhesive that can be cured rapidly and good mechanical property, comprises the component of following parts by weight:

[0027] E-51 epoxy resin 100 parts

[0028] E-44 epoxy resin 24 parts

[0029] 14 parts organic montmorillonite

[0030] 31 parts of curing agent

[0031] Active diluent 13 parts

[0032] Non-reactive diluent 5 parts

[0033] Filling 10 parts

[0034] The organic montmorillonite is modified by eighteen quaternary ammonium salts, the main component is high-purity montmorillonite, the content is 96% to 98%, the water content is ≤3%, and the interplanar distance is 2.1nm;

[0035] The curing agent is obtained by reacting m-xylylenediamine, ethylene glycol diglycidyl ether and acrylonitrile at 90°C for 1.5 hours, wherein the molar ratio of each reaction component is m-xylylenediamine: ethylene diamine Alcohol diglycidyl ether: acrylonitrile=1:1.8:1.9;

[0036] Described inactive diluent is dibutyl phthalate, and f...

Embodiment 2

[0043] Embodiment 2: a kind of epoxy resin adhesive that can cure rapidly and good mechanical property, comprises the component of following parts by weight:

[0044] E-51 epoxy resin 100 parts

[0045] E-44 epoxy resin 17 parts

[0046] Organic montmorillonite 12 parts

[0047] Curing agent 22 parts

[0048] Active diluent 10 parts

[0049] 3 parts non-reactive thinner

[0050] Filling 8 servings

[0051] The curing agent is obtained by reacting m-xylylenediamine, ethylene glycol diglycidyl ether and acrylonitrile at 80°C for 1 hour, wherein the molar ratio of each reaction component is m-xylylenediamine:ethylenediamine Alcohol diglycidyl ether: acrylonitrile=1:1.6:1.4;

[0052] The preparation method of the present invention is as follows:

[0053] 1) Mix 80 parts of E-51 epoxy resin with organic montmorillonite, heat to 70°C, keep for 1 hour, cool to 20°C and then add inactive diluent dibutyl phthalate;

[0054] 2) Mix the remaining 20 parts of E-51 epoxy resin and ...

Embodiment 3

[0057] Embodiment 3: a kind of epoxy resin adhesive that can cure rapidly and good mechanical property, comprises the component of following parts by weight:

[0058] E-51 epoxy resin 100 parts

[0059] E-44 epoxy resin 31 parts

[0060] Organic montmorillonite 17 parts

[0061] Curing agent 38 parts

[0062] Active diluent 16 parts

[0063] 8 parts non-reactive diluent

[0064] Filling 12 parts

[0065] The curing agent is obtained by reacting m-xylylenediamine, ethylene glycol diglycidyl ether and acrylonitrile at 110°C for 2 hours, wherein the molar ratio of each reaction component is m-xylylenediamine:ethylenediamine Alcohol diglycidyl ether: acrylonitrile=1:2.1:2.3;

[0066] The preparation method of the present invention is as follows:

[0067] 1) Mix 80 parts of E-51 epoxy resin with organic montmorillonite, heat to 80°C, keep for 2 hours, cool to 25°C and then add dibutyl phthalate, a non-reactive diluent;

[0068] 2) Mix the remaining 20 parts of E-51 epoxy resi...

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Abstract

The invention aims at providing an epoxy resin adhesive with fast curing speed and good mechanical properties and belongs to the field of adhesives. Organic montmorillonite has a certain toughening effect against epoxy resin, the organic montmorillonite is combined with a curing agent, a diluent and other substances of the epoxy resin adhesive provided by the invention, and by adopting a process in the invention, the toughening effect is better, and the prepared epoxy resin adhesive has better mechanical properties; and the curing time of the ordinary epoxy resin adhesive at room temperature is above 24h generally, while the curing time of the adhesive prepared by adopting the formula and the process, provided by the invention, is short, which only needs 5-12min, and the adverse effects on the mechanical properties of the adhesive can be simultaneously avoided. The adhesive prepared by the process disclosed by the invention can combine the characteristics of short curing time and excellent mechanical properties.

Description

technical field [0001] The invention relates to an epoxy resin adhesive, in particular to an epoxy resin adhesive that can be cured quickly and has good mechanical properties. Background technique [0002] Epoxy resin adhesives known as all-purpose adhesives are usually used as structural adhesives because of their high tensile strength, shear strength, moisture resistance, and low curing shrinkage. However, epoxy resin has disadvantages such as high brittleness, low impact strength, and easy cracking, so it is necessary to modify epoxy resin to enhance its toughness. The main modification methods include rubber elastomer modification, thermoplastic resin modification, interpenetrating network modification, and thermotropic liquid crystal polymer modification. However, the first three modification methods will make the epoxy resin obtain toughness while reducing the mechanical properties of the material; while the modification of thermotropic liquid crystal polymers is diff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J11/04C09J11/06
Inventor 杨志宏伍军红谌伟庆李伟荣
Owner XIAMEN WELDTONE TECH CO LTD
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