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Epoxy resin curing agent and preparation method thereof

A technology of epoxy resin curing and epoxy resin, which is applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., which can solve the problems of poor impact resistance, wear resistance and corrosion resistance, low hardness of the coating film, and easy discoloration and other issues, to achieve the effect of improving weather resistance and high temperature resistance, good toughness and good adhesion

Pending Publication Date: 2019-05-31
XIAMEN YUANCHUANGLI TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The purpose of the present invention is to provide an epoxy resin curing agent with high hardness, flexibility, weather resistance, impact resistance and corrosion resistance, which solves the problems of high brittleness and poor weather resistance in existing epoxy resin curing agents. And the technical problems of easy discoloration, low hardness of the coating film, poor impact resistance, wear resistance and corrosion resistance

Method used

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  • Epoxy resin curing agent and preparation method thereof
  • Epoxy resin curing agent and preparation method thereof
  • Epoxy resin curing agent and preparation method thereof

Examples

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Embodiment 1

[0064] In this embodiment, the polyamine compound is composed of isophorone diamine and triethylene tetramine, and the mass ratio of the isophorone diamine and triethylene tetramine is 1:1. The components and parts by weight of the epoxy resin curing agent of this embodiment are as follows: 15 parts of isophorone diamine, 15 parts of triethylenetetramine, 20 parts of benzyl alcohol, 5 parts of E-51 epoxy resin, carbonic acid 3 parts of acrylate, 10 parts of polyether 400 (molecular weight), and 0.05 parts of benzophenone-4.

[0065] The epoxy resin curing agent described in this embodiment is prepared through the following steps:

[0066] Step 1: Add isophorone diamine, triethylenetetramine, and benzyl alcohol into the reaction kettle in sequence, and mix them uniformly by stirring to obtain a mixture.

[0067] Step 2: After heating the mixture to a temperature of 40°C, start dripping epoxy resin, and the dripping is completed within 30 minutes, and then continue to react for 15 min...

Embodiment 2

[0077] In this embodiment, the polyamine compound is composed of isophorone diamine and triethylene tetramine, and the mass ratio of the isophorone diamine and triethylene tetramine is 4:1.

[0078] The components and parts by weight of the epoxy resin curing agent of this embodiment are as follows: 40 parts of isophorone diamine, 10 parts of triethylenetetramine, 40 parts of benzyl alcohol, 10 parts of E-44 epoxy resin, and carbonic acid 8 parts of acrylate, 20 parts of polyether 400 (molecular weight), and 0.1 part of benzophenone-3.

[0079] The epoxy resin curing agent described in this embodiment is prepared through the following steps:

[0080] Step 1: Add isophorone diamine, triethylenetetramine, and benzyl alcohol into the reaction kettle in sequence, and mix them uniformly by stirring to obtain a mixture.

[0081] Step 2: After heating the mixture to a temperature of 50° C., start dripping epoxy resin, and the dripping is completed within 30 minutes, and then continue to reac...

Embodiment 3

[0091] In this embodiment, the polyamine compound is composed of isophorone diamine and triethylene tetramine, and the mass ratio of the isophorone diamine and triethylene tetramine is 3:1. The components and parts by weight of the epoxy resin curing agent of this embodiment are as follows: 30 parts of isophorone diamine, 10 parts of triethylenetetramine, 30 parts of benzyl alcohol, 8 parts of E-51 epoxy resin, and carbonic acid 6 parts of acrylate, 15 parts of polyether 400, and 0.08 parts of ethylhexyl methoxycinnamate.

[0092] The epoxy resin curing agent described in this embodiment is prepared through the following steps:

[0093] Step 1: Add isophorone diamine, triethylenetetramine, and benzyl alcohol into the reaction kettle in sequence, and mix them uniformly by stirring to obtain a mixture.

[0094] Step 2: After heating the mixture to a temperature of 45°C, start dripping epoxy resin, and the dripping is completed within 30 minutes, and then continue to react for 15 minut...

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Abstract

The invention relates to an epoxy resin curing agent. The epoxy resin curing agent comprises, by weight , 30-50 parts of polyamine compound, 20-40 parts of benzyl alcohol, 5-10 parts of epoxy resin, 3-8 parts of propylene carbonate, 10-20 parts of polyether 400, 0.05-0.1 part of yellow-resistant auxiliary and 1-10 parts of amino-terminated hyperbranched polyamide surface grafted graphene oxide, wherein the polyamine compound comprises one or two of aliphatic polyamine and cycloaliphatic polyamine; the aliphatic polyamine is diethylenetriamine, triethylene tetramine or hexanediamine; the cycloaliphatic polyamine is m-xylylenediamine or isophorone diamine; the polyamine compound comprises isophorone diamine and triethylene tetramine, and the mass ratio of the isophorone diamine to the triethylene tetramine is (1-4):1.

Description

Technical field [0001] The invention relates to the technical field of chemical engineering, and relates to a curing agent, in particular to an epoxy resin curing agent and a method for preparing the epoxy resin curing agent. Background technique [0002] Epoxy resin is a kind of thermoplastic polymer prepolymer. It has excellent mechanical and thermal properties. Epoxy resin is widely used in civil engineering, electronic appliances, aerospace, automotive machinery and other fields, and is an important component of national production In part, China is currently the world's largest producer of epoxy resins, with 37.1% of the world's output. . However, epoxy resin is an amorphous viscous liquid. It is plastic when heated and has no obvious melting point. When heated, it becomes soft and gradually melts and becomes sticky. It is insoluble in water and does not harden by itself, so it has almost no separate use value. The epoxy resin must react with the curing agent to transform ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/62C08G59/46C08G59/50C08G59/56C08G59/60C08G83/00C09D163/00C09D5/08
Inventor 周丕严高雨
Owner XIAMEN YUANCHUANGLI TECH SERVICE CO LTD
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