High-performance modified epoxy alicyclic amine curing agent and preparation method thereof

An epoxy grease, high-performance technology, applied in the field of modified epoxy alicyclic amine high-performance curing agent and its preparation, can solve the problems of large proportion, inconvenient operation and use, high alicyclic amine amine value, and achieves Improve adhesion, effective control of reaction temperature and time, and stable performance

Inactive Publication Date: 2015-03-11
宋良俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of epoxy resin curing agents. Take isophorone diamine as an example. Isophorone diamine is referred to as IPDA. A mixture of two isomers of aminomethyl 3,5,5-trimethylcyclohexylamine, as a cycloaliphatic diamine, IPDA can be used in all commo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of modified epoxy alicyclic amine high-performance curing agent described in the present embodiment, comprises the steps:

[0028] S1: Add 20 grams of isophorone diamine, 40 grams of benzyl alcohol, 15 grams of 1,3-cyclohexanedimethylamine, 30 grams of N-aminoethylpiperazine, 15 grams of amino-terminated polyether in the reaction kettle, Stir well after mixing;

[0029] S2: Connect a vacuum pipeline with negative pressure into the reaction kettle, drop 35 grams of epoxy resin into the reaction kettle through the control valve at a constant speed and concentrate the reaction, and at the same time turn on the circulating cooling water to control the reaction temperature at 75°C , the dropping time is controlled at 35 minutes;

[0030] S3: keep the materials in the reaction kettle for concentrated reaction for 3 hours, close the circulating cooling water until the temperature cools down to 55° C., and discharge the material in a vacuum.

[00...

Embodiment 2

[0036] A kind of preparation method of modified epoxy alicyclic amine high-performance curing agent described in the present embodiment, comprises the steps:

[0037] S1: Add 30 grams of isophorone diamine, 45 grams of benzyl alcohol, 8 grams of 1,3-cyclohexanedimethylamine, 35 grams of N-aminoethylpiperazine, 20 grams of amino-terminated polyether in the reaction kettle, Stir well after mixing;

[0038] S2: Connect a vacuum pipeline with negative pressure into the reaction kettle, drop 10 grams of epoxy resin into the reaction kettle through the control valve at a constant speed and concentrate the reaction, and at the same time turn on the circulating cooling water to control the reaction temperature at 80°C , the dropping time is controlled at 40 minutes;

[0039] S3: keep the materials in the reaction kettle for concentrated reaction for 3 hours, close the circulating cooling water until the temperature is cooled to 50° C., and discharge the material in a vacuum.

[0040...

Embodiment 3

[0044] A kind of preparation method of modified epoxy alicyclic amine high-performance curing agent described in the present embodiment comprises the following steps:

[0045] S1: Add 40 grams of isophorone diamine, 30 grams of benzyl alcohol, 11 grams of 1,3-cyclohexanedimethylamine, 38 grams of N-aminoethylpiperazine, 10 grams of amino-terminated polyether in the reaction kettle, Stir well after mixing;

[0046] S2: Connect a vacuum pipeline with negative pressure into the reaction kettle, drop 21 grams of epoxy resin into the reaction kettle through the control valve at a constant speed and concentrate the reaction, and at the same time turn on the circulating cooling water to control the reaction temperature at 85°C , the dropping time is controlled at 30 minutes;

[0047] S3: keep the materials in the reaction kettle for concentrated reaction for 3 hours, close the circulating cooling water until the temperature cools down to 45° C., and discharge the material in a vacuu...

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Abstract

The invention discloses a high-performance modified epoxy alicyclic amine curing agent. The high-performance modified epoxy alicyclic amine curing agent has the characteristics of being stable in performance and low in irritability and specifically has the following characteristics: the color is transparent, the temperature tolerance can reach 120-150 DEG C, the shore hardness reaches 80-85D, the adhesive force reaches the class A, the alcohol tolerance can have no change in color for 15 days, and the shearing strength is 12-16 MPa; the high-performance modified epoxy alicyclic amine curing agent can be widely applied to the fields of high-temperature baking type anti-yellowing glass paint, normal-temperature self-drying glass paint, solvent-resistant high-adhesion wine bottle paint, adhesives and transparent anti-yellowing electronic potting. The invention also provides a preparation method of the high-performance modified epoxy alicyclic amine curing agent; the raw material components are scientific and reasonable in ratio; the preparation method is scientific and reasonable; the temperature and the time of reaction in the preparation process can be effectively controlled; the curing agent with moderate viscosity, rate and ratio can be prepared; the self moisture absorption property and brittleness of the alicyclic amine can be greatly improved; the adhesive force, the adhesive performance and the solvent resistance of the alicyclic amine are improved.

Description

technical field [0001] The invention relates to the technical field of curing agent preparation, in particular to a modified epoxy alicyclic amine high-performance curing agent and a preparation method thereof. Background technique [0002] Epoxy resin is an important thermosetting plastic. It has a series of excellent properties, such as high bonding strength, small shrinkage, good dielectric properties and heat resistance, so it is widely used in electronics, adhesives, coatings, etc. , construction, national defense and many other production fields. [0003] Epoxy resin endows epoxy resin paint with excellent properties, and epoxy resin must be cross-linked with curing agent to form molecules of network structure. There are many kinds of epoxy resin curing agents. Take isophorone diamine as an example. Isophorone diamine is referred to as IPDA. A mixture of two isomers of aminomethyl 3,5,5-trimethylcyclohexylamine, as a cycloaliphatic diamine, IPDA can be used in all co...

Claims

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Application Information

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IPC IPC(8): C08G59/64C08G59/56
Inventor 宋良俊
Owner 宋良俊
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