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Modified polyether amine epoxy curing agent and preparation method thereof

A technology of polyether amine epoxy and curing agent, which is applied in the field of polyether amine epoxy curing agent, which can solve the problems of rough surface, low viscosity, low hardness, low temperature resistance and high humidity resistance of the cured product, and achieve raw material The composition is scientific and reasonable, the viscosity is low, the effect of low temperature resistance and high humidity resistance is improved

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

[0003] For this reason, the technical problem to be solved by the present invention is to overcome the disadvantages of the existing polyetheramine epoxy curing agent with low viscosity and hardness, the surface of the cured product is not smooth, and the low temperature resistance and high humidity resistance are poor, and then provide an improved Permanent polyetheramine epoxy curing agent and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A modified polyetheramine epoxy curing agent, which includes the following raw materials in parts by weight: 45 grams of amino-terminated polyether (D-230), 2 grams of N-aminoethylpiperazine (N-AEP), 8 grams of benzyl alcohol gram, accelerator (DMP-30) 3 grams, nonylphenol or tert-butylphenol 20 grams, epoxy resin (E-51) 6 grams.

[0017] The preparation method of described modified polyetheramine epoxy curing agent comprises the following steps:

[0018] (1) each raw material according to the weight ratio;

[0019] (2) Add amino-terminated polyether (D-230), N-aminoethylpiperazine (N-AEP), and benzyl alcohol to the reaction kettle under negative pressure in sequence, mix and stir, and then evacuate;

[0020] (3) Add nonylphenol or tert-butylphenol through the temporary feeding port at the top of the reactor, then vacuumize for the second time, and make the vacuum reach -0.09MPa;

[0021] (4) Quickly add the diluted epoxy resin into the reaction kettle through the con...

Embodiment 2

[0025] In the present embodiment, the weight of each raw material in the modified polyetheramine epoxy curing agent is: 60 grams of amino-terminated polyether (D-230), 4 grams of N-aminoethylpiperazine (N-AEP), 6 grams of benzyl alcohol, 7 grams of accelerator (DMP-30), 30 grams of nonylphenol or tert-butylphenol, 10 grams of epoxy resin (E-51).

[0026] The modified polyetheramine epoxy curing agent in this embodiment has stable performance, low irritation, high color transparency, low viscosity, bright surface of the cured product, Shore hardness of 80-84D, adhesion level 1, water resistance, Excellent solvent resistance, etc.

Embodiment 3

[0028] In the present embodiment, the weight of each raw material in the modified polyetheramine epoxy curing agent is: 55 grams of amino-terminated polyether (D-230), 5 grams of N-aminoethylpiperazine (N-AEP), 4 grams of benzyl alcohol, 8 grams of accelerator (DMP-30), 25 grams of nonylphenol or tert-butylphenol, 9 grams of epoxy resin (E-51).

[0029] The modified polyetheramine epoxy curing agent in this embodiment has stable performance, low irritation, high color transparency, low viscosity, bright surface of the cured product, Shore hardness of 81-84D, adhesion level 1, water resistance, Excellent solvent resistance, etc.

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Abstract

The invention discloses a modified polyether amine epoxy curing agent. The modified polyether amine epoxy curing agent comprises the following raw materials in parts by weight: 45-60 parts of amine-terminated polyether (D-230), 2-5 parts of N-aminoethylpiperazine (N-AEP), 4-10 parts of benzyl alcohol, 3-8 parts of an accelerant (DMP (Dimethyl Phthalate)-30), 20-30 parts of nonyl phenol or tert-butyl phenol and 6-10 parts of epoxy resin (E-51). The modified polyether amine epoxy curing agent is scientific and reasonable in raw material component ratio; the modified polyether amine epoxy curing agent is low in viscosity, high in hardness and good in glossiness; the adhesive force, the solvent property, the low-temperature resistance and high wet resistance can be remarkably improved; the temperature and time of reaction in the preparation process can be effectively controlled; the cost is lowered; therefore, the modified polyether amine epoxy curing agent has a broad market application prospect.

Description

technical field [0001] The invention relates to the technical field of polyetheramine epoxy curing agents, in particular to a modified polyetheramine epoxy curing agent and a preparation method thereof. Background technique [0002] Polyetheramine epoxy curing agents are widely used in some composite materials such as floor coatings and jewelry glues, but because traditional polyetheramine curing agents have high amine value, large proportion, high price, low hardness and low adhesion The disadvantages, and the low temperature resistance and high humidity resistance are poor, and it is not easy to operate and use, so it brings a lot of inconvenience to the use. Contents of the invention [0003] For this reason, the technical problem to be solved by the present invention is to overcome the disadvantages of the existing polyetheramine epoxy curing agent with low viscosity and hardness, the surface of the cured product is not smooth, and the low temperature resistance and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/62C08G59/56
Inventor 宋良俊
Owner 宋良俊
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