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Modified polyether amine curing agent and preparation method and application thereof

A polyetheramine and curing agent technology, applied in coatings, epoxy resin coatings, etc., can solve the problems of complex preparation process of curing agent, high viscosity of curing agent, difficult reaction control, etc., and achieve easy popularization and application, gel time Long, low cost effect

Inactive Publication Date: 2016-06-01
惠州市彩田化工实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technology usually uses epoxy resin or single epoxy compound to modify polyetheramine, such as patent CN103224612A, patent CN103788343A, patent CN104231232A, however, this kind of method prepares modified polyetheramine epoxy resin curing agent The preparation process is more complicated, the reaction is difficult to control, it is easy to gel, and the prepared curing agent has a higher viscosity

Method used

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  • Modified polyether amine curing agent and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] S1. Pour 50 parts of polyetheramine curing agent D-230 into the reaction kettle, stir at a speed of 300 rpm at room temperature, add 25 parts of phenolic synergistic additive nonylphenol and 15 parts of 2,4 , 6-tris(dimethylaminomethyl)phenol, reacted for 2 hours;

[0028] S2. Add 10 parts of benzyl alcohol and raise the temperature to 50°C to continue the reaction for 2 hours, then stop the heating, and evacuate to 300Pa to obtain a light yellow transparent liquid, which is the modified polyetheramine curing agent.

Embodiment 2

[0030] S1. Pour 45 parts of polyetheramine curing agent D-230 into the reaction kettle, stir at a speed of 500 rpm at room temperature, add 30 parts of phenolic synergistic additive dodecylphenol and 10 parts of 2 , 4,6-tris(dimethylaminomethyl)phenol, reacted for 1.5 hours;

[0031] S2. Add 15 parts of benzyl alcohol and raise the temperature to 50°C to continue the reaction for 1 hour, then stop heating, and evacuate to 300Pa to obtain a light yellow transparent liquid, which is the modified polyetheramine curing agent.

Embodiment 3

[0033] S1. Pour 40 parts of polyetheramine curing agent D-400 into the reaction kettle, stir at a speed of 400 rpm at room temperature, add 20 parts of phenolic synergistic additive nonylphenol and 5 parts of 2,4 , 6-tris(dimethylaminomethyl)phenol, reacted for 1 hour;

[0034] S2. Add 20 parts of benzyl alcohol and raise the temperature to 45°C to continue the reaction for 2 hours, then stop the heating, and evacuate to 300Pa to obtain a light yellow transparent liquid, which is the modified polyetheramine curing agent.

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Abstract

The invention discloses a modified polyether amine curing agent and a preparation method thereof. The modified polyether amine curing agent is prepared from, by weight, 40-60 parts of a polyether amine curing agent, 20-30 parts of a phenol synergy additive, 5-20 parts of phenylcarbinol and 5-20 parts of 2,4,6-tris(dimethylaminomethyl)phenol. The prepared modified polyether amine curing agent is small in viscosity, long in gelation time and easy to prepare. An epoxy resin paint film prepared through the modified polyether amine curing agent is good in impact resistance, high in tensile adhesive strength, good in wear resistance and excellent in overall performance.

Description

technical field [0001] The invention belongs to the technical field of epoxy resin curing agent preparation, in particular, the invention relates to a modified polyetheramine curing agent and its preparation method and application. Background technique [0002] To make the epoxy resin have excellent performance, the epoxy resin must be cross-linked with the curing agent to form a network-like macromolecule. Polyether amine curing agent has the advantages of long service life, light color, low viscosity, good leveling, etc. Its cured product is better than other amine cured products in terms of bonding strength, water whitening resistance and impact resistance. However, pure polyetheramine D-230 or D-400 reacts very slowly with epoxy resin, and the surface drying time is as long as 12 hours. It often needs to be heated before use, and its low temperature resistance and moisture resistance are poor, which makes it use restricted. Therefore, the polyetheramine curing agent ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/62C08G59/56C09D163/00
CPCC08G59/56C08G59/62C08G59/623C09D163/00
Inventor 聂朝阳赵庆文
Owner 惠州市彩田化工实业有限公司
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