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A kind of curing agent for steel bar anticorrosion powder coating

A powder coating and curing agent technology, applied in anti-corrosion coatings, powder coatings, coatings, etc., can solve the problems of low coating flexibility and insufficient reactivity, and achieve the effect of increasing reactivity, flexibility and adhesion

Inactive Publication Date: 2015-11-25
河北欧特涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of low flexibility and insufficient reactivity of the coating prepared after the curing agent of the existing steel bar anticorrosion powder coating is added to the powder coating, the invention provides a kind of curing agent of the steel bar anticorrosion powder coating. The curing agent not only has high reactivity, but also improves the flexibility and adhesion of the coating made by adding the curing agent to the powder coating

Method used

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  • A kind of curing agent for steel bar anticorrosion powder coating

Examples

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Effect test

Embodiment 1

[0011] Preparation of conventional phenolic curing agents

[0012] Using oil heating bulk polymerization method, 100g of epoxy resin E-44 (purchased from Yueyang Petrochemical), 26g of bisphenol A (purchased from Qilu Petrochemical) and 6g of phenolic curing agent CT-3 (purchased from Qilu Petrochemical) Add to the reaction kettle, stir at 180°C for 1-2h, then cool down the whole system to 140°C, then add 26g of bisphenol A and 6g of phenolic curing agent CT-3, and stir at the reaction temperature of 140°C for 1-2h, Prepare conventional phenolic curing agents.

Embodiment 2

[0014] Prepare curing agent of the present invention

[0015] Add the conventional phenolic curing agent prepared in Example 1 and 13.1 g of monovalent polyetheramine M-1000 (purchased from Dalian Liansheng Trading Co., Ltd.) into the reactor, and stir at a reaction temperature of 140° C. for 0.5-1 h. The resulting material is released from the reactor while it is hot, cooled and pulverized to obtain the curing agent of the present invention.

Embodiment 3

[0017] Prepare curing agent of the present invention

[0018] Using oil heating bulk polymerization method, 100g of epoxy resin E-44 (purchased from Yueyang Petrochemical), 30g of bisphenol A (purchased from Qilu Petrochemical) and 8g of phenolic curing agent CT-3 (purchased from Qilu Petrochemical) Add to the reaction kettle, stir at 170°C for 1-2h, then cool down the whole system to 140°C, then add 30g of bisphenol A and 6g of phenolic curing agent CT-3, and stir at the reaction temperature of 140°C for 1-2h, Finally, 8.7g of binary polyetheramine ED-2003 (purchased from Dalian Liansheng Trading Co., Ltd.) was added to the reactor, stirred at a reaction temperature of 140°C for 0.5-1h, and the resulting material was released from the reactor while it was hot, cooled and crushed , to prepare the curing agent of the present invention.

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Abstract

The invention relates to a curing agent for a rebar anti-corrosion powder coating, comprising a phenol curing agent and polyetheramine. According to the invention, by adding polyetheramine in the phenol curing agent, the reaction activity of the curing agent is increased, and the flexibility and adhesive force of the coat prepared by using the powder coating containing the curing agent are increased.

Description

technical field [0001] The invention relates to a curing agent, in particular to a curing agent for steel bar anticorrosion powder coating. Background technique [0002] With the construction of high-speed railways and docks in China, higher and higher requirements are put forward for the life of buildings, and the life of buildings depends on the corrosion resistance of steel bars used in buildings. In the case of steel bars without anti-corrosion, seawater or groundwater will cause damage to the steel bars, and the corrosion and expansion of the steel bars will increase the internal stress of the building, eventually resulting in damage to the building or greatly shortening its service life. Therefore, the anti-corrosion treatment of steel bars is very important. Spraying powder coating on steel bars for anticorrosion is a better treatment method for steel bars. Over the years, practice has proved that epoxy resin anti-corrosion powder coatings are very successful in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C09D5/03C09D5/08
Inventor 胡立军吴流平
Owner 河北欧特涂料有限公司