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Modified graphene containing inflaming-retarding corrosion-resisting coating

A graphene and corrosion-resistant technology, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve problems such as accelerated electrolyte penetration, weak flame retardant and heat resistance, and unfavorable anti-corrosion

Inactive Publication Date: 2016-09-21
张哲夫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the thickness of the coating also has a great influence on the anti-corrosion performance. Generally speaking, if the coating is thin, cracks will form in the zinc oxide, and the penetration of the electrolyte will be accelerated near the zinc oxide, so it is not conducive to anti-corrosion
At the same time, the current coatings still have the disadvantage of poor flame retardancy and heat resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) ZnCl 2 , FeCl 3 and FeCl 2 Dissolve them in water respectively, configure as a solution with a concentration of 1mol / L, mix the three solutions, and keep Zn 2+ : Fe 2+ : Fe 3+ The molar ratio is 3:2:1, drop a certain amount of alkaline solution in a water bath with a constant temperature of 60°C, and react for 2 hours to form a hydrotalcite-like precipitate with a layered structure;

[0019] (2) Dissolve graphene oxide in water, ultrasonically disperse to obtain graphene oxide dispersion, adjust the pH value of the dispersion to 3 with acetic acid, add triethanolamine, stir evenly, wash and filter with deionized water after the reaction ends; then Disperse the filter cake, add sodium borohydride to the solvent of deionization and ethanol, reflux at 60°C for 4 hours, and filter to obtain triethanolamine-modified graphene;

[0020] (3) Add 2 mass parts of triethanolamine-modified graphene obtained in step (2) to 6 mass parts of hydrotalcite-like precipitates obta...

Embodiment 2

[0023] (1) ZnCl 2 , FeCl 3 and FeCl 2 Dissolve them in water respectively, and prepare a solution with a concentration of 2mol / L. Mix the three solutions to keep Zn 2+ : Fe 2+ : Fe 3+ The molar ratio is 5:3:1, drop a certain amount of alkaline solution in a constant temperature 80°C water bath, react for 3 hours, and form a hydrotalcite-like precipitate with a layered structure;

[0024] (2) Dissolve graphene oxide in water, ultrasonically disperse to obtain a graphene oxide dispersion, adjust the pH value of the dispersion to 5 with acetic acid, add triethanolamine, stir well, wash and filter with deionized water after the reaction is over; then Disperse the filter cake, add sodium borohydride to the solvent of deionization and ethanol, reflux at 80°C for 10 hours, and filter to obtain triethanolamine-modified graphene;

[0025] (3) 2 mass parts of triethanolamine modified graphene obtained by step (2) and 1 mass part of cetyltrimethylammonium chloride are added in the 6...

Embodiment 3

[0028] (1) ZnCl 2 , FeCl 3 and FeCl 2 Dissolve them in water respectively, configure as a solution with a concentration of 1.5mol / L, mix the three solutions, and keep Zn 2+ : Fe 2+ : Fe 3+ The molar ratio is 4:3:1, drop a certain amount of alkaline solution in a constant temperature 70°C water bath, react for 3 hours, and form a hydrotalcite-like precipitate with a layered structure;

[0029] (2) Dissolve graphene oxide in water, ultrasonically disperse to obtain a graphene oxide dispersion, adjust the pH value of the dispersion to 4 with acetic acid, add triethanolamine, stir evenly, wash and filter with deionized water after the reaction is over; then Disperse the filter cake, add sodium borohydride to the solvent of deionization and ethanol, reflux at 70°C for 6 hours, and filter to obtain triethanolamine-modified graphene;

[0030] (3) 2 mass parts of triethanolamine modified graphene obtained by adding step (2) and 1 mass part of diallyl dimethyl ammonium chloride in...

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PUM

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Abstract

The invention relates to a modified graphene containing inflaming-retarding corrosion-resisting coating. Laminar hydrotalcite-like compounds and modified graphene cooperate with an intercalator for modification, and the high-corrosion-resistance coating is prepared. The modified graphene is added, therefore, the adhesive force of an inorganic coating to metal can be promoted, the interface attribute of the coating is improved, the coating has good corrosion-preventing performance on a thick coating, and excellent corrosion resistance of the coating can still be kept for a thin coating.

Description

technical field [0001] The invention relates to a flame-retardant and corrosion-resistant coating containing modified graphene, which belongs to the field of building materials. Background technique [0002] Anti-corrosion coatings are primers that provide cathodic protection and are typically applied to industrial equipment. It can protect the steel substrate and reduce the risk of corrosion. With its excellent weather resistance, solvent resistance, especially excellent corrosion resistance and self-repairing function, the coating has been widely used in heavy-duty anti-corrosion fields such as railway bridges, port terminals, and ship containers. large-scale application. [0003] Current research generally uses inorganic non-metallic corrosion inhibitors or additives to replace part of the zinc particles to improve the corrosion resistance of the coating, or to change the morphology of the zinc particles to study its impact on the corrosion of the coating. In addition, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/10C09D5/08C09D5/18C09C1/46C09C3/08
CPCC01P2006/37C09C1/46C09C3/08C09D1/00C09D5/08C09D5/103C09D5/106C09D5/18
Inventor 张哲夫
Owner 张哲夫
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