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Corrosion-resistant polyurethane coating and preparation method thereof

A polyurethane coating and corrosion-resistant technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor anti-corrosion effects, and achieve good physical shielding performance, good physical shielding, and uniform thickness.

Inactive Publication Date: 2018-11-09
黄春梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paint film prepared by the polyurethane coating has excellent surface hardness, thermal stability, weather resistance and chemical resistance, but the anti-corrosion effect is still not good

Method used

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Embodiment Construction

[0014] The corrosion-resistant polyurethane coating of the present embodiment is prepared from the following raw materials in parts by weight: 40 parts of acetone, 120 parts of sodium hydroxide solution, 6 parts of anhydrous zinc chloride, 25 parts of n-butyraldehyde, 300 parts of cyclohexane 30 parts of anhydrous magnesium sulfate, 25 parts of trimellitic anhydride, 15 parts of xylitol, 12 parts of terephthalic acid, 20 parts of natural flake graphite, 80 parts of concentrated sulfuric acid, 4 parts of potassium persulfate, 6 parts of phosphorus pentoxide, 25 parts of hydrogen peroxide, 15 parts of aniline, 40 parts of ammonium persulfate solution, 6 parts of tributyl phosphate, 10 parts of hydroxymethyl cellulose, 4 parts of N-phenyl-α-aniline, 10 parts of propylene glycol butyl ether, N, 4 parts of N-dimethylbenzylamine, 25 parts of dimethylethanolamine, 70 parts of diphenylmethane diisocyanate, appropriate amount of hydrochloric acid solution, and appropriate amount of deio...

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Abstract

A corrosion-resistant polyurethane coating is characterized by being prepared from the following ingredients in parts by weight: acetone, sodium hydroxide solution, anhydrous zinc chloride, n-butylaldehyde, cyclohexane, anhydrous magnesium sulfate, trimellitic anhydride, xylitol, terephthalic acid, natural flake graphite, concentrated sulfuric acid, potassium peroxodisulfate, phosphorus pentoxide,hydrogen peroxide, aminobenzene, ammonium persulfate solution, tributyl phosphate, hydroxymethyl cellulose, N-phenyl-alpha-naphthamine, propylene glycol butyl ether, N,N-dimethylbenzylamine, dimethylethanolamine, methylene diphenyl diisocyanate, an appropriate amount of hydrochloric acid solution and an appropriate amount of deionized water. The polyurethane coating provided by the invention hasthe advantages of firm coating bonding, uniform thickness, strong salt water resistance, good wear resistance, good anti-corrosion performance, non-toxicity and environmental protection.

Description

technical field [0001] The invention relates to the field of anticorrosion coatings, in particular to a corrosion-resistant polyurethane coating and a preparation method thereof. Background technique [0002] Ductile iron pipes are mainly called centrifugal ductile iron pipes, which have the characteristics of iron essence, steel performance, good ductility, good sealing effect, and easy installation. In recent years, with the continuous expansion of urbanization, the demand for pipes, especially large-diameter pipes, has been increasing, and it has played an increasingly important role in the transformation of water supply pipelines and pipe networks in major cities at home and abroad. As these projects The preferred material for engineering is widely used in urban construction projects such as water transmission and gas transmission, providing a huge market for the ductile iron pipe industry. However, the transportation of urban sewage, natural gas and other substances ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C08G18/32
CPCC09D175/04C08G18/3203C09D5/08C08K3/042C08K7/00
Inventor 不公告发明人
Owner 黄春梅
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