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Acid-resistant, hydrogen-sulfide-resistant and wear-resistant flexible corrosion prevention coating and preparation method thereof

A technology of anti-corrosion coatings and hydrogen sulfide resistance, applied in the field of coatings, can solve problems such as the use of functional additives that cannot meet the needs of coatings, and achieve long-term effective results

Active Publication Date: 2016-08-03
DAQING CITY HUAYU PETROLEUM MASCH MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these substances must be in a water-containing environment and have great water solubility. In the coating, it is easy to form a permeable film, which cannot be used as a functional additive for coatings.

Method used

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  • Acid-resistant, hydrogen-sulfide-resistant and wear-resistant flexible corrosion prevention coating and preparation method thereof
  • Acid-resistant, hydrogen-sulfide-resistant and wear-resistant flexible corrosion prevention coating and preparation method thereof
  • Acid-resistant, hydrogen-sulfide-resistant and wear-resistant flexible corrosion prevention coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The composition of this coating is prepared according to the following component ratio (parts by weight):

[0041] Component A: 25 parts of resin, 2 parts of wetting agent, 20 parts of polyvinyl butyral, 30 parts of mixed solvent, 8 parts of ethanol, 1 part of inorganic anti-rust and organic rust pigment, 1 part of methyl oleate, 5 parts of zinc phosphate Parts, 10 parts of hollow ceramics, wherein, the resin is a mixture of bisphenol A epoxy resin: polyurethane resin according to the mass ratio of 5: 3, and the mixed solvent is isophorone: pentanone: butyl acetate according to the mass ratio of 20: 5: 4, the average particle size of hollow ceramics is 5 microns, which is prepared by the following method: Al2O3 and SiO 2 The mixture of hollow ceramics, the mass ratio is 5:1; the wetting agent has the following structural formula:

[0042]

[0043] Wherein, X is 10.

[0044] Component B consists of triethylenediamine, H1 and H2 in a mass ratio of 8:1:2, wherein H1 i...

Embodiment 2

[0052] The composition of this coating is prepared according to the following component ratio (weight percentage):

[0053]Component A: 50 parts of resin, 3 parts of wetting agent, 12 parts of polyvinyl butyral, 21 parts of mixed solvent, 10 parts of ethanol, 2 parts of inorganic anti-rust and organic rust pigment, 1.5 parts of methyl oleate, 5.2 parts of zinc phosphate Parts, 8.3 parts of hollow ceramics, wherein, resin is the mixture of bisphenol A epoxy resin, polyurethane resin: bisphenol F epoxy resin=10: 2: 5, and mixed solvent is isophorone: pentanone: butyl acetate : Ethylene glycol butyl ester is a mixture of 20:5:2:1 by mass ratio, and the average particle diameter of hollow ceramics is 5 microns, which is prepared by the following method: Al2O3 and SiO 2 The mixture of hollow ceramics has a mass ratio of 8:1; the wetting agent has the following structural formula: where X is 15.

[0054]

[0055] Component B consists of triethylenediamine, H1 and H2 in a mass ra...

Embodiment 3

[0063] Component A: 50 parts of resin, 5 parts of wetting agent, 20 parts of polyvinyl butyral, 20 parts of mixed solvent, 9 parts of ethanol, 5 parts of inorganic anti-rust and organic rust pigment, 5 parts of methyl oleate, 5 parts of zinc phosphate Parts, 6 parts of hollow ceramics, wherein the resin is epoxy phenolic resin, and the mixed solvent is a mixture of isophorone: pentanone: butyl acetate: ethylene glycol butyl ester in a mass ratio of 20:5:2:1, and the hollow The average particle size of the ceramic is 5 microns, which is prepared by the following method: Al2O3 and SiO 2 The mixture of hollow ceramics, the mass ratio is 6:1; the wetting agent has the following structural formula:

[0064]

[0065] Wherein, X is 5.

[0066] Component B consists of triethylenediamine, H1 and H2 in a mass ratio of 9:1:2, where H1 is

[0067]

[0068] Wherein, R is OH, and A / B=10 / 1.

[0069] The above-mentioned components are mixed according to the formula amount, and then g...

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Abstract

The invention discloses an acid-resistant, hydrogen-sulfide-resistant and wear-resistant flexible corrosion prevention coating which comprises a component A and a component B. The component A comprises, by weight, 20-50 parts of resin, 5-20 parts of polyvinyl butyral, 20-30 parts of mixed solvent, 2-20 parts of ethyl alcohol, 1-5 parts of inorganic-organic anti-rust pigment, 1-5 parts of methyl oleate, 1-5 parts of a wetting agent, 5-20 parts of zinc phosphate and 6-25 parts of hollow ceramic; the component B is composed of triethylene diamine, H1 and H2 according to the mass ratio of (8-10): 1: 2, wherein the H1 and the H2 are from waste liquid of a pharmaceutical factory, and the mass ratio of the component A to the component B is 20: (1-20): 2. By means of the acid-resistant, hydrogen-sulfide-resistant and wear-resistant flexible corrosion prevention coating, the problem of hydrogen sulfide corrosion is effectively solved, the H1 and the H2 from waste liquid of the pharmaceutical factory are added, excellent effects of resisting to naphthenic acid, resisting to hydrogen sulfide corrosion and resisting to water corrosion are achieved, the coating can have acid-resistant, wear-resistant and corrosion-resistant performance, organic inhibitor is combined to the surface of an inorganic material, release of corrosion inhibitor is controlled, and the effect of long-term effectiveness is achieved.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to an acid-resistant, wear-resistant and flexible anti-corrosion coating, in particular to an acid-resistant, hydrogen sulfide-resistant, wear-resistant flexible anti-corrosion coating and a preparation method thereof. Background technique [0002] Petroleum pipelines and petroleum equipment are important infrastructures for the petroleum industry. These infrastructures are in the watery, sandy, acidic corrosive environment of the oil field. As the oil field enters the later stage of exploitation, the water content and sand content increase and the pH decreases, the acidity increases, the metal pipelines and equipment wear, and the corrosion becomes more serious. Although some measures have been taken, such as adding corrosion inhibitors, although the corrosion has been alleviated, but , with the increase of hydrogen sulfide and naphthenic acid content in oilfields, these measures cannot comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/14C09D163/00C09D163/04C09D175/04C09D5/08C09D7/12
CPCC08K2201/014C08L2205/025C08L2205/03C08L2205/035C09D5/084C09D5/086C09D7/63C09D7/70C09D129/14C09D163/00C09D163/04C08L63/00C08L75/04C08K13/06C08K9/06C08K2003/2296C08K7/24C08K7/26C08K5/17C08K5/378C08L29/14
Inventor 高延敏陆介平徐静杰
Owner DAQING CITY HUAYU PETROLEUM MASCH MFG CO LTD
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