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A preparation method of fluorocarbon-modified heat-conducting heavy-duty anti-corrosion coating suitable for heating crude oil containing water

A fluorocarbon modification, heavy-duty anti-corrosion technology, applied in the field of metal anti-corrosion, can solve the problems of poor metal surface adhesion, inability to soak, poor anti-corrosion performance, etc., achieve good oil and water resistance, improve oil and water resistance, and excellent thermal conductivity. performance effect

Active Publication Date: 2019-08-06
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of traditional heavy-duty anti-corrosion coatings such as poor corrosion resistance, poor oil and water resistance, and poor thermal conductivity in aqueous crude oil, as well as the high price of fluorocarbon resin coatings, poor adhesion on metal surfaces, and high temperature resistance. Poor performance, can not be soaked in water-containing crude oil at 80°C for a long time

Method used

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  • A preparation method of fluorocarbon-modified heat-conducting heavy-duty anti-corrosion coating suitable for heating crude oil containing water
  • A preparation method of fluorocarbon-modified heat-conducting heavy-duty anti-corrosion coating suitable for heating crude oil containing water
  • A preparation method of fluorocarbon-modified heat-conducting heavy-duty anti-corrosion coating suitable for heating crude oil containing water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Epoxy resin E44, n-butanol, xylene (mixture of three isomers), graphite powder, hexagonal boron nitride, 6006 leveling agent in the ratio of 58:35:85:20:20:1 (mass Than) mixing with a three-roll machine and grinding until the slurry fineness is below 20 μm (measured by a scraper fineness meter), and then filtering with a 120-mesh filter cloth to obtain component A. Mix and stir 651 polyamide resin, n-butanol, xylene (a mixture of three isomers), and fluorocarbon imidazoline quaternary ammonium salt in a ratio (mass ratio) of 20.4:13.6:33:10 to obtain B components. Mix component A and component B at a ratio (mass ratio) of 3:1, stir evenly, and cure at room temperature for 15 to 20 minutes to obtain the fluorocarbon modified thermally conductive heavy-duty anti-corrosion coating. Spray the paint on the surface of the tinplate test plate and 20# steel pipe for 3 times, and measure the adhesion of the paint film with the QFZ paint film adhesion tester (Tianjin Jingke Mate...

Embodiment 2

[0020] Epoxy resin E44, n-butanol, xylene (mixture of three isomers), graphite powder, hexagonal boron nitride, 6006 leveling agent in the ratio of 58:36:86:21:21:1.1 (mass Than) mixing with a three-roll machine and grinding until the slurry fineness is below 20 μm (measured by a scraper fineness meter), and then filtering with a 120-mesh filter cloth to obtain component A. Mix and stir 651 polyamide resin, n-butanol, xylene (a mixture of three isomers), and fluorocarbon imidazoline quaternary ammonium salt in a ratio (mass ratio) of 22.6:14.5:34.6:15 to obtain B components. Mix component A and component B at a ratio (mass ratio) of 3:1, stir evenly, and cure at room temperature for 15 to 20 minutes to obtain the fluorocarbon modified thermally conductive heavy-duty anti-corrosion coating. Spray the paint on the surface of the tinplate test plate and 20# steel pipe for 3 times, and measure the adhesion of the paint film with the QFZ paint film adhesion tester (Tianjin Jingke ...

Embodiment 3

[0022] With epoxy resin E44, n-butanol, xylene (mixture of three isomers), graphite powder, hexagonal boron nitride, 6006 leveling agent in the ratio of 58:37:87:22:22:1.2 (mass Than) mixing with a three-roll machine and grinding until the slurry fineness is below 20 μm (measured by a scraper fineness meter), and then filtering with a 120-mesh filter cloth to obtain component A. Mix and stir 651 polyamide resin, n-butanol, xylene (a mixture of three isomers), and fluorocarbon imidazoline quaternary ammonium salt in a ratio (mass ratio) of 23.4:15.2:36:20 to obtain B components. Mix component A and component B at a ratio (mass ratio) of 3:1, stir evenly, and cure at room temperature for 15 to 20 minutes to obtain the fluorocarbon modified thermally conductive heavy-duty anti-corrosion coating. Spray this paint on the surface of the tinplate test plate 3 times. After the paint film is dry, use the QFZ paint film adhesion tester (Tianjin Jingke Material Testing Machine Factory)...

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Abstract

The invention relates to a preparation method for a perfluorocarbon modified heat-conduction heavy anti-corrosion coating suitable for heating water-containing crude oil. The preparation method comprises the following steps: mixing epoxy resin, n-butanol, dimethylbenzene, graphite powder, hexagonal boron nitride and a leveling agent according to the mass ratio of 58: 35-39: 85-90: 20-25: 20-25: 1-1.5 to obtain a component A; uniformly mixing and stirring polyamide resin, the n-butanol, the dimethylbenzene and perfluorocarbon imidazoline quaternary-ammonium salt according to the mass ratio of 20-25: 13-18: 33-38: 10-30 to obtain a component B; and mixing the component A and the component B according to a mass ratio of 3: 1, stirring uniformly, and curing for 15-20 minutes at the normal temperature to obtain the perfluorocarbon modified heat-conduction heavy anti-corrosion coating. The coating has good oil-proof and water-proof properties and excellent anti-corrosion property and heat-conduction property, meanwhile has low cost and high adhesive force, and can be used for preventing corrosion of an outer layer of a metal pipe for heating the water-containing crude oil for a long time.

Description

technical field [0001] The invention relates to a preparation method of a heavy-duty anti-corrosion coating, which is mainly used for anti-corrosion of metal pipelines heated by water-containing crude oil, and has better thermal conductivity. The invention belongs to the technical field of metal anticorrosion. Background technique [0002] Oil well production fluid (hydrous crude oil) contains a large amount of water. During oil-water separation, it is necessary to heat the water-containing crude oil with a heating coil in the settling tank (or purification tank). Generally, 0.4MPa steam is passed through the pipe, and the water-containing crude oil is outside the pipe. The heating coil is made of metal material, and the outer wall of the coil is brushed or sprayed with anti-corrosion paint. The investigation found that the corrosion of the heating coil by the water-containing crude oil is very serious, and frequent perforation requires production to be stopped to repair l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C08G59/50
CPCC08G59/5073C08K3/04C08K2003/385C09D5/08C09D163/00
Inventor 陈晓东陈君黄瑾侯雯雯杨源波任蕊
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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