Anticorrosion hard film inhibiter for oil tube

A technology of corrosion inhibitor and hard coating, applied in the field of hard coating corrosion inhibitor and anti-corrosion hard coating corrosion inhibitor, to achieve the effects of easy removal, long salt spray resistance and lower production cost

Inactive Publication Date: 2012-10-31
和盛包装科技(海宁)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, solve the technical problem of temporary protection and corrosion prevention of oil pipes during storage and transportation, and provide a temporary protection material that has anti-corrosion effect and is easy to remove

Method used

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  • Anticorrosion hard film inhibiter for oil tube
  • Anticorrosion hard film inhibiter for oil tube
  • Anticorrosion hard film inhibiter for oil tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This tubing dural corrosion inhibitor is prepared according to the following composition ratio (mass percentage content):

[0022] Perchlorovinyl resin 1%,

[0023] Cyclohexanone 30%,

[0024] Xylene 40%,

[0025] P-phenylenediamine 27%,

[0026] Sodium tungstate 1%,

[0027] Imidazole derivatives 1%.

[0028] The preparation method of the present invention is as follows: directly add the above-mentioned substances into the reaction kettle to dissolve, stir uniformly, and pack; spray the hard film corrosion inhibitor directly on the surface of the tubing during construction and dry at room temperature.

[0029] The beneficial effects of this embodiment: the salt spray resistance time of the hard film corrosion inhibitor coated on N80 steel is 143 hours, the adhesion is level 3, and it is easy to remove.

Embodiment 2

[0031] This tubing dural corrosion inhibitor is prepared according to the following composition ratio (mass percentage content):

[0032] Perchlorovinyl resin 5%,

[0033] Cyclohexanone 30%,

[0034] Xylene 20%,

[0035] P-phenylenediamine 30%,

[0036] Sodium tungstate 5%,

[0037] Imidazoline derivatives 10%.

[0038] The preparation method is the same as in Example 1.

[0039] Effect: The salt spray resistance of the hard film corrosion inhibitor coated on N80 steel is 155 hours, the adhesion is level 1, and it is not easy to remove.

Embodiment 3

[0041] This tubing dural corrosion inhibitor is prepared according to the following composition ratio (mass percentage content):

[0042] Perchloroethylene resin 3%,

[0043] Cyclohexanone 30%,

[0044] Xylene 40%,

[0045] P-phenylenediamine 20%,

[0046] Sodium tungstate 2%,

[0047] Imidazoline derivatives 5%.

[0048] The preparation method is the same as in Example 1.

[0049] The effect of the embodiment: the salt spray resistance time of the hard film corrosion inhibitor coated on N80 steel is 145 hours, the adhesion is level 2, and it is easier to remove.

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Abstract

The invention discloses an anticorrosion hard film inhibitor for an oil tube. The anticorrosion hard film inhibitor comprises components by weight percentage as follows: 1 to 5% of perchloro-ethylene resin, 15 to 30% of cyclohexanone, 20 to 40% of dimethylbenzene, 5 to 30% of p-phenylenediamine, 1 to 5% of sodium tungstate, and 1 to 10% of imidazoline derivative. The anticorrosion hard film inhibitor has high anticorrosion performance on protecting the oil tube in storing and transporting; and the salt spray resistance can last for 150 hours to the maximum; the hard film inhibitor is easy to remove; and the anticorrosion hard film inhibitor is simple in manufacture technology, convenient for construction, and low in production cost.

Description

Technical field [0001] The invention belongs to the field of corrosion inhibitors, and relates to a hard film corrosion inhibitor, in particular to an anticorrosive hard film corrosion inhibitor for oil pipes. Background technique [0002] Tubing is an important material and equipment for oilfield construction. Generally, it is N80 steel. The steel contains a certain amount of Cr, and a passivation film is easily formed on the surface. If the tubing is not protected, it will be in the tubing. Pitting corrosion occurs during processing, storage and transportation. In order to ensure the quality of oil pipes, companies that produce oil pipes use anti-corrosion coatings to control corrosion under the existing technical conditions. However, after the tubing reaches the production and installation unit, the coating needs to be polished off and repainted, which brings inconvenience to production and increases production costs accordingly. Therefore, it is necessary to develop a mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/14
Inventor 高延敏贾宁宁吴新凯陶正章
Owner 和盛包装科技(海宁)股份有限公司
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