Method for preparing anticorrosive paint for surface of ocean oil well pipe and coating treatment method of anticorrosive paint on pipe surface

A technology for anti-corrosion coatings and oil well pipes, used in anti-corrosion coatings, devices for coating liquids on surfaces, special surfaces, etc.

Active Publication Date: 2011-06-29
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both corrosion inhibitors and cathodic protection systems need to be tested and monitored, especially in deep water areas where it is difficult and requires a lot of manpower and material resources

Method used

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  • Method for preparing anticorrosive paint for surface of ocean oil well pipe and coating treatment method of anticorrosive paint on pipe surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] In this embodiment, the preparation process and coating process are as follows:

[0043] A. Coating preparation process

[0044] (one). Raw material formulations for design coatings

[0045] (1) The dosage of the main raw material coating matrix:

[0046] Epoxy resin 100 grams;

[0047] Take epoxy resin as 100% as the measurement basis, and add other raw materials:

[0048] Plasticizer triphenyl phosphate 20 grams,

[0049] Curing agent ethylenediamine or / and polyamide 12 grams,

[0050] Solvent dibutyl phthalate 20 grams;

[0051] (2) Addition amount of auxiliary raw material additives:

[0052] Take the above epoxy resin as 100% as the benchmark, and add other raw material additives:

[0053] Methyl isobutyl ketone 10 grams,

[0054] Xylene 5 grams,

[0055] Butyl synthetic rubber 4 grams,

[0056] Silicone resin 7 grams,

[0057]Ketimine 20 grams,

[0058] Zinc powder 30 grams,

[0059] Glass powder (120 mesh) 10 grams,

[0060] Chromium powder 10 gra...

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Abstract

The invention relates to a method for preparing an anticorrosive paint for the surface of an ocean oil well pipe and a coating treatment method of the anticorrosive paint on a pipe surface and belongs to the technical field of steel pipe anticorrosive surface treatment. Epoxy resin serves as a paint substrate, and various additives are added into the epoxy resin to optimize the corrosion resistance of the paint. At the same time, the comprehensive mechanical performance of the epoxy resin is enhanced, namely the wear resistance, heat resistance, rigidity, strength and the like are further improved through the additives. A potential-capacitance test and a Mott-Schottky analysis on the oil well pipe subjected to coating treatment show that carrier density on the pipe surface is much less than that of the pipe surface which is not subjected to coating treatment; and in a weightlessness test, the weightlessness of the oil well pipe subjected to the coating treatment is the minimum. Therefore, the oil well pipe subjected to the treatment has high corrosion resistance.

Description

technical field [0001] The invention relates to a method for preparing a coating on the surface of an offshore oil well pipe and a method for coating and treating the pipe surface, and belongs to the technical field of anti-corrosion surface treatment of steel pipes. Background technique [0002] According to the World Energy Outlook released by the International Energy Agency, the world's oil demand is expected to grow at an average annual rate of 1.6%, reaching 5.769 billion tons in 2030; the demand for natural gas will grow at an average annual rate of 2.4%, reaching 4.203 billion tons of oil equivalent in 2030. The crisis of onshore oil resources has become increasingly prominent. In order to meet the oil and gas demand of 9.972 billion tons of oil equivalent in 2030, it is urgent to find replacement areas for oil and gas reserves. important role in economic development. The world's offshore oil resources account for 34% of the world's total oil resources. The total res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D123/22C09D183/04C09D7/12C09D5/10F16L58/10B05D5/08B05D1/02B05D3/00B05D3/02B05D3/10B05D3/12
Inventor 钟庆东李振华盛敏奇林海周琼宇
Owner SHANGHAI UNIV
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