Oxidation-resistant corrosion-resistant additive for preparing protective paint for underground metallic pipeline

A technology for protective coatings and metal pipes, applied in anti-corrosion coatings and other directions, can solve the problems of easy oxidation and corrosion, shorten service life, surface rust, etc., achieve excellent oxidation resistance and corrosion resistance, prolong service life, and enhance resistance to corrosion. The effect of oxidation and corrosion resistance

Inactive Publication Date: 2017-05-31
ANHUI ZHENXIN PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal pipes have excellent impact resistance and torsional strength, and are not easily deformed. However, they are easily oxidized and corroded after being buried underground for a long time, and the surface is seriously rusted, which shortens its service life.

Method used

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  • Oxidation-resistant corrosion-resistant additive for preparing protective paint for underground metallic pipeline
  • Oxidation-resistant corrosion-resistant additive for preparing protective paint for underground metallic pipeline
  • Oxidation-resistant corrosion-resistant additive for preparing protective paint for underground metallic pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 3 parts of polyvinyl chloride paste resin and 3 parts of ethylene-vinyl acetate copolymer to 20 parts of PTFE superfine powder, and heat up to 130-135 ° C at a heating rate of 5 ° C / min and mix for 20 min , then add 1 part of vulcanized lard, 0.5 part of glass fiber powder and 0.3 part of nano-zinc oxide, continue to mix at 130-135 ° C for 10 minutes, and then naturally cool to room temperature to obtain material I;

[0025] (2) Add 3 parts of polyethylene terephthalate and 2 parts of rubber powder to 5 parts of rosin-modified phenolic resin, heat up to 100-105 °C at a heating rate of 5 °C / min and mix for 15 minutes, then add 0.5 parts of sepiolite fibers and 0.2 parts of N-methylpyrrolidone, continue to heat up to 125-130°C at a heating rate of 5°C / min and mix for 15 minutes, then naturally cool to room temperature to obtain material II;

[0026] (3) Add material II, 1 part of polydimethyldiallyl ammonium chloride, 0.3 part of ferrous sulfate and 0.2 part of ...

Embodiment 2

[0031] (1) Add 3 parts of polyvinyl chloride paste resin and 2 parts of ethylene-vinyl acetate copolymer to 20 parts of PTFE superfine powder, and heat up to 130-135 °C at a heating rate of 5 °C / min and mix for 20 minutes , then add 1 part of vulcanized lard, 0.5 part of glass fiber powder and 0.5 part of nano-zinc oxide, continue to mix at 130-135 ° C for 10 minutes, and then naturally cool to room temperature to obtain material I;

[0032] (2) Add 3 parts of polyethylene terephthalate and 2 parts of rubber powder to 8 parts of rosin-modified phenolic resin, heat up to 100-105°C at a heating rate of 5°C / min and mix for 15 minutes, then add 0.5 parts of sepiolite fibers and 0.3 parts of N-methylpyrrolidone, continue to heat up to 125-130°C at a heating rate of 5°C / min and mix for 15 minutes, then naturally cool to room temperature to obtain material II;

[0033] (3) Add material II, 1 part of polydimethyldiallylammonium chloride, 0.5 part of ferrous sulfate and 0.3 part of 1-b...

Embodiment 3

[0038] Add the anti-oxidation and anti-corrosion additives prepared in Example 1 and Example 2 into the raw materials for the preparation of conventional metal pipeline protective coatings according to a certain proportion, and after fully mixing, powder coatings are obtained. The specific raw material composition and proportioning ratio are shown in Table 1. The prepared powder coating was sprayed on the metal pipe, and the anti-oxidation and anti-corrosion performance tests were carried out on the formed coating, and a blank control without adding anti-oxidation and anti-corrosion additives was set. The results are shown in Table 2.

[0039] Table 1 Preparation raw materials and proportions of protective coatings for metal pipelines

[0040]

[0041]

[0042] Table 2 coating oxidation resistance and corrosion resistance test results

[0043]

[0044] Ozone oxidation resistance test conditions: Ozone concentration in the ozone corrosion chamber is 500ppm, temperature...

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Abstract

The invention discloses an oxidation-resistant corrosion-resistant additive for preparing protective paint for an underground metallic pipeline, and relates to the technical field of paint for pipelines. The oxidation-resistant corrosion-resistant additive is prepared from the following raw materials in parts by weight: 15 to 20 parts of polytetrafluoroethylene ultrafine powder, 5 to 10 parts of rosin modified phenolic resin, 3 to 6 parts of polyvinyl chloride paste resin, 3 to 6 parts of polyethylene glycol terephthalate, 2 to 4 parts of ethylene-vinyl acetate copolymer, 2 to 4 parts of rubber powder, 1 to 2 parts of polydimethyldiallyl ammonium chloride, 1 to 2 parts of vulcanized lard, 0.5 to 1 part of sepiolite fiber, 0.5 to 1 part of glass fiber powder, 0.3 to 0.5 part of ferrous sulfate, 0.3 to 0.5 part of nano zinc oxide, 0.1 to 0.3 part of N-methyl pyrrolidone and 0.1 to 0.3 part of 1-butyl-3-methylimidazolium dicyanamide. By using the additive provided by the invention, a coating formed by the paint can be enabled to have excellent oxidation resistance and corrosion resistance; the erosion of soil and air to a metallic pipeline is retarded; the rusting speed of the surface of the metallic pipeline is slowed down.

Description

[0001] Technical field: [0002] The invention relates to the technical field of pipeline coatings, in particular to an anti-oxidation and anti-corrosion additive for preparing protective coatings for underground metal pipelines. [0003] Background technique: [0004] The use of metal pipes has a long history, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipelines. Metal pipes have excellent impact resistance and torsional strength, and are not easily deformed. However, they are easily oxidized and corroded after being buried underground for a long time, and the surface is seriously rusted, which shortens its service life. In order to solve this problem, people spray protective coatings with good anti-oxidation and corrosion resistance on the surface of metal pipes to form a protective coating on the surface of metal pipes to slow down the erosion of metal pipes by soil and air. In order to save the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08
Inventor 吴彬彬
Owner ANHUI ZHENXIN PAINT
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