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High-temperature resistant, anti-sticking and anticorrosive thermoplastic coating for inner walls of metal pipelines and preparation method thereof

A technology for anti-corrosion coatings and high temperature resistance, applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., to achieve the effects of low friction coefficient, simple preparation method, and easy-to-control production process

Active Publication Date: 2013-07-10
吉林省奕彤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of anti-sticking, anti-corrosion and water resistance of the inner wall coating of metal pipes under high temperature conditions, the invention provides a thermoplastic high-temperature anti-sticking anti-corrosion coating for the inner wall of metal pipes and its preparation method

Method used

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  • High-temperature resistant, anti-sticking and anticorrosive thermoplastic coating for inner walls of metal pipelines and preparation method thereof
  • High-temperature resistant, anti-sticking and anticorrosive thermoplastic coating for inner walls of metal pipelines and preparation method thereof
  • High-temperature resistant, anti-sticking and anticorrosive thermoplastic coating for inner walls of metal pipelines and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 20 grams of thermoplastic polyethersulfone resin with a logarithmic inherent viscosity of 0.31, 12 grams of polyperfluoroethylene propylene micropowder, 8 grams of iron red pigment, 50 grams of N-methylpyrrolidone, 6 grams of methyl ethyl ketone, 20 grams of toluene, 4 grams After mixing with 1 g xylene, the mixture is stirred at a linear speed of 15 m / s for 15 minutes and then sanded for 2 hours to obtain a thermoplastic high temperature resistant anti-sticking and anti-corrosion coating for the inner wall of a metal pipe.

[0028] The inner wall of the metal pipe is coated with a thermoplastic high temperature resistant anti-stick and anti-corrosion coating to the inner wall of the metal pipe by air spraying.

[0029] The coating properties are as follows:

[0030]

Embodiment 2

[0032] 30 grams of thermoplastic polyethersulfone resin with a logarithmic inherent viscosity of 0.35, 12 grams of polytetrafluoroethylene micropowder, 1 gram of organic bentonite, 4 grams of iron black pigment, 1.4 grams of mica flakes, 1.4 grams of graphite, 20 grams of N-methyl pyrrolidone, 60 grams of N,N dimethylacetamide, 12 grams of methyl ethyl ketone, 60 grams of toluene and 0.2 grams of silicone leveling agent were mixed, stirred at a linear speed of 15 m / s for 15 minutes, and then sanded for 4 hours to obtain metal Thermoplastic high temperature resistant anti-stick and anti-corrosion coating for the inner wall of the pipeline.

[0033] The inner wall of the metal pipe is coated with a thermoplastic high temperature resistant anti-stick and anti-corrosion coating to the inner wall of the metal pipe by air spraying.

[0034] The coating properties are as follows:

[0035]

Embodiment 3

[0037] 40 grams of thermoplastic polyethersulfone resin with a logarithmic inherent viscosity of 0.37, 30 grams of tetrafluoroethylene-perfluorovinyl ether copolymer micropowder, 4 grams of fumed silica, 12 grams of titanium dioxide and 18 grams of iron blue pigment, 40 grams g of barium sulfate, 20 g of calcium carbonate whiskers, 24 g of N-methylpyrrolidone, 67 g of N,N dimethylformamide, 6 g of cyclohexanone, 15 g of methyl ethyl ketone, 2 g of toluene, 42 g of trimethylbenzene and 4 grams of silicone leveling agent was mixed, stirred at a linear speed of 15 m / s for 30 minutes, and then sanded for 6 hours to obtain a thermoplastic high temperature resistant anti-sticking and anti-corrosion coating for the inner wall of a metal pipe.

[0038] The inner wall of the metal pipe is coated with a thermoplastic high temperature resistant anti-stick and anti-corrosion coating to the inner wall of the metal pipe by air spraying.

[0039] The coating properties are as follows:

[00...

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Abstract

The invention provides a high-temperature resistant, anti-sticking and anticorrosive thermoplastic coating for inner walls of metal pipelines and a preparation method thereof, belonging to the technical field of coatings. The coating comprises thermoplastic polyether sulfone resins, high-temperature resistant fluororesins, thixotropic agents, anticorrosion pigments, functional fillers, a complex solvent and auxiliaries in a mass ratio of (10-20):(6-15):(0-2):(2-15):(0-30):(40-78):(0-2). The preparation method is characterized by mixing the thermoplastic polyether sulfone resins, high-temperature resistant fluororesins, thixotropic agents, functional fillers, anticorrosion pigments, complex solvents and auxiliaries and then stirring the mixture at a linear velocity of 15m / s for 15-30 minutes and then sanding the mixture for 2-6 hours. The coating provided by the invention has the characteristics that the coating has good adhesion with metal substrates, has usage temperature up to 260 DEG C, has low surface energy, is oleophobic and lyophobic, prevents contamination and scaling and has strong acid, alkali and corrosion resistance capacities and thin coat. The preparation method is simple, the production process is easy to control and the production equipment is easy to achieve.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a thermoplastic high-temperature-resistant, anti-sticking and anti-corrosion coating for the inner wall of a metal pipe and a preparation method thereof. Background technique [0002] The coating on the inner wall of the metal pipe not only protects the pipe body from abrasion by the conveying medium, but also reduces drag and improves the conveying efficiency. Therefore, the key point to be considered in the coating of the inner wall of metal pipes is to prevent sticking and anti-corrosion. At the same time, most of the medium transmission process is carried out at higher temperature, so high temperature resistance also needs to be considered. When choosing a coating with high temperature resistance, anti-sticking and anti-corrosion, the first thing to do is to analyze the conveying medium of the pipeline. [0003] Most of the metal pipes used in my country's petroleum industry are use...

Claims

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Application Information

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IPC IPC(8): C09D181/06C09D127/18C09D127/20C09D7/12C09D5/08C09D5/16
Inventor 关绍巍单华俊姜振华王贵宾
Owner 吉林省奕彤新材料有限公司
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