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High-temperature wear-resistant heavy-duty anticorrosion powder coating, and preparation method and coating method thereof

A high-temperature wear-resistant powder coating technology, which is applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of non-environmental protection and intolerance of wear-resistant coatings, achieve low cost, reduce friction coefficient, and reduce oil wells Effect of maintenance and repair costs

Pending Publication Date: 2021-12-31
北京天乙长科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a high-temperature wear-resistant and heavy-duty anti-corrosion powder coating and its preparation method and coating method to solve the problems in the prior art that the wear-resistant coating is not environmentally friendly and cannot withstand hydrogen sulfide and carbon dioxide corrosion under high temperature and high pressure

Method used

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  • High-temperature wear-resistant heavy-duty anticorrosion powder coating, and preparation method and coating method thereof
  • High-temperature wear-resistant heavy-duty anticorrosion powder coating, and preparation method and coating method thereof
  • High-temperature wear-resistant heavy-duty anticorrosion powder coating, and preparation method and coating method thereof

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preparation example Construction

[0044] In another typical embodiment of the present application, a method for preparing high temperature wear resistant anti-corrosion powder coatings is provided. The preparation method includes weighing each component in accordance with the composition of the high temperature wear resistant to prevent the powder coating; prefix the components to obtain a premix; mix the premix, extrud out, table, to obtain a molded product The molded article was pulverized to obtain a high temperature wear resistant anti-corrosion powder coating.

[0045] During the preparation of high temperature wear resistant anti-corrosion powder coatings, there is no need to use water or organic solvent, which is fully compliant; in addition, the steps in the above process are the steps that can be achieved in the prior art conventional operation, so it is easy to Uploaded, the obtained high temperature wear resistant anti-corrosion powder coating is solid coating, not only high wear resistance, but also ma...

Embodiment 1

[0050] Example 1 The high temperature wear resistant anti-corrosion powder coating comprises: a mass content of phenol carhyde epoxy resin (epoxy equivalent 270) is 50 parts, 3.9 parts of dicyandiamide (equivalent ratio of dicyandide and phenol carhyde epoxy resin) 1.0), polytetrafluoroethylene fine powder (particle size is less than 5 μm, droplet point is greater than 300 ° C), nano zirconium oxide (particle diameter is less than 200 nm), 6 parts of molymide (particle size at 325 to 1250) Room), 0.3 parts of dimethylimidazole, 1.5 parts of polyacrylate, 27.3 parts of titanium powder, quartz powder and carbon black (between 600 to 1250).

[0051] According to the above-mentioned ratio, the material weighing is applied to the high speed premixer, and the mixture is mixed at room temperature at room temperature at room temperature at room temperature, and the extruder is fed into the extruder by the feed pipe. Out, the extruder temperature control: the mixed zone temperature is 75 °...

Embodiment 2

[0053] In this example, the present invention is substantially the same, and the components of high temperature wear-resistant anti-corrosion powder coating include: phenol carhyde epoxy resin (epoxy equivalents of 240), 4.2 parts of dicyandiamide (double The equivalent ratio of the cyanide and phenol carhyde epoxy resin is 0.8), and the polytetrafluoroethylene fine powder (less than 5 μm having a particle size is greater than 150 ° C), and the nano-zirconia (particle diameter is less than 200 nm) 6 parts, diulfide molybdenum (6 parts of the particle size between 325 to 1250), 0.3 parts of dimethylimidazole, 1 polyacrylate, titanium white powder and quartz powder (between 600 to 1250 mesh).

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Abstract

The invention provides a high-temperature wear-resistant heavy-duty anticorrosion powder coating, and a preparation method and a coating method thereof. The high-temperature wear-resistant heavy-duty powder coating comprises, by mass, 50-65 parts of phenolic modified epoxy resin, 3-9 parts of a curing agent, 3-5 parts of an organic wear-resistant filler, 5-10 parts of an inorganic wear-resistant filler, 3-7 parts of a solid wear-resistant lubricant, 15-30 parts of a pigment filler, 0.2-0.5 part of a curing accelerator and 0.8-1.5 parts of a leveling agent. The components of the high-temperature wear-resistant powder coating are all commercially available materials, are simple and easy to obtain, and are low in cost; and the phenolic aldehyde modified epoxy resin with high strength, heat resistance and acid and alkali resistance is adopted as a main film-forming matter, the long-acting corrosion resistance can still be kept in the harsh H2S / CO2 corrosion environment, and a high-temperature wear-resistant anticorrosion coating layer can be obtained through the high-temperature wear-resistant heavy-duty anticorrosion powder coating.

Description

Technical field [0001] The present invention relates to the field of corrosion resistance materials, and Background technique [0002] During the oilfield oil production, there is a need for a large number of oil well pipes and penetrating machines, oil well pipes and extract rods in the oil well tube, and inevitably generate friction, while the corrosion environment is mainly encapsulated. The complex medium, the corrosion type is mainly hydrogen sulfide, carbon dioxide, dissolved oxygen and sulfate resection SRB, etc. How to improve the corrosion resistance and wear resistance of oil well pipes and oil rods is the key technical issues facing the current oil and gas drill, but because of the harsh corrosion, the general organic coat is difficult to achieve its wear and corrosive protection. Require. [0003] At present, the wear-resistant oil well pipe used in oil field is a tungsten-based alloy coating oil well pipe. Most of the stripping rods are glass steel absorbent rods or ...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D5/03C09D5/08C09D7/61C09D7/65B05D1/06
CPCC09D163/04C09D5/03C09D5/08C09D7/61C09D7/65B05D1/06C08K2003/2244C08K2003/2213C08K2003/3009C08K2201/011C08L2201/08C08L27/18C08K3/22C08K3/30C08K5/20C08K13/02C08L23/12
Inventor 赖广森黄元斌何斌斌
Owner 北京天乙长科技发展有限公司
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