Method for spraying anticorrosive paint on inner surface of ship seawater pipeline

A technology for anti-corrosion coatings and seawater pipes, applied in anti-corrosion coatings, devices for coating liquid on surfaces, special surfaces, etc., can solve problems such as shortening the service life of coatings, discontinuous surfaces, and aggravating coating damage, and achieve uniformity and good dispersion effect

Active Publication Date: 2021-04-02
JILIN UNIV
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Problems solved by technology

However, due to the influence of seawater corrosion, microcracks are often hidden inside the coating
Once defects occur inside the coating, d

Method used

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  • Method for spraying anticorrosive paint on inner surface of ship seawater pipeline
  • Method for spraying anticorrosive paint on inner surface of ship seawater pipeline
  • Method for spraying anticorrosive paint on inner surface of ship seawater pipeline

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Example Embodiment

[0036] Example 1

[0037]First, the anti-corrosion coating powder is melted into liquid, and then sprayed to the inner surface of the seawater pipeline through spraying equipment; the anti-corrosion coating powder is obtained by mixing epoxy resin coating and self-healing microcapsules; the epoxy resin coating and self-healing The weight ratio of the microcapsules is 100:3; the self-healing microcapsules include a core material and a wall material wrapping the core material, the core material is tung oil, and the wall material is sodium alginate solution and calcium chloride Calcium alginate, the reaction product of the solution, is mixed with sodium alginate solution, tung oil and OP-10, and then placed in a tissue masher and stirred at a speed of 6000 r / min for 5 minutes to form oil-in-water emulsion droplets, which are obtained after standing for defoaming. Emulsion; drop the emulsion into the calcium chloride solution under the pressure of 0.43MPa, filter out the microcaps...

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Abstract

The invention provides a method for spraying anticorrosive paint on the inner surface of a ship seawater pipeline. Spraying equipment comprises a paint liquefying device, a high-pressure pump in pipeline communication with the paint liquefying device, a rail fixed through a supporting structure, two walking devices installed on the rail, a hose support and a hose, wherein one walking device is connected with the hose support through an L-shaped connecting rod, the other walking device is provided with a laser curing device, and the laser curing device is located at the circle center of the hose support; one end of the hose is connected to an outlet of the high-pressure pump, the middle of the hose penetrates through a through hole of a connecting block fixedly connected to the bottom of the rail, and the other end of the hose penetrates through a through hole of the hose support and is wound around the outer circumferential surface of the hose support; threaded holes are formed in thepipe wall of the end, located on the outer circumferential surface of the hose support, of the hose; the interior of each threaded hole is connected with a funnel-shaped spraying nozzle; and threads are arranged on the outer surfaces of round pipes at the lower ends of the spraying nozzles. The coating flowing phenomenon caused by non-uniform coating is avoided, so that the purpose of optimizing the spraying effect is achieved.

Description

technical field [0001] The invention belongs to the field of coatings and coating equipment, and in particular relates to a method for spraying anti-corrosion coatings on the inner surface of naval seawater pipelines. Background technique [0002] Coatings with anti-corrosion, waterproof and protective functions are very necessary materials in engineering construction. Especially for the protection of pipelines such as underground, road and bridge, tunnel engineering, and ship seawater pipelines, a protective layer needs to be coated and it is hoped that it will be cured soon. [0003] At present, the construction methods of coatings include various methods such as brush coating, spray coating, roller coating and curtain coating. The brushing method is the most widely used brushing method in construction at present. It is simple in construction and easy to operate, but it requires pure manual operation during construction, which is labor-intensive, does great harm to worker...

Claims

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Application Information

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IPC IPC(8): B05D5/00B05D7/22B05D7/24B05D3/06B05B16/20B05B9/04B05B13/06C09D163/02C09D5/08C09D7/65
CPCB05B9/0423B05B13/0627B05D3/06B05D5/00B05D7/225B05D7/24B05D2504/00B05B16/20C09D5/08C09D163/00C09D7/65C09D7/70C08L5/04C08L91/005
Inventor 孙霁宇李雯湛玉超田丽梅赵杰
Owner JILIN UNIV
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