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Surface hydrophobic treatment method of deepsea oil extraction metal member

A composite coating and total mass technology, applied to special surfaces, devices for coating liquids on surfaces, coatings, etc., can solve problems such as unreported, and achieve the effects of improving transportation efficiency, reducing losses, and excellent corrosion resistance.

Inactive Publication Date: 2017-08-18
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nano-silica modified fluorine-containing acrylic resin has been reported, there are no patents or papers on the preparation of nano-oxide / fluorine-containing acrylic resin composite coatings with hierarchical structure through oxide powders of different particle sizes. to report

Method used

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  • Surface hydrophobic treatment method of deepsea oil extraction metal member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 Fluorine-containing acrylic resin coating:

[0025] The monomers (including methyl methacrylate, butyl acrylate, β-hydroxypropyl methacrylate, dodecafluoroheptyl acrylate) and the initiator benzoyl peroxide (addition amount of 1 0.8% of the total body mass) was dissolved in a mixed solvent of xylene and butyl acetate, and added dropwise to the reactor, and the reaction temperature was 120-140°C. After the dropwise addition, continue to keep warm for 160 minutes to make the reaction complete, and obtain the fluorine-containing acrylic resin coating.

Embodiment 2

[0027] Weigh 30g of ZnO powder with particle diameters of 30-80nm and 300-1000nm in total, ultrasonically disperse for 0.5h, and then add silane coupling agent KH550 to modify the ZnO powder; add the ZnO powder modified by KH550 to In 957.6 g of the fluorine-containing acrylic resin paint prepared in Example 1, it was dispersed uniformly. Among them, the added amount of ZnO powder with a particle size of 30-80 nm is 18 g, and the added amount of ZnO powder with a particle size of 300-1000 nm is 12 g.

[0028] Add 212.4 g of additives to the above mixture, stir evenly, and then spray it on the surface of the metal member, and solidify at 200-230°C to form a film with a coating thickness of 200 μm.

[0029] The above-mentioned auxiliary agents include curing agent 156g, defoamer 2.4g, leveling agent 6g and film-forming auxiliary agent 48g. Among them, the curing agent includes one or more of isocyanate, amino resin, and epoxy resin; the defoamer is a silicone defoamer; the leve...

Embodiment 3

[0032] Weigh TiO with a particle size of 30nm and 500nm 2 , SnO 2 A total of 80g of powder was dispersed ultrasonically for 0.5h, and then the silane coupling agent KH550 was added to modify the powder; the TiO modified by KH550 2 and SnO 2 The powder was added to 743 g of the fluorine-containing acrylic resin coating prepared in Example 1 to make it uniformly dispersed. Among them, TiO with a particle size of 30nm 2 and SnO 2 The amount of powder added is 40g in total, TiO with a particle size of 500nm 2 and SnO 2 The addition amount of powder is 40g altogether.

[0033] Add 125g of amino resin curing agent, 2g of BYK-141 defoamer, 5g of acrylic acid leveling agent, and 45g of propylene glycol ethyl ether to the above mixture, stir evenly, spray on the surface of the metal member, and cure at 200-230°C to form a film. The thickness is 100 μm.

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Abstract

The invention relates to a surface hydrophobic treatment method of a deepsea oil extraction metal member, and particularly relates to a composite coating and applications thereof. A fluorine-containing acrylic acid resin coating is prepared by adopting a solution polymerization method, and the regulation and optimization on the hydrophobicity of the coating can be realized by adding oxide powder into the coating as filler particles. By adopting oxide powder of two sizes, evenly dispersing a silane coupling agent into the fluorine-containing acrylic acid resin coating and forming a multistage roughness structure after being cured, the hydrophobicity of the coating can be greatly enhanced. The oxide particles / the fluorine-containing acrylic acid resin coating is evenly coated on the surface of a metal member, so that the adhesive power of a hydrate can be effectively reduced, the frictional resistance can be decreased, and the corrosion resistance of the metal member can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment, in particular to a method for surface hydrophobic treatment of deep-sea oil production metal components. Background technique [0002] In the deep sea, with the transportation of oil and natural gas in pipelines, methane hydrates will gradually adhere to the surface of metal components and block the flow of oil and gas. Therefore, one of the key issues in oil and gas transportation is to avoid the accumulation of methane hydrates to ensure the flow of pipelines . Conventional methods currently used mainly use heating systems and chemical additives, both of which require expensive inputs. In addition, although additives such as methanol can well inhibit the formation of hydrates, if leakage occurs, it will cause great damage to the environment. Researchers such as Aman, Anklam, and McCulfor have proved through experiments and theory that the main adhesion force for hydrate par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/12C09D5/08B05D5/08
CPCC09D133/00B05D5/083C08K3/22C08K3/36C08K9/06C08K2003/2227C08K2003/2231C08K2003/2241C08K2003/2296C08K2201/011C09D5/08C09D7/62C09D7/68
Inventor 陈舒恬王珏王章忠张保森巴志新
Owner NANJING INST OF TECH
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