Epoxy resin coating in marine steel pipe 3PE anticorrosive coating and preparation method thereof

A technology of epoxy resin coating and anti-corrosion coating, which is applied in the field of coatings, can solve the problems of reducing the service life and safety of submarine steel pipes, and cannot prevent the immersion of small molecule corrosive media, so as to increase the impact resistance of seawater and improve physical and mechanical properties , the effect of reducing dosage

Inactive Publication Date: 2015-03-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, 3PP / 3PE pipeline anticorrosion coating is a commonly used pipeline anticorrosion solution, but there will be some holes and defects inside the coating, which cannot prevent the immersion of small molecule corrosive media, and cannot completely prevent corrosion. There are still many deficiencies in corrosion and electrochemical corrosion, which will greatly reduce the service life and safety of submarine steel pipes, improve the adhesion between coatings and steel pipes, and enhance the seawater stress corrosion resistance of coatings. focus

Method used

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  • Epoxy resin coating in marine steel pipe 3PE anticorrosive coating and preparation method thereof
  • Epoxy resin coating in marine steel pipe 3PE anticorrosive coating and preparation method thereof
  • Epoxy resin coating in marine steel pipe 3PE anticorrosive coating and preparation method thereof

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Effect test

Embodiment 1

[0032] The epoxy resin coating 30g in a kind of submarine steel pipe 3PE anticorrosion coating provided by the present invention, described epoxy resin anticorrosion coating is made up of following components by mass percentage:

[0033] Epoxy 60%

[0034] Pigments and fillers 29%

[0035] Auxiliary 11%.

[0036] The epoxy resin is composed of 40% (12g) of E-12 epoxy resin and 20% (6g) of novolac epoxy resin by mass percentage. The E-12 epoxy resin used in the present invention is a bisphenol A type epoxy resin, and its molecular structure determines that its cured product has high strength and bonding strength, and has good adhesion and corrosion resistance. Novolac epoxy resin has high phenyl content, short carbon chain, good heat resistance and rigidity, and the cured product has high crosslink density, good mechanical strength, good heat resistance, and effectively compensates for the poor weather resistance of E-12 epoxy resin lack of.

[0037] The pigments and filler...

Embodiment 2

[0051] The difference between embodiment 2 and embodiment 1 is: a kind of marine anticorrosion coating 50g of the present invention, described epoxy resin anticorrosion coating is made up of following components by mass percentage:

[0052] Epoxy 55%

[0053] Pigments and fillers 34.6%

[0054] Auxiliary 10.4%

[0055] Wherein the epoxy resin is composed of 39% (19.5g) of E-12 epoxy resin and 16% (8g) of novolak epoxy resin by mass percentage.

[0056] The pigments and fillers are composed of the following components by mass percentage:

[0057]

[0058]

[0059] The auxiliary agent consists of the following components by mass percentage

[0060]

[0061] The method for preparing the epoxy resin coating in the described submarine steel pipe 3PE anticorrosion coating of the present invention may further comprise the steps:

[0062] In step (1), the fineness of the grinding powder during grinding and dispersion in the sand mill is 20 μm.

[0063] In step (2), the m...

Embodiment 3

[0066] The difference between embodiment 3 and embodiment 1 is: a kind of marine anticorrosion coating 100g of the present invention, described epoxy resin anticorrosion coating is made up of following components by mass percentage:

[0067] Epoxy 57%

[0068] Pigment and filler 30%

[0069] Auxiliary 13%.

[0070] Wherein the epoxy resin is composed of E-12 epoxy resin 41% (41g) and novolac epoxy resin 16% (16g) by mass percentage.

[0071] The pigments and fillers are composed of the following components by mass percentage:

[0072]

[0073]

[0074] The auxiliary agent consists of the following components by mass percentage

[0075]

[0076] The method for preparing the epoxy resin coating in the described submarine steel pipe 3PE anticorrosion coating of the present invention may further comprise the steps:

[0077] In step (2), the modified nano-CaCO 3 , modified nano-TiO 2 , graphene, and nano-montmorillonite were mixed and ultrasonically treated to obtain...

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Abstract

The invention discloses an epoxy resin coating in a marine steel pipe 3PE anticorrosive coating and a preparation method thereof. The epoxy resin anticorrosive coating comprises the following components in percentage by weight: 55-65 percent of epoxy resin, 23.5-36 percent of filler and pigments and 10.4-15.3 percent of aids, wherein the epoxy resin comprises the following components in percentage by weight: 39-47 percent of E-12 epoxy resin and 16-23 percent of novolac epoxy resin. Talcum powder, mica powder, bentonite and titanium dioxide are properly added into the epoxy resin to serve as partial fillers. The use amount of the resin can be relatively reduced, the cost is reduced, the physical and mechanical properties can be improved; particularly, the elasticity modulus is increased, the cure shrinkage rate is reduced, the seawater impact resistance is increased, and the seawater resistance is improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an epoxy resin coating in a 3PE anti-corrosion coating of a submarine steel pipe and a preparation method thereof. Background technique [0002] With the continuous exploitation of onshore oil and natural gas resources, it is no longer able to fully meet the needs of human beings, and there are abundant oil and natural gas resources stored in the ocean. The competition for offshore oil and gas has become the focus of attention of all countries in today's society. Development usually uses large ships and pipelines for transportation, and submarine pipeline transportation has the outstanding advantages of high safety performance and low cost, and has been adopted by most countries in the world. my country started relatively late in offshore oil and gas exploration, development and oil and gas transportation. Domestic submarine oil and gas pipelines have a large gap with foreign pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D163/04C09D7/12C09D5/08
CPCC08K2003/2241C09D163/00C08L2205/02C08L2205/03C09D5/08C09D7/62C09D7/63
Inventor 姚正军周金堂李天明刘沛江其他发明人请求不公开姓名
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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