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Bilayer-structure anticorrosive coating

A technology of double-layer structure and anti-corrosion layer, applied in the direction of pipeline anti-corrosion/anti-rust protection, coating, damage protection, etc. low cost effect

Inactive Publication Date: 2018-01-09
江苏天时新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Due to the differences in materials and structures, different anti-corrosion pipelines have their own characteristics in terms of anti-corrosion performance, economy and use: the three-layer structure polyethylene anti-corrosion pipe has strong anti-corrosion performance and impact resistance, and has high safety requirements in oil fields. It has been applied to a certain extent in large-diameter and natural gas pipelines, but its cost is very high; two-layer structure polyethylene anti-corrosion technology is widely used in oil field injection pipelines, because it does not have the powder coating anti-corrosion of three-layer structure polyethylene anti-corrosion technology layer, once the outer sheath is damaged, the pipeline will corrode rapidly

Method used

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  • Bilayer-structure anticorrosive coating

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Embodiment Construction

[0008] Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described:

[0009] Such as figure 1 As shown, a kind of double-layer structure anticorrosion layer of the present invention comprises pipeline 1, modified asphalt anticorrosion layer 2 and polyethylene outer coating 3, and described pipeline 1 is modified asphalt anticorrosion layer 2 and polyethylene outer coating respectively from inside to outside. Vinyl exterior coating3. The modified bitumen anti-corrosion layer 2 has sufficient flexibility and can be bent on site. At the same time, it still has the greatest chemical resistance and cathodic disbondment resistance under the condition of thin film thickness, and has good coating film fluidity and solution viscosity. The role of the polyethylene outer coating 3 is to provide good impact resistance, low water permeability and good temperature resistance for the entire coating, in addition, its resistance to e...

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Abstract

The invention discloses a bilayer-structure anticorrosive coating. The bilayer-structure anticorrosive coating comprises a pipeline, a modified asphalt anticorrosive layer and a polyethylene outer coating. The pipeline comprises the modified asphalt anticorrosive layer and the polyethylene outer coating from inside to outside. The bilayer-structure anticorrosive coating is simple in structure andeasy to construct, has sufficient flexibility and can be bent on site. Compared with the anticorrosive coating of a traditional asphalt anticorrosive pipeline, the bilayer-structure anticorrosive coating is excellent in corrosion resistance, the polyethylene outer protective coating is tough, durable, resistant to heat, ageing, tension and compression and stable in product quality; the bilayer-structure anticorrosive coating is provided with the modified petroleum asphalt anticorrosive layer with excellent corrosion resistance and the polyethylene protective coating with the excellent protection effect and has the excellent dual protection effect. Compared with a bilayer-structure polyethylene anticorrosive pipeline, the cost is lower, and the anticorrosion cost is saved by about 15%.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a double-layer anticorrosion layer. technical background [0002] Due to the differences in materials and structures, different anti-corrosion pipelines have their own characteristics in terms of anti-corrosion performance, economy and use: the three-layer structure polyethylene anti-corrosion pipe has strong anti-corrosion performance and impact resistance, and has high safety requirements in oil fields. It has been applied to a certain extent in large-diameter and natural gas pipelines, but its cost is very high; two-layer structure polyethylene anti-corrosion technology is widely used in oil field injection pipelines, because it does not have the powder coating anti-corrosion of three-layer structure polyethylene anti-corrosion technology Once the outer sheath is damaged, the pipeline will corrode rapidly. The double-layer petroleum asphalt-polyethylene anticorrosion layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L58/10F16L58/12
Inventor 时伯建
Owner 江苏天时新材料科技有限公司
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