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Drag-reducing wear-resistant paint for submarine gas transmission/condensate transmission pipelines

A technology for conveying pipelines and condensate, which is applied in the field of drag-reducing and wear-resistant coatings for submarine gas/condensate conveying pipelines, and can solve the problems of low shear strength, wear resistance, and poor solvent immersion resistance of coatings. , to achieve good drag reduction effect, excellent mechanical properties and good wear resistance.

Inactive Publication Date: 2010-04-28
SHANGHAI HILONG ANTI CORROSION TECH ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing drag-reducing coatings in pipelines are made of polymer resin and its curing agent, plus certain additives and pigments and fillers. The disadvantage is that the shear strength of the coating is low, only 5.4MPa, Moreover, the abrasion resistance and solvent immersion resistance are not good

Method used

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  • Drag-reducing wear-resistant paint for submarine gas transmission/condensate transmission pipelines
  • Drag-reducing wear-resistant paint for submarine gas transmission/condensate transmission pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Raw material ratio:

[0065] Primer A component is by mass percentage:

[0066] Epoxy resin: 25.00%

[0067] Leveling agent: 0.10%

[0068] Defoamer: 0.20%

[0069] Dispersant: 0.35%

[0070] Thickener: 1.00%

[0071] White ceramic powder: 10.00%

[0072] Bariatric Stone Dust: 17.00%

[0073] Iron oxide red: 15.00%

[0074]Mica iron oxide: 20.00%

[0075] Mixed solvent: 11.35%

[0076] Component B of the primer is by mass percentage:

[0077] Modified amine curing agent: 60.00%

[0078] Mixed solvent: 40.00%

[0079] A component: B component (weight ratio) = 5:1

[0080] Topcoat A component by mass percentage is:

[0081] Phenolic resin: 18.00%

[0082] Epoxy resin: 25.00%

[0083] Leveling agent: 0.10%

[0084] Defoamer: 0.20%

[0085] Dispersant: 0.50%

[0086] Thickener: 1.00%

[0087] White ceramic powder: 3.00%

[0088] Titanium dioxide: 5.00%

[0089] Chrome Oxide Green: 18.00%

[0090] Mica Iron Oxide: 15.00%

[0091] Mixed solvent: 7.2...

Embodiment 2

[0115] (1) Raw material ratio:

[0116] Raw material composition is by mass percentage:

[0117] Raw material composition is by mass percentage:

[0118] Primer A component:

[0119] Epoxy resin: 28.00%

[0120] Leveling agent: 0.10%

[0121] Defoamer: 0.20%

[0122] Dispersant: 0.35%

[0123] Thickener: 1.00%

[0124] White ceramic powder: 12.00%

[0125] Bariatric Stone Dust: 18.00%

[0126] Iron oxide red: 16.00%

[0127] Mica Iron Oxide: 15.00%

[0128] Mixed solvent: 9.35%

[0129] Primer B component:

[0130] Modified amine curing agent: 65.00%

[0131] Mixed solvent: 35.00%

[0132] A component: B component (weight ratio) = 5:1

[0133] Topcoat A component:

[0134] Phenolic resin: 20.00%

[0135] Epoxy resin: 22.00%

[0136] Leveling agent: 0.10%

[0137] Defoamer: 0.20%

[0138] Dispersant: 0.50%

[0139] Thickener: 1.00%

[0140] White ceramic powder: 5.00%

[0141] Titanium dioxide: 10.00%

[0142] Chrome Oxide Green: 12.00%

[0143] Mica iro...

Embodiment 3

[0153] (1) Raw material ratio:

[0154] Raw material composition is by mass percentage:

[0155] Primer A component:

[0156] Epoxy resin: 30.00%

[0157] Leveling agent: 0.10%

[0158] Defoamer: 0.20%

[0159] Dispersant: 0.35%

[0160] Thickener: 1.00%

[0161] White ceramic powder: 14.00%

[0162] Bariatric Stone Dust: 15.00%

[0163] Iron oxide red: 18.00%

[0164] Mica iron oxide: 17.00%

[0165] Mixed solvent: 4.35%

[0166] Primer B component:

[0167] Modified amine curing agent: 70.00%

[0168] Mixed solvent: 30.00%

[0169] A component: B component (weight ratio) = 5:1

[0170] Topcoat A component:

[0171] Phenolic resin: 23.00%

[0172] Epoxy resin: 20.00%

[0173] Leveling agent: 0.10%

[0174] Defoamer: 0.20%

[0175] Dispersant: 0.50%

[0176] Thickener: 1.00%

[0177] White ceramic powder: 8.00%

[0178] Titanium dioxide: 12.00%

[0179] Chrome Oxide Green: 15.00%

[0180] Mica iron oxide: 18.00%

[0181] Mixed solvent: 2.20%

[0182] Top...

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Abstract

The invention discloses wear-resistant paint in submarine gas transmission / condensate transmission pipelines. The paint comprises primer and topcoat both having double components, wherein a component A in the primer comprises epoxy resin, solvents, additives and pigment fillers; a component B in the primer comprises modified amine curing agents and mixed solvents; the component A in the topcoat comprise phenolic resin, epoxy resin, additives, pigment fillers and solvents; and the component B in the topcoat comprises modified phenol-aldehyde amine curing agents, modified amine curing agents and mixed solvents. The paint is characterized in that the paint has good adhesion, oil resistance and pressure resistance by adopting the phenolic resin combined with novel epoxy resin and adopting two types of modified amine in different molecular weight as curing agents, and is short in surface drying time, good in wear resistance and good in flexibility. The combination degree of the primer and the topcoat adopted by the paint greatly improves the corrosion resistance of coatings.

Description

technical field [0001] The invention relates to an internal drag-reducing coating, in particular to a drag-reducing and wear-resistant coating for a submarine gas transmission / condensate transmission pipeline. Background technique [0002] The transportation of oil and natural gas is mainly accomplished by pipelines, which have the advantages of safety and low cost, especially for the transportation of oil and natural gas under water or under the sea, which has the advantages of safety and low cost. Therefore, the study of internal drag-reducing coatings suitable for submarine oil and gas pipelines can reduce the surface roughness of the inner surface of submarine pipelines, reduce the resistance of transportation, increase the throughput, reduce costs, and protect the inner wall from medium corrosion. Prolonging the service life of steel pipes plays a very important role. [0003] The existing drag-reducing coatings in pipelines are made of polymer resin and its curing age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D161/06C09D7/12C09D5/00F16L58/10
Inventor 方军锋丁武斌李明张鹏珍
Owner SHANGHAI HILONG ANTI CORROSION TECH ENG
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