Anti-drag and abrasion-resistant paint for natural gas line

A technology of natural gas pipelines and wear-resistant coatings, applied in epoxy resin coatings, coatings, etc., can solve the problems of insufficient friction coefficient of the coating surface, poor wear resistance, poor resistance to solvent immersion, etc., and achieve good drag reduction effect, easy construction in winter, and good salt spray resistance

Active 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 for pipelines are made of polymer resin and its curing agent, plus certain additives and pigments and fillers. The disadvantages are that the surface friction coefficient of the coating is not low enough, and the wear resistance, Poor resistance to solvent immersion

Method used

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  • Anti-drag and abrasion-resistant paint for natural gas line
  • Anti-drag and abrasion-resistant paint for natural gas line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Raw material ratio:

[0048] The composition of raw materials by mass percentage is:

[0049] Ingredient A:

[0050] Phenalkamine curing agent: 27%;

[0051] Leveling agent: 0.15%;

[0052] Defoamer: 0.17%;

[0053] Dispersant: 0.55%;

[0054] Thickener: 4.0%;

[0055] White ceramic powder: 5.5%;

[0056] Iron oxide red powder: 15%;

[0057] Mica iron oxide: 12%;

[0058] Iron oxide yellow powder: 3.5%;

[0059] Light calcium carbonate: 4.0%;

[0060] Environmentally friendly mixed solvent: 28.13%.

[0061] Ingredient B:

[0062] Epoxy resin: 57%;

[0063] Leveling agent: 1.6%;

[0064] Environmentally friendly mixed solvent: 41.4%.

[0065] When the paint is used, component A and component B are used together in a mass ratio of A:B=1.35:1.

[0066] The epoxy resin is provided by Baling Petrochemical Epoxy Resin Factory or Shenzhen Jiadida Chemical Co., Ltd.;

[0067] The phenalkamine curing agent is provided by Shanghai Hongke Chemical Co., Ltd.;

...

Embodiment 2

[0087] (1) Raw material ratio:

[0088] The composition of raw materials by mass percentage is:

[0089] Ingredient A:

[0090] Phenalkamine curing agent: 31%;

[0091] Leveling agent: 0.22%;

[0092] Defoamer: 0.20%;

[0093] Dispersant: 0.7%;

[0094] Thickener: 3.3%;

[0095] White ceramic powder: 4.0%;

[0096] Iron oxide red powder: 15%;

[0097] Mica iron oxide: 8%;

[0098] Iron oxide yellow powder: 4.5%;

[0099] Light calcium carbonate: 6.0%;

[0100] Environmentally friendly mixed solvent: 27.08%.

[0101] Ingredient B:

[0102] Epoxy resin: 60%;

[0103] Leveling agent: 1.8%;

[0104] Environmentally friendly mixed solvent: 38.2%.

[0105] When the paint is used, component A and component B are used together in a mass ratio of A:B=1.35:1.

[0106] (2) Preparation method

[0107] The preparation method is the same as in Example 1.

Embodiment 3

[0109] (1) Raw material ratio:

[0110] The composition of raw materials by mass percentage is:

[0111] Ingredient A:

[0112] Phenalkamine curing agent: 34%;

[0113] Leveling agent: 0.25%;

[0114] Defoamer: 0.22%;

[0115] Dispersant: 0.9%;

[0116] Thickener: 3.0%;

[0117] White ceramic powder: 5.0%;

[0118] Iron oxide red powder: 16%;

[0119] Mica iron oxide: 6%;

[0120] Iron oxide yellow powder: 4%;

[0121] Light calcium carbonate: 5.0%;

[0122] Environmentally friendly mixed solvent: 25.63%.

[0123] Ingredient B:

[0124] Epoxy resin: 63%;

[0125] Leveling agent: 2.0%;

[0126] Environmentally friendly mixed solvent: 35%.

[0127] When the paint is used, component A and component B are used together in a mass ratio of A:B=1.35:1.

[0128] (2) Preparation method

[0129] The preparation method is the same as in Example 1.

[0130] The characteristics of a natural gas pipeline drag-reducing and wear-resistant coating of the present invention are:...

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Abstract

The invention discloses an anti-drag and abrasion-resistant paint for a natural gas line. Raw materials of the paint comprise two components A and B, wherein the component A comprises a phenolic aldehyde amine curing agent, a flatting agent, a defoaming agent, a dispersant, a thickening agent, white ceramic powder, red ferric oxide powder, mica ferric oxide, yellow iron oxide powder, light calcium carbonate and an environmentally-friendly mixed solvent; and the component B comprises epoxy resin, the flatting agent and the environmentally-friendly mixed solvent. The anti-drag and abrasion-resistant paint has the following advantages that: 1, compared with the conventional polyamide curing agent, the phenolic aldehyde amine curing agent has the advantages of more convenient construction in winter, better wettability for base materials, high coating crosslinking density, no pinhole and stronger solvent resistance and corrosion resistance; 2, the coating surface of the paint is smooth and specular gloss can reach more than 70 and is improved by15 to 30 percent compared with that of the like products; and 3, the paint is added with an abrasion-resistant filler, such as white ceramic, hollow microsphere and the like, so the abrasion resistance of the coating is greatly improved.

Description

technical field [0001] The invention relates to an internal drag reduction coating for natural gas pipelines, in particular to a natural gas pipeline drag reduction and wear-resistant coating. Background technique [0002] The transportation of natural gas is mainly completed by pipelines, which has the advantages of safety and low cost. Therefore, the research is suitable for drag-reducing coatings in natural gas transmission pipelines. It can reduce the surface roughness of the inner surface of the pipeline, reduce the resistance of transportation, and increase the transportation volume. It is very important to reduce the cost, protect the inner wall from medium corrosion, and prolong the service life of the steel pipe. [0003] The existing pipeline internal drag reduction coating is prepared by using polymer resin and its curing agent, plus certain additives and pigments and fillers. The disadvantage is that the surface friction coefficient of the coating is not low enou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/00F16L58/10
Inventor 粟鹰李明张鹏珍李芳
Owner SHANGHAI HILONG ANTI CORROSION TECH ENG
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