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Drag-reducing abrasion-resisting solventless coating for pipeline as well as preparation method and application thereof

A solvent-free coating and pipeline technology, which is applied in the direction of pipeline damage/abrasion prevention, pipeline protection, anti-corrosion coating, etc. It can solve the problems of poor storage stability of operational coatings, high VOC content, inconvenient construction, etc., to eliminate physical injuries , reduce the use of ventilation equipment, good effect of drag reduction and wear resistance

Active Publication Date: 2013-03-06
SHANGHAI HILONG SHINE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of solvent-based coatings are: high VOC content, sensitivity to moisture in the environment, poor construction operability and paint storage stability, and easy foaming of the paint film. More importantly, solvent-based coatings are usually not environmentally friendly.
However, solvent-free coatings also have disadvantages. For example, the viscosity of the coating is high, and the construction is not very convenient, and the coating needs to be heated when spraying; due to the high viscosity, it is difficult to obtain a thinner coating, which is often suitable for thick coating; The film substance is a low molecular weight resin, so its coating is generally brittle

Method used

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  • Drag-reducing abrasion-resisting solventless coating for pipeline as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Components of drag-reducing and wear-resistant solvent-free coatings for pipelines

[0065] Contains component A and component B, the mass percentage of each component raw material is:

[0066] Component A:

[0067] Epoxy resin 35.00%, using products from Hongchang Electronic Materials Co., Ltd. or Sinopec Yueyang Petrochemical Plant;

[0068]Toughening resin 6.50%, using the product of Shanghai Hongke Chemical Co., Ltd.;

[0069] Reactive diluent 5.60%; use Cardolite products;

[0070] Leveling agent 0.33%, using the product of BYK Chemical Auxiliary Company in Germany;

[0071] Defoamer 0.35%, using the product of German BYK Chemical Auxiliary Company;

[0072] Dispersant 0.60%, using the product of BYK Chemical Auxiliary Company in Germany;

[0073] Anti-sedimentation thickener 0.28%, using the product of Huaxia Auxiliary Company;

[0074] Zinc phosphate 6.50%, using the product of Shanghai Yipin Pigment Co., Ltd.;

[0075] Iron oxide red powder 12.00%, th...

Embodiment 2

[0095] (1) Components of drag-reducing and wear-resistant solvent-free coatings for pipelines

[0096] Contains component A and component B, the mass percentage of each component raw material is:

[0097] Component A:

[0098] Epoxy resin 38.00%;

[0099] Toughening Resin 8.00%

[0100] Active diluent 5.00%;

[0101] Leveling agent 0.30%;

[0102] Defoamer 0.32%;

[0103] Dispersant 0.50%;

[0104] Anti-settling thickener 0.42%

[0105] Zinc phosphate 5.00%;

[0106] Iron oxide red powder 10.00%;

[0107] White ceramic powder 4.55%

[0108] Aluminum tripolyphosphate 5.91%;

[0109] Component B:

[0110] Modified amine 12%;

[0111] Modified polyamide 10%;

[0112] When the coating is used, component A and component B are used together in a mass ratio of A:B =3.5:1.

[0113] (2) Specific steps of preparation

[0114] (with embodiment 1).

[0115] (3) Application method

[0116] (with embodiment 1).

Embodiment 3

[0118] (1) Components of drag-reducing and wear-resistant solvent-free coatings for pipelines

[0119] Contains component A and component B, the mass percentage of each component raw material is:

[0120] Component A:

[0121] Epoxy resin 32.00%;

[0122] Toughening resin 7.50%;

[0123] Reactive diluent 6.00%;

[0124] Leveling agent 0.35%;

[0125] Defoamer 0.40%;

[0126] Dispersant 0.65%;

[0127] Anti-settling thickener 0.50%;

[0128] Zinc phosphate 6.50%;

[0129] Iron oxide red powder 14.00%;

[0130] Aluminum tripolyphosphate 8.60%;

[0131] White ceramic powder 5.50%;

[0132] Component B:

[0133] Modified amine 14%;

[0134] Modified polyamide 4%

[0135] When the paint is used, component A and component B are used in conjunction with the mass ratio A:B = 4.5:1.

[0136] (2) Preparation method

[0137] (with embodiment 1).

[0138] (3) Application method

[0139] (with embodiment 1).

[0140] The drag-reducing and wear-resistant solvent-free paint...

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Abstract

The invention relates to a drag-reducing abrasion-resisting solventless coating for a pipeline as well as a preparation method and application thereof. The drag-reducing abrasion-resisting solventless coating contains an A component and a B component, wherein the mass percentage of raw materials is as follows: the A component includes the following materials in percentage by weight: 30%-40% of epoxy resin, 5%-10% of toughening resin, 4%-8% of active diluents, 4%-8% of zinc phosphate, 0.2%-0.5% of levelling agents, 0.2%-0.5% of defoaming agents, 0.4%-0.8% of dispersing agents, 0.2%-1.0% of anti-settling thickening agents, 8%-20% of ferric oxide red powder, 5%-15% of aluminium triphosphate and 5%-15% of white pottery magnetic powder; the B component includes the following materials in percentage by weight: 5%-20% of modified amine and 2%-10% of modified polyamide; and the A component and the B component are matched for use according to the mass ratio of 3-5:1. The drag-reducing abrasion-resisting solventless coating is prepared through material blending, dispersion, grinding, filtration and packaging and can be applied in delivery pipelines of oil and natural gases. The drag-reducing abrasion-resisting solventless coating does not contain volatile solvents and has the advantages of good adhesive force, flexibility, salt spray resistance and solvent resistant property, smooth coating surface, good drag-reducing abrasion-resisting effect, convenient construction, resource saving and good popularization and application prospect.

Description

technical field [0001] The invention relates to the technical field of coatings in chemical technology, in particular to a drag-reducing and wear-resistant solvent-free coating for pipelines, a preparation method thereof, and a method for applying (spraying) the solvent-free coating in large pipelines. Background technique [0002] The large-scale pipeline described in the present invention refers to the large-caliber long-distance oil and natural gas transmission pipeline with a diameter of more than 500mm used in the petroleum field. Use specialized paint. What the present invention mainly relates to is the drag-reducing coating in the pipeline, therefore, just no longer discuss other coatings. [0003] The existing (domestic) large-scale internal drag-reducing coatings are all solvent-based coatings. The disadvantages of solvent-based coatings are: high VOC content, sensitivity to moisture in the environment, poor construction operability and storage stability of coatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D163/02C09D7/12C09D5/08F16L57/06
Inventor 孙健丁武斌李芳张鹏珍
Owner SHANGHAI HILONG SHINE NEW MATERIAL
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