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Solvent-free anticorrosive coating for directionally-drilled pipelines and preparation method for same

An anti-corrosion coating, solvent-free technology, applied in the field of coatings, can solve problems such as wear and scratches, and achieve the effect of improving penetration resistance, eliminating pinholes, salt spray resistance and electrochemical corrosion resistance.

Active Publication Date: 2013-03-27
海隆石油产品技术服务(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the 3PE anti-corrosion coating is used for directional drilling, the curved part of the pipe hole and the raised rocks, pebbles, and gravel will cause wear and scratches to the relatively soft 3PE anti-corrosion coating

Method used

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  • Solvent-free anticorrosive coating for directionally-drilled pipelines and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1 A solvent-free anticorrosion coating for directional drilling pipelines, the preparation method of which comprises the following steps:

[0075] (1) Raw material preparation

[0076] Contains component A and component B, the mass percentage of the raw materials of component A and component B is:

[0077] Component A:

[0078] Epoxy resin 45.00%, using the product of DOW in the United States, the model is DER.852;

[0079] Reactive diluent 2.60%, using the product of Changxing Chemical, the product name is TMPTA;

[0080] Leveling agent 0.30%, the product of German BYK Chemical Auxiliary Company, the model is BYK330;

[0081] 0.20% defoamer, the product of German BYK Chemical Auxiliary Company, the model is BYK052;

[0082] Dispersant 0.60%, using AFCONA4570 products from Afcana;

[0083] Anti-settling thickener 1.50%, adopt the product of DuPont Company, model is A-200;

[0084] PTFE wax 5.00%, the product of Shanghai Joule Wax Industry Co., Ltd., the ...

Embodiment 2

[0110] Example 2 A solvent-free anticorrosion coating for directional drilling pipelines, the preparation method of which comprises the following steps:

[0111] (1) Raw material preparation

[0112] Contains component A and component B, the mass percentage of the raw materials of component A and component B is:

[0113] A component: (the raw material that adopts is identical with embodiment 1)

[0114] Epoxy resin 50.00%;

[0115] Reactive diluent 4.00%;

[0116] Leveling agent 0.50%;

[0117] Defoamer 0.30%;

[0118] Dispersant 0.70%;

[0119] Anti-settling thickener 1.20%;

[0120] PTFE wax 4.00%;

[0121] Superhard wear-resistant powder 8.00%;

[0122] Graphite 4.00%;

[0123] Molybdenum disulfide 1.00%;

[0124] Talc 6.80%;

[0125] Aluminum zinc orthophosphate hydrate 1.50%;

[0126] Strontium aluminum polyphosphate hydrate 0.50%;

[0127] Component B:

[0128] Homemade modified amine 16.00%;

[0129] Thixotropic thickener 1.50%.

[0130] When the paint...

Embodiment 3

[0139] Example 3 A solvent-free anticorrosion coating for directional drilling pipelines, the preparation method of which comprises the following steps:

[0140] (1) Raw material preparation

[0141] Contains component A and component B, the mass percentage of the raw materials of component A and component B is:

[0142] Component A:

[0143] Epoxy resin 55.00%;

[0144] Reactive diluent 2.00%;

[0145] Leveling agent 0.50%;

[0146] Defoamer 0.50%;

[0147] Dispersant 0.80%;

[0148] Anti-settling thickener 1.00%;

[0149] PTFE wax 6.00%;

[0150] Superhard wear-resistant powder 5.00%;

[0151] Graphite 2.00%;

[0152] Molybdenum disulfide 2.00%;

[0153] Talc 1.20%;

[0154] Aluminum zinc orthophosphate hydrate 2.00%;

[0155] Strontium aluminum polyphosphate hydrate 1.00%;

[0156] Component B:

[0157] Homemade modified amine 20.00%;

[0158] Thixotropic thickener 1.00%.

[0159] When the paint is used, the A component and the B component are used in combin...

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Abstract

The invention relates to a solvent-free anticorrosive coating for directionally-drilled pipelines and a preparation method for the same, wherein the solvent-free anticorrosive coating comprises a constituent A and a constituent B; the raw materials of the constituent A contain epoxy resin, an activated thinning agent, an anti-settling thickening agent, a levelling agent, a defoaming agent, a dispersing agent, polytetrafluoroethylene wax, ultrahard wear-resistant powder, graphite, molybdenum disulfide, talcum powder, zinc aluminium orthophosphate hydrate and strontium aluminium polyphosphate hydrate; the raw materials of the constituent B contain home-made amine which is a phenolic modified fatty amine epoxy resin curing agent, and a thixotropic thickening agent; the constituent A and the constituent B are used together in a ratio of (4 to 6): 1 by mass; and the preparation method comprises the following steps of: (1) preparing raw materials, (2) proportioning and dispersing, (3) grinding, and (4) filtering and packaging. The solvent-free anticorrosive coating disclosed by the invention is free from a volatile solvent, easy to coat, capable of eliminating the pinholes of the coating, improved in permeability resistance, wear resistance and corrosion resistance, and suitable for being applied to directionally-drilled pipelines.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a solvent-free anti-corrosion coating coated on the outside of a directional drilling pipeline and a preparation method thereof. Background technique [0002] In urban construction, pipeline gas is an important infrastructure construction. Because there are many buildings in the city, and there will be hills sandwiched among them, it is impossible to use the method of excavating and laying pipes on the ground. Therefore, more and more directional drilling technology is used in the construction of urban gas pipelines. [0003] At present, directional drilling technology should still be a relatively new technology. Due to the inconvenient inspection and maintenance of the pipelines traversed by directional drilling, the requirements for directional drilling pipelines are more stringent: not only strict requirements are imposed on the pipe shape, but also strict requirements on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D127/18C09D5/08C09D7/12C08G59/62
Inventor 李芳丁武斌
Owner 海隆石油产品技术服务(上海)有限公司
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