Inner wall anti-drag environment-friendly coating for long-distance pipeline and preparation method thereof

An environmentally friendly coating and pipeline technology, applied in the field of coatings, can solve problems such as the great impact on the health of front-line operators, achieve excellent anti-sag performance, improve stain resistance, and reduce surface tension.

Inactive Publication Date: 2020-12-01
北京红狮科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the common dry gas-type drag-reducing and wear-resistant coatings cannot meet the requirements of rich gas transportation in terms of the above performance indicators, and further research and testing must be carried out on this basis
[0006] O

Method used

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  • Inner wall anti-drag environment-friendly coating for long-distance pipeline and preparation method thereof
  • Inner wall anti-drag environment-friendly coating for long-distance pipeline and preparation method thereof
  • Inner wall anti-drag environment-friendly coating for long-distance pipeline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0034] Polyurethane modified epoxy resin:

[0035] Polyurethane modified epoxy resin is prepared by the raw materials of following weight fraction:

[0036] 1,4 Butanediol diglycidyl ether: 202 parts

[0037]Ethylene glycol amine: 38.5 parts

[0038] IPDI: 222 copies

[0039] Polypropylene glycol (PPG400): 400 parts.

[0040] Polyurethane modified epoxy resin is prepared by the following method:

[0041] Put 1,4-butanediol diglycidyl ether in a three-necked flask according to the formula quantity, add ethylene glycol amine dropwise, raise the temperature to 85°C for 2 hours, add IPDI, add the catalyst dibutyltin dilaurate and react for 1 hour to obtain Epoxy resin whose side group contains -NCO group; add PPG400 and continue to react for 4 hours under the protection of nitrogen to obtain polyurethane modified epoxy resin.

[0042] The weight composition of the raw material component A of the inner wall drag-reducing environmental protection coating of a long-distance pipe...

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PUM

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Abstract

The invention provides an inner wall anti-drag environment-friendly coating for a long-distance pipeline. The coating comprises a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight, 40 to 45 parts of E51 epoxy resin, 5 to 10 parts of toughening resin, 0.3 to 1.0 part of a dispersant, 8 to 15 parts of a pigment, 15 to 20 parts of precipitated barium sulfate, 10 to 20 parts of silica powder, 0.5 to 1.5 parts of an anti-settling auxiliary agent, 0.1 to 1.0 part of an antifoaming agent, 0.3 to 1 part of a leveling agent, 3 to 5 parts of a silane coupling agent and 4 to 6 parts of polytetrafluoroethylene wax powder. The component B is prepared from 40 to 50 parts of alicyclic amine modified polyamide polymer and 50 to 60 partsof modified amine. The coating meets a preheating double-pipe feeding high-pressure airless spraying construction mode, can be thinly sprayed to form a film with the thickness of 60-150 microns at a time, is a low-viscosity thinly-coated environment-friendly coating and has excellent toughness and wear resistance and drag reduction performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an inner wall drag-reducing and environment-friendly coating for long-distance pipelines, and at the same time, the invention also relates to a preparation method of the coating. Background technique [0002] In the field of long-distance or long-term fluid transportation, the research and application of drag reduction technology has a long history. Drag reduction technology is widely used in various large-scale projects all over the world due to its performance advantages of low input and high output. The drag-reducing inner coating can greatly reduce the friction coefficient, increase the gas transmission volume, and reduce the gas transmission power. At the same time, the drag-reducing inner coating can also reduce the number of pigging times, reduce corrosion, and reduce operating costs. The economic and social benefits have been recognized in the industry through more than...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/45C09D7/65C09D7/63C09D7/61C08G59/14C08G59/60
CPCC08G59/1477C08G59/1494C08G59/60C08K2003/3045C08L2203/18C08L2205/025C08L2205/035C09D163/00C09D7/45C09D7/61C09D7/63C09D7/65C08L63/00C08L57/02C08L27/18C08L91/00C08K13/06C08K9/06C08K7/26C08K3/36C08K3/30C08K5/5435C08K5/5419C08K5/5406
Inventor 高树强秦铁汉张治平宋连景李思成宋健王志伟王建刚
Owner 北京红狮科技发展有限公司
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