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Water-based internal drag-reducing epoxy coating for pipelines and its preparation method, anti-corrosion coating, and application

A technology for drag-reducing rings and pipes, applied in epoxy resin coatings, pipeline anti-corrosion/rust protection, anti-corrosion coatings, etc., can solve the problem of reducing the corrosion resistance of cross-linking density coatings and reducing the cross-linking density of water-based epoxy coatings , Affect the adhesion between the coating and the substrate, etc., to achieve the effect of improving adhesion, improving cathodic disbonding resistance, and improving anti-corrosion ability

Active Publication Date: 2022-02-22
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, due to the high surface tension of water, the wettability of water-based epoxy coatings to steel is poor, and problems such as shrinkage cavities and poor adhesion are prone to occur
Secondly, in the process of preparing water-based epoxy emulsion, a large number of hydrophilic groups are usually introduced into the resin segment, which will greatly reduce the cross-linking density of the water-based epoxy coating, thereby affecting the relationship between the coating and the substrate. Adhesion between
At the same time, the introduction of a large number of hydrophilic groups and the reduction of crosslinking density will lead to a decrease in the corrosion resistance of the coating.

Method used

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  • Water-based internal drag-reducing epoxy coating for pipelines and its preparation method, anti-corrosion coating, and application
  • Water-based internal drag-reducing epoxy coating for pipelines and its preparation method, anti-corrosion coating, and application
  • Water-based internal drag-reducing epoxy coating for pipelines and its preparation method, anti-corrosion coating, and application

Examples

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Embodiment 1

[0095] In the present embodiment, the steps of the manufacturing method of the drag-reducing epoxy coating in the water-based pipeline are as follows, and the ratio of each component is parts by weight:

[0096] Step 1, mix 0.5 parts of deionized water, 0.02 parts of AFCONA2501 defoamer, 0.03 parts of BYK181 dispersant, 0.02 parts of BYK333 wetting and leveling agent, 0.02 parts of synthro-cor C E660 B anti-flash rust agent, 0.02 parts of COATOSIL MP200 silane After mixing the coupling agent and 0.02 part of Densil P fungicide, stir at room temperature, add 0.6 part of barium sulfate, 0.5 part of micaceous iron oxide ash, 0.4 part of zinc aluminum phosphate, 0.008 part of clay, and 0.01 part of modified graphite while stirring Alkene and 0.1 part of modified nano-SiO 2 , continue to stir at high speed for 1 hour, so that the components are uniformly dispersed, and water slurry is obtained;

[0097] Step 2, mixing 1 part of water-based epoxy resin emulsion with the obtained wa...

Embodiment 2

[0105] The manufacture method step of the drag-reducing epoxy coating in the water-based pipeline of present embodiment 2 is as follows, and the ratio of each component is parts by weight:

[0106] Step 1, add 0.5 parts of deionized water, 0.02 parts of AFCONA2505 defoamer, 0.03 parts of AFCONA5065 dispersant, 0.02 parts of BYK378 wetting and leveling agent, 0.02 parts of anti-flash rust agent 9079, 0.02 parts of COATOSIL MP200 silane coupling agent, 0.02 parts 1 part of Densil ZOD bactericide was mixed and stirred at normal temperature, and 0.5 part of barium sulfate, 0.6 part of micaceous iron oxide ash, 0.5 part of zinc aluminum phosphate, 0.009 part of pottery clay, 0.01 part of modified graphene and 0.1 part of modified Nano-SiO 2 , continue to stir at high speed for 1 hour, so that each component is dispersed evenly, and a water slurry is obtained;

[0107]Step 2, mixing 1 part of water-based epoxy resin emulsion with the obtained water slurry and stirring evenly, and s...

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Abstract

The invention relates to a water-based internal drag-reducing epoxy coating for pipelines and its preparation method, anti-corrosion coating and application, and belongs to the technical field of anti-corrosion coatings. The water-based internal drag-reducing epoxy coating for pipelines provided by the invention includes a first component and a second component. Components, by weight, the first component includes: 1 part of water-based epoxy emulsion, 0.3-0.5 part of deionized water, 0.005-0.01 part of modified graphene, modified nano-SiO 2 0.05‑0.1 part, 0.95‑1.25 part of pigment and filler, 0.01‑0.02 part of defoamer, 0.01‑0.03 part of dispersant, 0.01‑0.03 part of leveling agent, 0.01‑0.02 part of anti-flash rust agent, 0.01‑0.02 part of adhesion promoter 0.02 part, 0.01-0.02 part of fungicide, 0.01-0.02 part of thickener, the second component includes: 1 part of water-based epoxy amine curing agent, 0.2 part of film-forming aid; it can greatly reduce the air transmission resistance and can be used Anti-corrosion and protection of the inner wall of natural gas, coal-to-gas, and natural gas-condensate gas-liquid mixed transportation pipelines.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a drag-reducing epoxy coating in a water-based pipeline, a preparation method thereof, an anti-corrosion coating and an application thereof. Background technique [0002] With the continuous strengthening of people's awareness of environmental protection, more and more attention has been paid to the development and use of environmentally friendly coatings. Water-based anti-corrosion coatings is a major trend in the development of the coatings industry today, and the country is also vigorously promoting the development of water-based coatings. Compared with solvent-based coatings, water-based coatings greatly reduce the VOC content, and even reduce the VOC content to zero, which is a real "green" coating. [0003] Waterborne epoxy coatings are widely used because of their good handling properties, good adhesion to most substrates, and the ability to cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/61F16L58/04
CPCC09D163/00C09D5/084C09D7/62C09D7/61F16L58/04C08K2201/011C08K2003/3045C08K2003/2265
Inventor 石家烽郭晓军崔灿灿韩忠智王磊丁超李石孙肇兴刘杨宇刘本华段绍明
Owner BC P INC CHINA NAT PETROLEUM CORP
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