High-temperature-resistant epoxy powder coating for corrosion prevention of pipeline

A technology of epoxy powder and high temperature resistance, applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of not involving pipes, not involving the temperature resistance of epoxy powder coatings, etc.

Inactive Publication Date: 2015-04-08
SHANGHAI HILONG PETROCHEM RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some patent documents introduce high temperature resistant epoxy powder coatings and preparation methods thereof, but the disclosed documen...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) The high-temperature-resistant epoxy powder coating for pipeline anticorrosion of the present invention has a weight percentage of each raw material component:

[0030] Epoxy resin 60%, 1168 modified novolac epoxy resin produced by Daqing Qinglu Company, epoxy value 0.2-0.3eq / 100g, softening point 65-75°C.

[0031] Toughening resin 4%, using 6015 nitrile rubber modified solid epoxy resin produced by Jiangsu Shengjie Company.

[0032] Imidazole curing agent 4%, adopt the G91 imidazole curing accelerator produced by Estron Company.

[0033] Mica powder 18%, adopts 1250 mesh mica powder produced by Shanghai Yuejiang Titanium Dioxide Company.

[0034] Barite powder 12%, using 800 mesh barite powder produced by Shanghai Liangjiang Titanium Dioxide Company.

[0035] Iron oxide yellow 0.9%, adopts iron oxide yellow produced by Shanghai Yipin Pigment Company.

[0036] Phthalocyanine blue 0.1%, using the phthalocyanine blue produced by Shanghai Yipin Pigment Company.

[...

Embodiment 2

[0051] (1) The high-temperature-resistant epoxy powder coating for pipeline anticorrosion of the present invention has a weight percentage of each raw material component:

[0052] Epoxy resin 50%, (the raw material that adopts is with embodiment 1).

[0053] Toughening resin 3%, (the raw material that adopts is the same as embodiment 1).

[0054] Modified phenolic curing agent 3%, adopt the G92 modified phenolic curing accelerator produced by Estron Company.

[0055] Wollastonite powder 20%, adopt the wollastonite powder produced by Siyuan Mining Co., Ltd.

[0056] Titanium dioxide 15%, using R-930 titanium dioxide produced by DuPont.

[0057] Barite powder 5%, (the raw material that adopts is the same as embodiment 1).

[0058] Iron oxide yellow 1.8%, (the raw material that adopts is the same as embodiment 1).

[0059] Phthalocyanine blue 0.2%, (the raw material that adopts is the same as embodiment 1).

[0060] Acrylic acid leveling agent 1.0%, (the raw material that ad...

Embodiment 3

[0066] (1) The high-temperature-resistant epoxy powder coating for pipeline anticorrosion of the present invention has a weight percentage of each raw material component:

[0067] Epoxy resin 54%, (the raw material that adopts is with embodiment 1).

[0068] Toughening resin 3.6%, (the raw material that adopts is the same as embodiment 1).

[0069] Modified phenolic curing agent 3.5%, (the raw material that adopts is the same as embodiment 2).

[0070] Mica powder 15%, (the raw material that adopts is the same as embodiment 1).

[0071] Titanium dioxide 15%, (the raw material that adopts is the same as embodiment 2).

[0072] Barite powder 6%, (the raw material that adopts is the same as embodiment 1).

[0073] Iron oxide yellow 1.3%, (the raw material that adopts is the same as embodiment 1).

[0074] Phthalocyanine blue 0.2%, (the raw material that adopts is the same as embodiment 1).

[0075] Acrylic acid leveling agent 0.8%, (the raw material that adopts is the same as ...

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Abstract

The invention relates to a high-temperature-resistant epoxy powder coating for corrosion prevention of a pipeline. The high-temperature-resistant epoxy powder coating comprises the following raw material components in percentage by weight: 50-60% of modified phenolic epoxy resin, 3-4% of toughened resin, 3-4% of a curing agent, 30-40% of a filler, 1-2% of pigments and 1-2% of additives. The epoxy value of the modified phenolic epoxy resin is 0.2-0.3eq/100g, and the softening point is 65-75 DEG C; the toughened resin is solid epoxy resin modified by nitrile butadiene rubber; the curing agent is an imidazole curing agent or a modified phenolic curing agent; the filler is titanium dioxide, wollastonite powder, mica powder, barite powder or several types thereof; the pigments comprise phthalocyanine blue and iron oxide yellow; and the additives comprise more of an acrylic acid leveling agent, a benzoin defoaming agent, a fumed silica thixotropic agent and dimethylimidazole. As a bottom-layer coating of a 3PE (polyethylene)/3PP (polypropylene) anti-corrosion coating, the high-temperature-resistant epoxy powder coating can still keep good binding force at the temperature of 120 DEG C and further ensure that the 3PE/3PP anti-corrosion coating can still keep stable coating performance at the temperature of 120 DEG C.

Description

technical field [0001] The invention relates to the technical field of industrial coatings, in particular to a 3PE / 3PP high temperature resistant epoxy powder coating suitable for anticorrosion of steel pipelines. Background technique [0002] The use of steel pipelines for long-distance transportation of resources has become a common means used in industry at this stage, such as oil transportation, natural gas transportation, heat supply transportation, water supply transportation and so on. In the long-distance transportation of pipelines, the protection of steel pipelines is particularly important. Because there are longer steel pipes buried far away from people's living and living places, and some areas even have complicated environmental conditions. Therefore, people will do their best to protect steel pipelines, among which anticorrosion is an important part. At present, the anti-corrosion of steel pipelines in my country mainly adopts 3PE (three-layer structure poly...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D163/00C09D5/03C09D5/08C09D7/12
CPCC08L2205/03C09D5/03C09D5/08C09D7/61C09D163/04C08L63/00C08L9/02
Inventor 任雪任卫东丁武斌
Owner SHANGHAI HILONG PETROCHEM RES INST
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