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Wear-resistant epoxy powder coating for pipeline

A technology of epoxy powder and coating, applied in the field of coatings, can solve the problems of wear resistance and weight loss that cannot meet design requirements, large pipelines cannot meet anti-corrosion and wear resistance, rapid construction, coating adhesion function can not keep up, etc.

Inactive Publication Date: 2014-01-29
SHANGHAI HILONG PETROCHEM RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 99106143.8 discloses a "hardened wear-resistant floor and its construction method", which belongs to inorganic coating and cannot meet the requirements of anti-corrosion
Chinese patent 200910196721.3 discloses a "preparation of ultra-high wear-resistant and anti-hydrogen sulfide polyether ether ketone aqueous suspension specially used for oil well pipes". According to analysis, the suspension cannot meet the requirements of anti-corrosion, wear-resistant and rapid construction of large pipelines
Chinese patent 201110148823.5 discloses "a new type of flexible wear-resistant ceramic material and its preparation method". Although the flexible wear-resistant ceramic material has wear resistance, the adhesion function of the coating cannot keep up, and it cannot be used for anti-corrosion requirements. construction projects
However, its wear resistance and weight loss resistance of 200-400mg (ASTM D 1044 is CS-17 wheel / 1kg load / 5000 revolutions) cannot meet the design requirements of ≤80mg

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A wear-resistant epoxy powder coating for pipelines, the mass percentage of its components is:

[0032] Novolac epoxy resin 60%, adopting the product of Dow Chemical Company model as 672U;

[0033] 5% phenolic curing agent, adopting the product of Dow Chemical Company model as DEH81;

[0034] Latent amine (a combination of sebacic acid dihydrazide and aminophenyl sulfone, the ratio is 1:1) 10%;

[0035] 2-Methylimidazole 0.1%, using the product of Shanghai Sanwei Industrial Company;

[0036] Silica powder 20%, adopt Lianyungang Donghai company silicon powder 600 mesh sintered quartz powder;

[0037] Pigment (phthalocyanine blue) 0.5%; adopt the product of BASF company;

[0038] Leveling agent (polyacrylate) 0.4%, use the product of Ningbo Nanhai Chemical Company model 503; or use the product of ESTRON Company model PF-67; or use the product of BYK Chemical Company model BYK3900P, BYK3951P;

[0039] Benzoin 0.5%, using the product of Shanghai Ethyl Chemical Co., Ltd....

Embodiment 2

[0052] A wear-resistant epoxy powder coating for pipelines, the mass percentage of its components is:

[0053] Dicyclopentadiene epoxy resin 35%, using the products of Hunan Jiashengde New Material Co., Ltd.;

[0054] 5% phenolic curing agent, using products from Suzhou Shengjie Special Resin Co., Ltd.;

[0055]Isophthalic acid dihydrazide 1%, the product of Yangzhou Hengsheng Chemical Co., Ltd.;

[0056] 2-phenylimidazole 0.2%, using products from Huangshan Xinjia Fine Materials Co., Ltd.;

[0057] Silica powder 45%, adopt Lianyungang Donghai Company silicon powder 600 mesh fused quartz powder;

[0058] Pigment (titanium white and iron yellow, ratio 1:1) 0.5%;

[0059] Leveling agent 0.4%, adopt the product of Estron company model PF-67;

[0060] Benzoin 0.5%, using products from Ningbo Nanhai Chemical Company;

[0061] Silicone resin 11.9%, using Changzhou Jianuo company model FM-CB product;

[0062] Fumed silica 0.5%, adopts the product of Degussa Company model N-20. ...

Embodiment 3

[0066] A wear-resistant epoxy powder coating for pipelines, the mass percentage of its components is:

[0067] Oxazolidinone epoxy resin 35%;

[0068] Phenolic curing agent 12%;

[0069] Aminophenylsulfone 1%, the product of Suzhou Yinsheng Chemical Co., Ltd.;

[0070] Boron trifluoride-amine complex 0.1%, using the product of Tici Ai Chemical Industry Development Co., Ltd.;

[0071] Silica powder 45%, using products from Lianyungang Donghai Company;

[0072] Pigment (one of phthalocyanine blue or iron yellow) 0.5%;

[0073] Leveling agent 0.4%, using BYK chemical company model BYK3900P product;

[0074] Benzoin 0.5%, using products from Ningbo Nanhai Chemical Company;

[0075] Cyanate ester resin 5%, using products from Dow Chemical Company;

[0076] Fumed silica 0.5%, adopts the product of Cabot company model A-200.

[0077] The preparation method of the wear-resistant epoxy powder coating for pipelines is the same as in Example 1.

[0078] The experimental results o...

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Abstract

The invention relates to a wear-resistant epoxy powder coating for a pipeline. The wear-resistant epoxy powder coating comprises the following components in percentage by weight: 35-60% of epoxy resin, 5-12% of phenolic curing agent, 1-10% of latent amine type curing agent, 0.1-2% of curing accelerator, 20-45% of filler, 0.5-1% of pigment, 0.5-1% of benzoin, 0.4-1% of leveling agent, 1-30% of additive resin and 0.5-1% of gas-phase silicon dioxide. The preparation steps are as follows: (1) weighing the raw materials except white carbon black, wherein the error does not exceed 0.1%; (2) mixing the raw materials by using a high-speed dispersing machine; (3) performing twin-screw melt extrusion; (4) tabletting; (5) crushing; (6) grinding; and (7) boxing the qualified 120-mesh epoxy powder coating. The coating provided by the invention is mainly based on an epoxy system, the curing accelerator and the additive resin are added to improve the crosslinking density and the hardness of a coat and further improve the wear resistance of the coat; and the performances of the coat can reach the requirements of American Preservers Association of Engineers 0394 after the coating is cured.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a wear-resistant epoxy powder coating for pipelines. Background technique [0002] With the development of society, the construction of oil transportation, liquefied gas transportation, seawater desalination transportation and other projects has increased relatively. The construction of these projects requires the use of large pipelines, including 3PE (polyethylene) and 3PP (polypropylene) pipelines. In order to improve the transmission effect of these pipelines, especially those used in sandy areas, Gobi, mountains and other working conditions, corresponding coatings are generally applied to improve the wear resistance and corrosion resistance of the pipelines. [0003] At present, the wear-resistant coatings used for pipelines can rarely be cured quickly at 200-230°C / 2min, and the wear-resistant and anti-corrosion properties can be further improved. Chinese patent 99106143.8...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D163/02C09D163/04C09D7/12C09D5/03
Inventor 陈海林孙健丁武斌任雪
Owner SHANGHAI HILONG PETROCHEM RES INST
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