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Solvent-free epoxy coating for steel pipe pile

An epoxy coating, solvent-free technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve problems such as ineffective protection of steel, and achieve good film-forming properties, excellent seawater resistance, and stable storage.

Inactive Publication Date: 2015-03-25
COSCO KANSAI PAINT & CHEM TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coatings in the prior art can only adapt to other relatively less corrosive atmospheric areas, full immersion areas, etc., but cannot effectively protect steel in tidal range areas

Method used

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  • Solvent-free epoxy coating for steel pipe pile
  • Solvent-free epoxy coating for steel pipe pile
  • Solvent-free epoxy coating for steel pipe pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The unit is parts by mass

[0017] Main ingredient:

[0018]

[0019]

[0020] Hardener:

[0021] Modified amine 96.0 parts

[0022] 4.0 parts of curing accelerator

[0023] Prepare the main agent and curing agent according to the mass ratio of 10:3. The specific preparation method is: add the components in the main agent except the anti-settling agent into the reaction kettle for high-speed stirring, and disperse them into a slurry, and then use After the grinder grinds to 50 microns, add anti-sedimentation agent and stir evenly at low speed; then add modified amine and curing accelerator to the main ingredient and stir evenly before discharging.

Embodiment 2

[0025] The unit is parts by mass

[0026] Main agent:

[0027]

[0028] Hardener:

[0029] Modified amine 97.0 parts

[0030] 3.0 parts of curing accelerator

[0031] Prepare the main agent and curing agent according to the mass ratio of 10:3. The specific preparation method is: add the components in the main agent except the anti-settling agent into the reaction kettle for high-speed stirring, and disperse them into a slurry, and then use After the grinder grinds to 50 microns, add anti-sedimentation agent and stir evenly at low speed; then add modified amine and curing accelerator to the main ingredient and stir evenly before discharging.

[0032] Described low-molecular-weight epoxy resin is the multi-epoxy-based low-molecular-weight epoxy resin produced by Mitsui of Japan or HEXION of the United States, 828 and 128 produced by Nanya Resin, and domestic brand E-51 epoxy resin.

[0033] The modified amine is a diethylenetriamine-modified amine curing agent produced by...

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Abstract

The invention provides a solvent-free epoxy coating for a steel pipe pile, which is mainly applied to anticorrosive protection of steel pipe piles in oceanographic engineering. A main agent and a curing agent are fully mixed and cured to obtain a special heavy anti-corrosion coating, wherein the main agent comprises epoxy resin, an epoxy flexibilizer, pigments and filler, glass flakes and aluminum oxide and the curing agent comprises modified amine and a curing accelerant. Besides excellent epoxy corrosion resistance, the solvent-free epoxy coating for the steel pipe pile, provided by the invention, further has excellent seawater resistance, so that the coating particularly meets the anticorrosive requirement of the steel pipe pile in a tidal zone, further can be used for effectively protecting steel products in the fields such as corrosion prevention of storage tanks, sewage pipelines, pipelines of a chemical plant and the like, so that the steel can resist 20wt% hydrochloric acid, 20wt% sodium hydroxide and 60wt% sulfuric acid for a long time. The product has a very good film forming property and is stable to store.

Description

technical field [0001] The invention relates to an epoxy coating, in particular to a solvent-free epoxy coating for steel pipe piles. Background technique [0002] At present, the continuous progress of marine engineering has made a significant contribution to social and economic development. However, because seawater contains a large amount of salt electrolyte solution, it will cause corrosion to the steel used in marine engineering equipment, affect the normal operation of engineering equipment, and even cause safety accidents. Especially for facilities such as tidal power stations, which are scoured by waves and seabed sediment all the year round, their steel materials are more susceptible to erosion by seawater. [0003] In the prior art, anti-corrosion paint is usually sprayed on the steel surface to prevent it from being corroded and cracked in the marine environment, but the effects are not satisfactory. For example, seawater can usually be divided into atmospheric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
CPCC09D163/00C09D5/08C09D7/61C09D7/65
Inventor 崔文柱杜景怡吴权
Owner COSCO KANSAI PAINT & CHEM TIANJIN
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