Epoxy coating and preparation method and application thereof

An epoxy coating and epoxy resin technology, applied in the coating field, can solve the problems of failing to meet the design requirements, shortening the life of the paint film, and high surface treatment costs, achieving low volatile organic compound content, good thick coating, good adhesion

Active Publication Date: 2014-06-18
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

[0002] At present, the anti-corrosion coating of many steel substrates requires an anti-corrosion period of more than 10 years, and the steel surface treatment before coating largely determines the protection period of the anti-corrosion coating. Most anti-corrosion coatings require steel surface treatment Sand blasting or shot blasting is required, and the rust removal level must reach Sa2.5 or above, so the surface treatment cost is very high, and in some occasions, it is almost impossible to meet the design requirements due to limited conditions; and the high-pressure water or wet sand blasting process There will be flash rust on the surface of steel; most of the steel structure anti-corrosion coatings before the 1990s have entered the maintenance period, and how to prolong the service life of the coating without completely removing the old paint film is also a big problem. Applying ordinary paints under the above conditions may cause shortened film life or compatibility problems between coats

Method used

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  • Epoxy coating and preparation method and application thereof
  • Epoxy coating and preparation method and application thereof
  • Epoxy coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare epoxy coating according to the following composition and parts by weight,

[0030] Main paint:

[0031]

[0032]

[0033] Hardener:

[0034]

[0035] The preparation method of this product is:

[0036] It is characterized by mixing low-molecular-weight bisphenol A epoxy resin DER331, petroleum resin, dibutyl phthalate, xylene, n-butanol, BYK-P104, BYK-052, and bentonite BENTONE 38 and mixing it evenly at high speed. Then add charcoal powder, zinc phosphate, mica iron oxide, aluminum slurry, and talc powder for high-speed dispersion for 0.5-1 hour, and then grind until the fineness meets the requirements, then adjust the product viscosity, and package after it is qualified; the curing agent is separately formulated. When in use, the ratio of the main paint to the curing agent is configured according to the weight ratio of 10:1, and it is used after mixing evenly.

Embodiment 2

[0037] Example 2 Prepare epoxy coating according to the following composition and parts by weight,

[0038] Main paint:

[0039]

[0040] Hardener:

[0041] Polyaminoamide 40

[0042] Cardanol modified phenalkamine 50

[0043] Methyl isobutyl ketone 10

[0044] Total 100

[0045] The preparation method of the high-performance epoxy anticorrosive coating is:

[0046] It is characterized by first combining low molecular weight bisphenol A epoxy resin Epikote 828, K-FLEX 171-90, dibutyl phthalate, xylene, n-butanol, ANTI-TERRA-U, BYK054, DISPARLON 630-20X Mix together at high speed and stir evenly, then add in plaster of paris powder, zinc chromate, mica iron oxide, aluminum slurry, sericite powder, high-speed dispersion for 0.5-1 hours, then grind until the fineness meets the requirements, and then adjust the product viscosity. Pack after qualified; curing agent is separately deployed. When in use, the ratio of the main paint to the curing agent is configured according to the weight ratio...

Embodiment 3

[0047] Example 3 The epoxy coating was prepared according to the following composition and parts by weight.

[0048] Main paint:

[0049]

[0050] Hardener:

[0051] Polyaminoamide 40

[0052] Cardanol modified phenalkamine 40

[0053] Toluene 20

[0054] Total 100

[0055] The preparation method of the high-performance epoxy anticorrosive coating is:

[0056] It is characterized by first mixing low molecular weight bisphenol A epoxy resin NPEL-128, Desmocap 11, dibutyl phthalate, toluene, isopropanol, ANTI-TERRA-U, BYK-051, BYK-430 and high speed Stir evenly, then add plaster of paris powder, zinc oxide, iron oxide mica, aluminum powder slurry, sericite powder, and disperse at high speed for 0.5-1 hours, then grind until the fineness meets the requirements, then adjust the product viscosity, and package after qualified; The curing agent is formulated separately. When in use, the ratio of the main paint to the curing agent is configured according to the weight ratio of 8:1, and it is us...

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PUM

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Abstract

The invention provides a novel epoxy coating and a preparation method thereof. The coating not only has excellent corrosion resistance, but also has excellent compatibility with a base material or a lower coating film, particularly an epoxy coating, a polyurethane coating, a fluorocarbon coating or an alkyd resin coating. The epoxy coating comprises a main paint and a curing agent, wherein the main paint contains bisphenol A epoxy resin and modifying resin for modifying the bisphenol A epoxy resin; and the curing agent contains polyamino amide and cardanol modified phenolic amine.

Description

Technical field [0001] The invention relates to coating technology, in particular to an epoxy coating with excellent adhesion and / or anti-corrosion performance, and a preparation method and application thereof. Background technique [0002] At present, the anti-corrosion coating of many steel substrates requires more than 10 years of anti-corrosion life. The surface treatment of steel before coating largely determines the protection life of the anti-corrosion coating. Most anti-corrosion coatings require steel surface treatment. Sand blasting or shot blasting is required, and the rust removal level must reach Sa2.5 or above, so the surface treatment cost is very high, and some occasions are limited by the conditions and can hardly meet the design requirements; while the high-pressure water or wet sand blasting process is used. Flash rust will appear on the surface of steel; most of the anti-corrosion coatings of steel structures before the 1990s have entered the maintenance perio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D167/00C09D157/02C09D193/04C09D133/00C09D175/04C09D5/08C09D7/12
Inventor 郭祥恩李运德王克正董祥云
Owner 北京红狮科技发展有限公司
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