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Coating for erosion resistance and cavitation suppression

A corrosion-resistant and cavitation-resistant technology, used in anti-corrosion coatings, anti-fouling/underwater coatings, polyurea/polyurethane coatings, etc. Mechanical properties, reduction of erosion phenomenon, effect of low surface energy of coating film

Inactive Publication Date: 2018-12-14
上海沐皿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Erosion occurs with the occurrence and elimination of cavitation, impacting the surface with enormous pressure in a very short time, and this phenomenon is difficult to predict accurately
With the development of ultra-large industrial equipment such as container ships and liquefied natural gas carriers, cavitation on propellers and appendages (rudders and frames) is becoming more and more frequent, causing materials to fail to reach the expected service life and seriously threatening to the safe operation of the equipment

Method used

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  • Coating for erosion resistance and cavitation suppression

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The coating for corrosion resistance and cavitation suppression includes an ultrafast curing agent solution and a modified silicon nanopowder solution, and the ultrafast curing agent solution and the modified silicon nanopowder solution are mixed at a volume ratio of 1:1;

[0022] Wherein, the ultra-fast curing agent solution is polyisocyanate with an NCO% content of 12%; the modified silicon nanopowder solution includes the following components in weight percent: polyoxypropylene diamine 33%, polyether triamine with a molecular weight of 5000 9%, polyphenylene triamine 12%, modified amino silicone resin 15%, modified fluororesin 5%, adhesion promoter 1%, pigment 2% and nanometer powder 23%.

[0023] Further, the adhesion promoter is β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane.

[0024] Further, the nanopowder is titanium.

Embodiment 2

[0026] The coating for corrosion resistance and cavitation suppression includes an ultrafast curing agent solution and a modified silicon nanopowder solution, and the ultrafast curing agent solution and the modified silicon nanopowder solution are mixed at a volume ratio of 1:1;

[0027] Wherein, the ultra-fast curing agent solution is polyisocyanate with an NCO% content of 15%; the modified silicon nanopowder solution includes the following components in weight percent: polyoxypropylene diamine 33%, polyether triamine with a molecular weight of 5000 9%, polyphenylene triamine 12%, modified amino silicone resin 15%, modified fluororesin 5%, adhesion promoter 1%, pigment 2% and nanometer powder 23%.

[0028] Further, the adhesion promoter is β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane.

[0029] Further, the nanopowder is titanium.

Embodiment 3

[0031] The coating for corrosion resistance and cavitation suppression includes an ultrafast curing agent solution and a modified silicon nanopowder solution, and the ultrafast curing agent solution and the modified silicon nanopowder solution are mixed at a volume ratio of 1:1;

[0032] Wherein, the ultra-fast curing agent solution is a polyisocyanate with an NCO% content of 13.5%; the modified silicon nanopowder solution includes the following components in weight percent: 30% polyoxypropylene diamine, polyether triamine with a molecular weight of 5000 8%, polyphenylene triamine 10%, modified amino silicone resin 9%, modified fluororesin 3%, adhesion promoter 1%, pigment 2% and nano powder 35%.

[0033] Further, the adhesion promoter is β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane.

[0034] Further, the nanopowder is titanium.

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Abstract

The invention discloses a coating for erosion resistance and cavitation suppression. The coating comprises an ultra-fast curing agent solution and a modified silicon nanopowder solution, wherein the ultra-fast curing agent solution and the modified silicon nanopowder solution are mixed according to a volume ratio of 1:(1-2); the ultra-fast curing agent solution is polyisocyanate; the modified silicon nanopowder solution comprises the following components in percentage by weight: 30-33% of polyoxypropylene diamine, 8-10% of polyether triamine with the molecular weight of 5000, 10-15% of polybenzenetriamine, 8-17% of modified amino silicone resin, 2-11% of modified fluorocarbon resins, 1-2% of an adhesion promoter, 1-2% of pigments and 10-35% of nanopowder. The coating disclosed by the invention has excellent machine physical property, wear resistance, impact resistance, scratch resistance and pollution resistance and is capable of inhibiting cavitation to alleviate erosion, so that theservice life of the erosion damage part is prolonged.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a coating for corrosion resistance and cavitation suppression. Background technique [0002] Through the liquid flow in the hydraulic mechanical flow channel, if the flow velocity in a certain place increases, the local pressure here will inevitably drop. When the pressure drops to the critical pressure of the liquid flow at that time, the liquid flow in this low-pressure area will begin to vaporize—— Air bubbles, this phenomenon is called cavitation. The cavitation moves to a higher pressure area with the liquid flow. Due to the increase in pressure, the steam in the bubble recondenses into water, and the bubble collapses. When the bubble collapse process occurs on the surface of the solid wall, the material is destroyed, that is, the material erosion caused by cavitation. Erosion occurs with the onset and elimination of cavitation, which impacts the surface with enormous pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C09D5/16C09D7/61C09D7/63C09D5/10
CPCC08K2003/0881C08K2201/011C09D5/10C09D5/1662C09D5/1687C09D175/02C08K3/08C08K5/5435
Inventor 丁贤雄
Owner 上海沐皿新材料科技有限公司
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