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A magnetically responsive dynamic self-secretion coating and its preparation method and application method

A self-secretion and magnetic response technology, applied in coatings, polyether coatings, anti-corrosion coatings, etc., can solve problems such as loss of protective functions, achieve the effects of improving oil storage rate, increasing porosity, and enhancing coating protection functions

Active Publication Date: 2022-02-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that traditional coatings in the prior art are degraded and degraded due to environmental loads during actual service, resulting in the gradual loss of protective functions, the present invention provides a magnetically responsive dynamic self-secreting coating and its preparation method and application method According to the actual service needs, when the lubricating oil on the coating surface is lost or the protective performance is not good, a magnetic field can be applied in time to form a dynamic physical response and a lubricating oil film. The double protection realizes long-term, controllable and intelligent enhanced surface

Method used

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  • A magnetically responsive dynamic self-secretion coating and its preparation method and application method
  • A magnetically responsive dynamic self-secretion coating and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1) Primer preparation process:

[0044] Take 100g of powdered filler aluminum tripolyphosphate with particle size of 1000 mesh, 30g of zinc chrome yellow, 35g of flake zinc powder, and 12g of polyaniline, and mix them evenly to prepare composite antirust filler. Take 1000g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 15000cp, and 120g of dimethyl silicone oil with a viscosity of 100cp, put them into a vacuum kneader, and mix them with the prepared anti-rust filler evenly. Under the condition of 90° C., after vacuum stirring for 2 hours, transfer to a grinder and grind for 0.5 hour. After the coarse material is crushed, transfer it to a high-speed mixer, add 35g of dimethyl silicone oil, 22g of methyloxime silane, 20g of chain extender ethyl orthosilicate, 12g of aminopropyltriethoxysilane, methyltrimethoxy 10g of silane; 2g of organotin catalyst, stirred at 600r / min for 1h under vacuum condition, vacuum packaged after delivery to obtain the finished ...

Embodiment 2

[0055] 1) Preparation of primer:

[0056] Take 100 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 10000, and 10 parts of dimethyl silicone oil with a viscosity of 100cp, and mix them to obtain a resin base material; take 5 parts of aluminum tripolyphosphate with a particle size of 800 mesh, 2 parts of zinc chrome yellow, 5 parts of flaky zinc powder and 1 part of polyaniline were used to prepare the composite anti-rust filler; the resin base material and the composite anti-rust filler were added to the vacuum kneader, stirred at 80°C for 3 hours, then transferred to the grinder to grind for 0.5 Hours; after the grinding material is cooled, turn the vacuum high-speed mixer, take 3 parts of dimethyl silicone oil with a viscosity of 100cp, 2 parts of methyloxime silane, 1 part of chain extender tetraethyl orthosilicate, aminopropyltriethoxy 1 part of silane, 1 part of methyltrimethoxysilane, 0.1 part of organotin catalyst, mixed and stirred for 1 hour under...

Embodiment 3

[0064] 1) Preparation of primer:

[0065] Take 120 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 20000, 20 parts of dimethyl silicone oil with a viscosity of 500cp, and mix them to obtain a resin base material; take 10 parts of aluminum tripolyphosphate with a particle size of 1000 mesh, 5 parts of zinc chrome yellow, 20 parts of flaky zinc powder and 2 parts of polyaniline were used to prepare composite anti-rust fillers; the resin base material and composite anti-rust fillers were added to a vacuum kneader, stirred for 4 hours under vacuum at 100°C, and then transferred to a grinder for grinding for 1 Hours; after the grinding material is cooled, turn the vacuum high-speed mixer, take 5 parts of dimethyl silicone oil with a viscosity of 500cp, 5 parts of methyloxime silane, 2 parts of chain extender ethyl orthosilicate, aminopropyl triethoxy 5 parts of silane, 3 parts of methyltrimethoxysilane, 0.3 parts of organotin catalyst, mixed and stirred for 2 ...

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Abstract

The invention discloses a magnetic response dynamic self-secretion coating, a preparation method and an application method thereof, and belongs to the field of surface protection. The coating includes three layers of primer, intermediate paint and topcoat. The primer is used to enhance the adhesion between the coating and the substrate. The intermediate paint is doped with magnetic fillers and contains lubricating oil, which can be deformed under the condition of an alternating magnetic field. Vibration; a pore-forming agent is added to the middle paint film layer, the bottom micropore size is larger and the upper micropore size is smaller, so that the lubricating oil can be stored in a large amount in the micropores and facilitates the diffusion toward the surface; the exterior of the topcoat is micro-nano Rough texture that creates an ultra-slippery surface when lubricating oil penetrates the surface. The coating can quickly respond to the magnetic field to form a micro-vibration surface that squeezes the internal oil pockets to deform and secrete lubricating oil. The synergistic effect of the super-slip surface and the dynamic surface greatly enhances the anti-corrosion and anti-fouling protection functions, and greatly prolongs the service life of the super-smooth surface. The invention has great enlightenment significance for the development of antifouling technology.

Description

technical field [0001] The invention relates to a magnetic response dynamic self-secretion coating, a preparation method and an application method thereof, and belongs to the field of surface protection. Background technique [0002] Marine engineering or marine equipment, such as offshore drilling platforms, docks, ships, submarines, etc., are often damaged by fouling by phytoplankton, animals and microorganisms in the ocean. For example, the propeller of a ship is entangled by barnacles, the growth of shellfish on the surface of a submarine affects its stealth, the steel structure of an offshore platform breaks, and the coating of a bridge pier falls off, etc. The cause of microbial fouling is that fungi, spores, algae in seawater, until the attachment of large animals and plants such as mosses and mussels, the accumulated microorganisms metabolize for a long time, and the extracellular substances formed or the carbon and nitrogen sources phagocytized gradually destroy the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D171/00C09D5/10C09D7/61C09D7/63C09D7/65B05D5/00B05D7/24
CPCC09D183/04C09D5/106C09D7/61C09D7/63C09D7/65C09D7/70B05D5/00B05D7/24B05D7/584C08L2205/025C08L2205/035C08K2003/0893C08K2201/011C08K2003/265C08K2003/327C08L83/04C08L79/02C08K13/04C08K7/00C08K3/32C08K5/544C08K5/5465C08L71/00C08K13/02C08K3/08C08K7/26C08K3/26
Inventor 张达威吴德权常卫卫余向阳刘贝李晓刚
Owner UNIV OF SCI & TECH BEIJING
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